Merge branch 'maint'
[gitweb.git] / git-gui.sh
index 6dcd64478eb93bda658167f5946c549ce6a75999..8ee680221d9ab7602a6ea9c87d84ab38a3f1e987 100755 (executable)
@@ -1,10 +1,16 @@
 #!/bin/sh
 # Tcl ignores the next line -*- tcl -*- \
-exec wish "$0" -- "$@"
-
-set appvers {@@GIT_VERSION@@}
+ if test "z$*" = zversion \
+ || test "z$*" = z--version; \
+ then \
+       echo 'git-gui version @@GITGUI_VERSION@@'; \
+       exit; \
+ fi; \
+ exec wish "$0" -- "$@"
+
+set appvers {@@GITGUI_VERSION@@}
 set copyright {
-Copyright © 2006, 2007 Shawn Pearce, Paul Mackerras.
+Copyright © 2006, 2007 Shawn Pearce, et. al.
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -20,6 +26,88 @@ You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA}
 
+######################################################################
+##
+## Tcl/Tk sanity check
+
+if {[catch {package require Tcl 8.4} err]
+ || [catch {package require Tk  8.4} err]
+} {
+       catch {wm withdraw .}
+       tk_messageBox \
+               -icon error \
+               -type ok \
+               -title "git-gui: fatal error" \
+               -message $err
+       exit 1
+}
+
+######################################################################
+##
+## enable verbose loading?
+
+if {![catch {set _verbose $env(GITGUI_VERBOSE)}]} {
+       unset _verbose
+       rename auto_load real__auto_load
+       proc auto_load {name args} {
+               puts stderr "auto_load $name"
+               return [uplevel 1 real__auto_load $name $args]
+       }
+       rename source real__source
+       proc source {name} {
+               puts stderr "source    $name"
+               uplevel 1 real__source $name
+       }
+}
+
+######################################################################
+##
+## configure our library
+
+set oguilib {@@GITGUI_LIBDIR@@}
+set oguirel {@@GITGUI_RELATIVE@@}
+if {$oguirel eq {1}} {
+       set oguilib [file dirname [file dirname [file normalize $argv0]]]
+       set oguilib [file join $oguilib share git-gui lib]
+} elseif {[string match @@* $oguirel]} {
+       set oguilib [file join [file dirname [file normalize $argv0]] lib]
+}
+
+set idx [file join $oguilib tclIndex]
+if {[catch {set fd [open $idx r]} err]} {
+       catch {wm withdraw .}
+       tk_messageBox \
+               -icon error \
+               -type ok \
+               -title "git-gui: fatal error" \
+               -message $err
+       exit 1
+}
+if {[gets $fd] eq {# Autogenerated by git-gui Makefile}} {
+       set idx [list]
+       while {[gets $fd n] >= 0} {
+               if {$n ne {} && ![string match #* $n]} {
+                       lappend idx $n
+               }
+       }
+} else {
+       set idx {}
+}
+close $fd
+
+if {$idx ne {}} {
+       set loaded [list]
+       foreach p $idx {
+               if {[lsearch -exact $loaded $p] >= 0} continue
+               source [file join $oguilib $p]
+               lappend loaded $p
+       }
+       unset loaded p
+} else {
+       set auto_path [concat [list $oguilib] $auto_path]
+}
+unset -nocomplain oguirel idx fd
+
 ######################################################################
 ##
 ## read only globals
@@ -46,7 +134,7 @@ proc gitdir {args} {
 proc gitexec {args} {
        global _gitexec
        if {$_gitexec eq {}} {
-               if {[catch {set _gitexec [exec git --exec-path]} err]} {
+               if {[catch {set _gitexec [git --exec-path]} err]} {
                        error "Git not installed?\n\n$err"
                }
        }
@@ -134,13 +222,22 @@ proc is_config_true {name} {
        }
 }
 
+proc get_config {name} {
+       global repo_config
+       if {[catch {set v $repo_config($name)}]} {
+               return {}
+       } else {
+               return $v
+       }
+}
+
 proc load_config {include_global} {
        global repo_config global_config default_config
 
        array unset global_config
        if {$include_global} {
                catch {
-                       set fd_rc [open "| git repo-config --global --list" r]
+                       set fd_rc [open "| git config --global --list" r]
                        while {[gets $fd_rc line] >= 0} {
                                if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
                                        if {[is_many_config $name]} {
@@ -156,7 +253,7 @@ proc load_config {include_global} {
 
        array unset repo_config
        catch {
-               set fd_rc [open "| git repo-config --list" r]
+               set fd_rc [open "| git config --list" r]
                while {[gets $fd_rc line] >= 0} {
                        if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
                                if {[is_many_config $name]} {
@@ -179,120 +276,78 @@ proc load_config {include_global} {
        }
 }
 
-proc save_config {} {
-       global default_config font_descs
-       global repo_config global_config
-       global repo_config_new global_config_new
-
-       foreach option $font_descs {
-               set name [lindex $option 0]
-               set font [lindex $option 1]
-               font configure $font \
-                       -family $global_config_new(gui.$font^^family) \
-                       -size $global_config_new(gui.$font^^size)
-               font configure ${font}bold \
-                       -family $global_config_new(gui.$font^^family) \
-                       -size $global_config_new(gui.$font^^size)
-               set global_config_new(gui.$name) [font configure $font]
-               unset global_config_new(gui.$font^^family)
-               unset global_config_new(gui.$font^^size)
-       }
-
-       foreach name [array names default_config] {
-               set value $global_config_new($name)
-               if {$value ne $global_config($name)} {
-                       if {$value eq $default_config($name)} {
-                               catch {exec git repo-config --global --unset $name}
-                       } else {
-                               regsub -all "\[{}\]" $value {"} value
-                               exec git repo-config --global $name $value
-                       }
-                       set global_config($name) $value
-                       if {$value eq $repo_config($name)} {
-                               catch {exec git repo-config --unset $name}
-                               set repo_config($name) $value
-                       }
-               }
-       }
+######################################################################
+##
+## handy utils
 
-       foreach name [array names default_config] {
-               set value $repo_config_new($name)
-               if {$value ne $repo_config($name)} {
-                       if {$value eq $global_config($name)} {
-                               catch {exec git repo-config --unset $name}
-                       } else {
-                               regsub -all "\[{}\]" $value {"} value
-                               exec git repo-config $name $value
-                       }
-                       set repo_config($name) $value
-               }
-       }
+proc git {args} {
+       return [eval exec git $args]
 }
 
-proc error_popup {msg} {
-       set title [appname]
-       if {[reponame] ne {}} {
-               append title " ([reponame])"
-       }
-       set cmd [list tk_messageBox \
-               -icon error \
-               -type ok \
-               -title "$title: error" \
-               -message $msg]
-       if {[winfo ismapped .]} {
-               lappend cmd -parent .
+proc current-branch {} {
+       set ref {}
+       set fd [open [gitdir HEAD] r]
+       if {[gets $fd ref] <16
+        || ![regsub {^ref: refs/heads/} $ref {} ref]} {
+               set ref {}
        }
-       eval $cmd
+       close $fd
+       return $ref
 }
 
-proc warn_popup {msg} {
-       set title [appname]
-       if {[reponame] ne {}} {
-               append title " ([reponame])"
-       }
-       set cmd [list tk_messageBox \
-               -icon warning \
-               -type ok \
-               -title "$title: warning" \
-               -message $msg]
-       if {[winfo ismapped .]} {
-               lappend cmd -parent .
-       }
-       eval $cmd
+auto_load tk_optionMenu
+rename tk_optionMenu real__tkOptionMenu
+proc tk_optionMenu {w varName args} {
+       set m [eval real__tkOptionMenu $w $varName $args]
+       $m configure -font font_ui
+       $w configure -font font_ui
+       return $m
 }
 
-proc info_popup {msg {parent .}} {
-       set title [appname]
-       if {[reponame] ne {}} {
-               append title " ([reponame])"
-       }
-       tk_messageBox \
-               -parent $parent \
-               -icon info \
-               -type ok \
-               -title $title \
-               -message $msg
+######################################################################
+##
+## version check
+
+set req_maj 1
+set req_min 5
+
+if {[catch {set v [git --version]} err]} {
+       catch {wm withdraw .}
+       error_popup "Cannot determine Git version:
+
+$err
+
+[appname] requires Git $req_maj.$req_min or later."
+       exit 1
 }
+if {[regexp {^git version (\d+)\.(\d+)} $v _junk act_maj act_min]} {
+       if {$act_maj < $req_maj
+               || ($act_maj == $req_maj && $act_min < $req_min)} {
+               catch {wm withdraw .}
+               error_popup "[appname] requires Git $req_maj.$req_min or later.
 
-proc ask_popup {msg} {
-       set title [appname]
-       if {[reponame] ne {}} {
-               append title " ([reponame])"
+You are using $v."
+               exit 1
        }
-       return [tk_messageBox \
-               -parent . \
-               -icon question \
-               -type yesno \
-               -title $title \
-               -message $msg]
+} else {
+       catch {wm withdraw .}
+       error_popup "Cannot parse Git version string:\n\n$v"
+       exit 1
 }
+unset -nocomplain v _junk act_maj act_min req_maj req_min
 
 ######################################################################
 ##
 ## repository setup
 
-if {   [catch {set _gitdir $env(GIT_DIR)}]
-       && [catch {set _gitdir [exec git rev-parse --git-dir]} err]} {
+if {[catch {
+               set _gitdir $env(GIT_DIR)
+               set _prefix {}
+               }]
+       && [catch {
+               set _gitdir [git rev-parse --git-dir]
+               set _prefix [git rev-parse --show-prefix]
+       } err]} {
        catch {wm withdraw .}
        error_popup "Cannot find the git directory:\n\n$err"
        exit 1
@@ -319,6 +374,24 @@ set _reponame [lindex [file split \
        [file normalize [file dirname $_gitdir]]] \
        end]
 
+######################################################################
+##
+## global init
+
+set current_diff_path {}
+set current_diff_side {}
+set diff_actions [list]
+set ui_status_value {Initializing...}
+
+set HEAD {}
+set PARENT {}
+set MERGE_HEAD [list]
+set commit_type {}
+set empty_tree {}
+set current_branch {}
+set current_diff_path {}
+set selected_commit_type new
+
 ######################################################################
 ##
 ## task management
@@ -365,16 +438,8 @@ proc repository_state {ctvar hdvar mhvar} {
 
        set mh [list]
 
-       if {[catch {set current_branch [exec git symbolic-ref HEAD]}]} {
-               set current_branch {}
-       } else {
-               regsub ^refs/((heads|tags|remotes)/)? \
-                       $current_branch \
-                       {} \
-                       current_branch
-       }
-
-       if {[catch {set hd [exec git rev-parse --verify HEAD]}]} {
+       set current_branch [current-branch]
+       if {[catch {set hd [git rev-parse --verify HEAD]}]} {
                set hd {}
                set ct initial
                return
@@ -402,7 +467,7 @@ proc PARENT {} {
                return $p
        }
        if {$empty_tree eq {}} {
-               set empty_tree [exec git mktree << {}]
+               set empty_tree [git mktree << {}]
        }
        return $empty_tree
 }
@@ -430,7 +495,8 @@ proc rescan {after {honor_trustmtime 1}} {
 
        if {![$ui_comm edit modified]
                || [string trim [$ui_comm get 0.0 end]] eq {}} {
-               if {[load_message GITGUI_MSG]} {
+               if {[string match amend* $commit_type]} {
+               } elseif {[load_message GITGUI_MSG]} {
                } elseif {[load_message MERGE_MSG]} {
                } elseif {[load_message SQUASH_MSG]} {
                }
@@ -592,7 +658,7 @@ proc read_ls_others {fd after} {
 }
 
 proc rescan_done {fd buf after} {
-       global rescan_active
+       global rescan_active current_diff_path
        global file_states repo_config
        upvar $buf to_clear
 
@@ -604,7 +670,7 @@ proc rescan_done {fd buf after} {
        prune_selection
        unlock_index
        display_all_files
-       reshow_diff
+       if {$current_diff_path ne {}} reshow_diff
        uplevel #0 $after
 }
 
@@ -620,2971 +686,195 @@ proc prune_selection {} {
 
 ######################################################################
 ##
-## diff
+## ui helpers
 
-proc clear_diff {} {
-       global ui_diff current_diff_path current_diff_header
-       global ui_index ui_workdir
+proc mapicon {w state path} {
+       global all_icons
 
-       $ui_diff conf -state normal
-       $ui_diff delete 0.0 end
-       $ui_diff conf -state disabled
+       if {[catch {set r $all_icons($state$w)}]} {
+               puts "error: no icon for $w state={$state} $path"
+               return file_plain
+       }
+       return $r
+}
 
-       set current_diff_path {}
-       set current_diff_header {}
+proc mapdesc {state path} {
+       global all_descs
 
-       $ui_index tag remove in_diff 0.0 end
-       $ui_workdir tag remove in_diff 0.0 end
+       if {[catch {set r $all_descs($state)}]} {
+               puts "error: no desc for state={$state} $path"
+               return $state
+       }
+       return $r
 }
 
-proc reshow_diff {} {
-       global ui_status_value file_states file_lists
-       global current_diff_path current_diff_side
+proc escape_path {path} {
+       regsub -all {\\} $path "\\\\" path
+       regsub -all "\n" $path "\\n" path
+       return $path
+}
 
-       set p $current_diff_path
-       if {$p eq {}
-               || $current_diff_side eq {}
-               || [catch {set s $file_states($p)}]
-               || [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} {
-               clear_diff
-       } else {
-               show_diff $p $current_diff_side
-       }
+proc short_path {path} {
+       return [escape_path [lindex [file split $path] end]]
 }
 
-proc handle_empty_diff {} {
-       global current_diff_path file_states file_lists
+set next_icon_id 0
+set null_sha1 [string repeat 0 40]
 
-       set path $current_diff_path
-       set s $file_states($path)
-       if {[lindex $s 0] ne {_M}} return
+proc merge_state {path new_state {head_info {}} {index_info {}}} {
+       global file_states next_icon_id null_sha1
 
-       info_popup "No differences detected.
+       set s0 [string index $new_state 0]
+       set s1 [string index $new_state 1]
 
-[short_path $path] has no changes.
+       if {[catch {set info $file_states($path)}]} {
+               set state __
+               set icon n[incr next_icon_id]
+       } else {
+               set state [lindex $info 0]
+               set icon [lindex $info 1]
+               if {$head_info eq {}}  {set head_info  [lindex $info 2]}
+               if {$index_info eq {}} {set index_info [lindex $info 3]}
+       }
 
-The modification date of this file was updated
-by another application, but the content within
-the file was not changed.
+       if     {$s0 eq {?}} {set s0 [string index $state 0]} \
+       elseif {$s0 eq {_}} {set s0 _}
 
-A rescan will be automatically started to find
-other files which may have the same state."
+       if     {$s1 eq {?}} {set s1 [string index $state 1]} \
+       elseif {$s1 eq {_}} {set s1 _}
 
-       clear_diff
-       display_file $path __
-       rescan {set ui_status_value {Ready.}} 0
-}
+       if {$s0 eq {A} && $s1 eq {_} && $head_info eq {}} {
+               set head_info [list 0 $null_sha1]
+       } elseif {$s0 ne {_} && [string index $state 0] eq {_}
+               && $head_info eq {}} {
+               set head_info $index_info
+       }
 
-proc show_diff {path w {lno {}}} {
-       global file_states file_lists
-       global is_3way_diff diff_active repo_config
-       global ui_diff ui_status_value ui_index ui_workdir
-       global current_diff_path current_diff_side current_diff_header
+       set file_states($path) [list $s0$s1 $icon \
+               $head_info $index_info \
+               ]
+       return $state
+}
 
-       if {$diff_active || ![lock_index read]} return
+proc display_file_helper {w path icon_name old_m new_m} {
+       global file_lists
 
-       clear_diff
-       if {$lno == {}} {
+       if {$new_m eq {_}} {
                set lno [lsearch -sorted -exact $file_lists($w) $path]
                if {$lno >= 0} {
+                       set file_lists($w) [lreplace $file_lists($w) $lno $lno]
                        incr lno
+                       $w conf -state normal
+                       $w delete $lno.0 [expr {$lno + 1}].0
+                       $w conf -state disabled
                }
+       } elseif {$old_m eq {_} && $new_m ne {_}} {
+               lappend file_lists($w) $path
+               set file_lists($w) [lsort -unique $file_lists($w)]
+               set lno [lsearch -sorted -exact $file_lists($w) $path]
+               incr lno
+               $w conf -state normal
+               $w image create $lno.0 \
+                       -align center -padx 5 -pady 1 \
+                       -name $icon_name \
+                       -image [mapicon $w $new_m $path]
+               $w insert $lno.1 "[escape_path $path]\n"
+               $w conf -state disabled
+       } elseif {$old_m ne $new_m} {
+               $w conf -state normal
+               $w image conf $icon_name -image [mapicon $w $new_m $path]
+               $w conf -state disabled
        }
-       if {$lno >= 1} {
-               $w tag add in_diff $lno.0 [expr {$lno + 1}].0
-       }
+}
+
+proc display_file {path state} {
+       global file_states selected_paths
+       global ui_index ui_workdir
 
+       set old_m [merge_state $path $state]
        set s $file_states($path)
-       set m [lindex $s 0]
-       set is_3way_diff 0
-       set diff_active 1
-       set current_diff_path $path
-       set current_diff_side $w
-       set current_diff_header {}
-       set ui_status_value "Loading diff of [escape_path $path]..."
-
-       # - Git won't give us the diff, there's nothing to compare to!
-       #
-       if {$m eq {_O}} {
-               set max_sz [expr {128 * 1024}]
-               if {[catch {
-                               set fd [open $path r]
-                               set content [read $fd $max_sz]
-                               close $fd
-                               set sz [file size $path]
-                       } err ]} {
-                       set diff_active 0
-                       unlock_index
-                       set ui_status_value "Unable to display [escape_path $path]"
-                       error_popup "Error loading file:\n\n$err"
-                       return
-               }
-               $ui_diff conf -state normal
-               if {![catch {set type [exec file $path]}]} {
-                       set n [string length $path]
-                       if {[string equal -length $n $path $type]} {
-                               set type [string range $type $n end]
-                               regsub {^:?\s*} $type {} type
-                       }
-                       $ui_diff insert end "* $type\n" d_@
-               }
-               if {[string first "\0" $content] != -1} {
-                       $ui_diff insert end \
-                               "* Binary file (not showing content)." \
-                               d_@
-               } else {
-                       if {$sz > $max_sz} {
-                               $ui_diff insert end \
-"* Untracked file is $sz bytes.
-* Showing only first $max_sz bytes.
-" d_@
-                       }
-                       $ui_diff insert end $content
-                       if {$sz > $max_sz} {
-                               $ui_diff insert end "
-* Untracked file clipped here by [appname].
-* To see the entire file, use an external editor.
-" d_@
-                       }
-               }
-               $ui_diff conf -state disabled
-               set diff_active 0
-               unlock_index
-               set ui_status_value {Ready.}
-               return
-       }
+       set new_m [lindex $s 0]
+       set icon_name [lindex $s 1]
 
-       set cmd [list | git]
-       if {$w eq $ui_index} {
-               lappend cmd diff-index
-               lappend cmd --cached
-       } elseif {$w eq $ui_workdir} {
-               if {[string index $m 0] eq {U}} {
-                       lappend cmd diff
-               } else {
-                       lappend cmd diff-files
-               }
+       set o [string index $old_m 0]
+       set n [string index $new_m 0]
+       if {$o eq {U}} {
+               set o _
+       }
+       if {$n eq {U}} {
+               set n _
        }
+       display_file_helper     $ui_index $path $icon_name $o $n
 
-       lappend cmd -p
-       lappend cmd --no-color
-       if {$repo_config(gui.diffcontext) > 0} {
-               lappend cmd "-U$repo_config(gui.diffcontext)"
+       if {[string index $old_m 0] eq {U}} {
+               set o U
+       } else {
+               set o [string index $old_m 1]
        }
-       if {$w eq $ui_index} {
-               lappend cmd [PARENT]
+       if {[string index $new_m 0] eq {U}} {
+               set n U
+       } else {
+               set n [string index $new_m 1]
        }
-       lappend cmd --
-       lappend cmd $path
-
-       if {[catch {set fd [open $cmd r]} err]} {
-               set diff_active 0
-               unlock_index
-               set ui_status_value "Unable to display [escape_path $path]"
-               error_popup "Error loading diff:\n\n$err"
-               return
+       display_file_helper     $ui_workdir $path $icon_name $o $n
+
+       if {$new_m eq {__}} {
+               unset file_states($path)
+               catch {unset selected_paths($path)}
        }
+}
 
-       fconfigure $fd \
-               -blocking 0 \
-               -encoding binary \
-               -translation binary
-       fileevent $fd readable [list read_diff $fd]
+proc display_all_files_helper {w path icon_name m} {
+       global file_lists
+
+       lappend file_lists($w) $path
+       set lno [expr {[lindex [split [$w index end] .] 0] - 1}]
+       $w image create end \
+               -align center -padx 5 -pady 1 \
+               -name $icon_name \
+               -image [mapicon $w $m $path]
+       $w insert end "[escape_path $path]\n"
 }
 
-proc read_diff {fd} {
-       global ui_diff ui_status_value diff_active
-       global is_3way_diff current_diff_header
+proc display_all_files {} {
+       global ui_index ui_workdir
+       global file_states file_lists
+       global last_clicked
 
-       $ui_diff conf -state normal
-       while {[gets $fd line] >= 0} {
-               # -- Cleanup uninteresting diff header lines.
-               #
-               if {   [string match {diff --git *}      $line]
-                       || [string match {diff --cc *}       $line]
-                       || [string match {diff --combined *} $line]
-                       || [string match {--- *}             $line]
-                       || [string match {+++ *}             $line]} {
-                       append current_diff_header $line "\n"
-                       continue
-               }
-               if {[string match {index *} $line]} continue
-               if {$line eq {deleted file mode 120000}} {
-                       set line "deleted symlink"
-               }
+       $ui_index conf -state normal
+       $ui_workdir conf -state normal
 
-               # -- Automatically detect if this is a 3 way diff.
-               #
-               if {[string match {@@@ *} $line]} {set is_3way_diff 1}
-
-               if {[string match {mode *} $line]
-                       || [string match {new file *} $line]
-                       || [string match {deleted file *} $line]
-                       || [string match {Binary files * and * differ} $line]
-                       || $line eq {\ No newline at end of file}
-                       || [regexp {^\* Unmerged path } $line]} {
-                       set tags {}
-               } elseif {$is_3way_diff} {
-                       set op [string range $line 0 1]
-                       switch -- $op {
-                       {  } {set tags {}}
-                       {@@} {set tags d_@}
-                       { +} {set tags d_s+}
-                       { -} {set tags d_s-}
-                       {+ } {set tags d_+s}
-                       {- } {set tags d_-s}
-                       {--} {set tags d_--}
-                       {++} {
-                               if {[regexp {^\+\+([<>]{7} |={7})} $line _g op]} {
-                                       set line [string replace $line 0 1 {  }]
-                                       set tags d$op
-                               } else {
-                                       set tags d_++
-                               }
-                       }
-                       default {
-                               puts "error: Unhandled 3 way diff marker: {$op}"
-                               set tags {}
-                       }
-                       }
-               } else {
-                       set op [string index $line 0]
-                       switch -- $op {
-                       { } {set tags {}}
-                       {@} {set tags d_@}
-                       {-} {set tags d_-}
-                       {+} {
-                               if {[regexp {^\+([<>]{7} |={7})} $line _g op]} {
-                                       set line [string replace $line 0 0 { }]
-                                       set tags d$op
-                               } else {
-                                       set tags d_+
-                               }
-                       }
-                       default {
-                               puts "error: Unhandled 2 way diff marker: {$op}"
-                               set tags {}
-                       }
-                       }
-               }
-               $ui_diff insert end $line $tags
-               if {[string index $line end] eq "\r"} {
-                       $ui_diff tag add d_cr {end - 2c}
-               }
-               $ui_diff insert end "\n" $tags
-       }
-       $ui_diff conf -state disabled
-
-       if {[eof $fd]} {
-               close $fd
-               set diff_active 0
-               unlock_index
-               set ui_status_value {Ready.}
-
-               if {[$ui_diff index end] eq {2.0}} {
-                       handle_empty_diff
-               }
-       }
-}
-
-proc apply_hunk {x y} {
-       global current_diff_path current_diff_header current_diff_side
-       global ui_diff ui_index file_states
-
-       if {$current_diff_path eq {} || $current_diff_header eq {}} return
-       if {![lock_index apply_hunk]} return
-
-       set apply_cmd {git apply --cached --whitespace=nowarn}
-       set mi [lindex $file_states($current_diff_path) 0]
-       if {$current_diff_side eq $ui_index} {
-               set mode unstage
-               lappend apply_cmd --reverse
-               if {[string index $mi 0] ne {M}} {
-                       unlock_index
-                       return
-               }
-       } else {
-               set mode stage
-               if {[string index $mi 1] ne {M}} {
-                       unlock_index
-                       return
-               }
-       }
-
-       set s_lno [lindex [split [$ui_diff index @$x,$y] .] 0]
-       set s_lno [$ui_diff search -backwards -regexp ^@@ $s_lno.0 0.0]
-       if {$s_lno eq {}} {
-               unlock_index
-               return
-       }
-
-       set e_lno [$ui_diff search -forwards -regexp ^@@ "$s_lno + 1 lines" end]
-       if {$e_lno eq {}} {
-               set e_lno end
-       }
-
-       if {[catch {
-               set p [open "| $apply_cmd" w]
-               fconfigure $p -translation binary -encoding binary
-               puts -nonewline $p $current_diff_header
-               puts -nonewline $p [$ui_diff get $s_lno $e_lno]
-               close $p} err]} {
-               error_popup "Failed to $mode selected hunk.\n\n$err"
-               unlock_index
-               return
-       }
-
-       $ui_diff conf -state normal
-       $ui_diff delete $s_lno $e_lno
-       $ui_diff conf -state disabled
-
-       if {[$ui_diff get 1.0 end] eq "\n"} {
-               set o _
-       } else {
-               set o ?
-       }
-
-       if {$current_diff_side eq $ui_index} {
-               set mi ${o}M
-       } elseif {[string index $mi 0] eq {_}} {
-               set mi M$o
-       } else {
-               set mi ?$o
-       }
-       unlock_index
-       display_file $current_diff_path $mi
-       if {$o eq {_}} {
-               clear_diff
-       }
-}
-
-######################################################################
-##
-## commit
-
-proc load_last_commit {} {
-       global HEAD PARENT MERGE_HEAD commit_type ui_comm
-       global repo_config
-
-       if {[llength $PARENT] == 0} {
-               error_popup {There is nothing to amend.
-
-You are about to create the initial commit.
-There is no commit before this to amend.
-}
-               return
-       }
-
-       repository_state curType curHEAD curMERGE_HEAD
-       if {$curType eq {merge}} {
-               error_popup {Cannot amend while merging.
-
-You are currently in the middle of a merge that
-has not been fully completed.  You cannot amend
-the prior commit unless you first abort the
-current merge activity.
-}
-               return
-       }
-
-       set msg {}
-       set parents [list]
-       if {[catch {
-                       set fd [open "| git cat-file commit $curHEAD" r]
-                       fconfigure $fd -encoding binary -translation lf
-                       if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
-                               set enc utf-8
-                       }
-                       while {[gets $fd line] > 0} {
-                               if {[string match {parent *} $line]} {
-                                       lappend parents [string range $line 7 end]
-                               } elseif {[string match {encoding *} $line]} {
-                                       set enc [string tolower [string range $line 9 end]]
-                               }
-                       }
-                       fconfigure $fd -encoding $enc
-                       set msg [string trim [read $fd]]
-                       close $fd
-               } err]} {
-               error_popup "Error loading commit data for amend:\n\n$err"
-               return
-       }
-
-       set HEAD $curHEAD
-       set PARENT $parents
-       set MERGE_HEAD [list]
-       switch -- [llength $parents] {
-       0       {set commit_type amend-initial}
-       1       {set commit_type amend}
-       default {set commit_type amend-merge}
-       }
-
-       $ui_comm delete 0.0 end
-       $ui_comm insert end $msg
-       $ui_comm edit reset
-       $ui_comm edit modified false
-       rescan {set ui_status_value {Ready.}}
-}
-
-proc create_new_commit {} {
-       global commit_type ui_comm
-
-       set commit_type normal
-       $ui_comm delete 0.0 end
-       $ui_comm edit reset
-       $ui_comm edit modified false
-       rescan {set ui_status_value {Ready.}}
-}
-
-set GIT_COMMITTER_IDENT {}
-
-proc committer_ident {} {
-       global GIT_COMMITTER_IDENT
-
-       if {$GIT_COMMITTER_IDENT eq {}} {
-               if {[catch {set me [exec git var GIT_COMMITTER_IDENT]} err]} {
-                       error_popup "Unable to obtain your identity:\n\n$err"
-                       return {}
-               }
-               if {![regexp {^(.*) [0-9]+ [-+0-9]+$} \
-                       $me me GIT_COMMITTER_IDENT]} {
-                       error_popup "Invalid GIT_COMMITTER_IDENT:\n\n$me"
-                       return {}
-               }
-       }
-
-       return $GIT_COMMITTER_IDENT
-}
-
-proc commit_tree {} {
-       global HEAD commit_type file_states ui_comm repo_config
-       global ui_status_value pch_error
-
-       if {[committer_ident] eq {}} return
-       if {![lock_index update]} return
-
-       # -- Our in memory state should match the repository.
-       #
-       repository_state curType curHEAD curMERGE_HEAD
-       if {[string match amend* $commit_type]
-               && $curType eq {normal}
-               && $curHEAD eq $HEAD} {
-       } elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
-               info_popup {Last scanned state does not match repository state.
-
-Another Git program has modified this repository
-since the last scan.  A rescan must be performed
-before another commit can be created.
-
-The rescan will be automatically started now.
-}
-               unlock_index
-               rescan {set ui_status_value {Ready.}}
-               return
-       }
-
-       # -- At least one file should differ in the index.
-       #
-       set files_ready 0
-       foreach path [array names file_states] {
-               switch -glob -- [lindex $file_states($path) 0] {
-               _? {continue}
-               A? -
-               D? -
-               M? {set files_ready 1}
-               U? {
-                       error_popup "Unmerged files cannot be committed.
-
-File [short_path $path] has merge conflicts.
-You must resolve them and add the file before committing.
-"
-                       unlock_index
-                       return
-               }
-               default {
-                       error_popup "Unknown file state [lindex $s 0] detected.
-
-File [short_path $path] cannot be committed by this program.
-"
-               }
-               }
-       }
-       if {!$files_ready} {
-               info_popup {No changes to commit.
-
-You must add at least 1 file before you can commit.
-}
-               unlock_index
-               return
-       }
-
-       # -- A message is required.
-       #
-       set msg [string trim [$ui_comm get 1.0 end]]
-       regsub -all -line {[ \t\r]+$} $msg {} msg
-       if {$msg eq {}} {
-               error_popup {Please supply a commit message.
-
-A good commit message has the following format:
-
-- First line: Describe in one sentance what you did.
-- Second line: Blank
-- Remaining lines: Describe why this change is good.
-}
-               unlock_index
-               return
-       }
-
-       # -- Run the pre-commit hook.
-       #
-       set pchook [gitdir hooks pre-commit]
-
-       # On Cygwin [file executable] might lie so we need to ask
-       # the shell if the hook is executable.  Yes that's annoying.
-       #
-       if {[is_Cygwin] && [file isfile $pchook]} {
-               set pchook [list sh -c [concat \
-                       "if test -x \"$pchook\";" \
-                       "then exec \"$pchook\" 2>&1;" \
-                       "fi"]]
-       } elseif {[file executable $pchook]} {
-               set pchook [list $pchook |& cat]
-       } else {
-               commit_writetree $curHEAD $msg
-               return
-       }
-
-       set ui_status_value {Calling pre-commit hook...}
-       set pch_error {}
-       set fd_ph [open "| $pchook" r]
-       fconfigure $fd_ph -blocking 0 -translation binary
-       fileevent $fd_ph readable \
-               [list commit_prehook_wait $fd_ph $curHEAD $msg]
-}
-
-proc commit_prehook_wait {fd_ph curHEAD msg} {
-       global pch_error ui_status_value
-
-       append pch_error [read $fd_ph]
-       fconfigure $fd_ph -blocking 1
-       if {[eof $fd_ph]} {
-               if {[catch {close $fd_ph}]} {
-                       set ui_status_value {Commit declined by pre-commit hook.}
-                       hook_failed_popup pre-commit $pch_error
-                       unlock_index
-               } else {
-                       commit_writetree $curHEAD $msg
-               }
-               set pch_error {}
-               return
-       }
-       fconfigure $fd_ph -blocking 0
-}
-
-proc commit_writetree {curHEAD msg} {
-       global ui_status_value
-
-       set ui_status_value {Committing changes...}
-       set fd_wt [open "| git write-tree" r]
-       fileevent $fd_wt readable \
-               [list commit_committree $fd_wt $curHEAD $msg]
-}
-
-proc commit_committree {fd_wt curHEAD msg} {
-       global HEAD PARENT MERGE_HEAD commit_type
-       global all_heads current_branch
-       global ui_status_value ui_comm selected_commit_type
-       global file_states selected_paths rescan_active
-       global repo_config
-
-       gets $fd_wt tree_id
-       if {$tree_id eq {} || [catch {close $fd_wt} err]} {
-               error_popup "write-tree failed:\n\n$err"
-               set ui_status_value {Commit failed.}
-               unlock_index
-               return
-       }
-
-       # -- Build the message.
-       #
-       set msg_p [gitdir COMMIT_EDITMSG]
-       set msg_wt [open $msg_p w]
-       if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
-               set enc utf-8
-       }
-       fconfigure $msg_wt -encoding $enc -translation binary
-       puts -nonewline $msg_wt $msg
-       close $msg_wt
-
-       # -- Create the commit.
-       #
-       set cmd [list git commit-tree $tree_id]
-       set parents [concat $PARENT $MERGE_HEAD]
-       if {[llength $parents] > 0} {
-               foreach p $parents {
-                       lappend cmd -p $p
-               }
-       } else {
-               # git commit-tree writes to stderr during initial commit.
-               lappend cmd 2>/dev/null
-       }
-       lappend cmd <$msg_p
-       if {[catch {set cmt_id [eval exec $cmd]} err]} {
-               error_popup "commit-tree failed:\n\n$err"
-               set ui_status_value {Commit failed.}
-               unlock_index
-               return
-       }
-
-       # -- Update the HEAD ref.
-       #
-       set reflogm commit
-       if {$commit_type ne {normal}} {
-               append reflogm " ($commit_type)"
-       }
-       set i [string first "\n" $msg]
-       if {$i >= 0} {
-               append reflogm {: } [string range $msg 0 [expr {$i - 1}]]
-       } else {
-               append reflogm {: } $msg
-       }
-       set cmd [list git update-ref -m $reflogm HEAD $cmt_id $curHEAD]
-       if {[catch {eval exec $cmd} err]} {
-               error_popup "update-ref failed:\n\n$err"
-               set ui_status_value {Commit failed.}
-               unlock_index
-               return
-       }
-
-       # -- Make sure our current branch exists.
-       #
-       if {$commit_type eq {initial}} {
-               lappend all_heads $current_branch
-               set all_heads [lsort -unique $all_heads]
-               populate_branch_menu
-       }
-
-       # -- Cleanup after ourselves.
-       #
-       catch {file delete $msg_p}
-       catch {file delete [gitdir MERGE_HEAD]}
-       catch {file delete [gitdir MERGE_MSG]}
-       catch {file delete [gitdir SQUASH_MSG]}
-       catch {file delete [gitdir GITGUI_MSG]}
-
-       # -- Let rerere do its thing.
-       #
-       if {[file isdirectory [gitdir rr-cache]]} {
-               catch {exec git rerere}
-       }
-
-       # -- Run the post-commit hook.
-       #
-       set pchook [gitdir hooks post-commit]
-       if {[is_Cygwin] && [file isfile $pchook]} {
-               set pchook [list sh -c [concat \
-                       "if test -x \"$pchook\";" \
-                       "then exec \"$pchook\";" \
-                       "fi"]]
-       } elseif {![file executable $pchook]} {
-               set pchook {}
-       }
-       if {$pchook ne {}} {
-               catch {exec $pchook &}
-       }
-
-       $ui_comm delete 0.0 end
-       $ui_comm edit reset
-       $ui_comm edit modified false
-
-       if {[is_enabled singlecommit]} do_quit
-
-       # -- Update in memory status
-       #
-       set selected_commit_type new
-       set commit_type normal
-       set HEAD $cmt_id
-       set PARENT $cmt_id
-       set MERGE_HEAD [list]
-
-       foreach path [array names file_states] {
-               set s $file_states($path)
-               set m [lindex $s 0]
-               switch -glob -- $m {
-               _O -
-               _M -
-               _D {continue}
-               __ -
-               A_ -
-               M_ -
-               D_ {
-                       unset file_states($path)
-                       catch {unset selected_paths($path)}
-               }
-               DO {
-                       set file_states($path) [list _O [lindex $s 1] {} {}]
-               }
-               AM -
-               AD -
-               MM -
-               MD {
-                       set file_states($path) [list \
-                               _[string index $m 1] \
-                               [lindex $s 1] \
-                               [lindex $s 3] \
-                               {}]
-               }
-               }
-       }
-
-       display_all_files
-       unlock_index
-       reshow_diff
-       set ui_status_value \
-               "Changes committed as [string range $cmt_id 0 7]."
-}
-
-######################################################################
-##
-## fetch push
-
-proc fetch_from {remote} {
-       set w [new_console \
-               "fetch $remote" \
-               "Fetching new changes from $remote"]
-       set cmd [list git fetch]
-       lappend cmd $remote
-       console_exec $w $cmd console_done
-}
-
-proc push_to {remote} {
-       set w [new_console \
-               "push $remote" \
-               "Pushing changes to $remote"]
-       set cmd [list git push]
-       lappend cmd -v
-       lappend cmd $remote
-       console_exec $w $cmd console_done
-}
-
-######################################################################
-##
-## ui helpers
-
-proc mapicon {w state path} {
-       global all_icons
-
-       if {[catch {set r $all_icons($state$w)}]} {
-               puts "error: no icon for $w state={$state} $path"
-               return file_plain
-       }
-       return $r
-}
-
-proc mapdesc {state path} {
-       global all_descs
-
-       if {[catch {set r $all_descs($state)}]} {
-               puts "error: no desc for state={$state} $path"
-               return $state
-       }
-       return $r
-}
-
-proc escape_path {path} {
-       regsub -all {\\} $path "\\\\" path
-       regsub -all "\n" $path "\\n" path
-       return $path
-}
-
-proc short_path {path} {
-       return [escape_path [lindex [file split $path] end]]
-}
-
-set next_icon_id 0
-set null_sha1 [string repeat 0 40]
-
-proc merge_state {path new_state {head_info {}} {index_info {}}} {
-       global file_states next_icon_id null_sha1
-
-       set s0 [string index $new_state 0]
-       set s1 [string index $new_state 1]
-
-       if {[catch {set info $file_states($path)}]} {
-               set state __
-               set icon n[incr next_icon_id]
-       } else {
-               set state [lindex $info 0]
-               set icon [lindex $info 1]
-               if {$head_info eq {}}  {set head_info  [lindex $info 2]}
-               if {$index_info eq {}} {set index_info [lindex $info 3]}
-       }
-
-       if     {$s0 eq {?}} {set s0 [string index $state 0]} \
-       elseif {$s0 eq {_}} {set s0 _}
-
-       if     {$s1 eq {?}} {set s1 [string index $state 1]} \
-       elseif {$s1 eq {_}} {set s1 _}
-
-       if {$s0 eq {A} && $s1 eq {_} && $head_info eq {}} {
-               set head_info [list 0 $null_sha1]
-       } elseif {$s0 ne {_} && [string index $state 0] eq {_}
-               && $head_info eq {}} {
-               set head_info $index_info
-       }
-
-       set file_states($path) [list $s0$s1 $icon \
-               $head_info $index_info \
-               ]
-       return $state
-}
-
-proc display_file_helper {w path icon_name old_m new_m} {
-       global file_lists
-
-       if {$new_m eq {_}} {
-               set lno [lsearch -sorted -exact $file_lists($w) $path]
-               if {$lno >= 0} {
-                       set file_lists($w) [lreplace $file_lists($w) $lno $lno]
-                       incr lno
-                       $w conf -state normal
-                       $w delete $lno.0 [expr {$lno + 1}].0
-                       $w conf -state disabled
-               }
-       } elseif {$old_m eq {_} && $new_m ne {_}} {
-               lappend file_lists($w) $path
-               set file_lists($w) [lsort -unique $file_lists($w)]
-               set lno [lsearch -sorted -exact $file_lists($w) $path]
-               incr lno
-               $w conf -state normal
-               $w image create $lno.0 \
-                       -align center -padx 5 -pady 1 \
-                       -name $icon_name \
-                       -image [mapicon $w $new_m $path]
-               $w insert $lno.1 "[escape_path $path]\n"
-               $w conf -state disabled
-       } elseif {$old_m ne $new_m} {
-               $w conf -state normal
-               $w image conf $icon_name -image [mapicon $w $new_m $path]
-               $w conf -state disabled
-       }
-}
-
-proc display_file {path state} {
-       global file_states selected_paths
-       global ui_index ui_workdir
-
-       set old_m [merge_state $path $state]
-       set s $file_states($path)
-       set new_m [lindex $s 0]
-       set icon_name [lindex $s 1]
-
-       set o [string index $old_m 0]
-       set n [string index $new_m 0]
-       if {$o eq {U}} {
-               set o _
-       }
-       if {$n eq {U}} {
-               set n _
-       }
-       display_file_helper     $ui_index $path $icon_name $o $n
-
-       if {[string index $old_m 0] eq {U}} {
-               set o U
-       } else {
-               set o [string index $old_m 1]
-       }
-       if {[string index $new_m 0] eq {U}} {
-               set n U
-       } else {
-               set n [string index $new_m 1]
-       }
-       display_file_helper     $ui_workdir $path $icon_name $o $n
-
-       if {$new_m eq {__}} {
-               unset file_states($path)
-               catch {unset selected_paths($path)}
-       }
-}
-
-proc display_all_files_helper {w path icon_name m} {
-       global file_lists
-
-       lappend file_lists($w) $path
-       set lno [expr {[lindex [split [$w index end] .] 0] - 1}]
-       $w image create end \
-               -align center -padx 5 -pady 1 \
-               -name $icon_name \
-               -image [mapicon $w $m $path]
-       $w insert end "[escape_path $path]\n"
-}
-
-proc display_all_files {} {
-       global ui_index ui_workdir
-       global file_states file_lists
-       global last_clicked
-
-       $ui_index conf -state normal
-       $ui_workdir conf -state normal
-
-       $ui_index delete 0.0 end
-       $ui_workdir delete 0.0 end
-       set last_clicked {}
-
-       set file_lists($ui_index) [list]
-       set file_lists($ui_workdir) [list]
-
-       foreach path [lsort [array names file_states]] {
-               set s $file_states($path)
-               set m [lindex $s 0]
-               set icon_name [lindex $s 1]
-
-               set s [string index $m 0]
-               if {$s ne {U} && $s ne {_}} {
-                       display_all_files_helper $ui_index $path \
-                               $icon_name $s
-               }
-
-               if {[string index $m 0] eq {U}} {
-                       set s U
-               } else {
-                       set s [string index $m 1]
-               }
-               if {$s ne {_}} {
-                       display_all_files_helper $ui_workdir $path \
-                               $icon_name $s
-               }
-       }
-
-       $ui_index conf -state disabled
-       $ui_workdir conf -state disabled
-}
-
-proc update_indexinfo {msg pathList after} {
-       global update_index_cp ui_status_value
-
-       if {![lock_index update]} return
-
-       set update_index_cp 0
-       set pathList [lsort $pathList]
-       set totalCnt [llength $pathList]
-       set batch [expr {int($totalCnt * .01) + 1}]
-       if {$batch > 25} {set batch 25}
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               0.0]
-       set fd [open "| git update-index -z --index-info" w]
-       fconfigure $fd \
-               -blocking 0 \
-               -buffering full \
-               -buffersize 512 \
-               -encoding binary \
-               -translation binary
-       fileevent $fd writable [list \
-               write_update_indexinfo \
-               $fd \
-               $pathList \
-               $totalCnt \
-               $batch \
-               $msg \
-               $after \
-               ]
-}
-
-proc write_update_indexinfo {fd pathList totalCnt batch msg after} {
-       global update_index_cp ui_status_value
-       global file_states current_diff_path
-
-       if {$update_index_cp >= $totalCnt} {
-               close $fd
-               unlock_index
-               uplevel #0 $after
-               return
-       }
-
-       for {set i $batch} \
-               {$update_index_cp < $totalCnt && $i > 0} \
-               {incr i -1} {
-               set path [lindex $pathList $update_index_cp]
-               incr update_index_cp
-
-               set s $file_states($path)
-               switch -glob -- [lindex $s 0] {
-               A? {set new _O}
-               M? {set new _M}
-               D_ {set new _D}
-               D? {set new _?}
-               ?? {continue}
-               }
-               set info [lindex $s 2]
-               if {$info eq {}} continue
-
-               puts -nonewline $fd "$info\t[encoding convertto $path]\0"
-               display_file $path $new
-       }
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               [expr {100.0 * $update_index_cp / $totalCnt}]]
-}
-
-proc update_index {msg pathList after} {
-       global update_index_cp ui_status_value
-
-       if {![lock_index update]} return
-
-       set update_index_cp 0
-       set pathList [lsort $pathList]
-       set totalCnt [llength $pathList]
-       set batch [expr {int($totalCnt * .01) + 1}]
-       if {$batch > 25} {set batch 25}
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               0.0]
-       set fd [open "| git update-index --add --remove -z --stdin" w]
-       fconfigure $fd \
-               -blocking 0 \
-               -buffering full \
-               -buffersize 512 \
-               -encoding binary \
-               -translation binary
-       fileevent $fd writable [list \
-               write_update_index \
-               $fd \
-               $pathList \
-               $totalCnt \
-               $batch \
-               $msg \
-               $after \
-               ]
-}
-
-proc write_update_index {fd pathList totalCnt batch msg after} {
-       global update_index_cp ui_status_value
-       global file_states current_diff_path
-
-       if {$update_index_cp >= $totalCnt} {
-               close $fd
-               unlock_index
-               uplevel #0 $after
-               return
-       }
-
-       for {set i $batch} \
-               {$update_index_cp < $totalCnt && $i > 0} \
-               {incr i -1} {
-               set path [lindex $pathList $update_index_cp]
-               incr update_index_cp
-
-               switch -glob -- [lindex $file_states($path) 0] {
-               AD {set new __}
-               ?D {set new D_}
-               _O -
-               AM {set new A_}
-               U? {
-                       if {[file exists $path]} {
-                               set new M_
-                       } else {
-                               set new D_
-                       }
-               }
-               ?M {set new M_}
-               ?? {continue}
-               }
-               puts -nonewline $fd "[encoding convertto $path]\0"
-               display_file $path $new
-       }
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               [expr {100.0 * $update_index_cp / $totalCnt}]]
-}
-
-proc checkout_index {msg pathList after} {
-       global update_index_cp ui_status_value
-
-       if {![lock_index update]} return
-
-       set update_index_cp 0
-       set pathList [lsort $pathList]
-       set totalCnt [llength $pathList]
-       set batch [expr {int($totalCnt * .01) + 1}]
-       if {$batch > 25} {set batch 25}
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               0.0]
-       set cmd [list git checkout-index]
-       lappend cmd --index
-       lappend cmd --quiet
-       lappend cmd --force
-       lappend cmd -z
-       lappend cmd --stdin
-       set fd [open "| $cmd " w]
-       fconfigure $fd \
-               -blocking 0 \
-               -buffering full \
-               -buffersize 512 \
-               -encoding binary \
-               -translation binary
-       fileevent $fd writable [list \
-               write_checkout_index \
-               $fd \
-               $pathList \
-               $totalCnt \
-               $batch \
-               $msg \
-               $after \
-               ]
-}
-
-proc write_checkout_index {fd pathList totalCnt batch msg after} {
-       global update_index_cp ui_status_value
-       global file_states current_diff_path
-
-       if {$update_index_cp >= $totalCnt} {
-               close $fd
-               unlock_index
-               uplevel #0 $after
-               return
-       }
-
-       for {set i $batch} \
-               {$update_index_cp < $totalCnt && $i > 0} \
-               {incr i -1} {
-               set path [lindex $pathList $update_index_cp]
-               incr update_index_cp
-               switch -glob -- [lindex $file_states($path) 0] {
-               U? {continue}
-               ?M -
-               ?D {
-                       puts -nonewline $fd "[encoding convertto $path]\0"
-                       display_file $path ?_
-               }
-               }
-       }
-
-       set ui_status_value [format \
-               "$msg... %i/%i files (%.2f%%)" \
-               $update_index_cp \
-               $totalCnt \
-               [expr {100.0 * $update_index_cp / $totalCnt}]]
-}
-
-######################################################################
-##
-## branch management
-
-proc is_tracking_branch {name} {
-       global tracking_branches
-
-       if {![catch {set info $tracking_branches($name)}]} {
-               return 1
-       }
-       foreach t [array names tracking_branches] {
-               if {[string match {*/\*} $t] && [string match $t $name]} {
-                       return 1
-               }
-       }
-       return 0
-}
-
-proc load_all_heads {} {
-       global all_heads
-
-       set all_heads [list]
-       set fd [open "| git for-each-ref --format=%(refname) refs/heads" r]
-       while {[gets $fd line] > 0} {
-               if {[is_tracking_branch $line]} continue
-               if {![regsub ^refs/heads/ $line {} name]} continue
-               lappend all_heads $name
-       }
-       close $fd
-
-       set all_heads [lsort $all_heads]
-}
-
-proc populate_branch_menu {} {
-       global all_heads disable_on_lock
-
-       set m .mbar.branch
-       set last [$m index last]
-       for {set i 0} {$i <= $last} {incr i} {
-               if {[$m type $i] eq {separator}} {
-                       $m delete $i last
-                       set new_dol [list]
-                       foreach a $disable_on_lock {
-                               if {[lindex $a 0] ne $m || [lindex $a 2] < $i} {
-                                       lappend new_dol $a
-                               }
-                       }
-                       set disable_on_lock $new_dol
-                       break
-               }
-       }
-
-       if {$all_heads ne {}} {
-               $m add separator
-       }
-       foreach b $all_heads {
-               $m add radiobutton \
-                       -label $b \
-                       -command [list switch_branch $b] \
-                       -variable current_branch \
-                       -value $b \
-                       -font font_ui
-               lappend disable_on_lock \
-                       [list $m entryconf [$m index last] -state]
-       }
-}
-
-proc all_tracking_branches {} {
-       global tracking_branches
-
-       set all_trackings {}
-       set cmd {}
-       foreach name [array names tracking_branches] {
-               if {[regsub {/\*$} $name {} name]} {
-                       lappend cmd $name
-               } else {
-                       regsub ^refs/(heads|remotes)/ $name {} name
-                       lappend all_trackings $name
-               }
-       }
-
-       if {$cmd ne {}} {
-               set fd [open "| git for-each-ref --format=%(refname) $cmd" r]
-               while {[gets $fd name] > 0} {
-                       regsub ^refs/(heads|remotes)/ $name {} name
-                       lappend all_trackings $name
-               }
-               close $fd
-       }
-
-       return [lsort -unique $all_trackings]
-}
-
-proc do_create_branch_action {w} {
-       global all_heads null_sha1 repo_config
-       global create_branch_checkout create_branch_revtype
-       global create_branch_head create_branch_trackinghead
-       global create_branch_name create_branch_revexp
-
-       set newbranch $create_branch_name
-       if {$newbranch eq {}
-               || $newbranch eq $repo_config(gui.newbranchtemplate)} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Please supply a branch name."
-               focus $w.desc.name_t
-               return
-       }
-       if {![catch {exec git show-ref --verify -- "refs/heads/$newbranch"}]} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Branch '$newbranch' already exists."
-               focus $w.desc.name_t
-               return
-       }
-       if {[catch {exec git check-ref-format "heads/$newbranch"}]} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "We do not like '$newbranch' as a branch name."
-               focus $w.desc.name_t
-               return
-       }
-
-       set rev {}
-       switch -- $create_branch_revtype {
-       head {set rev $create_branch_head}
-       tracking {set rev $create_branch_trackinghead}
-       expression {set rev $create_branch_revexp}
-       }
-       if {[catch {set cmt [exec git rev-parse --verify "${rev}^0"]}]} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Invalid starting revision: $rev"
-               return
-       }
-       set cmd [list git update-ref]
-       lappend cmd -m
-       lappend cmd "branch: Created from $rev"
-       lappend cmd "refs/heads/$newbranch"
-       lappend cmd $cmt
-       lappend cmd $null_sha1
-       if {[catch {eval exec $cmd} err]} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Failed to create '$newbranch'.\n\n$err"
-               return
-       }
-
-       lappend all_heads $newbranch
-       set all_heads [lsort $all_heads]
-       populate_branch_menu
-       destroy $w
-       if {$create_branch_checkout} {
-               switch_branch $newbranch
-       }
-}
-
-proc radio_selector {varname value args} {
-       upvar #0 $varname var
-       set var $value
-}
-
-trace add variable create_branch_head write \
-       [list radio_selector create_branch_revtype head]
-trace add variable create_branch_trackinghead write \
-       [list radio_selector create_branch_revtype tracking]
-
-trace add variable delete_branch_head write \
-       [list radio_selector delete_branch_checktype head]
-trace add variable delete_branch_trackinghead write \
-       [list radio_selector delete_branch_checktype tracking]
-
-proc do_create_branch {} {
-       global all_heads current_branch repo_config
-       global create_branch_checkout create_branch_revtype
-       global create_branch_head create_branch_trackinghead
-       global create_branch_name create_branch_revexp
-
-       set w .branch_editor
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text {Create New Branch} \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.create -text Create \
-               -font font_ui \
-               -default active \
-               -command [list do_create_branch_action $w]
-       pack $w.buttons.create -side right
-       button $w.buttons.cancel -text {Cancel} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.cancel -side right -padx 5
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       labelframe $w.desc \
-               -text {Branch Description} \
-               -font font_ui
-       label $w.desc.name_l -text {Name:} -font font_ui
-       entry $w.desc.name_t \
-               -borderwidth 1 \
-               -relief sunken \
-               -width 40 \
-               -textvariable create_branch_name \
-               -font font_ui \
-               -validate key \
-               -validatecommand {
-                       if {%d == 1 && [regexp {[~^:?*\[\0- ]} %S]} {return 0}
-                       return 1
-               }
-       grid $w.desc.name_l $w.desc.name_t -sticky we -padx {0 5}
-       grid columnconfigure $w.desc 1 -weight 1
-       pack $w.desc -anchor nw -fill x -pady 5 -padx 5
-
-       labelframe $w.from \
-               -text {Starting Revision} \
-               -font font_ui
-       radiobutton $w.from.head_r \
-               -text {Local Branch:} \
-               -value head \
-               -variable create_branch_revtype \
-               -font font_ui
-       eval tk_optionMenu $w.from.head_m create_branch_head $all_heads
-       grid $w.from.head_r $w.from.head_m -sticky w
-       set all_trackings [all_tracking_branches]
-       if {$all_trackings ne {}} {
-               set create_branch_trackinghead [lindex $all_trackings 0]
-               radiobutton $w.from.tracking_r \
-                       -text {Tracking Branch:} \
-                       -value tracking \
-                       -variable create_branch_revtype \
-                       -font font_ui
-               eval tk_optionMenu $w.from.tracking_m \
-                       create_branch_trackinghead \
-                       $all_trackings
-               grid $w.from.tracking_r $w.from.tracking_m -sticky w
-       }
-       radiobutton $w.from.exp_r \
-               -text {Revision Expression:} \
-               -value expression \
-               -variable create_branch_revtype \
-               -font font_ui
-       entry $w.from.exp_t \
-               -borderwidth 1 \
-               -relief sunken \
-               -width 50 \
-               -textvariable create_branch_revexp \
-               -font font_ui \
-               -validate key \
-               -validatecommand {
-                       if {%d == 1 && [regexp {\s} %S]} {return 0}
-                       if {%d == 1 && [string length %S] > 0} {
-                               set create_branch_revtype expression
-                       }
-                       return 1
-               }
-       grid $w.from.exp_r $w.from.exp_t -sticky we -padx {0 5}
-       grid columnconfigure $w.from 1 -weight 1
-       pack $w.from -anchor nw -fill x -pady 5 -padx 5
-
-       labelframe $w.postActions \
-               -text {Post Creation Actions} \
-               -font font_ui
-       checkbutton $w.postActions.checkout \
-               -text {Checkout after creation} \
-               -variable create_branch_checkout \
-               -font font_ui
-       pack $w.postActions.checkout -anchor nw
-       pack $w.postActions -anchor nw -fill x -pady 5 -padx 5
-
-       set create_branch_checkout 1
-       set create_branch_head $current_branch
-       set create_branch_revtype head
-       set create_branch_name $repo_config(gui.newbranchtemplate)
-       set create_branch_revexp {}
-
-       bind $w <Visibility> "
-               grab $w
-               $w.desc.name_t icursor end
-               focus $w.desc.name_t
-       "
-       bind $w <Key-Escape> "destroy $w"
-       bind $w <Key-Return> "do_create_branch_action $w;break"
-       wm title $w "[appname] ([reponame]): Create Branch"
-       tkwait window $w
-}
-
-proc do_delete_branch_action {w} {
-       global all_heads
-       global delete_branch_checktype delete_branch_head delete_branch_trackinghead
-
-       set check_rev {}
-       switch -- $delete_branch_checktype {
-       head {set check_rev $delete_branch_head}
-       tracking {set check_rev $delete_branch_trackinghead}
-       always {set check_rev {:none}}
-       }
-       if {$check_rev eq {:none}} {
-               set check_cmt {}
-       } elseif {[catch {set check_cmt [exec git rev-parse --verify "${check_rev}^0"]}]} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Invalid check revision: $check_rev"
-               return
-       }
-
-       set to_delete [list]
-       set not_merged [list]
-       foreach i [$w.list.l curselection] {
-               set b [$w.list.l get $i]
-               if {[catch {set o [exec git rev-parse --verify $b]}]} continue
-               if {$check_cmt ne {}} {
-                       if {$b eq $check_rev} continue
-                       if {[catch {set m [exec git merge-base $o $check_cmt]}]} continue
-                       if {$o ne $m} {
-                               lappend not_merged $b
-                               continue
-                       }
-               }
-               lappend to_delete [list $b $o]
-       }
-       if {$not_merged ne {}} {
-               set msg "The following branches are not completely merged into $check_rev:
-
- - [join $not_merged "\n - "]"
-               tk_messageBox \
-                       -icon info \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message $msg
-       }
-       if {$to_delete eq {}} return
-       if {$delete_branch_checktype eq {always}} {
-               set msg {Recovering deleted branches is difficult.
-
-Delete the selected branches?}
-               if {[tk_messageBox \
-                       -icon warning \
-                       -type yesno \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message $msg] ne yes} {
-                       return
-               }
-       }
-
-       set failed {}
-       foreach i $to_delete {
-               set b [lindex $i 0]
-               set o [lindex $i 1]
-               if {[catch {exec git update-ref -d "refs/heads/$b" $o} err]} {
-                       append failed " - $b: $err\n"
-               } else {
-                       set x [lsearch -sorted -exact $all_heads $b]
-                       if {$x >= 0} {
-                               set all_heads [lreplace $all_heads $x $x]
-                       }
-               }
-       }
-
-       if {$failed ne {}} {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Failed to delete branches:\n$failed"
-       }
-
-       set all_heads [lsort $all_heads]
-       populate_branch_menu
-       destroy $w
-}
-
-proc do_delete_branch {} {
-       global all_heads tracking_branches current_branch
-       global delete_branch_checktype delete_branch_head delete_branch_trackinghead
-
-       set w .branch_editor
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text {Delete Local Branch} \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.create -text Delete \
-               -font font_ui \
-               -command [list do_delete_branch_action $w]
-       pack $w.buttons.create -side right
-       button $w.buttons.cancel -text {Cancel} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.cancel -side right -padx 5
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       labelframe $w.list \
-               -text {Local Branches} \
-               -font font_ui
-       listbox $w.list.l \
-               -height 10 \
-               -width 70 \
-               -selectmode extended \
-               -yscrollcommand [list $w.list.sby set] \
-               -font font_ui
-       foreach h $all_heads {
-               if {$h ne $current_branch} {
-                       $w.list.l insert end $h
-               }
-       }
-       scrollbar $w.list.sby -command [list $w.list.l yview]
-       pack $w.list.sby -side right -fill y
-       pack $w.list.l -side left -fill both -expand 1
-       pack $w.list -fill both -expand 1 -pady 5 -padx 5
-
-       labelframe $w.validate \
-               -text {Delete Only If} \
-               -font font_ui
-       radiobutton $w.validate.head_r \
-               -text {Merged Into Local Branch:} \
-               -value head \
-               -variable delete_branch_checktype \
-               -font font_ui
-       eval tk_optionMenu $w.validate.head_m delete_branch_head $all_heads
-       grid $w.validate.head_r $w.validate.head_m -sticky w
-       set all_trackings [all_tracking_branches]
-       if {$all_trackings ne {}} {
-               set delete_branch_trackinghead [lindex $all_trackings 0]
-               radiobutton $w.validate.tracking_r \
-                       -text {Merged Into Tracking Branch:} \
-                       -value tracking \
-                       -variable delete_branch_checktype \
-                       -font font_ui
-               eval tk_optionMenu $w.validate.tracking_m \
-                       delete_branch_trackinghead \
-                       $all_trackings
-               grid $w.validate.tracking_r $w.validate.tracking_m -sticky w
-       }
-       radiobutton $w.validate.always_r \
-               -text {Always (Do not perform merge checks)} \
-               -value always \
-               -variable delete_branch_checktype \
-               -font font_ui
-       grid $w.validate.always_r -columnspan 2 -sticky w
-       grid columnconfigure $w.validate 1 -weight 1
-       pack $w.validate -anchor nw -fill x -pady 5 -padx 5
-
-       set delete_branch_head $current_branch
-       set delete_branch_checktype head
-
-       bind $w <Visibility> "grab $w; focus $w"
-       bind $w <Key-Escape> "destroy $w"
-       wm title $w "[appname] ([reponame]): Delete Branch"
-       tkwait window $w
-}
-
-proc switch_branch {new_branch} {
-       global HEAD commit_type current_branch repo_config
-
-       if {![lock_index switch]} return
-
-       # -- Our in memory state should match the repository.
-       #
-       repository_state curType curHEAD curMERGE_HEAD
-       if {[string match amend* $commit_type]
-               && $curType eq {normal}
-               && $curHEAD eq $HEAD} {
-       } elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
-               info_popup {Last scanned state does not match repository state.
-
-Another Git program has modified this repository
-since the last scan.  A rescan must be performed
-before the current branch can be changed.
-
-The rescan will be automatically started now.
-}
-               unlock_index
-               rescan {set ui_status_value {Ready.}}
-               return
-       }
-
-       # -- Don't do a pointless switch.
-       #
-       if {$current_branch eq $new_branch} {
-               unlock_index
-               return
-       }
-
-       if {$repo_config(gui.trustmtime) eq {true}} {
-               switch_branch_stage2 {} $new_branch
-       } else {
-               set ui_status_value {Refreshing file status...}
-               set cmd [list git update-index]
-               lappend cmd -q
-               lappend cmd --unmerged
-               lappend cmd --ignore-missing
-               lappend cmd --refresh
-               set fd_rf [open "| $cmd" r]
-               fconfigure $fd_rf -blocking 0 -translation binary
-               fileevent $fd_rf readable \
-                       [list switch_branch_stage2 $fd_rf $new_branch]
-       }
-}
-
-proc switch_branch_stage2 {fd_rf new_branch} {
-       global ui_status_value HEAD
-
-       if {$fd_rf ne {}} {
-               read $fd_rf
-               if {![eof $fd_rf]} return
-               close $fd_rf
-       }
-
-       set ui_status_value "Updating working directory to '$new_branch'..."
-       set cmd [list git read-tree]
-       lappend cmd -m
-       lappend cmd -u
-       lappend cmd --exclude-per-directory=.gitignore
-       lappend cmd $HEAD
-       lappend cmd $new_branch
-       set fd_rt [open "| $cmd" r]
-       fconfigure $fd_rt -blocking 0 -translation binary
-       fileevent $fd_rt readable \
-               [list switch_branch_readtree_wait $fd_rt $new_branch]
-}
-
-proc switch_branch_readtree_wait {fd_rt new_branch} {
-       global selected_commit_type commit_type HEAD MERGE_HEAD PARENT
-       global current_branch
-       global ui_comm ui_status_value
-
-       # -- We never get interesting output on stdout; only stderr.
-       #
-       read $fd_rt
-       fconfigure $fd_rt -blocking 1
-       if {![eof $fd_rt]} {
-               fconfigure $fd_rt -blocking 0
-               return
-       }
-
-       # -- The working directory wasn't in sync with the index and
-       #    we'd have to overwrite something to make the switch. A
-       #    merge is required.
-       #
-       if {[catch {close $fd_rt} err]} {
-               regsub {^fatal: } $err {} err
-               warn_popup "File level merge required.
-
-$err
-
-Staying on branch '$current_branch'."
-               set ui_status_value "Aborted checkout of '$new_branch' (file level merging is required)."
-               unlock_index
-               return
-       }
-
-       # -- Update the symbolic ref.  Core git doesn't even check for failure
-       #    here, it Just Works(tm).  If it doesn't we are in some really ugly
-       #    state that is difficult to recover from within git-gui.
-       #
-       if {[catch {exec git symbolic-ref HEAD "refs/heads/$new_branch"} err]} {
-               error_popup "Failed to set current branch.
-
-This working directory is only partially switched.
-We successfully updated your files, but failed to
-update an internal Git file.
-
-This should not have occurred.  [appname] will now
-close and give up.
-
-$err"
-               do_quit
-               return
-       }
-
-       # -- Update our repository state.  If we were previously in amend mode
-       #    we need to toss the current buffer and do a full rescan to update
-       #    our file lists.  If we weren't in amend mode our file lists are
-       #    accurate and we can avoid the rescan.
-       #
-       unlock_index
-       set selected_commit_type new
-       if {[string match amend* $commit_type]} {
-               $ui_comm delete 0.0 end
-               $ui_comm edit reset
-               $ui_comm edit modified false
-               rescan {set ui_status_value "Checked out branch '$current_branch'."}
-       } else {
-               repository_state commit_type HEAD MERGE_HEAD
-               set PARENT $HEAD
-               set ui_status_value "Checked out branch '$current_branch'."
-       }
-}
-
-######################################################################
-##
-## remote management
-
-proc load_all_remotes {} {
-       global repo_config
-       global all_remotes tracking_branches
-
-       set all_remotes [list]
-       array unset tracking_branches
-
-       set rm_dir [gitdir remotes]
-       if {[file isdirectory $rm_dir]} {
-               set all_remotes [glob \
-                       -types f \
-                       -tails \
-                       -nocomplain \
-                       -directory $rm_dir *]
-
-               foreach name $all_remotes {
-                       catch {
-                               set fd [open [file join $rm_dir $name] r]
-                               while {[gets $fd line] >= 0} {
-                                       if {![regexp {^Pull:[   ]*([^:]+):(.+)$} \
-                                               $line line src dst]} continue
-                                       if {![regexp ^refs/ $dst]} {
-                                               set dst "refs/heads/$dst"
-                                       }
-                                       set tracking_branches($dst) [list $name $src]
-                               }
-                               close $fd
-                       }
-               }
-       }
-
-       foreach line [array names repo_config remote.*.url] {
-               if {![regexp ^remote\.(.*)\.url\$ $line line name]} continue
-               lappend all_remotes $name
-
-               if {[catch {set fl $repo_config(remote.$name.fetch)}]} {
-                       set fl {}
-               }
-               foreach line $fl {
-                       if {![regexp {^([^:]+):(.+)$} $line line src dst]} continue
-                       if {![regexp ^refs/ $dst]} {
-                               set dst "refs/heads/$dst"
-                       }
-                       set tracking_branches($dst) [list $name $src]
-               }
-       }
-
-       set all_remotes [lsort -unique $all_remotes]
-}
-
-proc populate_fetch_menu {} {
-       global all_remotes repo_config
-
-       set m .mbar.fetch
-       foreach r $all_remotes {
-               set enable 0
-               if {![catch {set a $repo_config(remote.$r.url)}]} {
-                       if {![catch {set a $repo_config(remote.$r.fetch)}]} {
-                               set enable 1
-                       }
-               } else {
-                       catch {
-                               set fd [open [gitdir remotes $r] r]
-                               while {[gets $fd n] >= 0} {
-                                       if {[regexp {^Pull:[ \t]*([^:]+):} $n]} {
-                                               set enable 1
-                                               break
-                                       }
-                               }
-                               close $fd
-                       }
-               }
-
-               if {$enable} {
-                       $m add command \
-                               -label "Fetch from $r..." \
-                               -command [list fetch_from $r] \
-                               -font font_ui
-               }
-       }
-}
-
-proc populate_push_menu {} {
-       global all_remotes repo_config
-
-       set m .mbar.push
-       set fast_count 0
-       foreach r $all_remotes {
-               set enable 0
-               if {![catch {set a $repo_config(remote.$r.url)}]} {
-                       if {![catch {set a $repo_config(remote.$r.push)}]} {
-                               set enable 1
-                       }
-               } else {
-                       catch {
-                               set fd [open [gitdir remotes $r] r]
-                               while {[gets $fd n] >= 0} {
-                                       if {[regexp {^Push:[ \t]*([^:]+):} $n]} {
-                                               set enable 1
-                                               break
-                                       }
-                               }
-                               close $fd
-                       }
-               }
-
-               if {$enable} {
-                       if {!$fast_count} {
-                               $m add separator
-                       }
-                       $m add command \
-                               -label "Push to $r..." \
-                               -command [list push_to $r] \
-                               -font font_ui
-                       incr fast_count
-               }
-       }
-}
-
-proc start_push_anywhere_action {w} {
-       global push_urltype push_remote push_url push_thin push_tags
-
-       set r_url {}
-       switch -- $push_urltype {
-       remote {set r_url $push_remote}
-       url {set r_url $push_url}
-       }
-       if {$r_url eq {}} return
-
-       set cmd [list git push]
-       lappend cmd -v
-       if {$push_thin} {
-               lappend cmd --thin
-       }
-       if {$push_tags} {
-               lappend cmd --tags
-       }
-       lappend cmd $r_url
-       set cnt 0
-       foreach i [$w.source.l curselection] {
-               set b [$w.source.l get $i]
-               lappend cmd "refs/heads/$b:refs/heads/$b"
-               incr cnt
-       }
-       if {$cnt == 0} {
-               return
-       } elseif {$cnt == 1} {
-               set unit branch
-       } else {
-               set unit branches
-       }
-
-       set cons [new_console "push $r_url" "Pushing $cnt $unit to $r_url"]
-       console_exec $cons $cmd console_done
-       destroy $w
-}
-
-trace add variable push_remote write \
-       [list radio_selector push_urltype remote]
-
-proc do_push_anywhere {} {
-       global all_heads all_remotes current_branch
-       global push_urltype push_remote push_url push_thin push_tags
-
-       set w .push_setup
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text {Push Branches} -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.create -text Push \
-               -font font_ui \
-               -command [list start_push_anywhere_action $w]
-       pack $w.buttons.create -side right
-       button $w.buttons.cancel -text {Cancel} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.cancel -side right -padx 5
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       labelframe $w.source \
-               -text {Source Branches} \
-               -font font_ui
-       listbox $w.source.l \
-               -height 10 \
-               -width 70 \
-               -selectmode extended \
-               -yscrollcommand [list $w.source.sby set] \
-               -font font_ui
-       foreach h $all_heads {
-               $w.source.l insert end $h
-               if {$h eq $current_branch} {
-                       $w.source.l select set end
-               }
-       }
-       scrollbar $w.source.sby -command [list $w.source.l yview]
-       pack $w.source.sby -side right -fill y
-       pack $w.source.l -side left -fill both -expand 1
-       pack $w.source -fill both -expand 1 -pady 5 -padx 5
-
-       labelframe $w.dest \
-               -text {Destination Repository} \
-               -font font_ui
-       if {$all_remotes ne {}} {
-               radiobutton $w.dest.remote_r \
-                       -text {Remote:} \
-                       -value remote \
-                       -variable push_urltype \
-                       -font font_ui
-               eval tk_optionMenu $w.dest.remote_m push_remote $all_remotes
-               grid $w.dest.remote_r $w.dest.remote_m -sticky w
-               if {[lsearch -sorted -exact $all_remotes origin] != -1} {
-                       set push_remote origin
-               } else {
-                       set push_remote [lindex $all_remotes 0]
-               }
-               set push_urltype remote
-       } else {
-               set push_urltype url
-       }
-       radiobutton $w.dest.url_r \
-               -text {Arbitrary URL:} \
-               -value url \
-               -variable push_urltype \
-               -font font_ui
-       entry $w.dest.url_t \
-               -borderwidth 1 \
-               -relief sunken \
-               -width 50 \
-               -textvariable push_url \
-               -font font_ui \
-               -validate key \
-               -validatecommand {
-                       if {%d == 1 && [regexp {\s} %S]} {return 0}
-                       if {%d == 1 && [string length %S] > 0} {
-                               set push_urltype url
-                       }
-                       return 1
-               }
-       grid $w.dest.url_r $w.dest.url_t -sticky we -padx {0 5}
-       grid columnconfigure $w.dest 1 -weight 1
-       pack $w.dest -anchor nw -fill x -pady 5 -padx 5
-
-       labelframe $w.options \
-               -text {Transfer Options} \
-               -font font_ui
-       checkbutton $w.options.thin \
-               -text {Use thin pack (for slow network connections)} \
-               -variable push_thin \
-               -font font_ui
-       grid $w.options.thin -columnspan 2 -sticky w
-       checkbutton $w.options.tags \
-               -text {Include tags} \
-               -variable push_tags \
-               -font font_ui
-       grid $w.options.tags -columnspan 2 -sticky w
-       grid columnconfigure $w.options 1 -weight 1
-       pack $w.options -anchor nw -fill x -pady 5 -padx 5
-
-       set push_url {}
-       set push_thin 0
-       set push_tags 0
-
-       bind $w <Visibility> "grab $w"
-       bind $w <Key-Escape> "destroy $w"
-       wm title $w "[appname] ([reponame]): Push"
-       tkwait window $w
-}
-
-######################################################################
-##
-## merge
-
-proc can_merge {} {
-       global HEAD commit_type file_states
-
-       if {[string match amend* $commit_type]} {
-               info_popup {Cannot merge while amending.
-
-You must finish amending this commit before
-starting any type of merge.
-}
-               return 0
-       }
-
-       if {[committer_ident] eq {}} {return 0}
-       if {![lock_index merge]} {return 0}
-
-       # -- Our in memory state should match the repository.
-       #
-       repository_state curType curHEAD curMERGE_HEAD
-       if {$commit_type ne $curType || $HEAD ne $curHEAD} {
-               info_popup {Last scanned state does not match repository state.
-
-Another Git program has modified this repository
-since the last scan.  A rescan must be performed
-before a merge can be performed.
-
-The rescan will be automatically started now.
-}
-               unlock_index
-               rescan {set ui_status_value {Ready.}}
-               return 0
-       }
-
-       foreach path [array names file_states] {
-               switch -glob -- [lindex $file_states($path) 0] {
-               _O {
-                       continue; # and pray it works!
-               }
-               U? {
-                       error_popup "You are in the middle of a conflicted merge.
-
-File [short_path $path] has merge conflicts.
-
-You must resolve them, add the file, and commit to
-complete the current merge.  Only then can you
-begin another merge.
-"
-                       unlock_index
-                       return 0
-               }
-               ?? {
-                       error_popup "You are in the middle of a change.
-
-File [short_path $path] is modified.
-
-You should complete the current commit before
-starting a merge.  Doing so will help you abort
-a failed merge, should the need arise.
-"
-                       unlock_index
-                       return 0
-               }
-               }
-       }
-
-       return 1
-}
-
-proc visualize_local_merge {w} {
-       set revs {}
-       foreach i [$w.source.l curselection] {
-               lappend revs [$w.source.l get $i]
-       }
-       if {$revs eq {}} return
-       lappend revs --not HEAD
-       do_gitk $revs
-}
-
-proc start_local_merge_action {w} {
-       global HEAD ui_status_value current_branch
-
-       set cmd [list git merge]
-       set names {}
-       set revcnt 0
-       foreach i [$w.source.l curselection] {
-               set b [$w.source.l get $i]
-               lappend cmd $b
-               lappend names $b
-               incr revcnt
-       }
-
-       if {$revcnt == 0} {
-               return
-       } elseif {$revcnt == 1} {
-               set unit branch
-       } elseif {$revcnt <= 15} {
-               set unit branches
-       } else {
-               tk_messageBox \
-                       -icon error \
-                       -type ok \
-                       -title [wm title $w] \
-                       -parent $w \
-                       -message "Too many branches selected.
-
-You have requested to merge $revcnt branches
-in an octopus merge.  This exceeds Git's
-internal limit of 15 branches per merge.
-
-Please select fewer branches.  To merge more
-than 15 branches, merge the branches in batches.
-"
-               return
-       }
-
-       set msg "Merging $current_branch, [join $names {, }]"
-       set ui_status_value "$msg..."
-       set cons [new_console "Merge" $msg]
-       console_exec $cons $cmd [list finish_merge $revcnt]
-       bind $w <Destroy> {}
-       destroy $w
-}
-
-proc finish_merge {revcnt w ok} {
-       console_done $w $ok
-       if {$ok} {
-               set msg {Merge completed successfully.}
-       } else {
-               if {$revcnt != 1} {
-                       info_popup "Octopus merge failed.
-
-Your merge of $revcnt branches has failed.
-
-There are file-level conflicts between the
-branches which must be resolved manually.
+       $ui_index delete 0.0 end
+       $ui_workdir delete 0.0 end
+       set last_clicked {}
 
-The working directory will now be reset.
+       set file_lists($ui_index) [list]
+       set file_lists($ui_workdir) [list]
 
-You can attempt this merge again
-by merging only one branch at a time." $w
+       foreach path [lsort [array names file_states]] {
+               set s $file_states($path)
+               set m [lindex $s 0]
+               set icon_name [lindex $s 1]
 
-                       set fd [open "| git read-tree --reset -u HEAD" r]
-                       fconfigure $fd -blocking 0 -translation binary
-                       fileevent $fd readable [list reset_hard_wait $fd]
-                       set ui_status_value {Aborting... please wait...}
-                       return
+               set s [string index $m 0]
+               if {$s ne {U} && $s ne {_}} {
+                       display_all_files_helper $ui_index $path \
+                               $icon_name $s
                }
 
-               set msg {Merge failed.  Conflict resolution is required.}
-       }
-       unlock_index
-       rescan [list set ui_status_value $msg]
-}
-
-proc do_local_merge {} {
-       global current_branch
-
-       if {![can_merge]} return
-
-       set w .merge_setup
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header \
-               -text "Merge Into $current_branch" \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.visualize -text Visualize \
-               -font font_ui \
-               -command [list visualize_local_merge $w]
-       pack $w.buttons.visualize -side left
-       button $w.buttons.create -text Merge \
-               -font font_ui \
-               -command [list start_local_merge_action $w]
-       pack $w.buttons.create -side right
-       button $w.buttons.cancel -text {Cancel} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.cancel -side right -padx 5
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       labelframe $w.source \
-               -text {Source Branches} \
-               -font font_ui
-       listbox $w.source.l \
-               -height 10 \
-               -width 70 \
-               -selectmode extended \
-               -yscrollcommand [list $w.source.sby set] \
-               -font font_ui
-       scrollbar $w.source.sby -command [list $w.source.l yview]
-       pack $w.source.sby -side right -fill y
-       pack $w.source.l -side left -fill both -expand 1
-       pack $w.source -fill both -expand 1 -pady 5 -padx 5
-
-       set cmd [list git for-each-ref]
-       lappend cmd {--format=%(objectname) %(refname)}
-       lappend cmd refs/heads
-       lappend cmd refs/remotes
-       set fr_fd [open "| $cmd" r]
-       fconfigure $fr_fd -translation binary
-       while {[gets $fr_fd line] > 0} {
-               set line [split $line { }]
-               set sha1([lindex $line 0]) [lindex $line 1]
-       }
-       close $fr_fd
-
-       set to_show {}
-       set fr_fd [open "| git rev-list --all --not HEAD"]
-       while {[gets $fr_fd line] > 0} {
-               if {[catch {set ref $sha1($line)}]} continue
-               regsub ^refs/(heads|remotes)/ $ref {} ref
-               lappend to_show $ref
-       }
-       close $fr_fd
-
-       foreach ref [lsort -unique $to_show] {
-               $w.source.l insert end $ref
-       }
-
-       bind $w <Visibility> "grab $w"
-       bind $w <Key-Escape> "unlock_index;destroy $w"
-       bind $w <Destroy> unlock_index
-       wm title $w "[appname] ([reponame]): Merge"
-       tkwait window $w
-}
-
-proc do_reset_hard {} {
-       global HEAD commit_type file_states
-
-       if {[string match amend* $commit_type]} {
-               info_popup {Cannot abort while amending.
-
-You must finish amending this commit.
-}
-               return
-       }
-
-       if {![lock_index abort]} return
-
-       if {[string match *merge* $commit_type]} {
-               set op merge
-       } else {
-               set op commit
-       }
-
-       if {[ask_popup "Abort $op?
-
-Aborting the current $op will cause
-*ALL* uncommitted changes to be lost.
-
-Continue with aborting the current $op?"] eq {yes}} {
-               set fd [open "| git read-tree --reset -u HEAD" r]
-               fconfigure $fd -blocking 0 -translation binary
-               fileevent $fd readable [list reset_hard_wait $fd]
-               set ui_status_value {Aborting... please wait...}
-       } else {
-               unlock_index
-       }
-}
-
-proc reset_hard_wait {fd} {
-       global ui_comm
-
-       read $fd
-       if {[eof $fd]} {
-               close $fd
-               unlock_index
-
-               $ui_comm delete 0.0 end
-               $ui_comm edit modified false
-
-               catch {file delete [gitdir MERGE_HEAD]}
-               catch {file delete [gitdir rr-cache MERGE_RR]}
-               catch {file delete [gitdir SQUASH_MSG]}
-               catch {file delete [gitdir MERGE_MSG]}
-               catch {file delete [gitdir GITGUI_MSG]}
-
-               rescan {set ui_status_value {Abort completed.  Ready.}}
-       }
-}
-
-######################################################################
-##
-## browser
-
-set next_browser_id 0
-
-proc new_browser {commit} {
-       global next_browser_id cursor_ptr M1B
-       global browser_commit browser_status browser_stack browser_path browser_busy
-
-       set w .browser[incr next_browser_id]
-       set w_list $w.list.l
-       set browser_commit($w_list) $commit
-       set browser_status($w_list) {Starting...}
-       set browser_stack($w_list) {}
-       set browser_path($w_list) $browser_commit($w_list):
-       set browser_busy($w_list) 1
-
-       toplevel $w
-       label $w.path -textvariable browser_path($w_list) \
-               -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken \
-               -font font_uibold
-       pack $w.path -anchor w -side top -fill x
-
-       frame $w.list
-       text $w_list -background white -borderwidth 0 \
-               -cursor $cursor_ptr \
-               -state disabled \
-               -wrap none \
-               -height 20 \
-               -width 70 \
-               -xscrollcommand [list $w.list.sbx set] \
-               -yscrollcommand [list $w.list.sby set] \
-               -font font_ui
-       $w_list tag conf in_sel \
-               -background [$w_list cget -foreground] \
-               -foreground [$w_list cget -background]
-       scrollbar $w.list.sbx -orient h -command [list $w_list xview]
-       scrollbar $w.list.sby -orient v -command [list $w_list yview]
-       pack $w.list.sbx -side bottom -fill x
-       pack $w.list.sby -side right -fill y
-       pack $w_list -side left -fill both -expand 1
-       pack $w.list -side top -fill both -expand 1
-
-       label $w.status -textvariable browser_status($w_list) \
-               -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken \
-               -font font_ui
-       pack $w.status -anchor w -side bottom -fill x
-
-       bind $w_list <Button-1>        "browser_click 0 $w_list @%x,%y;break"
-       bind $w_list <Double-Button-1> "browser_click 1 $w_list @%x,%y;break"
-       bind $w_list <$M1B-Up>         "browser_parent $w_list;break"
-       bind $w_list <$M1B-Left>       "browser_parent $w_list;break"
-       bind $w_list <Up>              "browser_move -1 $w_list;break"
-       bind $w_list <Down>            "browser_move 1 $w_list;break"
-       bind $w_list <$M1B-Right>      "browser_enter $w_list;break"
-       bind $w_list <Return>          "browser_enter $w_list;break"
-       bind $w_list <Prior>           "browser_page -1 $w_list;break"
-       bind $w_list <Next>            "browser_page 1 $w_list;break"
-       bind $w_list <Left>            break
-       bind $w_list <Right>           break
-
-       bind $w <Visibility> "focus $w"
-       bind $w <Destroy> "
-               array unset browser_buffer $w_list
-               array unset browser_files $w_list
-               array unset browser_status $w_list
-               array unset browser_stack $w_list
-               array unset browser_path $w_list
-               array unset browser_commit $w_list
-               array unset browser_busy $w_list
-       "
-       wm title $w "[appname] ([reponame]): File Browser"
-       ls_tree $w_list $browser_commit($w_list) {}
-}
-
-proc browser_move {dir w} {
-       global browser_files browser_busy
-
-       if {$browser_busy($w)} return
-       set lno [lindex [split [$w index in_sel.first] .] 0]
-       incr lno $dir
-       if {[lindex $browser_files($w) [expr {$lno - 1}]] ne {}} {
-               $w tag remove in_sel 0.0 end
-               $w tag add in_sel $lno.0 [expr {$lno + 1}].0
-               $w see $lno.0
-       }
-}
-
-proc browser_page {dir w} {
-       global browser_files browser_busy
-
-       if {$browser_busy($w)} return
-       $w yview scroll $dir pages
-       set lno [expr {int(
-                 [lindex [$w yview] 0]
-               * [llength $browser_files($w)]
-               + 1)}]
-       if {[lindex $browser_files($w) [expr {$lno - 1}]] ne {}} {
-               $w tag remove in_sel 0.0 end
-               $w tag add in_sel $lno.0 [expr {$lno + 1}].0
-               $w see $lno.0
-       }
-}
-
-proc browser_parent {w} {
-       global browser_files browser_status browser_path
-       global browser_stack browser_busy
-
-       if {$browser_busy($w)} return
-       set info [lindex $browser_files($w) 0]
-       if {[lindex $info 0] eq {parent}} {
-               set parent [lindex $browser_stack($w) end-1]
-               set browser_stack($w) [lrange $browser_stack($w) 0 end-2]
-               if {$browser_stack($w) eq {}} {
-                       regsub {:.*$} $browser_path($w) {:} browser_path($w)
+               if {[string index $m 0] eq {U}} {
+                       set s U
                } else {
-                       regsub {/[^/]+$} $browser_path($w) {} browser_path($w)
-               }
-               set browser_status($w) "Loading $browser_path($w)..."
-               ls_tree $w [lindex $parent 0] [lindex $parent 1]
-       }
-}
-
-proc browser_enter {w} {
-       global browser_files browser_status browser_path
-       global browser_commit browser_stack browser_busy
-
-       if {$browser_busy($w)} return
-       set lno [lindex [split [$w index in_sel.first] .] 0]
-       set info [lindex $browser_files($w) [expr {$lno - 1}]]
-       if {$info ne {}} {
-               switch -- [lindex $info 0] {
-               parent {
-                       browser_parent $w
-               }
-               tree {
-                       set name [lindex $info 2]
-                       set escn [escape_path $name]
-                       set browser_status($w) "Loading $escn..."
-                       append browser_path($w) $escn
-                       ls_tree $w [lindex $info 1] $name
-               }
-               blob {
-                       set name [lindex $info 2]
-                       set p {}
-                       foreach n $browser_stack($w) {
-                               append p [lindex $n 1]
-                       }
-                       append p $name
-                       show_blame $browser_commit($w) $p
-               }
-               }
-       }
-}
-
-proc browser_click {was_double_click w pos} {
-       global browser_files browser_busy
-
-       if {$browser_busy($w)} return
-       set lno [lindex [split [$w index $pos] .] 0]
-       focus $w
-
-       if {[lindex $browser_files($w) [expr {$lno - 1}]] ne {}} {
-               $w tag remove in_sel 0.0 end
-               $w tag add in_sel $lno.0 [expr {$lno + 1}].0
-               if {$was_double_click} {
-                       browser_enter $w
-               }
-       }
-}
-
-proc ls_tree {w tree_id name} {
-       global browser_buffer browser_files browser_stack browser_busy
-
-       set browser_buffer($w) {}
-       set browser_files($w) {}
-       set browser_busy($w) 1
-
-       $w conf -state normal
-       $w tag remove in_sel 0.0 end
-       $w delete 0.0 end
-       if {$browser_stack($w) ne {}} {
-               $w image create end \
-                       -align center -padx 5 -pady 1 \
-                       -name icon0 \
-                       -image file_uplevel
-               $w insert end {[Up To Parent]}
-               lappend browser_files($w) parent
-       }
-       lappend browser_stack($w) [list $tree_id $name]
-       $w conf -state disabled
-
-       set cmd [list git ls-tree -z $tree_id]
-       set fd [open "| $cmd" r]
-       fconfigure $fd -blocking 0 -translation binary -encoding binary
-       fileevent $fd readable [list read_ls_tree $fd $w]
-}
-
-proc read_ls_tree {fd w} {
-       global browser_buffer browser_files browser_status browser_busy
-
-       if {![winfo exists $w]} {
-               catch {close $fd}
-               return
-       }
-
-       append browser_buffer($w) [read $fd]
-       set pck [split $browser_buffer($w) "\0"]
-       set browser_buffer($w) [lindex $pck end]
-
-       set n [llength $browser_files($w)]
-       $w conf -state normal
-       foreach p [lrange $pck 0 end-1] {
-               set info [split $p "\t"]
-               set path [lindex $info 1]
-               set info [split [lindex $info 0] { }]
-               set type [lindex $info 1]
-               set object [lindex $info 2]
-
-               switch -- $type {
-               blob {
-                       set image file_mod
-               }
-               tree {
-                       set image file_dir
-                       append path /
-               }
-               default {
-                       set image file_question
-               }
-               }
-
-               if {$n > 0} {$w insert end "\n"}
-               $w image create end \
-                       -align center -padx 5 -pady 1 \
-                       -name icon[incr n] \
-                       -image $image
-               $w insert end [escape_path $path]
-               lappend browser_files($w) [list $type $object $path]
-       }
-       $w conf -state disabled
-
-       if {[eof $fd]} {
-               close $fd
-               set browser_status($w) Ready.
-               set browser_busy($w) 0
-               array unset browser_buffer $w
-               if {$n > 0} {
-                       $w tag add in_sel 1.0 2.0
-                       focus -force $w
+                       set s [string index $m 1]
                }
-       }
-}
-
-proc show_blame {commit path} {
-       global next_browser_id blame_status blame_data
-
-       if {[winfo ismapped .]} {
-               set w .browser[incr next_browser_id]
-               set tl $w
-               toplevel $w
-       } else {
-               set w {}
-               set tl .
-       }
-       set blame_status($w) {Loading current file content...}
-       set texts [list]
-
-       label $w.path -text "$commit:$path" \
-               -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken \
-               -font font_uibold
-       pack $w.path -side top -fill x
-
-       set hbg #e2effa
-       frame $w.out
-       label $w.out.commit_l -text Commit \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.commit_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 9 \
-               -font font_diff
-       lappend texts $w.out.commit_t
-
-       label $w.out.author_l -text Author \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.author_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 20 \
-               -font font_diff
-       lappend texts $w.out.author_t
-
-       label $w.out.date_l -text Date \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.date_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width [string length "yyyy-mm-dd hh:mm:ss"] \
-               -font font_diff
-       lappend texts $w.out.date_t
-
-       label $w.out.filename_l -text Filename \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.filename_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 20 \
-               -font font_diff
-       lappend texts $w.out.filename_t
-
-       label $w.out.origlinenumber_l -text {Orig Line} \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.origlinenumber_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 5 \
-               -font font_diff
-       $w.out.origlinenumber_t tag conf linenumber -justify right
-       lappend texts $w.out.origlinenumber_t
-
-       label $w.out.linenumber_l -text {Curr Line} \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.linenumber_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 5 \
-               -font font_diff
-       $w.out.linenumber_t tag conf linenumber -justify right
-       lappend texts $w.out.linenumber_t
-
-       label $w.out.file_l -text {File Content} \
-               -relief solid \
-               -borderwidth 1 \
-               -background $hbg \
-               -font font_uibold
-       text $w.out.file_t \
-               -background white -borderwidth 0 \
-               -state disabled \
-               -wrap none \
-               -height 40 \
-               -width 80 \
-               -xscrollcommand [list $w.out.sbx set] \
-               -font font_diff
-       lappend texts $w.out.file_t
-
-       scrollbar $w.out.sbx -orient h -command [list $w.out.file_t xview]
-       scrollbar $w.out.sby -orient v \
-               -command [list scrollbar2many $texts yview]
-       set labels [list]
-       foreach i $texts {
-               regsub {_t$} $i _l l
-               lappend labels $l
-       }
-       set file_col [expr {[llength $texts] - 1}]
-       eval grid $labels -sticky we
-       eval grid $texts $w.out.sby -sticky nsew
-       grid conf $w.out.sbx -column $file_col -sticky we
-       grid columnconfigure $w.out $file_col -weight 1
-       grid rowconfigure $w.out 1 -weight 1
-       pack $w.out -fill both -expand 1
-
-       label $w.status -textvariable blame_status($w) \
-               -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken \
-               -font font_ui
-       pack $w.status -side bottom -fill x
-
-       menu $w.ctxm -tearoff 0
-       $w.ctxm add command -label "Copy Commit" \
-               -font font_ui \
-               -command "blame_copycommit $w \$cursorW @\$cursorX,\$cursorY"
-
-       foreach i $texts {
-               $i tag conf in_sel \
-                       -background [$i cget -foreground] \
-                       -foreground [$i cget -background]
-               $i conf -yscrollcommand \
-                       [list many2scrollbar $texts yview $w.out.sby]
-               bind $i <Button-1> "blame_highlight $i @%x,%y $texts;break"
-               bind_button3 $i "
-                       set cursorX %x
-                       set cursorY %y
-                       set cursorW %W
-                       tk_popup $w.ctxm %X %Y
-               "
-       }
-
-       set blame_data($w,colors) {}
-
-       bind $tl <Visibility> "focus $tl"
-       bind $tl <Destroy> "
-               array unset blame_status {$w}
-               array unset blame_data $w,*
-       "
-       wm title $tl "[appname] ([reponame]): File Viewer"
-
-       set blame_data($w,total_lines) 0
-       set cmd [list git cat-file blob "$commit:$path"]
-       set fd [open "| $cmd" r]
-       fconfigure $fd -blocking 0 -translation lf -encoding binary
-       fileevent $fd readable [list read_blame_catfile \
-               $fd $w $commit $path \
-               $texts $w.out.linenumber_t $w.out.file_t]
-}
-
-proc read_blame_catfile {fd w commit path texts w_lno w_file} {
-       global blame_status blame_data
-
-       if {![winfo exists $w_file]} {
-               catch {close $fd}
-               return
-       }
-
-       set n $blame_data($w,total_lines)
-       foreach i $texts {$i conf -state normal}
-       while {[gets $fd line] >= 0} {
-               regsub "\r\$" $line {} line
-               incr n
-               $w_lno insert end $n linenumber
-               $w_file insert end $line
-               foreach i $texts {$i insert end "\n"}
-       }
-       foreach i $texts {$i conf -state disabled}
-       set blame_data($w,total_lines) $n
-
-       if {[eof $fd]} {
-               close $fd
-               set blame_status($w) {Loading annotations...}
-               set cmd [list git blame -M -C --incremental]
-               lappend cmd $commit -- $path
-               set fd [open "| $cmd" r]
-               fconfigure $fd -blocking 0 -translation lf -encoding binary
-               set handler [list read_blame_incremental $fd $w]
-               append handler " $texts"
-               fileevent $fd readable $handler
-       }
-}
-
-proc read_blame_incremental {fd w
-       w_commit w_author w_date w_filename w_olno
-       w_lno w_file} {
-       global blame_status blame_data
-
-       if {![winfo exists $w_commit]} {
-               catch {close $fd}
-               return
-       }
-
-       set all [list \
-               $w_commit \
-               $w_author \
-               $w_date \
-               $w_filename \
-               $w_olno \
-               $w_lno \
-               $w_file]
-
-       $w_commit conf -state normal
-       $w_author conf -state normal
-       $w_date conf -state normal
-       $w_filename conf -state normal
-       $w_olno conf -state normal
-
-       while {[gets $fd line] >= 0} {
-               if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
-                       cmit original_line final_line line_count]} {
-                       set blame_data($w,commit) $cmit
-                       set blame_data($w,original_line) $original_line
-                       set blame_data($w,final_line) $final_line
-                       set blame_data($w,line_count) $line_count
-
-                       if {[catch {set g $blame_data($w,$cmit,seen)}]} {
-                               if {$blame_data($w,colors) eq {}} {
-                                       set blame_data($w,colors) {
-                                               yellow
-                                               red
-                                               pink
-                                               orange
-                                               green
-                                               grey
-                                       }
-                               }
-                               set c [lindex $blame_data($w,colors) 0]
-                               set blame_data($w,colors) \
-                                       [lrange $blame_data($w,colors) 1 end]
-                               foreach t $all {
-                                       $t tag conf g$cmit -background $c
-                               }
-                       } else {
-                               set blame_data($w,$cmit,seen) 1
-                       }
-               } elseif {[string match {filename *} $line]} {
-                       set n $blame_data($w,line_count)
-                       set lno $blame_data($w,final_line)
-                       set ol $blame_data($w,original_line)
-                       set file [string range $line 9 end]
-                       set cmit $blame_data($w,commit)
-                       set abbrev [string range $cmit 0 8]
-
-                       if {[catch {set author $blame_data($w,$cmit,author)} err]} {
-                               set author {}
-                       }
-
-                       if {[catch {set atime $blame_data($w,$cmit,author-time)}]} {
-                               set atime {}
-                       } else {
-                               set atime [clock format $atime -format {%Y-%m-%d %T}]
-                       }
-
-                       while {$n > 0} {
-                               if {![catch {set g g$blame_data($w,line$lno,commit)}]} {
-                                       foreach t $all {
-                                               $t tag remove $g $lno.0 "$lno.0 lineend + 1c"
-                                       }
-                               }
-
-                               foreach t [list \
-                                       $w_commit \
-                                       $w_author \
-                                       $w_date \
-                                       $w_filename \
-                                       $w_olno] {
-                                       $t delete $lno.0 "$lno.0 lineend"
-                               }
-
-                               $w_commit insert $lno.0 $abbrev
-                               $w_author insert $lno.0 $author
-                               $w_date insert $lno.0 $atime
-                               $w_filename insert $lno.0 $file
-                               $w_olno insert $lno.0 $ol linenumber
-
-                               set g g$cmit
-                               foreach t $all {
-                                       $t tag add $g $lno.0 "$lno.0 lineend + 1c"
-                               }
-
-                               set blame_data($w,line$lno,commit) $cmit
-
-                               incr n -1
-                               incr lno
-                               incr ol
-                       }
-               } elseif {[regexp {^([a-z-]+) (.*)$} $line line header data]} {
-                       set blame_data($w,$blame_data($w,commit),$header) $data
+               if {$s ne {_}} {
+                       display_all_files_helper $ui_workdir $path \
+                               $icon_name $s
                }
        }
 
-       $w_commit conf -state disabled
-       $w_author conf -state disabled
-       $w_date conf -state disabled
-       $w_filename conf -state disabled
-       $w_olno conf -state disabled
-
-       if {[eof $fd]} {
-               close $fd
-               set blame_status($w) {Annotation complete.}
-       }
-}
-
-proc blame_highlight {w pos args} {
-       set lno [lindex [split [$w index $pos] .] 0]
-       foreach i $args {
-               $i tag remove in_sel 0.0 end
-       }
-       if {$lno eq {}} return
-       foreach i $args {
-               $i tag add in_sel $lno.0 "$lno.0 + 1 line"
-       }
-}
-
-proc blame_copycommit {w i pos} {
-       global blame_data
-       set lno [lindex [split [$i index $pos] .] 0]
-       if {![catch {set commit $blame_data($w,line$lno,commit)}]} {
-               clipboard clear
-               clipboard append \
-                       -format STRING \
-                       -type STRING \
-                       -- $commit
-       }
+       $ui_index conf -state disabled
+       $ui_workdir conf -state disabled
 }
 
 ######################################################################
@@ -3749,243 +1039,17 @@ proc scrollbar2many {list mode args} {
        foreach w $list {eval $w $mode $args}
 }
 
-proc many2scrollbar {list mode sb top bottom} {
-       $sb set $top $bottom
-       foreach w $list {$w $mode moveto $top}
-}
-
-proc incr_font_size {font {amt 1}} {
-       set sz [font configure $font -size]
-       incr sz $amt
-       font configure $font -size $sz
-       font configure ${font}bold -size $sz
-}
-
-proc hook_failed_popup {hook msg} {
-       set w .hookfail
-       toplevel $w
-
-       frame $w.m
-       label $w.m.l1 -text "$hook hook failed:" \
-               -anchor w \
-               -justify left \
-               -font font_uibold
-       text $w.m.t \
-               -background white -borderwidth 1 \
-               -relief sunken \
-               -width 80 -height 10 \
-               -font font_diff \
-               -yscrollcommand [list $w.m.sby set]
-       label $w.m.l2 \
-               -text {You must correct the above errors before committing.} \
-               -anchor w \
-               -justify left \
-               -font font_uibold
-       scrollbar $w.m.sby -command [list $w.m.t yview]
-       pack $w.m.l1 -side top -fill x
-       pack $w.m.l2 -side bottom -fill x
-       pack $w.m.sby -side right -fill y
-       pack $w.m.t -side left -fill both -expand 1
-       pack $w.m -side top -fill both -expand 1 -padx 5 -pady 10
-
-       $w.m.t insert 1.0 $msg
-       $w.m.t conf -state disabled
-
-       button $w.ok -text OK \
-               -width 15 \
-               -font font_ui \
-               -command "destroy $w"
-       pack $w.ok -side bottom -anchor e -pady 10 -padx 10
-
-       bind $w <Visibility> "grab $w; focus $w"
-       bind $w <Key-Return> "destroy $w"
-       wm title $w "[appname] ([reponame]): error"
-       tkwait window $w
-}
-
-set next_console_id 0
-
-proc new_console {short_title long_title} {
-       global next_console_id console_data
-       set w .console[incr next_console_id]
-       set console_data($w) [list $short_title $long_title]
-       return [console_init $w]
-}
-
-proc console_init {w} {
-       global console_cr console_data M1B
-
-       set console_cr($w) 1.0
-       toplevel $w
-       frame $w.m
-       label $w.m.l1 -text "[lindex $console_data($w) 1]:" \
-               -anchor w \
-               -justify left \
-               -font font_uibold
-       text $w.m.t \
-               -background white -borderwidth 1 \
-               -relief sunken \
-               -width 80 -height 10 \
-               -font font_diff \
-               -state disabled \
-               -yscrollcommand [list $w.m.sby set]
-       label $w.m.s -text {Working... please wait...} \
-               -anchor w \
-               -justify left \
-               -font font_uibold
-       scrollbar $w.m.sby -command [list $w.m.t yview]
-       pack $w.m.l1 -side top -fill x
-       pack $w.m.s -side bottom -fill x
-       pack $w.m.sby -side right -fill y
-       pack $w.m.t -side left -fill both -expand 1
-       pack $w.m -side top -fill both -expand 1 -padx 5 -pady 10
-
-       menu $w.ctxm -tearoff 0
-       $w.ctxm add command -label "Copy" \
-               -font font_ui \
-               -command "tk_textCopy $w.m.t"
-       $w.ctxm add command -label "Select All" \
-               -font font_ui \
-               -command "focus $w.m.t;$w.m.t tag add sel 0.0 end"
-       $w.ctxm add command -label "Copy All" \
-               -font font_ui \
-               -command "
-                       $w.m.t tag add sel 0.0 end
-                       tk_textCopy $w.m.t
-                       $w.m.t tag remove sel 0.0 end
-               "
-
-       button $w.ok -text {Close} \
-               -font font_ui \
-               -state disabled \
-               -command "destroy $w"
-       pack $w.ok -side bottom -anchor e -pady 10 -padx 10
-
-       bind_button3 $w.m.t "tk_popup $w.ctxm %X %Y"
-       bind $w.m.t <$M1B-Key-a> "$w.m.t tag add sel 0.0 end;break"
-       bind $w.m.t <$M1B-Key-A> "$w.m.t tag add sel 0.0 end;break"
-       bind $w <Visibility> "focus $w"
-       wm title $w "[appname] ([reponame]): [lindex $console_data($w) 0]"
-       return $w
-}
-
-proc console_exec {w cmd after} {
-       # -- Cygwin's Tcl tosses the enviroment when we exec our child.
-       #    But most users need that so we have to relogin. :-(
-       #
-       if {[is_Cygwin]} {
-               set cmd [list sh --login -c "cd \"[pwd]\" && [join $cmd { }]"]
-       }
-
-       # -- Tcl won't let us redirect both stdout and stderr to
-       #    the same pipe.  So pass it through cat...
-       #
-       set cmd [concat | $cmd |& cat]
-
-       set fd_f [open $cmd r]
-       fconfigure $fd_f -blocking 0 -translation binary
-       fileevent $fd_f readable [list console_read $w $fd_f $after]
-}
-
-proc console_read {w fd after} {
-       global console_cr
-
-       set buf [read $fd]
-       if {$buf ne {}} {
-               if {![winfo exists $w]} {console_init $w}
-               $w.m.t conf -state normal
-               set c 0
-               set n [string length $buf]
-               while {$c < $n} {
-                       set cr [string first "\r" $buf $c]
-                       set lf [string first "\n" $buf $c]
-                       if {$cr < 0} {set cr [expr {$n + 1}]}
-                       if {$lf < 0} {set lf [expr {$n + 1}]}
-
-                       if {$lf < $cr} {
-                               $w.m.t insert end [string range $buf $c $lf]
-                               set console_cr($w) [$w.m.t index {end -1c}]
-                               set c $lf
-                               incr c
-                       } else {
-                               $w.m.t delete $console_cr($w) end
-                               $w.m.t insert end "\n"
-                               $w.m.t insert end [string range $buf $c $cr]
-                               set c $cr
-                               incr c
-                       }
-               }
-               $w.m.t conf -state disabled
-               $w.m.t see end
-       }
-
-       fconfigure $fd -blocking 1
-       if {[eof $fd]} {
-               if {[catch {close $fd}]} {
-                       set ok 0
-               } else {
-                       set ok 1
-               }
-               uplevel #0 $after $w $ok
-               return
-       }
-       fconfigure $fd -blocking 0
-}
-
-proc console_chain {cmdlist w {ok 1}} {
-       if {$ok} {
-               if {[llength $cmdlist] == 0} {
-                       console_done $w $ok
-                       return
-               }
-
-               set cmd [lindex $cmdlist 0]
-               set cmdlist [lrange $cmdlist 1 end]
-
-               if {[lindex $cmd 0] eq {console_exec}} {
-                       console_exec $w \
-                               [lindex $cmd 1] \
-                               [list console_chain $cmdlist]
-               } else {
-                       uplevel #0 $cmd $cmdlist $w $ok
-               }
-       } else {
-               console_done $w $ok
-       }
-}
-
-proc console_done {args} {
-       global console_cr console_data
-
-       switch -- [llength $args] {
-       2 {
-               set w [lindex $args 0]
-               set ok [lindex $args 1]
-       }
-       3 {
-               set w [lindex $args 1]
-               set ok [lindex $args 2]
-       }
-       default {
-               error "wrong number of args: console_done ?ignored? w ok"
-       }
-       }
-
-       if {$ok} {
-               if {[winfo exists $w]} {
-                       $w.m.s conf -background green -text {Success}
-                       $w.ok conf -state normal
-               }
-       } else {
-               if {![winfo exists $w]} {
-                       console_init $w
-               }
-               $w.m.s conf -background red -text {Error: Command Failed}
-               $w.ok conf -state normal
-       }
+proc many2scrollbar {list mode sb top bottom} {
+       $sb set $top $bottom
+       foreach w $list {$w $mode moveto $top}
+}
 
-       array unset console_cr $w
-       array unset console_data $w
+proc incr_font_size {font {amt 1}} {
+       set sz [font configure $font -size]
+       incr sz $amt
+       font configure $font -size $sz
+       font configure ${font}bold -size $sz
+       font configure ${font}italic -size $sz
 }
 
 ######################################################################
@@ -3997,27 +1061,21 @@ set starting_gitk_msg {Starting gitk... please wait...}
 proc do_gitk {revs} {
        global env ui_status_value starting_gitk_msg
 
-       # -- On Windows gitk is severly broken, and right now it seems like
-       #    nobody cares about fixing it.  The only known workaround is to
-       #    always delete ~/.gitk before starting the program.
-       #
-       if {[is_Windows]} {
-               catch {file delete [file join $env(HOME) .gitk]}
-       }
-
        # -- Always start gitk through whatever we were loaded with.  This
        #    lets us bypass using shell process on Windows systems.
        #
-       set cmd [info nameofexecutable]
-       lappend cmd [gitexec gitk]
+       set cmd [list [info nameofexecutable]]
+       set exe [gitexec gitk]
+       lappend cmd $exe
        if {$revs ne {}} {
                append cmd { }
                append cmd $revs
        }
 
-       if {[catch {eval exec $cmd &} err]} {
-               error_popup "Failed to start gitk:\n\n$err"
+       if {! [file exists $exe]} {
+               error_popup "Unable to start gitk:\n\n$exe does not exist"
        } else {
+               eval exec $cmd &
                set ui_status_value $starting_gitk_msg
                after 10000 {
                        if {$ui_status_value eq $starting_gitk_msg} {
@@ -4027,94 +1085,6 @@ proc do_gitk {revs} {
        }
 }
 
-proc do_stats {} {
-       set fd [open "| git count-objects -v" r]
-       while {[gets $fd line] > 0} {
-               if {[regexp {^([^:]+): (\d+)$} $line _ name value]} {
-                       set stats($name) $value
-               }
-       }
-       close $fd
-
-       set packed_sz 0
-       foreach p [glob -directory [gitdir objects pack] \
-               -type f \
-               -nocomplain -- *] {
-               incr packed_sz [file size $p]
-       }
-       if {$packed_sz > 0} {
-               set stats(size-pack) [expr {$packed_sz / 1024}]
-       }
-
-       set w .stats_view
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text {Database Statistics} \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons -border 1
-       button $w.buttons.close -text Close \
-               -font font_ui \
-               -command [list destroy $w]
-       button $w.buttons.gc -text {Compress Database} \
-               -font font_ui \
-               -command "destroy $w;do_gc"
-       pack $w.buttons.close -side right
-       pack $w.buttons.gc -side left
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       frame $w.stat -borderwidth 1 -relief solid
-       foreach s {
-               {count           {Number of loose objects}}
-               {size            {Disk space used by loose objects} { KiB}}
-               {in-pack         {Number of packed objects}}
-               {packs           {Number of packs}}
-               {size-pack       {Disk space used by packed objects} { KiB}}
-               {prune-packable  {Packed objects waiting for pruning}}
-               {garbage         {Garbage files}}
-               } {
-               set name [lindex $s 0]
-               set label [lindex $s 1]
-               if {[catch {set value $stats($name)}]} continue
-               if {[llength $s] > 2} {
-                       set value "$value[lindex $s 2]"
-               }
-
-               label $w.stat.l_$name -text "$label:" -anchor w -font font_ui
-               label $w.stat.v_$name -text $value -anchor w -font font_ui
-               grid $w.stat.l_$name $w.stat.v_$name -sticky we -padx {0 5}
-       }
-       pack $w.stat -pady 10 -padx 10
-
-       bind $w <Visibility> "grab $w; focus $w"
-       bind $w <Key-Escape> [list destroy $w]
-       bind $w <Key-Return> [list destroy $w]
-       wm title $w "[appname] ([reponame]): Database Statistics"
-       tkwait window $w
-}
-
-proc do_gc {} {
-       set w [new_console {gc} {Compressing the object database}]
-       console_chain {
-               {console_exec {git pack-refs --prune}}
-               {console_exec {git reflog expire --all}}
-               {console_exec {git repack -a -d -l}}
-               {console_exec {git rerere gc}}
-       } $w
-}
-
-proc do_fsck_objects {} {
-       set w [new_console {fsck-objects} \
-               {Verifying the object database with fsck-objects}]
-       set cmd [list git fsck-objects]
-       lappend cmd --full
-       lappend cmd --cache
-       lappend cmd --strict
-       console_exec $w $cmd console_done
-}
-
 set is_quitting 0
 
 proc do_quit {} {
@@ -4151,7 +1121,7 @@ proc do_quit {} {
                        set rc_geometry {}
                }
                if {$cfg_geometry ne $rc_geometry} {
-                       catch {exec git repo-config gui.geometry $cfg_geometry}
+                       catch {git config gui.geometry $cfg_geometry}
                }
        }
 
@@ -4162,598 +1132,10 @@ proc do_rescan {} {
        rescan {set ui_status_value {Ready.}}
 }
 
-proc unstage_helper {txt paths} {
-       global file_states current_diff_path
-
-       if {![lock_index begin-update]} return
-
-       set pathList [list]
-       set after {}
-       foreach path $paths {
-               switch -glob -- [lindex $file_states($path) 0] {
-               A? -
-               M? -
-               D? {
-                       lappend pathList $path
-                       if {$path eq $current_diff_path} {
-                               set after {reshow_diff;}
-                       }
-               }
-               }
-       }
-       if {$pathList eq {}} {
-               unlock_index
-       } else {
-               update_indexinfo \
-                       $txt \
-                       $pathList \
-                       [concat $after {set ui_status_value {Ready.}}]
-       }
-}
-
-proc do_unstage_selection {} {
-       global current_diff_path selected_paths
-
-       if {[array size selected_paths] > 0} {
-               unstage_helper \
-                       {Unstaging selected files from commit} \
-                       [array names selected_paths]
-       } elseif {$current_diff_path ne {}} {
-               unstage_helper \
-                       "Unstaging [short_path $current_diff_path] from commit" \
-                       [list $current_diff_path]
-       }
-}
-
-proc add_helper {txt paths} {
-       global file_states current_diff_path
-
-       if {![lock_index begin-update]} return
-
-       set pathList [list]
-       set after {}
-       foreach path $paths {
-               switch -glob -- [lindex $file_states($path) 0] {
-               _O -
-               ?M -
-               ?D -
-               U? {
-                       lappend pathList $path
-                       if {$path eq $current_diff_path} {
-                               set after {reshow_diff;}
-                       }
-               }
-               }
-       }
-       if {$pathList eq {}} {
-               unlock_index
-       } else {
-               update_index \
-                       $txt \
-                       $pathList \
-                       [concat $after {set ui_status_value {Ready to commit.}}]
-       }
-}
-
-proc do_add_selection {} {
-       global current_diff_path selected_paths
-
-       if {[array size selected_paths] > 0} {
-               add_helper \
-                       {Adding selected files} \
-                       [array names selected_paths]
-       } elseif {$current_diff_path ne {}} {
-               add_helper \
-                       "Adding [short_path $current_diff_path]" \
-                       [list $current_diff_path]
-       }
-}
-
-proc do_add_all {} {
-       global file_states
-
-       set paths [list]
-       foreach path [array names file_states] {
-               switch -glob -- [lindex $file_states($path) 0] {
-               U? {continue}
-               ?M -
-               ?D {lappend paths $path}
-               }
-       }
-       add_helper {Adding all changed files} $paths
-}
-
-proc revert_helper {txt paths} {
-       global file_states current_diff_path
-
-       if {![lock_index begin-update]} return
-
-       set pathList [list]
-       set after {}
-       foreach path $paths {
-               switch -glob -- [lindex $file_states($path) 0] {
-               U? {continue}
-               ?M -
-               ?D {
-                       lappend pathList $path
-                       if {$path eq $current_diff_path} {
-                               set after {reshow_diff;}
-                       }
-               }
-               }
-       }
-
-       set n [llength $pathList]
-       if {$n == 0} {
-               unlock_index
-               return
-       } elseif {$n == 1} {
-               set s "[short_path [lindex $pathList]]"
-       } else {
-               set s "these $n files"
-       }
-
-       set reply [tk_dialog \
-               .confirm_revert \
-               "[appname] ([reponame])" \
-               "Revert changes in $s?
-
-Any unadded changes will be permanently lost by the revert." \
-               question \
-               1 \
-               {Do Nothing} \
-               {Revert Changes} \
-               ]
-       if {$reply == 1} {
-               checkout_index \
-                       $txt \
-                       $pathList \
-                       [concat $after {set ui_status_value {Ready.}}]
-       } else {
-               unlock_index
-       }
-}
-
-proc do_revert_selection {} {
-       global current_diff_path selected_paths
-
-       if {[array size selected_paths] > 0} {
-               revert_helper \
-                       {Reverting selected files} \
-                       [array names selected_paths]
-       } elseif {$current_diff_path ne {}} {
-               revert_helper \
-                       "Reverting [short_path $current_diff_path]" \
-                       [list $current_diff_path]
-       }
-}
-
-proc do_signoff {} {
-       global ui_comm
-
-       set me [committer_ident]
-       if {$me eq {}} return
-
-       set sob "Signed-off-by: $me"
-       set last [$ui_comm get {end -1c linestart} {end -1c}]
-       if {$last ne $sob} {
-               $ui_comm edit separator
-               if {$last ne {}
-                       && ![regexp {^[A-Z][A-Za-z]*-[A-Za-z-]+: *} $last]} {
-                       $ui_comm insert end "\n"
-               }
-               $ui_comm insert end "\n$sob"
-               $ui_comm edit separator
-               $ui_comm see end
-       }
-}
-
-proc do_select_commit_type {} {
-       global commit_type selected_commit_type
-
-       if {$selected_commit_type eq {new}
-               && [string match amend* $commit_type]} {
-               create_new_commit
-       } elseif {$selected_commit_type eq {amend}
-               && ![string match amend* $commit_type]} {
-               load_last_commit
-
-               # The amend request was rejected...
-               #
-               if {![string match amend* $commit_type]} {
-                       set selected_commit_type new
-               }
-       }
-}
-
 proc do_commit {} {
        commit_tree
 }
 
-proc do_about {} {
-       global appvers copyright
-       global tcl_patchLevel tk_patchLevel
-
-       set w .about_dialog
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text "About [appname]" \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.close -text {Close} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.close -side right
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       label $w.desc \
-               -text "[appname] - a commit creation tool for Git.
-$copyright" \
-               -padx 5 -pady 5 \
-               -justify left \
-               -anchor w \
-               -borderwidth 1 \
-               -relief solid \
-               -font font_ui
-       pack $w.desc -side top -fill x -padx 5 -pady 5
-
-       set v {}
-       append v "[appname] version $appvers\n"
-       append v "[exec git version]\n"
-       append v "\n"
-       if {$tcl_patchLevel eq $tk_patchLevel} {
-               append v "Tcl/Tk version $tcl_patchLevel"
-       } else {
-               append v "Tcl version $tcl_patchLevel"
-               append v ", Tk version $tk_patchLevel"
-       }
-
-       label $w.vers \
-               -text $v \
-               -padx 5 -pady 5 \
-               -justify left \
-               -anchor w \
-               -borderwidth 1 \
-               -relief solid \
-               -font font_ui
-       pack $w.vers -side top -fill x -padx 5 -pady 5
-
-       menu $w.ctxm -tearoff 0
-       $w.ctxm add command \
-               -label {Copy} \
-               -font font_ui \
-               -command "
-               clipboard clear
-               clipboard append -format STRING -type STRING -- \[$w.vers cget -text\]
-       "
-
-       bind $w <Visibility> "grab $w; focus $w"
-       bind $w <Key-Escape> "destroy $w"
-       bind_button3 $w.vers "tk_popup $w.ctxm %X %Y; grab $w; focus $w"
-       wm title $w "About [appname]"
-       tkwait window $w
-}
-
-proc do_options {} {
-       global repo_config global_config font_descs
-       global repo_config_new global_config_new
-
-       array unset repo_config_new
-       array unset global_config_new
-       foreach name [array names repo_config] {
-               set repo_config_new($name) $repo_config($name)
-       }
-       load_config 1
-       foreach name [array names repo_config] {
-               switch -- $name {
-               gui.diffcontext {continue}
-               }
-               set repo_config_new($name) $repo_config($name)
-       }
-       foreach name [array names global_config] {
-               set global_config_new($name) $global_config($name)
-       }
-
-       set w .options_editor
-       toplevel $w
-       wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
-
-       label $w.header -text "[appname] Options" \
-               -font font_uibold
-       pack $w.header -side top -fill x
-
-       frame $w.buttons
-       button $w.buttons.restore -text {Restore Defaults} \
-               -font font_ui \
-               -command do_restore_defaults
-       pack $w.buttons.restore -side left
-       button $w.buttons.save -text Save \
-               -font font_ui \
-               -command [list do_save_config $w]
-       pack $w.buttons.save -side right
-       button $w.buttons.cancel -text {Cancel} \
-               -font font_ui \
-               -command [list destroy $w]
-       pack $w.buttons.cancel -side right -padx 5
-       pack $w.buttons -side bottom -fill x -pady 10 -padx 10
-
-       labelframe $w.repo -text "[reponame] Repository" \
-               -font font_ui
-       labelframe $w.global -text {Global (All Repositories)} \
-               -font font_ui
-       pack $w.repo -side left -fill both -expand 1 -pady 5 -padx 5
-       pack $w.global -side right -fill both -expand 1 -pady 5 -padx 5
-
-       set optid 0
-       foreach option {
-               {t user.name {User Name}}
-               {t user.email {Email Address}}
-
-               {b merge.summary {Summarize Merge Commits}}
-               {i-1..5 merge.verbosity {Merge Verbosity}}
-
-               {b gui.trustmtime  {Trust File Modification Timestamps}}
-               {i-1..99 gui.diffcontext {Number of Diff Context Lines}}
-               {t gui.newbranchtemplate {New Branch Name Template}}
-               } {
-               set type [lindex $option 0]
-               set name [lindex $option 1]
-               set text [lindex $option 2]
-               incr optid
-               foreach f {repo global} {
-                       switch -glob -- $type {
-                       b {
-                               checkbutton $w.$f.$optid -text $text \
-                                       -variable ${f}_config_new($name) \
-                                       -onvalue true \
-                                       -offvalue false \
-                                       -font font_ui
-                               pack $w.$f.$optid -side top -anchor w
-                       }
-                       i-* {
-                               regexp -- {-(\d+)\.\.(\d+)$} $type _junk min max
-                               frame $w.$f.$optid
-                               label $w.$f.$optid.l -text "$text:" -font font_ui
-                               pack $w.$f.$optid.l -side left -anchor w -fill x
-                               spinbox $w.$f.$optid.v \
-                                       -textvariable ${f}_config_new($name) \
-                                       -from $min \
-                                       -to $max \
-                                       -increment 1 \
-                                       -width [expr {1 + [string length $max]}] \
-                                       -font font_ui
-                               bind $w.$f.$optid.v <FocusIn> {%W selection range 0 end}
-                               pack $w.$f.$optid.v -side right -anchor e -padx 5
-                               pack $w.$f.$optid -side top -anchor w -fill x
-                       }
-                       t {
-                               frame $w.$f.$optid
-                               label $w.$f.$optid.l -text "$text:" -font font_ui
-                               entry $w.$f.$optid.v \
-                                       -borderwidth 1 \
-                                       -relief sunken \
-                                       -width 20 \
-                                       -textvariable ${f}_config_new($name) \
-                                       -font font_ui
-                               pack $w.$f.$optid.l -side left -anchor w
-                               pack $w.$f.$optid.v -side left -anchor w \
-                                       -fill x -expand 1 \
-                                       -padx 5
-                               pack $w.$f.$optid -side top -anchor w -fill x
-                       }
-                       }
-               }
-       }
-
-       set all_fonts [lsort [font families]]
-       foreach option $font_descs {
-               set name [lindex $option 0]
-               set font [lindex $option 1]
-               set text [lindex $option 2]
-
-               set global_config_new(gui.$font^^family) \
-                       [font configure $font -family]
-               set global_config_new(gui.$font^^size) \
-                       [font configure $font -size]
-
-               frame $w.global.$name
-               label $w.global.$name.l -text "$text:" -font font_ui
-               pack $w.global.$name.l -side left -anchor w -fill x
-               eval tk_optionMenu $w.global.$name.family \
-                       global_config_new(gui.$font^^family) \
-                       $all_fonts
-               spinbox $w.global.$name.size \
-                       -textvariable global_config_new(gui.$font^^size) \
-                       -from 2 -to 80 -increment 1 \
-                       -width 3 \
-                       -font font_ui
-               bind $w.global.$name.size <FocusIn> {%W selection range 0 end}
-               pack $w.global.$name.size -side right -anchor e
-               pack $w.global.$name.family -side right -anchor e
-               pack $w.global.$name -side top -anchor w -fill x
-       }
-
-       bind $w <Visibility> "grab $w; focus $w"
-       bind $w <Key-Escape> "destroy $w"
-       wm title $w "[appname] ([reponame]): Options"
-       tkwait window $w
-}
-
-proc do_restore_defaults {} {
-       global font_descs default_config repo_config
-       global repo_config_new global_config_new
-
-       foreach name [array names default_config] {
-               set repo_config_new($name) $default_config($name)
-               set global_config_new($name) $default_config($name)
-       }
-
-       foreach option $font_descs {
-               set name [lindex $option 0]
-               set repo_config(gui.$name) $default_config(gui.$name)
-       }
-       apply_config
-
-       foreach option $font_descs {
-               set name [lindex $option 0]
-               set font [lindex $option 1]
-               set global_config_new(gui.$font^^family) \
-                       [font configure $font -family]
-               set global_config_new(gui.$font^^size) \
-                       [font configure $font -size]
-       }
-}
-
-proc do_save_config {w} {
-       if {[catch {save_config} err]} {
-               error_popup "Failed to completely save options:\n\n$err"
-       }
-       reshow_diff
-       destroy $w
-}
-
-proc do_windows_shortcut {} {
-       global argv0
-
-       set fn [tk_getSaveFile \
-               -parent . \
-               -title "[appname] ([reponame]): Create Desktop Icon" \
-               -initialfile "Git [reponame].bat"]
-       if {$fn != {}} {
-               if {[catch {
-                               set fd [open $fn w]
-                               puts $fd "@ECHO Entering [reponame]"
-                               puts $fd "@ECHO Starting git-gui... please wait..."
-                               puts $fd "@SET PATH=[file normalize [gitexec]];%PATH%"
-                               puts $fd "@SET GIT_DIR=[file normalize [gitdir]]"
-                               puts -nonewline $fd "@\"[info nameofexecutable]\""
-                               puts $fd " \"[file normalize $argv0]\""
-                               close $fd
-                       } err]} {
-                       error_popup "Cannot write script:\n\n$err"
-               }
-       }
-}
-
-proc do_cygwin_shortcut {} {
-       global argv0
-
-       if {[catch {
-               set desktop [exec cygpath \
-                       --windows \
-                       --absolute \
-                       --long-name \
-                       --desktop]
-               }]} {
-                       set desktop .
-       }
-       set fn [tk_getSaveFile \
-               -parent . \
-               -title "[appname] ([reponame]): Create Desktop Icon" \
-               -initialdir $desktop \
-               -initialfile "Git [reponame].bat"]
-       if {$fn != {}} {
-               if {[catch {
-                               set fd [open $fn w]
-                               set sh [exec cygpath \
-                                       --windows \
-                                       --absolute \
-                                       /bin/sh]
-                               set me [exec cygpath \
-                                       --unix \
-                                       --absolute \
-                                       $argv0]
-                               set gd [exec cygpath \
-                                       --unix \
-                                       --absolute \
-                                       [gitdir]]
-                               set gw [exec cygpath \
-                                       --windows \
-                                       --absolute \
-                                       [file dirname [gitdir]]]
-                               regsub -all ' $me "'\\''" me
-                               regsub -all ' $gd "'\\''" gd
-                               puts $fd "@ECHO Entering $gw"
-                               puts $fd "@ECHO Starting git-gui... please wait..."
-                               puts -nonewline $fd "@\"$sh\" --login -c \""
-                               puts -nonewline $fd "GIT_DIR='$gd'"
-                               puts -nonewline $fd " '$me'"
-                               puts $fd "&\""
-                               close $fd
-                       } err]} {
-                       error_popup "Cannot write script:\n\n$err"
-               }
-       }
-}
-
-proc do_macosx_app {} {
-       global argv0 env
-
-       set fn [tk_getSaveFile \
-               -parent . \
-               -title "[appname] ([reponame]): Create Desktop Icon" \
-               -initialdir [file join $env(HOME) Desktop] \
-               -initialfile "Git [reponame].app"]
-       if {$fn != {}} {
-               if {[catch {
-                               set Contents [file join $fn Contents]
-                               set MacOS [file join $Contents MacOS]
-                               set exe [file join $MacOS git-gui]
-
-                               file mkdir $MacOS
-
-                               set fd [open [file join $Contents Info.plist] w]
-                               puts $fd {<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-       <key>CFBundleDevelopmentRegion</key>
-       <string>English</string>
-       <key>CFBundleExecutable</key>
-       <string>git-gui</string>
-       <key>CFBundleIdentifier</key>
-       <string>org.spearce.git-gui</string>
-       <key>CFBundleInfoDictionaryVersion</key>
-       <string>6.0</string>
-       <key>CFBundlePackageType</key>
-       <string>APPL</string>
-       <key>CFBundleSignature</key>
-       <string>????</string>
-       <key>CFBundleVersion</key>
-       <string>1.0</string>
-       <key>NSPrincipalClass</key>
-       <string>NSApplication</string>
-</dict>
-</plist>}
-                               close $fd
-
-                               set fd [open $exe w]
-                               set gd [file normalize [gitdir]]
-                               set ep [file normalize [gitexec]]
-                               regsub -all ' $gd "'\\''" gd
-                               regsub -all ' $ep "'\\''" ep
-                               puts $fd "#!/bin/sh"
-                               foreach name [array names env] {
-                                       if {[string match GIT_* $name]} {
-                                               regsub -all ' $env($name) "'\\''" v
-                                               puts $fd "export $name='$v'"
-                                       }
-                               }
-                               puts $fd "export PATH='$ep':\$PATH"
-                               puts $fd "export GIT_DIR='$gd'"
-                               puts $fd "exec [file normalize $argv0]"
-                               close $fd
-
-                               file attributes $exe -permissions u+x,g+x,o+x
-                       } err]} {
-                       error_popup "Cannot write icon:\n\n$err"
-               }
-       }
-}
-
 proc toggle_or_diff {w x y} {
        global file_states file_lists current_diff_path ui_index ui_workdir
        global last_clicked selected_paths
@@ -4862,18 +1244,28 @@ catch {
        destroy .dummy
 }
 
+font create font_uiitalic
 font create font_uibold
 font create font_diffbold
+font create font_diffitalic
 
-if {[is_Windows]} {
-       set M1B Control
-       set M1T Ctrl
-} elseif {[is_MacOSX]} {
+foreach class {Button Checkbutton Entry Label
+               Labelframe Listbox Menu Message
+               Radiobutton Spinbox Text} {
+       option add *$class.font font_ui
+}
+unset class
+
+if {[is_Windows] || [is_MacOSX]} {
+       option add *Menu.tearOff 0
+}
+
+if {[is_MacOSX]} {
        set M1B M1
        set M1T Cmd
 } else {
-       set M1B M1
-       set M1T M1
+       set M1B Control
+       set M1T Ctrl
 }
 
 proc apply_config {} {
@@ -4891,16 +1283,20 @@ proc apply_config {} {
                }
                foreach {cn cv} [font configure $font] {
                        font configure ${font}bold $cn $cv
+                       font configure ${font}italic $cn $cv
                }
                font configure ${font}bold -weight bold
+               font configure ${font}italic -slant italic
        }
 }
 
+set default_config(merge.diffstat) true
 set default_config(merge.summary) false
 set default_config(merge.verbosity) 2
 set default_config(user.name) {}
 set default_config(user.email) {}
 
+set default_config(gui.pruneduringfetch) false
 set default_config(gui.trustmtime) false
 set default_config(gui.diffcontext) 5
 set default_config(gui.newbranchtemplate) {}
@@ -4935,6 +1331,7 @@ enable_option branch
 enable_option transport
 
 switch -- $subcommand {
+browser -
 blame {
        disable_option multicommit
        disable_option branch
@@ -4979,93 +1376,76 @@ menu .mbar.repository
 
 .mbar.repository add command \
        -label {Browse Current Branch} \
-       -command {new_browser $current_branch} \
-       -font font_ui
+       -command {browser::new $current_branch}
 trace add variable current_branch write ".mbar.repository entryconf [.mbar.repository index last] -label \"Browse \$current_branch\" ;#"
 .mbar.repository add separator
 
 .mbar.repository add command \
        -label {Visualize Current Branch} \
-       -command {do_gitk $current_branch} \
-       -font font_ui
+       -command {do_gitk $current_branch}
 trace add variable current_branch write ".mbar.repository entryconf [.mbar.repository index last] -label \"Visualize \$current_branch\" ;#"
 .mbar.repository add command \
        -label {Visualize All Branches} \
-       -command {do_gitk --all} \
-       -font font_ui
+       -command {do_gitk --all}
 .mbar.repository add separator
 
 if {[is_enabled multicommit]} {
        .mbar.repository add command -label {Database Statistics} \
-               -command do_stats \
-               -font font_ui
+               -command do_stats
 
        .mbar.repository add command -label {Compress Database} \
-               -command do_gc \
-               -font font_ui
+               -command do_gc
 
        .mbar.repository add command -label {Verify Database} \
-               -command do_fsck_objects \
-               -font font_ui
+               -command do_fsck_objects
 
        .mbar.repository add separator
 
        if {[is_Cygwin]} {
                .mbar.repository add command \
                        -label {Create Desktop Icon} \
-                       -command do_cygwin_shortcut \
-                       -font font_ui
+                       -command do_cygwin_shortcut
        } elseif {[is_Windows]} {
                .mbar.repository add command \
                        -label {Create Desktop Icon} \
-                       -command do_windows_shortcut \
-                       -font font_ui
+                       -command do_windows_shortcut
        } elseif {[is_MacOSX]} {
                .mbar.repository add command \
                        -label {Create Desktop Icon} \
-                       -command do_macosx_app \
-                       -font font_ui
+                       -command do_macosx_app
        }
 }
 
 .mbar.repository add command -label Quit \
        -command do_quit \
-       -accelerator $M1T-Q \
-       -font font_ui
+       -accelerator $M1T-Q
 
 # -- Edit Menu
 #
 menu .mbar.edit
 .mbar.edit add command -label Undo \
        -command {catch {[focus] edit undo}} \
-       -accelerator $M1T-Z \
-       -font font_ui
+       -accelerator $M1T-Z
 .mbar.edit add command -label Redo \
        -command {catch {[focus] edit redo}} \
-       -accelerator $M1T-Y \
-       -font font_ui
+       -accelerator $M1T-Y
 .mbar.edit add separator
 .mbar.edit add command -label Cut \
        -command {catch {tk_textCut [focus]}} \
-       -accelerator $M1T-X \
-       -font font_ui
+       -accelerator $M1T-X
 .mbar.edit add command -label Copy \
        -command {catch {tk_textCopy [focus]}} \
-       -accelerator $M1T-C \
-       -font font_ui
+       -accelerator $M1T-C
 .mbar.edit add command -label Paste \
        -command {catch {tk_textPaste [focus]; [focus] see insert}} \
-       -accelerator $M1T-V \
-       -font font_ui
+       -accelerator $M1T-V
 .mbar.edit add command -label Delete \
        -command {catch {[focus] delete sel.first sel.last}} \
-       -accelerator Del \
-       -font font_ui
+       -accelerator Del
 .mbar.edit add separator
 .mbar.edit add command -label {Select All} \
        -command {catch {[focus] tag add sel 0.0 end}} \
-       -accelerator $M1T-A \
-       -font font_ui
+       -accelerator $M1T-A
 
 # -- Branch Menu
 #
@@ -5074,14 +1454,22 @@ if {[is_enabled branch]} {
 
        .mbar.branch add command -label {Create...} \
                -command do_create_branch \
-               -accelerator $M1T-N \
-               -font font_ui
+               -accelerator $M1T-N
+       lappend disable_on_lock [list .mbar.branch entryconf \
+               [.mbar.branch index last] -state]
+
+       .mbar.branch add command -label {Rename...} \
+               -command branch_rename::dialog
        lappend disable_on_lock [list .mbar.branch entryconf \
                [.mbar.branch index last] -state]
 
        .mbar.branch add command -label {Delete...} \
-               -command do_delete_branch \
-               -font font_ui
+               -command do_delete_branch
+       lappend disable_on_lock [list .mbar.branch entryconf \
+               [.mbar.branch index last] -state]
+
+       .mbar.branch add command -label {Reset...} \
+               -command merge::reset_hard
        lappend disable_on_lock [list .mbar.branch entryconf \
                [.mbar.branch index last] -state]
 }
@@ -5095,8 +1483,7 @@ if {[is_enabled multicommit] || [is_enabled singlecommit]} {
                -label {New Commit} \
                -command do_select_commit_type \
                -variable selected_commit_type \
-               -value new \
-               -font font_ui
+               -value new
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
@@ -5104,8 +1491,7 @@ if {[is_enabled multicommit] || [is_enabled singlecommit]} {
                -label {Amend Last Commit} \
                -command do_select_commit_type \
                -variable selected_commit_type \
-               -value amend \
-               -font font_ui
+               -value amend
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
@@ -5113,33 +1499,28 @@ if {[is_enabled multicommit] || [is_enabled singlecommit]} {
 
        .mbar.commit add command -label Rescan \
                -command do_rescan \
-               -accelerator F5 \
-               -font font_ui
+               -accelerator F5
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
        .mbar.commit add command -label {Add To Commit} \
-               -command do_add_selection \
-               -font font_ui
+               -command do_add_selection
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
        .mbar.commit add command -label {Add Existing To Commit} \
                -command do_add_all \
-               -accelerator $M1T-I \
-               -font font_ui
+               -accelerator $M1T-I
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
        .mbar.commit add command -label {Unstage From Commit} \
-               -command do_unstage_selection \
-               -font font_ui
+               -command do_unstage_selection
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
        .mbar.commit add command -label {Revert Changes} \
-               -command do_revert_selection \
-               -font font_ui
+               -command do_revert_selection
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
@@ -5147,17 +1528,42 @@ if {[is_enabled multicommit] || [is_enabled singlecommit]} {
 
        .mbar.commit add command -label {Sign Off} \
                -command do_signoff \
-               -accelerator $M1T-S \
-               -font font_ui
+               -accelerator $M1T-S
 
        .mbar.commit add command -label Commit \
                -command do_commit \
-               -accelerator $M1T-Return \
-               -font font_ui
+               -accelerator $M1T-Return
        lappend disable_on_lock \
                [list .mbar.commit entryconf [.mbar.commit index last] -state]
 }
 
+# -- Merge Menu
+#
+if {[is_enabled branch]} {
+       menu .mbar.merge
+       .mbar.merge add command -label {Local Merge...} \
+               -command merge::dialog
+       lappend disable_on_lock \
+               [list .mbar.merge entryconf [.mbar.merge index last] -state]
+       .mbar.merge add command -label {Abort Merge...} \
+               -command merge::reset_hard
+       lappend disable_on_lock \
+               [list .mbar.merge entryconf [.mbar.merge index last] -state]
+
+}
+
+# -- Transport Menu
+#
+if {[is_enabled transport]} {
+       menu .mbar.fetch
+
+       menu .mbar.push
+       .mbar.push add command -label {Push...} \
+               -command do_push_anywhere
+       .mbar.push add command -label {Delete...} \
+               -command remote_branch_delete::dialog
+}
+
 if {[is_MacOSX]} {
        # -- Apple Menu (Mac OS X only)
        #
@@ -5165,23 +1571,19 @@ if {[is_MacOSX]} {
        menu .mbar.apple
 
        .mbar.apple add command -label "About [appname]" \
-               -command do_about \
-               -font font_ui
-       .mbar.apple add command -label "[appname] Options..." \
-               -command do_options \
-               -font font_ui
+               -command do_about
+       .mbar.apple add command -label "Options..." \
+               -command do_options
 } else {
        # -- Edit Menu
        #
        .mbar.edit add separator
        .mbar.edit add command -label {Options...} \
-               -command do_options \
-               -font font_ui
+               -command do_options
 
        # -- Tools Menu
        #
-       if {[file exists /usr/local/miga/lib/gui-miga]
-               && [file exists .pvcsrc]} {
+       if {[is_Cygwin] && [file exists /usr/local/miga/lib/gui-miga]} {
        proc do_miga {} {
                global ui_status_value
                if {![lock_index update]} return
@@ -5202,8 +1604,7 @@ if {[is_MacOSX]} {
        .mbar add cascade -label Tools -menu .mbar.tools
        menu .mbar.tools
        .mbar.tools add command -label "Migrate" \
-               -command do_miga \
-               -font font_ui
+               -command do_miga
        lappend disable_on_lock \
                [list .mbar.tools entryconf [.mbar.tools index last] -state]
        }
@@ -5216,8 +1617,7 @@ menu .mbar.help
 
 if {![is_MacOSX]} {
        .mbar.help add command -label "About [appname]" \
-               -command do_about \
-               -font font_ui
+               -command do_about
 }
 
 set browser {}
@@ -5226,7 +1626,7 @@ set doc_path [file dirname [gitexec]]
 set doc_path [file join $doc_path Documentation index.html]
 
 if {[is_Cygwin]} {
-       set doc_path [exec cygpath --windows $doc_path]
+       set doc_path [exec cygpath --mixed $doc_path]
 }
 
 if {$browser eq {}} {
@@ -5254,29 +1654,71 @@ if {[file isfile $doc_path]} {
 
 if {$browser ne {}} {
        .mbar.help add command -label {Online Documentation} \
-               -command [list exec $browser $doc_url &] \
-               -font font_ui
+               -command [list exec $browser $doc_url &]
 }
 unset browser doc_path doc_url
 
 # -- Standard bindings
 #
-bind .   <Destroy> do_quit
+wm protocol . WM_DELETE_WINDOW do_quit
 bind all <$M1B-Key-q> do_quit
 bind all <$M1B-Key-Q> do_quit
 bind all <$M1B-Key-w> {destroy [winfo toplevel %W]}
 bind all <$M1B-Key-W> {destroy [winfo toplevel %W]}
 
+set subcommand_args {}
+proc usage {} {
+       puts stderr "usage: $::argv0 $::subcommand $::subcommand_args"
+       exit 1
+}
+
 # -- Not a normal commit type invocation?  Do that instead!
 #
 switch -- $subcommand {
+browser {
+       set subcommand_args {rev?}
+       switch [llength $argv] {
+       0 { set current_branch [current-branch] }
+       1 { set current_branch [lindex $argv 0] }
+       default usage
+       }
+       browser::new $current_branch
+       return
+}
 blame {
-       if {[llength $argv] != 2} {
-               puts stderr "usage: $argv0 blame commit path"
-               exit 1
+       set subcommand_args {rev? path?}
+       set head {}
+       set path {}
+       set is_path 0
+       foreach a $argv {
+               if {$is_path || [file exists $_prefix$a]} {
+                       if {$path ne {}} usage
+                       set path $_prefix$a
+                       break
+               } elseif {$a eq {--}} {
+                       if {$path ne {}} {
+                               if {$head ne {}} usage
+                               set head $path
+                               set path {}
+                       }
+                       set is_path 1
+               } elseif {$head eq {}} {
+                       if {$head ne {}} usage
+                       set head $a
+               } else {
+                       usage
+               }
+       }
+       unset is_path
+
+       if {$head eq {}} {
+               set current_branch [current-branch]
+       } else {
+               set current_branch $head
        }
-       set current_branch [lindex $argv 0]
-       show_blame $current_branch [lindex $argv 1]
+
+       if {$path eq {}} usage
+       blame::new $head $path
        return
 }
 citool -
@@ -5292,7 +1734,7 @@ gui {
        # fall through to setup UI for commits
 }
 default {
-       puts stderr "usage: $argv0 \[{blame|citool}\]"
+       puts stderr "usage: $argv0 \[{blame|browser|citool}\]"
        exit 1
 }
 }
@@ -5305,39 +1747,15 @@ frame .branch \
 label .branch.l1 \
        -text {Current Branch:} \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 label .branch.cb \
        -textvariable current_branch \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 pack .branch.l1 -side left
 pack .branch.cb -side left -fill x
 pack .branch -side top -fill x
 
-if {[is_enabled branch]} {
-       menu .mbar.merge
-       .mbar.merge add command -label {Local Merge...} \
-               -command do_local_merge \
-               -font font_ui
-       lappend disable_on_lock \
-               [list .mbar.merge entryconf [.mbar.merge index last] -state]
-       .mbar.merge add command -label {Abort Merge...} \
-               -command do_reset_hard \
-               -font font_ui
-       lappend disable_on_lock \
-               [list .mbar.merge entryconf [.mbar.merge index last] -state]
-
-
-       menu .mbar.fetch
-
-       menu .mbar.push
-       .mbar.push add command -label {Push...} \
-               -command do_push_anywhere \
-               -font font_ui
-}
-
 # -- Main Window Layout
 #
 panedwindow .vpane -orient vertical
@@ -5348,13 +1766,11 @@ pack .vpane -anchor n -side top -fill both -expand 1
 # -- Index File List
 #
 frame .vpane.files.index -height 100 -width 200
-label .vpane.files.index.title -text {Changes To Be Committed} \
-       -background green \
-       -font font_ui
+label .vpane.files.index.title -text {Staged Changes (Will Be Committed)} \
+       -background lightgreen
 text $ui_index -background white -borderwidth 0 \
        -width 20 -height 10 \
        -wrap none \
-       -font font_ui \
        -cursor $cursor_ptr \
        -xscrollcommand {.vpane.files.index.sx set} \
        -yscrollcommand {.vpane.files.index.sy set} \
@@ -5370,13 +1786,11 @@ pack $ui_index -side left -fill both -expand 1
 # -- Working Directory File List
 #
 frame .vpane.files.workdir -height 100 -width 200
-label .vpane.files.workdir.title -text {Changed But Not Updated} \
-       -background red \
-       -font font_ui
+label .vpane.files.workdir.title -text {Unstaged Changes (Will Not Be Committed)} \
+       -background lightsalmon
 text $ui_workdir -background white -borderwidth 0 \
        -width 20 -height 10 \
        -wrap none \
-       -font font_ui \
        -cursor $cursor_ptr \
        -xscrollcommand {.vpane.files.workdir.sx set} \
        -yscrollcommand {.vpane.files.workdir.sy set} \
@@ -5390,10 +1804,8 @@ pack $ui_workdir -side left -fill both -expand 1
 .vpane.files add .vpane.files.workdir -sticky nsew
 
 foreach i [list $ui_index $ui_workdir] {
-       $i tag conf in_diff -font font_uibold
-       $i tag conf in_sel \
-               -background [$i cget -foreground] \
-               -foreground [$i cget -background]
+       $i tag conf in_diff -background lightgray
+       $i tag conf in_sel  -background lightgray
 }
 unset i
 
@@ -5411,33 +1823,28 @@ pack .vpane.lower.diff -side bottom -fill both -expand 1
 frame .vpane.lower.commarea.buttons
 label .vpane.lower.commarea.buttons.l -text {} \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 pack .vpane.lower.commarea.buttons.l -side top -fill x
 pack .vpane.lower.commarea.buttons -side left -fill y
 
 button .vpane.lower.commarea.buttons.rescan -text {Rescan} \
-       -command do_rescan \
-       -font font_ui
+       -command do_rescan
 pack .vpane.lower.commarea.buttons.rescan -side top -fill x
 lappend disable_on_lock \
        {.vpane.lower.commarea.buttons.rescan conf -state}
 
 button .vpane.lower.commarea.buttons.incall -text {Add Existing} \
-       -command do_add_all \
-       -font font_ui
+       -command do_add_all
 pack .vpane.lower.commarea.buttons.incall -side top -fill x
 lappend disable_on_lock \
        {.vpane.lower.commarea.buttons.incall conf -state}
 
 button .vpane.lower.commarea.buttons.signoff -text {Sign Off} \
-       -command do_signoff \
-       -font font_ui
+       -command do_signoff
 pack .vpane.lower.commarea.buttons.signoff -side top -fill x
 
 button .vpane.lower.commarea.buttons.commit -text {Commit} \
-       -command do_commit \
-       -font font_ui
+       -command do_commit
 pack .vpane.lower.commarea.buttons.commit -side top -fill x
 lappend disable_on_lock \
        {.vpane.lower.commarea.buttons.commit conf -state}
@@ -5452,22 +1859,19 @@ radiobutton .vpane.lower.commarea.buffer.header.new \
        -text {New Commit} \
        -command do_select_commit_type \
        -variable selected_commit_type \
-       -value new \
-       -font font_ui
+       -value new
 lappend disable_on_lock \
        [list .vpane.lower.commarea.buffer.header.new conf -state]
 radiobutton .vpane.lower.commarea.buffer.header.amend \
        -text {Amend Last Commit} \
        -command do_select_commit_type \
        -variable selected_commit_type \
-       -value amend \
-       -font font_ui
+       -value amend
 lappend disable_on_lock \
        [list .vpane.lower.commarea.buffer.header.amend conf -state]
 label $ui_coml \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 proc trace_commit_type {varname args} {
        global ui_coml commit_type
        switch -glob -- $commit_type {
@@ -5506,28 +1910,22 @@ set ctxm .vpane.lower.commarea.buffer.ctxm
 menu $ctxm -tearoff 0
 $ctxm add command \
        -label {Cut} \
-       -font font_ui \
        -command {tk_textCut $ui_comm}
 $ctxm add command \
        -label {Copy} \
-       -font font_ui \
        -command {tk_textCopy $ui_comm}
 $ctxm add command \
        -label {Paste} \
-       -font font_ui \
        -command {tk_textPaste $ui_comm}
 $ctxm add command \
        -label {Delete} \
-       -font font_ui \
        -command {$ui_comm delete sel.first sel.last}
 $ctxm add separator
 $ctxm add command \
        -label {Select All} \
-       -font font_ui \
        -command {focus $ui_comm;$ui_comm tag add sel 0.0 end}
 $ctxm add command \
        -label {Copy All} \
-       -font font_ui \
        -command {
                $ui_comm tag add sel 0.0 end
                tk_textCopy $ui_comm
@@ -5536,15 +1934,11 @@ $ctxm add command \
 $ctxm add separator
 $ctxm add command \
        -label {Sign Off} \
-       -font font_ui \
        -command do_signoff
 bind_button3 $ui_comm "tk_popup $ctxm %X %Y"
 
 # -- Diff Header
 #
-set current_diff_path {}
-set current_diff_side {}
-set diff_actions [list]
 proc trace_current_diff_path {varname args} {
        global current_diff_path diff_actions file_states
        if {$current_diff_path eq {}} {
@@ -5569,23 +1963,20 @@ proc trace_current_diff_path {varname args} {
 }
 trace add variable current_diff_path write trace_current_diff_path
 
-frame .vpane.lower.diff.header -background orange
+frame .vpane.lower.diff.header -background gold
 label .vpane.lower.diff.header.status \
-       -background orange \
+       -background gold \
        -width $max_status_desc \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 label .vpane.lower.diff.header.file \
-       -background orange \
+       -background gold \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 label .vpane.lower.diff.header.path \
-       -background orange \
+       -background gold \
        -anchor w \
-       -justify left \
-       -font font_ui
+       -justify left
 pack .vpane.lower.diff.header.status -side left
 pack .vpane.lower.diff.header.file -side left
 pack .vpane.lower.diff.header.path -fill x
@@ -5593,7 +1984,6 @@ set ctxm .vpane.lower.diff.header.ctxm
 menu $ctxm -tearoff 0
 $ctxm add command \
        -label {Copy} \
-       -font font_ui \
        -command {
                clipboard clear
                clipboard append \
@@ -5662,22 +2052,18 @@ set ctxm .vpane.lower.diff.body.ctxm
 menu $ctxm -tearoff 0
 $ctxm add command \
        -label {Refresh} \
-       -font font_ui \
        -command reshow_diff
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Copy} \
-       -font font_ui \
        -command {tk_textCopy $ui_diff}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Select All} \
-       -font font_ui \
        -command {focus $ui_diff;$ui_diff tag add sel 0.0 end}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Copy All} \
-       -font font_ui \
        -command {
                $ui_diff tag add sel 0.0 end
                tk_textCopy $ui_diff
@@ -5687,41 +2073,35 @@ lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add separator
 $ctxm add command \
        -label {Apply/Reverse Hunk} \
-       -font font_ui \
        -command {apply_hunk $cursorX $cursorY}
 set ui_diff_applyhunk [$ctxm index last]
 lappend diff_actions [list $ctxm entryconf $ui_diff_applyhunk -state]
 $ctxm add separator
 $ctxm add command \
        -label {Decrease Font Size} \
-       -font font_ui \
        -command {incr_font_size font_diff -1}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Increase Font Size} \
-       -font font_ui \
        -command {incr_font_size font_diff 1}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add separator
 $ctxm add command \
        -label {Show Less Context} \
-       -font font_ui \
-       -command {if {$repo_config(gui.diffcontext) >= 2} {
+       -command {if {$repo_config(gui.diffcontext) >= 1} {
                incr repo_config(gui.diffcontext) -1
                reshow_diff
        }}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Show More Context} \
-       -font font_ui \
-       -command {
+       -command {if {$repo_config(gui.diffcontext) < 99} {
                incr repo_config(gui.diffcontext)
                reshow_diff
-       }
+       }}
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add separator
 $ctxm add command -label {Options...} \
-       -font font_ui \
        -command do_options
 bind_button3 $ui_diff "
        set cursorX %x
@@ -5737,13 +2117,11 @@ unset ui_diff_applyhunk
 
 # -- Status Bar
 #
-set ui_status_value {Initializing...}
 label .status -textvariable ui_status_value \
        -anchor w \
        -justify left \
        -borderwidth 1 \
-       -relief sunken \
-       -font font_ui
+       -relief sunken
 pack .status -anchor w -side bottom -fill x
 
 # -- Load geometry
@@ -5786,6 +2164,12 @@ bind $ui_diff <Key-Up>     {catch {%W yview scroll -1 units};break}
 bind $ui_diff <Key-Down>   {catch {%W yview scroll  1 units};break}
 bind $ui_diff <Key-Left>   {catch {%W xview scroll -1 units};break}
 bind $ui_diff <Key-Right>  {catch {%W xview scroll  1 units};break}
+bind $ui_diff <Key-k>         {catch {%W yview scroll -1 units};break}
+bind $ui_diff <Key-j>         {catch {%W yview scroll  1 units};break}
+bind $ui_diff <Key-h>         {catch {%W xview scroll -1 units};break}
+bind $ui_diff <Key-l>         {catch {%W xview scroll  1 units};break}
+bind $ui_diff <Control-Key-b> {catch {%W yview scroll -1 pages};break}
+bind $ui_diff <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 bind $ui_diff <Button-1>   {focus %W}
 
 if {[is_enabled branch]} {
@@ -5811,16 +2195,7 @@ unset i
 set file_lists($ui_index) [list]
 set file_lists($ui_workdir) [list]
 
-set HEAD {}
-set PARENT {}
-set MERGE_HEAD [list]
-set commit_type {}
-set empty_tree {}
-set current_branch {}
-set current_diff_path {}
-set selected_commit_type new
-
-wm title . "[appname] ([file normalize [file dirname [gitdir]]])"
+wm title . "[appname] ([reponame]) [file normalize [file dirname [gitdir]]]"
 focus -force $ui_comm
 
 # -- Warn the user about environmental problems.  Cygwin's Tcl
@@ -5894,14 +2269,12 @@ if {[is_enabled transport]} {
 if {[is_enabled multicommit]} {
        set object_limit 2000
        if {[is_Windows]} {set object_limit 200}
-       regexp {^([0-9]+) objects,} [exec git count-objects] _junk objects_current
+       regexp {^([0-9]+) objects,} [git count-objects] _junk objects_current
        if {$objects_current >= $object_limit} {
                if {[ask_popup \
                        "This repository currently has $objects_current loose objects.
 
-To maintain optimal performance it is strongly
-recommended that you compress the database
-when more than $object_limit loose objects exist.
+To maintain optimal performance it is strongly recommended that you compress the database when more than $object_limit loose objects exist.
 
 Compress the database now?"] eq yes} {
                        do_gc