git-gui: Support merge.summary, merge.verbosity.
[gitweb.git] / git-gui.sh
index 7bd2b87fe3e636d293308d2a861da0dd4da77c17..1ba7f5a29306e817ebb1eb70877c128ad36ae6b8 100755 (executable)
@@ -60,6 +60,17 @@ proc is_many_config {name} {
        }
 }
 
+proc is_config_true {name} {
+       global repo_config
+       if {[catch {set v $repo_config($name)}]} {
+               return 0
+       } elseif {$v eq {true} || $v eq {1} || $v eq {yes}} {
+               return 1
+       } else {
+               return 0
+       }
+}
+
 proc load_config {include_global} {
        global repo_config global_config default_config
 
@@ -187,13 +198,13 @@ proc warn_popup {msg} {
        eval $cmd
 }
 
-proc info_popup {msg} {
+proc info_popup {msg {parent .}} {
        set title [appname]
        if {[reponame] ne {}} {
                append title " ([reponame])"
        }
        tk_messageBox \
-               -parent . \
+               -parent $parent \
                -icon info \
                -type ok \
                -title $title \
@@ -335,7 +346,7 @@ proc PARENT {} {
        return $empty_tree
 }
 
-proc rescan {after} {
+proc rescan {after {honor_trustmtime 1}} {
        global HEAD PARENT MERGE_HEAD commit_type
        global ui_index ui_workdir ui_status_value ui_comm
        global rescan_active file_states
@@ -366,7 +377,7 @@ proc rescan {after} {
                $ui_comm edit modified false
        }
 
-       if {$repo_config(gui.trustmtime) eq {true}} {
+       if {$honor_trustmtime && $repo_config(gui.trustmtime) eq {true}} {
                rescan_stage2 {} $after
        } else {
                set rescan_active 1
@@ -410,9 +421,9 @@ proc rescan_stage2 {fd after} {
        set fd_df [open "| git diff-files -z" r]
        set fd_lo [open $ls_others r]
 
-       fconfigure $fd_di -blocking 0 -translation binary
-       fconfigure $fd_df -blocking 0 -translation binary
-       fconfigure $fd_lo -blocking 0 -translation binary
+       fconfigure $fd_di -blocking 0 -translation binary -encoding binary
+       fconfigure $fd_df -blocking 0 -translation binary -encoding binary
+       fconfigure $fd_lo -blocking 0 -translation binary -encoding binary
        fileevent $fd_di readable [list read_diff_index $fd_di $after]
        fileevent $fd_df readable [list read_diff_files $fd_df $after]
        fileevent $fd_lo readable [list read_ls_others $fd_lo $after]
@@ -428,6 +439,7 @@ proc load_message {file} {
                }
                set content [string trim [read $fd]]
                close $fd
+               regsub -all -line {[ \r\t]+$} $content {} content
                $ui_comm delete 0.0 end
                $ui_comm insert end $content
                return 1
@@ -450,8 +462,9 @@ proc read_diff_index {fd after} {
 
                incr c
                set i [split [string range $buf_rdi $c [expr {$z1 - 2}]] { }]
+               set p [string range $buf_rdi $z1 [expr {$z2 - 1}]]
                merge_state \
-                       [string range $buf_rdi $z1 [expr {$z2 - 1}]] \
+                       [encoding convertfrom $p] \
                        [lindex $i 4]? \
                        [list [lindex $i 0] [lindex $i 2]] \
                        [list]
@@ -482,8 +495,9 @@ proc read_diff_files {fd after} {
 
                incr c
                set i [split [string range $buf_rdf $c [expr {$z1 - 2}]] { }]
+               set p [string range $buf_rdf $z1 [expr {$z2 - 1}]]
                merge_state \
-                       [string range $buf_rdf $z1 [expr {$z2 - 1}]] \
+                       [encoding convertfrom $p] \
                        ?[lindex $i 4] \
                        [list] \
                        [list [lindex $i 0] [lindex $i 2]]
@@ -506,7 +520,7 @@ proc read_ls_others {fd after} {
        set pck [split $buf_rlo "\0"]
        set buf_rlo [lindex $pck end]
        foreach p [lrange $pck 0 end-1] {
-               merge_state $p ?O
+               merge_state [encoding convertfrom $p] ?O
        }
        rescan_done $fd buf_rlo $after
 }
@@ -524,24 +538,6 @@ proc rescan_done {fd buf after} {
        prune_selection
        unlock_index
        display_all_files
-
-       if {$repo_config(gui.partialinclude) ne {true}} {
-               set pathList [list]
-               foreach path [array names file_states] {
-                       switch -- [lindex $file_states($path) 0] {
-                       A? -
-                       M? {lappend pathList $path}
-                       }
-               }
-               if {$pathList ne {}} {
-                       update_index \
-                               "Updating included files" \
-                               $pathList \
-                               [concat {reshow_diff;} $after]
-                       return
-               }
-       }
-
        reshow_diff
        uplevel #0 $after
 }
@@ -561,33 +557,39 @@ proc prune_selection {} {
 ## diff
 
 proc clear_diff {} {
-       global ui_diff current_diff ui_index ui_workdir
+       global ui_diff current_diff_path current_diff_header
+       global ui_index ui_workdir
 
        $ui_diff conf -state normal
        $ui_diff delete 0.0 end
        $ui_diff conf -state disabled
 
-       set current_diff {}
+       set current_diff_path {}
+       set current_diff_header {}
 
        $ui_index tag remove in_diff 0.0 end
        $ui_workdir tag remove in_diff 0.0 end
 }
 
 proc reshow_diff {} {
-       global current_diff ui_status_value file_states
-
-       if {$current_diff eq {}
-               || [catch {set s $file_states($current_diff)}]} {
+       global ui_status_value file_states file_lists
+       global current_diff_path current_diff_side
+
+       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 $current_diff
+               show_diff $p $current_diff_side
        }
 }
 
 proc handle_empty_diff {} {
-       global current_diff file_states file_lists
+       global current_diff_path file_states file_lists
 
-       set path $current_diff
+       set path $current_diff_path
        set s $file_states($path)
        if {[lindex $s 0] ne {_M}} return
 
@@ -596,41 +598,33 @@ proc handle_empty_diff {} {
 [short_path $path] has no changes.
 
 The modification date of this file was updated
-by another application and you currently have
-the Trust File Modification Timestamps option
-enabled, so Git did not automatically detect
-that there are no content differences in this
-file.
-
-This file will now be removed from the modified
-files list, to prevent possible confusion.
-"
-       if {[catch {exec git update-index -- $path} err]} {
-               error_popup "Failed to refresh index:\n\n$err"
-       }
+by another application, but the content within
+the file was not changed.
+
+A rescan will be automatically started to find
+other files which may have the same state."
 
        clear_diff
        display_file $path __
+       rescan {set ui_status_value {Ready.}} 0
 }
 
-proc show_diff {path {w {}} {lno {}}} {
+proc show_diff {path w {lno {}}} {
        global file_states file_lists
        global is_3way_diff diff_active repo_config
-       global ui_diff current_diff ui_status_value
+       global ui_diff ui_status_value ui_index ui_workdir
+       global current_diff_path current_diff_side current_diff_header
 
        if {$diff_active || ![lock_index read]} return
 
        clear_diff
-       if {$w eq {} || $lno == {}} {
-               foreach w [array names file_lists] {
-                       set lno [lsearch -sorted $file_lists($w) $path]
-                       if {$lno >= 0} {
-                               incr lno
-                               break
-                       }
+       if {$lno == {}} {
+               set lno [lsearch -sorted -exact $file_lists($w) $path]
+               if {$lno >= 0} {
+                       incr lno
                }
        }
-       if {$w ne {} && $lno >= 1} {
+       if {$lno >= 1} {
                $w tag add in_diff $lno.0 [expr {$lno + 1}].0
        }
 
@@ -638,25 +632,20 @@ proc show_diff {path {w {}} {lno {}}} {
        set m [lindex $s 0]
        set is_3way_diff 0
        set diff_active 1
-       set current_diff $path
+       set current_diff_path $path
+       set current_diff_side $w
+       set current_diff_header {}
        set ui_status_value "Loading diff of [escape_path $path]..."
 
-       set cmd [list | git diff-index]
-       lappend cmd --no-color
-       if {$repo_config(gui.diffcontext) > 0} {
-               lappend cmd "-U$repo_config(gui.diffcontext)"
-       }
-       lappend cmd -p
-
-       switch $m {
-       MM {
-               lappend cmd -c
-       }
-       _O {
+       # - Git won't give us the diff, there's nothing to compare to!
+       #
+       if {$m eq {_O}} {
+               set max_sz [expr {128 * 1024}]
                if {[catch {
                                set fd [open $path r]
-                               set content [read $fd]
+                               set content [read $fd $max_sz]
                                close $fd
+                               set sz [file size $path]
                        } err ]} {
                        set diff_active 0
                        unlock_index
@@ -665,16 +654,60 @@ proc show_diff {path {w {}} {lno {}}} {
                        return
                }
                $ui_diff conf -state normal
-               $ui_diff insert end $content
+               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_@
+                       }
+               }
                $ui_diff conf -state disabled
                set diff_active 0
                unlock_index
                set ui_status_value {Ready.}
                return
        }
+
+       set cmd [list | git]
+       if {$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
+               }
        }
 
-       lappend cmd [PARENT]
+       lappend cmd -p
+       lappend cmd --no-color
+       if {$repo_config(gui.diffcontext) > 0} {
+               lappend cmd "-U$repo_config(gui.diffcontext)"
+       }
+       if {$w eq $ui_index} {
+               lappend cmd [PARENT]
+       }
        lappend cmd --
        lappend cmd $path
 
@@ -686,22 +719,30 @@ proc show_diff {path {w {}} {lno {}}} {
                return
        }
 
-       fconfigure $fd -blocking 0 -translation auto
+       fconfigure $fd \
+               -blocking 0 \
+               -encoding binary \
+               -translation binary
        fileevent $fd readable [list read_diff $fd]
 }
 
 proc read_diff {fd} {
-       global ui_diff ui_status_value is_3way_diff diff_active
-       global repo_config
+       global ui_diff ui_status_value diff_active
+       global is_3way_diff current_diff_header
 
        $ui_diff conf -state normal
        while {[gets $fd line] >= 0} {
                # -- Cleanup uninteresting diff header lines.
                #
-               if {[string match {diff --git *}      $line]} continue
-               if {[string match {diff --combined *} $line]} continue
-               if {[string match {--- *}             $line]} continue
-               if {[string match {+++ *}             $line]} continue
+               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"
                }
@@ -710,30 +751,60 @@ proc read_diff {fd} {
                #
                if {[string match {@@@ *} $line]} {set is_3way_diff 1}
 
-               # -- Reformat a 3 way diff, 'cause its too weird.
-               #
-               if {$is_3way_diff} {
+               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_+ ; set op { +}}
-                       {--} {set tags d_- ; set op { -}}
-                       { +} {set tags d_++; set op {++}}
-                       { -} {set tags d_--; set op {--}}
-                       {+ } {set tags d_-+; set op {-+}}
-                       {- } {set tags d_+-; set op {+-}}
-                       default {set tags {}}
+                       { +} {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 {}
+                       }
                        }
-                       set line [string replace $line 0 1 $op]
                } else {
-                       switch -- [string index $line 0] {
-                       @ {set tags d_@}
-                       + {set tags d_+}
-                       - {set tags d_-}
-                       default {set tags {}}
+                       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
@@ -744,19 +815,90 @@ proc read_diff {fd} {
                unlock_index
                set ui_status_value {Ready.}
 
-               if {$repo_config(gui.trustmtime) eq {true}
-                       && [$ui_diff index end] eq {2.0}} {
+               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.
@@ -783,11 +925,18 @@ current merge activity.
        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]} {
@@ -843,9 +992,10 @@ proc committer_ident {} {
 
 proc commit_tree {} {
        global HEAD commit_type file_states ui_comm repo_config
+       global ui_status_value pch_error
 
-       if {![lock_index update]} return
        if {[committer_ident] eq {}} return
+       if {![lock_index update]} return
 
        # -- Our in memory state should match the repository.
        #
@@ -875,12 +1025,12 @@ The rescan will be automatically started now.
                _? {continue}
                A? -
                D? -
-               M? {set files_ready 1; break}
+               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 include the file before committing.
+You must resolve them and add the file before committing.
 "
                        unlock_index
                        return
@@ -894,9 +1044,9 @@ File [short_path $path] cannot be committed by this program.
                }
        }
        if {!$files_ready} {
-               error_popup {No included files to commit.
+               info_popup {No changes to commit.
 
-You must include at least 1 file before you can commit.
+You must add at least 1 file before you can commit.
 }
                unlock_index
                return
@@ -905,6 +1055,7 @@ You must include at least 1 file before you can commit.
        # -- 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.
 
@@ -918,33 +1069,8 @@ A good commit message has the following format:
                return
        }
 
-       # -- Update included files if partialincludes are off.
+       # -- Run the pre-commit hook.
        #
-       if {$repo_config(gui.partialinclude) ne {true}} {
-               set pathList [list]
-               foreach path [array names file_states] {
-                       switch -glob -- [lindex $file_states($path) 0] {
-                       A? -
-                       M? {lappend pathList $path}
-                       }
-               }
-               if {$pathList ne {}} {
-                       unlock_index
-                       update_index \
-                               "Updating included files" \
-                               $pathList \
-                               [concat {lock_index update;} \
-                                       [list commit_prehook $curHEAD $msg]]
-                       return
-               }
-       }
-
-       commit_prehook $curHEAD $msg
-}
-
-proc commit_prehook {curHEAD msg} {
-       global ui_status_value pch_error
-
        set pchook [gitdir hooks pre-commit]
 
        # On Cygwin [file executable] might lie so we need to ask
@@ -1000,9 +1126,10 @@ proc commit_writetree {curHEAD msg} {
 
 proc commit_committree {fd_wt curHEAD msg} {
        global HEAD PARENT MERGE_HEAD commit_type
-       global single_commit
+       global single_commit 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]} {
@@ -1012,6 +1139,17 @@ proc commit_committree {fd_wt curHEAD msg} {
                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]
@@ -1024,7 +1162,7 @@ proc commit_committree {fd_wt curHEAD msg} {
                # git commit-tree writes to stderr during initial commit.
                lappend cmd 2>/dev/null
        }
-       lappend cmd << $msg
+       lappend cmd <$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.}
@@ -1052,8 +1190,17 @@ proc commit_committree {fd_wt curHEAD msg} {
                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]}
@@ -1133,87 +1280,25 @@ proc commit_committree {fd_wt curHEAD msg} {
 
 ######################################################################
 ##
-## fetch pull push
+## fetch push
 
 proc fetch_from {remote} {
-       set w [new_console "fetch $remote" \
+       set w [new_console \
+               "fetch $remote" \
                "Fetching new changes from $remote"]
        set cmd [list git fetch]
        lappend cmd $remote
-       console_exec $w $cmd
-}
-
-proc pull_remote {remote branch} {
-       global HEAD commit_type file_states repo_config
-
-       if {![lock_index update]} return
-
-       # -- Our in memory state should match the repository.
-       #
-       repository_state curType curHEAD curMERGE_HEAD
-       if {$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 pull operation can be started.
-
-The rescan will be automatically started now.
-}
-               unlock_index
-               rescan {set ui_status_value {Ready.}}
-               return
-       }
-
-       # -- No differences should exist before a pull.
-       #
-       if {[array size file_states] != 0} {
-               error_popup {Uncommitted but modified files are present.
-
-You should not perform a pull with unmodified
-files in your working directory as Git will be
-unable to recover from an incorrect merge.
-
-You should commit or revert all changes before
-starting a pull operation.
-}
-               unlock_index
-               return
-       }
-
-       set w [new_console "pull $remote $branch" \
-               "Pulling new changes from branch $branch in $remote"]
-       set cmd [list git pull]
-       if {$repo_config(gui.pullsummary) eq {false}} {
-               lappend cmd --no-summary
-       }
-       lappend cmd $remote
-       lappend cmd $branch
-       console_exec $w $cmd [list post_pull_remote $remote $branch]
-}
-
-proc post_pull_remote {remote branch success} {
-       global HEAD PARENT MERGE_HEAD commit_type selected_commit_type
-       global ui_status_value
-
-       unlock_index
-       if {$success} {
-               repository_state commit_type HEAD MERGE_HEAD
-               set PARENT $HEAD
-               set selected_commit_type new
-               set ui_status_value "Pulling $branch from $remote complete."
-       } else {
-               rescan [list set ui_status_value \
-                       "Conflicts detected while pulling $branch from $remote."]
-       }
+       console_exec $w $cmd console_done
 }
 
 proc push_to {remote} {
-       set w [new_console "push $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_exec $w $cmd console_done
 }
 
 ######################################################################
@@ -1291,7 +1376,7 @@ proc display_file_helper {w path icon_name old_m new_m} {
        global file_lists
 
        if {$new_m eq {_}} {
-               set lno [lsearch -sorted $file_lists($w) $path]
+               set lno [lsearch -sorted -exact $file_lists($w) $path]
                if {$lno >= 0} {
                        set file_lists($w) [lreplace $file_lists($w) $lno $lno]
                        incr lno
@@ -1302,7 +1387,7 @@ proc display_file_helper {w path icon_name old_m new_m} {
        } elseif {$old_m eq {_} && $new_m ne {_}} {
                lappend file_lists($w) $path
                set file_lists($w) [lsort -unique $file_lists($w)]
-               set lno [lsearch -sorted $file_lists($w) $path]
+               set lno [lsearch -sorted -exact $file_lists($w) $path]
                incr lno
                $w conf -state normal
                $w image create $lno.0 \
@@ -1327,12 +1412,27 @@ proc display_file {path state} {
        set new_m [lindex $s 0]
        set icon_name [lindex $s 1]
 
-       display_file_helper     $ui_index $path $icon_name \
-               [string index $old_m 0] \
-               [string index $new_m 0]
-       display_file_helper     $ui_workdir $path $icon_name \
-               [string index $old_m 1] \
-               [string index $new_m 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)
@@ -1355,7 +1455,7 @@ proc display_all_files_helper {w path icon_name m} {
 proc display_all_files {} {
        global ui_index ui_workdir
        global file_states file_lists
-       global last_clicked selected_paths
+       global last_clicked
 
        $ui_index conf -state normal
        $ui_workdir conf -state normal
@@ -1372,13 +1472,20 @@ proc display_all_files {} {
                set m [lindex $s 0]
                set icon_name [lindex $s 1]
 
-               if {[string index $m 0] ne {_}} {
+               set s [string index $m 0]
+               if {$s ne {U} && $s ne {_}} {
                        display_all_files_helper $ui_index $path \
-                               $icon_name [string index $m 0]
+                               $icon_name $s
+               }
+
+               if {[string index $m 0] eq {U}} {
+                       set s U
+               } else {
+                       set s [string index $m 1]
                }
-               if {[string index $m 1] ne {_}} {
+               if {$s ne {_}} {
                        display_all_files_helper $ui_workdir $path \
-                               $icon_name [string index $m 1]
+                               $icon_name $s
                }
        }
 
@@ -1407,6 +1514,7 @@ proc update_indexinfo {msg pathList after} {
                -blocking 0 \
                -buffering full \
                -buffersize 512 \
+               -encoding binary \
                -translation binary
        fileevent $fd writable [list \
                write_update_indexinfo \
@@ -1421,7 +1529,7 @@ proc update_indexinfo {msg pathList after} {
 
 proc write_update_indexinfo {fd pathList totalCnt batch msg after} {
        global update_index_cp ui_status_value
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {$update_index_cp >= $totalCnt} {
                close $fd
@@ -1447,10 +1555,7 @@ proc write_update_indexinfo {fd pathList totalCnt batch msg after} {
                set info [lindex $s 2]
                if {$info eq {}} continue
 
-               puts -nonewline $fd $info
-               puts -nonewline $fd "\t"
-               puts -nonewline $fd $path
-               puts -nonewline $fd "\0"
+               puts -nonewline $fd "$info\t[encoding convertto $path]\0"
                display_file $path $new
        }
 
@@ -1482,6 +1587,7 @@ proc update_index {msg pathList after} {
                -blocking 0 \
                -buffering full \
                -buffersize 512 \
+               -encoding binary \
                -translation binary
        fileevent $fd writable [list \
                write_update_index \
@@ -1496,7 +1602,7 @@ proc update_index {msg pathList after} {
 
 proc write_update_index {fd pathList totalCnt batch msg after} {
        global update_index_cp ui_status_value
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {$update_index_cp >= $totalCnt} {
                close $fd
@@ -1512,26 +1618,21 @@ proc write_update_index {fd pathList totalCnt batch msg after} {
                incr update_index_cp
 
                switch -glob -- [lindex $file_states($path) 0] {
-               AD -
-               MD -
-               UD -
-               _D {set new D_}
-
-               _M -
-               MM -
-               UM -
-               U_ -
-               M_ {set new M_}
-
+               AD {set new __}
+               ?D {set new D_}
                _O -
-               AM -
-               A_ {set new A_}
-
+               AM {set new A_}
+               U? {
+                       if {[file exists $path]} {
+                               set new M_
+                       } else {
+                               set new D_
+                       }
+               }
+               ?M {set new M_}
                ?? {continue}
                }
-
-               puts -nonewline $fd $path
-               puts -nonewline $fd "\0"
+               puts -nonewline $fd "[encoding convertto $path]\0"
                display_file $path $new
        }
 
@@ -1569,6 +1670,7 @@ proc checkout_index {msg pathList after} {
                -blocking 0 \
                -buffering full \
                -buffersize 512 \
+               -encoding binary \
                -translation binary
        fileevent $fd writable [list \
                write_checkout_index \
@@ -1583,7 +1685,7 @@ proc checkout_index {msg pathList after} {
 
 proc write_checkout_index {fd pathList totalCnt batch msg after} {
        global update_index_cp ui_status_value
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {$update_index_cp >= $totalCnt} {
                close $fd
@@ -1601,7 +1703,7 @@ proc write_checkout_index {fd pathList totalCnt batch msg after} {
                U? {continue}
                ?M -
                ?D {
-                       puts -nonewline $fd "$path\0"
+                       puts -nonewline $fd "[encoding convertto $path]\0"
                        display_file $path ?_
                }
                }
@@ -1618,16 +1720,27 @@ proc write_checkout_index {fd pathList totalCnt batch msg after} {
 ##
 ## 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 tracking_branches
+       global all_heads
 
        set all_heads [list]
-       set cmd [list git for-each-ref]
-       lappend cmd --format=%(refname)
-       lappend cmd refs/heads
-       set fd [open "| $cmd" r]
+       set fd [open "| git for-each-ref --format=%(refname) refs/heads" r]
        while {[gets $fd line] > 0} {
-               if {![catch {set info $tracking_branches($line)}]} continue
+               if {[is_tracking_branch $line]} continue
                if {![regsub ^refs/heads/ $line {} name]} continue
                lappend all_heads $name
        }
@@ -1636,10 +1749,28 @@ proc load_all_heads {} {
        set all_heads [lsort $all_heads]
 }
 
-proc populate_branch_menu {m} {
+proc populate_branch_menu {} {
        global all_heads disable_on_lock
 
-       $m add separator
+       set m .mbar.branch
+       set last [$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 \
@@ -1652,65 +1783,562 @@ proc populate_branch_menu {m} {
        }
 }
 
-proc do_create_branch {} {
-       error "NOT IMPLEMENTED"
-}
-
-proc do_delete_branch {} {
-       error "NOT IMPLEMENTED"
-}
-
-proc switch_branch {b} {
-       global HEAD commit_type file_states current_branch
-       global selected_commit_type ui_comm
+proc all_tracking_branches {} {
+       global tracking_branches
 
-       if {![lock_index switch]} return
+       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
+               }
+       }
 
-       # -- Backup the selected branch (repository_state resets it)
-       #
-       set new_branch $current_branch
+       if {$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
+       }
 
-       # -- 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.
+       return [lsort -unique $all_trackings]
+}
 
-Another Git program has modified this repository
-since the last scan.  A rescan must be performed
-before the current branch can be changed.
+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
 
-The rescan will be automatically started now.
-}
-               unlock_index
-               rescan {set ui_status_value {Ready.}}
+       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
        }
 
-       # -- Toss the message buffer if we are in amend mode.
-       #
-       if {[string match amend* $curType]} {
-               $ui_comm delete 0.0 end
-               $ui_comm edit reset
-               $ui_comm edit modified false
+       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
        }
 
-       set selected_commit_type new
-       set current_branch $new_branch
+       lappend all_heads $newbranch
+       set all_heads [lsort $all_heads]
+       populate_branch_menu
+       destroy $w
+       if {$create_branch_checkout} {
+               switch_branch $newbranch
+       }
+}
 
-       unlock_index
-       error "NOT FINISHED"
+proc radio_selector {varname value args} {
+       upvar #0 $varname var
+       set var $value
 }
 
-######################################################################
-##
-## remote management
+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]
 
-proc load_all_remotes {} {
-       global repo_config
+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]
@@ -1724,137 +2352,550 @@ proc load_all_remotes {} {
                        -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 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 $revs
+}
+
+proc start_local_merge_action {w} {
+       global HEAD ui_status_value current_branch
+
+       set cmd [list git merge]
+       if {![is_config_true merge.summary]} {
+               lappend cmd --no-summary
+       }
+
+       set names {}
+       set revcnt 0
+       foreach i [$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.
+
+The working directory will now be reset.
+
+You can attempt this merge again
+by merging only one branch at a time." $w
+
+                       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 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
 
-       foreach line [array names repo_config remote.*.url] {
-               if {![regexp ^remote\.(.*)\.url\$ $line line name]} continue
-               lappend all_remotes $name
+       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
 
-               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]
-               }
+       foreach ref [lsort -unique $to_show] {
+               $w.source.l insert end $ref
        }
 
-       set all_remotes [lsort -unique $all_remotes]
+       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 populate_fetch_menu {m} {
-       global all_remotes repo_config
+proc do_reset_hard {} {
+       global HEAD commit_type file_states
 
-       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 {[string match amend* $commit_type]} {
+               info_popup {Cannot abort while amending.
 
-               if {$enable} {
-                       $m add command \
-                               -label "Fetch from $r..." \
-                               -command [list fetch_from $r] \
-                               -font font_ui
-               }
-       }
+You must finish amending this commit.
 }
+               return
+       }
 
-proc populate_push_menu {m} {
-       global all_remotes repo_config
+       if {![lock_index abort]} return
 
-       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 {[string match *merge* $commit_type]} {
+               set op merge
+       } else {
+               set op commit
+       }
 
-               if {$enable} {
-                       $m add command \
-                               -label "Push to $r..." \
-                               -command [list push_to $r] \
-                               -font font_ui
-               }
+       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 populate_pull_menu {m} {
-       global repo_config all_remotes disable_on_lock
+proc reset_hard_wait {fd} {
+       global ui_comm
 
-       foreach remote $all_remotes {
-               set rb_list [list]
-               if {[array get repo_config remote.$remote.url] ne {}} {
-                       if {[array get repo_config remote.$remote.fetch] ne {}} {
-                               foreach line $repo_config(remote.$remote.fetch) {
-                                       if {[regexp {^([^:]+):} $line line rb]} {
-                                               lappend rb_list $rb
-                                       }
-                               }
-                       }
-               } else {
-                       catch {
-                               set fd [open [gitdir remotes $remote] r]
-                               while {[gets $fd line] >= 0} {
-                                       if {[regexp {^Pull:[ \t]*([^:]+):} $line line rb]} {
-                                               lappend rb_list $rb
-                                       }
-                               }
-                               close $fd
-                       }
-               }
+       read $fd
+       if {[eof $fd]} {
+               close $fd
+               unlock_index
 
-               foreach rb $rb_list {
-                       regsub ^refs/heads/ $rb {} rb_short
-                       $m add command \
-                               -label "Branch $rb_short from $remote..." \
-                               -command [list pull_remote $remote $rb] \
-                               -font font_ui
-                       lappend disable_on_lock \
-                               [list $m entryconf [$m index last] -state]
-               }
+               $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.}}
        }
 }
 
@@ -1946,6 +2987,7 @@ set all_icons(U$ui_index)   file_merge
 set all_icons(_$ui_workdir) file_plain
 set all_icons(M$ui_workdir) file_mod
 set all_icons(D$ui_workdir) file_question
+set all_icons(U$ui_workdir) file_merge
 set all_icons(O$ui_workdir) file_plain
 
 set max_status_desc 0
@@ -1967,6 +3009,7 @@ foreach i {
                {DO "Staged for removal, still present"}
 
                {U_ "Requires merge resolution"}
+               {UU "Requires merge resolution"}
                {UM "Requires merge resolution"}
                {UD "Requires merge resolution"}
        } {
@@ -2096,7 +3139,7 @@ proc console_init {w} {
                -command "tk_textCopy $w.m.t"
        $w.ctxm add command -label "Select All" \
                -font font_ui \
-               -command "$w.m.t tag add sel 0.0 end"
+               -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 "
@@ -2119,7 +3162,7 @@ proc console_init {w} {
        return $w
 }
 
-proc console_exec {w cmd {after {}}} {
+proc console_exec {w cmd after} {
        # -- Windows tosses the enviroment when we exec our child.
        #    But most users need that so we have to relogin. :-(
        #
@@ -2138,7 +3181,7 @@ proc console_exec {w cmd {after {}}} {
 }
 
 proc console_read {w fd after} {
-       global console_cr console_data
+       global console_cr
 
        set buf [read $fd]
        if {$buf ne {}} {
@@ -2172,25 +3215,72 @@ proc console_read {w fd after} {
        fconfigure $fd -blocking 1
        if {[eof $fd]} {
                if {[catch {close $fd}]} {
-                       if {![winfo exists $w]} {console_init $w}
-                       $w.m.s conf -background red -text {Error: Command Failed}
-                       $w.ok conf -state normal
                        set ok 0
-               } elseif {[winfo exists $w]} {
-                       $w.m.s conf -background green -text {Success}
-                       $w.ok conf -state normal
+               } else {
                        set ok 1
                }
-               array unset console_cr $w
-               array unset console_data $w
-               if {$after ne {}} {
-                       uplevel #0 $after $ok
-               }
+               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
+       }
+
+       array unset console_cr $w
+       array unset console_data $w
+}
+
 ######################################################################
 ##
 ## ui commands
@@ -2222,9 +3312,82 @@ 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_exec $w {git gc}
+       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 {} {
@@ -2234,7 +3397,7 @@ proc do_fsck_objects {} {
        lappend cmd --full
        lappend cmd --cache
        lappend cmd --strict
-       console_exec $w $cmd
+       console_exec $w $cmd console_done
 }
 
 set is_quitting 0
@@ -2249,12 +3412,13 @@ proc do_quit {} {
        #
        set save [gitdir GITGUI_MSG]
        set msg [string trim [$ui_comm get 0.0 end]]
-       if {![string match amend* $commit_type]
-               && [$ui_comm edit modified]
+       regsub -all -line {[ \r\t]+$} $msg {} msg
+       if {(![string match amend* $commit_type]
+               || [$ui_comm edit modified])
                && $msg ne {}} {
                catch {
                        set fd [open $save w]
-                       puts $fd [string trim [$ui_comm get 0.0 end]]
+                       puts -nonewline $fd $msg
                        close $fd
                }
        } else {
@@ -2282,7 +3446,7 @@ proc do_rescan {} {
 }
 
 proc unstage_helper {txt paths} {
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {![lock_index begin-update]} return
 
@@ -2294,7 +3458,7 @@ proc unstage_helper {txt paths} {
                M? -
                D? {
                        lappend pathList $path
-                       if {$path eq $current_diff} {
+                       if {$path eq $current_diff_path} {
                                set after {reshow_diff;}
                        }
                }
@@ -2311,21 +3475,21 @@ proc unstage_helper {txt paths} {
 }
 
 proc do_unstage_selection {} {
-       global current_diff selected_paths
+       global current_diff_path selected_paths
 
        if {[array size selected_paths] > 0} {
                unstage_helper \
                        {Unstaging selected files from commit} \
                        [array names selected_paths]
-       } elseif {$current_diff ne {}} {
+       } elseif {$current_diff_path ne {}} {
                unstage_helper \
-                       "Unstaging [short_path $current_diff] from commit" \
-                       [list $current_diff]
+                       "Unstaging [short_path $current_diff_path] from commit" \
+                       [list $current_diff_path]
        }
 }
 
 proc add_helper {txt paths} {
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {![lock_index begin-update]} return
 
@@ -2333,16 +3497,12 @@ proc add_helper {txt paths} {
        set after {}
        foreach path $paths {
                switch -glob -- [lindex $file_states($path) 0] {
-               AM -
-               AD -
-               MM -
-               MD -
-               U? -
-               _M -
-               _D -
-               _O {
+               _O -
+               ?M -
+               ?D -
+               U? {
                        lappend pathList $path
-                       if {$path eq $current_diff} {
+                       if {$path eq $current_diff_path} {
                                set after {reshow_diff;}
                        }
                }
@@ -2359,16 +3519,16 @@ proc add_helper {txt paths} {
 }
 
 proc do_add_selection {} {
-       global current_diff selected_paths
+       global current_diff_path selected_paths
 
        if {[array size selected_paths] > 0} {
                add_helper \
                        {Adding selected files} \
                        [array names selected_paths]
-       } elseif {$current_diff ne {}} {
+       } elseif {$current_diff_path ne {}} {
                add_helper \
-                       "Adding [short_path $current_diff]" \
-                       [list $current_diff]
+                       "Adding [short_path $current_diff_path]" \
+                       [list $current_diff_path]
        }
 }
 
@@ -2377,22 +3537,17 @@ proc do_add_all {} {
 
        set paths [list]
        foreach path [array names file_states] {
-               switch -- [lindex $file_states($path) 0] {
-               AM -
-               AD -
-               MM -
-               MD -
-               _M -
-               _D {lappend paths $path}
+               switch -glob -- [lindex $file_states($path) 0] {
+               U? {continue}
+               ?M -
+               ?D {lappend paths $path}
                }
        }
-       add_helper \
-               {Adding all modified files} \
-               $paths
+       add_helper {Adding all changed files} $paths
 }
 
 proc revert_helper {txt paths} {
-       global file_states current_diff
+       global file_states current_diff_path
 
        if {![lock_index begin-update]} return
 
@@ -2404,7 +3559,7 @@ proc revert_helper {txt paths} {
                ?M -
                ?D {
                        lappend pathList $path
-                       if {$path eq $current_diff} {
+                       if {$path eq $current_diff_path} {
                                set after {reshow_diff;}
                        }
                }
@@ -2443,16 +3598,16 @@ Any unadded changes will be permanently lost by the revert." \
 }
 
 proc do_revert_selection {} {
-       global current_diff selected_paths
+       global current_diff_path selected_paths
 
        if {[array size selected_paths] > 0} {
                revert_helper \
                        {Reverting selected files} \
                        [array names selected_paths]
-       } elseif {$current_diff ne {}} {
+       } elseif {$current_diff_path ne {}} {
                revert_helper \
-                       "Reverting [short_path $current_diff]" \
-                       [list $current_diff]
+                       "Reverting [short_path $current_diff_path]" \
+                       [list $current_diff_path]
        }
 }
 
@@ -2605,48 +3760,69 @@ proc do_options {} {
        button $w.buttons.cancel -text {Cancel} \
                -font font_ui \
                -command [list destroy $w]
-       pack $w.buttons.cancel -side right
+       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 \
-               -relief raised -borderwidth 2
+               -font font_ui
        labelframe $w.global -text {Global (All Repositories)} \
-               -font font_ui \
-               -relief raised -borderwidth 2
+               -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 {
-               {b partialinclude {Allow Partially Added Files}}
-               {b pullsummary {Show Pull Summary}}
-               {b trustmtime  {Trust File Modification Timestamps}}
-               {i diffcontext {Number of Diff Context Lines}}
+               {b merge.summary {Show Merge Summary}}
+               {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 $type {
+                       switch -glob -- $type {
                        b {
-                               checkbutton $w.$f.$name -text $text \
-                                       -variable ${f}_config_new(gui.$name) \
+                               checkbutton $w.$f.$optid -text $text \
+                                       -variable ${f}_config_new($name) \
                                        -onvalue true \
                                        -offvalue false \
                                        -font font_ui
-                               pack $w.$f.$name -side top -anchor w
+                               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
                        }
-                       i {
-                               frame $w.$f.$name
-                               label $w.$f.$name.l -text "$text:" -font font_ui
-                               pack $w.$f.$name.l -side left -anchor w -fill x
-                               spinbox $w.$f.$name.v \
-                                       -textvariable ${f}_config_new(gui.$name) \
-                                       -from 1 -to 99 -increment 1 \
-                                       -width 3 \
+                       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.$name.v -side right -anchor e
-                               pack $w.$f.$name -side top -anchor w -fill x
+                               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
                        }
                        }
                }
@@ -2674,6 +3850,7 @@ proc do_options {} {
                        -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
@@ -2835,7 +4012,7 @@ proc do_macosx_app {} {
 }
 
 proc toggle_or_diff {w x y} {
-       global file_states file_lists current_diff ui_index ui_workdir
+       global file_states file_lists current_diff_path ui_index ui_workdir
        global last_clicked selected_paths
 
        set pos [split [$w index @$x,$y] .]
@@ -2853,7 +4030,7 @@ proc toggle_or_diff {w x y} {
        $ui_workdir tag remove in_sel 0.0 end
 
        if {$col == 0} {
-               if {$current_diff eq $path} {
+               if {$current_diff_path eq $path} {
                        set after {reshow_diff;}
                } else {
                        set after {}
@@ -2875,18 +4052,21 @@ proc toggle_or_diff {w x y} {
 }
 
 proc add_one_to_selection {w x y} {
-       global file_lists
-       global last_clicked selected_paths
+       global file_lists last_clicked selected_paths
 
-       set pos [split [$w index @$x,$y] .]
-       set lno [lindex $pos 0]
-       set col [lindex $pos 1]
+       set lno [lindex [split [$w index @$x,$y] .] 0]
        set path [lindex $file_lists($w) [expr {$lno - 1}]]
        if {$path eq {}} {
                set last_clicked {}
                return
        }
 
+       if {$last_clicked ne {}
+               && [lindex $last_clicked 0] ne $w} {
+               array unset selected_paths
+               [lindex $last_clicked 0] tag remove in_sel 0.0 end
+       }
+
        set last_clicked [list $w $lno]
        if {[catch {set in_sel $selected_paths($path)}]} {
                set in_sel 0
@@ -2901,16 +4081,14 @@ proc add_one_to_selection {w x y} {
 }
 
 proc add_range_to_selection {w x y} {
-       global file_lists
-       global last_clicked selected_paths
+       global file_lists last_clicked selected_paths
 
        if {[lindex $last_clicked 0] ne $w} {
                toggle_or_diff $w $x $y
                return
        }
 
-       set pos [split [$w index @$x,$y] .]
-       set lno [lindex $pos 0]
+       set lno [lindex [split [$w index @$x,$y] .] 0]
        set lc [lindex $last_clicked 1]
        if {$lc < $lno} {
                set begin $lc
@@ -2975,10 +4153,11 @@ proc apply_config {} {
        }
 }
 
+set default_config(merge.summary) true
+set default_config(merge.verbosity) 2
 set default_config(gui.trustmtime) false
-set default_config(gui.pullsummary) true
-set default_config(gui.partialinclude) false
 set default_config(gui.diffcontext) 5
+set default_config(gui.newbranchtemplate) {}
 set default_config(gui.fontui) [font configure font_ui]
 set default_config(gui.fontdiff) [font configure font_diff]
 set font_descs {
@@ -3002,8 +4181,8 @@ if {!$single_commit} {
 }
 .mbar add cascade -label Commit -menu .mbar.commit
 if {!$single_commit} {
+       .mbar add cascade -label Merge -menu .mbar.merge
        .mbar add cascade -label Fetch -menu .mbar.fetch
-       .mbar add cascade -label Pull -menu .mbar.pull
        .mbar add cascade -label Push -menu .mbar.push
 }
 . configure -menu .mbar
@@ -3015,15 +4194,17 @@ menu .mbar.repository
        -label {Visualize Current Branch} \
        -command {do_gitk {}} \
        -font font_ui
-if {![is_MacOSX]} {
-       .mbar.repository add command \
-               -label {Visualize All Branches} \
-               -command {do_gitk {--all}} \
-               -font font_ui
-}
+.mbar.repository add command \
+       -label {Visualize All Branches} \
+       -command {do_gitk {--all}} \
+       -font font_ui
 .mbar.repository add separator
 
 if {!$single_commit} {
+       .mbar.repository add command -label {Database Statistics} \
+               -command do_stats \
+               -font font_ui
+
        .mbar.repository add command -label {Compress Database} \
                -command do_gc \
                -font font_ui
@@ -3093,6 +4274,7 @@ if {!$single_commit} {
 
        .mbar.branch add command -label {Create...} \
                -command do_create_branch \
+               -accelerator $M1T-N \
                -font font_ui
        lappend disable_on_lock [list .mbar.branch entryconf \
                [.mbar.branch index last] -state]
@@ -3174,14 +4356,6 @@ lappend disable_on_lock \
 lappend disable_on_lock \
        [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
-# -- Transport menus
-#
-if {!$single_commit} {
-       menu .mbar.fetch
-       menu .mbar.pull
-       menu .mbar.push
-}
-
 if {[is_MacOSX]} {
        # -- Apple Menu (Mac OS X only)
        #
@@ -3262,46 +4436,76 @@ pack .branch.l1 -side left
 pack .branch.cb -side left -fill x
 pack .branch -side top -fill x
 
+if {!$single_commit} {
+       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
 panedwindow .vpane.files -orient horizontal
-.vpane add .vpane.files -sticky nsew -height 100 -width 400
+.vpane add .vpane.files -sticky nsew -height 100 -width 200
 pack .vpane -anchor n -side top -fill both -expand 1
 
 # -- Index File List
 #
-frame .vpane.files.index -height 100 -width 400
+frame .vpane.files.index -height 100 -width 200
 label .vpane.files.index.title -text {Changes To Be Committed} \
        -background green \
        -font font_ui
 text $ui_index -background white -borderwidth 0 \
-       -width 40 -height 10 \
+       -width 20 -height 10 \
+       -wrap none \
        -font font_ui \
        -cursor $cursor_ptr \
-       -yscrollcommand {.vpane.files.index.sb set} \
+       -xscrollcommand {.vpane.files.index.sx set} \
+       -yscrollcommand {.vpane.files.index.sy set} \
        -state disabled
-scrollbar .vpane.files.index.sb -command [list $ui_index yview]
+scrollbar .vpane.files.index.sx -orient h -command [list $ui_index xview]
+scrollbar .vpane.files.index.sy -orient v -command [list $ui_index yview]
 pack .vpane.files.index.title -side top -fill x
-pack .vpane.files.index.sb -side right -fill y
+pack .vpane.files.index.sx -side bottom -fill x
+pack .vpane.files.index.sy -side right -fill y
 pack $ui_index -side left -fill both -expand 1
 .vpane.files add .vpane.files.index -sticky nsew
 
 # -- Working Directory File List
 #
-frame .vpane.files.workdir -height 100 -width 100
+frame .vpane.files.workdir -height 100 -width 200
 label .vpane.files.workdir.title -text {Changed But Not Updated} \
        -background red \
        -font font_ui
 text $ui_workdir -background white -borderwidth 0 \
-       -width 40 -height 10 \
+       -width 20 -height 10 \
+       -wrap none \
        -font font_ui \
        -cursor $cursor_ptr \
-       -yscrollcommand {.vpane.files.workdir.sb set} \
+       -xscrollcommand {.vpane.files.workdir.sx set} \
+       -yscrollcommand {.vpane.files.workdir.sy set} \
        -state disabled
-scrollbar .vpane.files.workdir.sb -command [list $ui_workdir yview]
+scrollbar .vpane.files.workdir.sx -orient h -command [list $ui_workdir xview]
+scrollbar .vpane.files.workdir.sy -orient v -command [list $ui_workdir yview]
 pack .vpane.files.workdir.title -side top -fill x
-pack .vpane.files.workdir.sb -side right -fill y
+pack .vpane.files.workdir.sx -side bottom -fill x
+pack .vpane.files.workdir.sy -side right -fill y
 pack $ui_workdir -side left -fill both -expand 1
 .vpane.files add .vpane.files.workdir -sticky nsew
 
@@ -3320,7 +4524,7 @@ frame .vpane.lower.commarea
 frame .vpane.lower.diff -relief sunken -borderwidth 1
 pack .vpane.lower.commarea -side top -fill x
 pack .vpane.lower.diff -side bottom -fill both -expand 1
-.vpane add .vpane.lower -stick nsew
+.vpane add .vpane.lower -sticky nsew
 
 # -- Commit Area Buttons
 #
@@ -3440,7 +4644,7 @@ $ctxm add separator
 $ctxm add command \
        -label {Select All} \
        -font font_ui \
-       -command {$ui_comm tag add sel 0.0 end}
+       -command {focus $ui_comm;$ui_comm tag add sel 0.0 end}
 $ctxm add command \
        -label {Copy All} \
        -font font_ui \
@@ -3458,17 +4662,18 @@ bind_button3 $ui_comm "tk_popup $ctxm %X %Y"
 
 # -- Diff Header
 #
-set current_diff {}
+set current_diff_path {}
+set current_diff_side {}
 set diff_actions [list]
-proc trace_current_diff {varname args} {
-       global current_diff diff_actions file_states
-       if {$current_diff eq {}} {
+proc trace_current_diff_path {varname args} {
+       global current_diff_path diff_actions file_states
+       if {$current_diff_path eq {}} {
                set s {}
                set f {}
                set p {}
                set o disabled
        } else {
-               set p $current_diff
+               set p $current_diff_path
                set s [mapdesc [lindex $file_states($p) 0] $p]
                set f {File:}
                set p [escape_path $p]
@@ -3482,7 +4687,7 @@ proc trace_current_diff {varname args} {
                uplevel #0 $w $o
        }
 }
-trace add variable current_diff write trace_current_diff
+trace add variable current_diff_path write trace_current_diff_path
 
 frame .vpane.lower.diff.header -background orange
 label .vpane.lower.diff.header.status \
@@ -3514,7 +4719,7 @@ $ctxm add command \
                clipboard append \
                        -format STRING \
                        -type STRING \
-                       -- $current_diff
+                       -- $current_diff_path
        }
 lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 bind_button3 .vpane.lower.diff.header.path "tk_popup $ctxm %X %Y"
@@ -3539,22 +4744,47 @@ pack $ui_diff -side left -fill both -expand 1
 pack .vpane.lower.diff.header -side top -fill x
 pack .vpane.lower.diff.body -side bottom -fill both -expand 1
 
-$ui_diff tag conf d_@ -font font_diffbold
-$ui_diff tag conf d_+  -foreground blue
-$ui_diff tag conf d_-  -foreground red
+$ui_diff tag conf d_cr -elide true
+$ui_diff tag conf d_@ -foreground blue -font font_diffbold
+$ui_diff tag conf d_+ -foreground {#00a000}
+$ui_diff tag conf d_- -foreground red
+
 $ui_diff tag conf d_++ -foreground {#00a000}
-$ui_diff tag conf d_-- -foreground {#a000a0}
-$ui_diff tag conf d_+- \
+$ui_diff tag conf d_-- -foreground red
+$ui_diff tag conf d_+s \
+       -foreground {#00a000} \
+       -background {#e2effa}
+$ui_diff tag conf d_-s \
+       -foreground red \
+       -background {#e2effa}
+$ui_diff tag conf d_s+ \
+       -foreground {#00a000} \
+       -background ivory1
+$ui_diff tag conf d_s- \
        -foreground red \
-       -background {light goldenrod yellow}
-$ui_diff tag conf d_-+ \
-       -foreground blue \
-       -background azure2
+       -background ivory1
+
+$ui_diff tag conf d<<<<<<< \
+       -foreground orange \
+       -font font_diffbold
+$ui_diff tag conf d======= \
+       -foreground orange \
+       -font font_diffbold
+$ui_diff tag conf d>>>>>>> \
+       -foreground orange \
+       -font font_diffbold
+
+$ui_diff tag raise sel
 
 # -- Diff Body Context Menu
 #
 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 \
@@ -3563,7 +4793,7 @@ lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
 $ctxm add command \
        -label {Select All} \
        -font font_ui \
-       -command {$ui_diff tag add sel 0.0 end}
+       -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} \
@@ -3575,6 +4805,13 @@ $ctxm add command \
        }
 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 \
@@ -3606,7 +4843,17 @@ $ctxm add separator
 $ctxm add command -label {Options...} \
        -font font_ui \
        -command do_options
-bind_button3 $ui_diff "tk_popup $ctxm %X %Y"
+bind_button3 $ui_diff "
+       set cursorX %x
+       set cursorY %y
+       if {\$ui_index eq \$current_diff_side} {
+               $ctxm entryconf $ui_diff_applyhunk -label {Unstage Hunk From Commit}
+       } else {
+               $ctxm entryconf $ui_diff_applyhunk -label {Stage Hunk For Commit}
+       }
+       tk_popup $ctxm %X %Y
+"
+unset ui_diff_applyhunk
 
 # -- Status Bar
 #
@@ -3659,6 +4906,12 @@ 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 $ui_diff <Button-1>   {focus %W}
+
+if {!$single_commit} {
+       bind . <$M1B-Key-n> do_create_branch
+       bind . <$M1B-Key-N> do_create_branch
+}
 
 bind .   <Destroy> do_quit
 bind all <Key-F5> do_rescan
@@ -3689,7 +4942,7 @@ set MERGE_HEAD [list]
 set commit_type {}
 set empty_tree {}
 set current_branch {}
-set current_diff {}
+set current_diff_path {}
 set selected_commit_type new
 
 wm title . "[appname] ([file normalize [file dirname [gitdir]]])"
@@ -3756,10 +5009,9 @@ if {!$single_commit} {
        load_all_remotes
        load_all_heads
 
-       populate_branch_menu .mbar.branch
-       populate_fetch_menu .mbar.fetch
-       populate_pull_menu .mbar.pull
-       populate_push_menu .mbar.push
+       populate_branch_menu
+       populate_fetch_menu
+       populate_push_menu
 }
 
 # -- Only suggest a gc run if we are going to stay running.