git-gui: Clear undo/redo stack when loading a message file from disk.
[gitweb.git] / git-gui
diff --git a/git-gui b/git-gui
index d74509a20b6ccfad182f4efb10a656c81d901cef..540d56397a86c28fd78fb0fc01f31480f3f82353 100755 (executable)
--- a/git-gui
+++ b/git-gui
@@ -7,34 +7,163 @@ exec wish "$0" -- "$@"
 # and distributed under the terms of the GNU General Public Licence,
 # either version 2, or (at your option) any later version.
 
+######################################################################
+##
+## config
+
+proc load_repo_config {} {
+       global repo_config
+       global cfg_trust_mtime
+
+       array unset repo_config
+       catch {
+               set fd_rc [open "| git repo-config --list" r]
+               while {[gets $fd_rc line] >= 0} {
+                       if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
+                               lappend repo_config($name) $value
+                       }
+               }
+               close $fd_rc
+       }
+
+       if {[catch {set cfg_trust_mtime \
+                       [lindex $repo_config(gui.trustmtime) 0]
+               }]} {
+               set cfg_trust_mtime false
+       }
+}
+
+proc save_my_config {} {
+       global repo_config
+       global cfg_trust_mtime
+
+       if {[catch {set rc_trustMTime $repo_config(gui.trustmtime)}]} {
+               set rc_trustMTime [list false]
+       }
+       if {$cfg_trust_mtime != [lindex $rc_trustMTime 0]} {
+               exec git repo-config gui.trustMTime $cfg_trust_mtime
+               set repo_config(gui.trustmtime) [list $cfg_trust_mtime]
+       }
+
+       set cfg_geometry [list \
+               [wm geometry .] \
+               [.vpane sash coord 0] \
+               [.vpane.files sash coord 0] \
+               ]
+       if {[catch {set rc_geometry $repo_config(gui.geometry)}]} {
+               set rc_geometry [list [list]]
+       }
+       if {$cfg_geometry != [lindex $rc_geometry 0]} {
+               exec git repo-config gui.geometry $cfg_geometry
+               set repo_config(gui.geometry) [list $cfg_geometry]
+       }
+}
 
 ######################################################################
 ##
-## status
+## repository setup
+
+set appname [lindex [file split $argv0] end]
+set gitdir {}
+set GIT_COMMITTER_IDENT {}
 
+if {[catch {set cdup [exec git rev-parse --show-cdup]} err]} {
+       show_msg {} . "Cannot find the git directory: $err"
+       exit 1
+}
+if {$cdup != ""} {
+       cd $cdup
+}
+unset cdup
+
+if {[catch {set gitdir [exec git rev-parse --git-dir]} err]} {
+       show_msg {} . "Cannot find the git directory: $err"
+       exit 1
+}
+
+if {$appname == {git-citool}} {
+       set single_commit 1
+}
+
+load_repo_config
+
+######################################################################
+##
+## task management
+
+set single_commit 0
 set status_active 0
 set diff_active 0
-set checkin_active 0
+set update_active 0
+set commit_active 0
 set update_index_fd {}
 
-proc is_busy {} {
-       global status_active diff_active checkin_active update_index_fd
+set disable_on_lock [list]
+set index_lock_type none
+
+set HEAD {}
+set PARENT {}
+set commit_type {}
+
+proc lock_index {type} {
+       global index_lock_type disable_on_lock
 
-       if {$status_active > 0
-               || $diff_active
-               || $checkin_active
-               || $update_index_fd != {}} {
+       if {$index_lock_type == {none}} {
+               set index_lock_type $type
+               foreach w $disable_on_lock {
+                       uplevel #0 $w disabled
+               }
+               return 1
+       } elseif {$index_lock_type == {begin-update} && $type == {update}} {
+               set index_lock_type $type
                return 1
        }
        return 0
 }
 
-proc update_status {} {
-       global gitdir HEAD commit_type
+proc unlock_index {} {
+       global index_lock_type disable_on_lock
+
+       set index_lock_type none
+       foreach w $disable_on_lock {
+               uplevel #0 $w normal
+       }
+}
+
+######################################################################
+##
+## status
+
+proc repository_state {hdvar ctvar} {
+       global gitdir
+       upvar $hdvar hd $ctvar ct
+
+       if {[catch {set hd [exec git rev-parse --verify HEAD]}]} {
+               set ct initial
+       } elseif {[file exists [file join $gitdir MERGE_HEAD]]} {
+               set ct merge
+       } else {
+               set ct normal
+       }
+}
+
+proc update_status {{final Ready.}} {
+       global HEAD PARENT commit_type
        global ui_index ui_other ui_status_value ui_comm
        global status_active file_states
+       global cfg_trust_mtime
+
+       if {$status_active || ![lock_index read]} return
 
-       if {[is_busy]} return
+       repository_state new_HEAD new_type
+       if {$commit_type == {amend} 
+               && $new_type == {normal}
+               && $new_HEAD == $HEAD} {
+       } else {
+               set HEAD $new_HEAD
+               set PARENT $new_HEAD
+               set commit_type $new_type
+       }
 
        array unset file_states
        foreach w [list $ui_index $ui_other] {
@@ -43,36 +172,38 @@ proc update_status {} {
                $w conf -state disabled
        }
 
-       if {[catch {set HEAD [exec git rev-parse --verify HEAD]}]} {
-               set commit_type initial
-       } else {
-               set commit_type normal
-       }
-
        if {![$ui_comm edit modified]
-           || [string trim [$ui_comm get 0.0 end]] == {}} {
+               || [string trim [$ui_comm get 0.0 end]] == {}} {
                if {[load_message GITGUI_MSG]} {
                } elseif {[load_message MERGE_MSG]} {
                } elseif {[load_message SQUASH_MSG]} {
                }
                $ui_comm edit modified false
+               $ui_comm edit reset
        }
 
-       set status_active 1
-       set ui_status_value {Refreshing file status...}
-       set fd_rf [open "| git update-index -q --unmerged --refresh" r]
-       fconfigure $fd_rf -blocking 0 -translation binary
-       fileevent $fd_rf readable [list read_refresh $fd_rf]
+       if {$cfg_trust_mtime == {true}} {
+               update_status_stage2 {} $final
+       } else {
+               set status_active 1
+               set ui_status_value {Refreshing file status...}
+               set fd_rf [open "| git update-index -q --unmerged --refresh" r]
+               fconfigure $fd_rf -blocking 0 -translation binary
+               fileevent $fd_rf readable [list update_status_stage2 $fd_rf $final]
+       }
 }
 
-proc read_refresh {fd} {
-       global gitdir HEAD commit_type
+proc update_status_stage2 {fd final} {
+       global gitdir PARENT commit_type
        global ui_index ui_other ui_status_value ui_comm
        global status_active file_states
+       global buf_rdi buf_rdf buf_rlo
 
-       read $fd
-       if {![eof $fd]} return
-       close $fd
+       if {$fd != {}} {
+               read $fd
+               if {![eof $fd]} return
+               close $fd
+       }
 
        set ls_others [list | git ls-files --others -z \
                --exclude-per-directory=.gitignore]
@@ -81,29 +212,33 @@ proc read_refresh {fd} {
                lappend ls_others "--exclude-from=$info_exclude"
        }
 
+       set buf_rdi {}
+       set buf_rdf {}
+       set buf_rlo {}
+
        set status_active 3
        set ui_status_value {Scanning for modified files ...}
-       set fd_di [open "| git diff-index --cached -z $HEAD" r]
+       set fd_di [open "| git diff-index --cached -z $PARENT" r]
        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
-       fileevent $fd_di readable [list read_diff_index $fd_di]
-       fileevent $fd_df readable [list read_diff_files $fd_df]
-       fileevent $fd_lo readable [list read_ls_others $fd_lo]
+       fileevent $fd_di readable [list read_diff_index $fd_di $final]
+       fileevent $fd_df readable [list read_diff_files $fd_df $final]
+       fileevent $fd_lo readable [list read_ls_others $fd_lo $final]
 }
 
 proc load_message {file} {
        global gitdir ui_comm
 
        set f [file join $gitdir $file]
-       if {[file exists $f]} {
+       if {[file isfile $f]} {
                if {[catch {set fd [open $f r]}]} {
                        return 0
                }
-               set content [read $fd]
+               set content [string trim [read $fd]]
                close $fd
                $ui_comm delete 0.0 end
                $ui_comm insert end $content
@@ -112,35 +247,65 @@ proc load_message {file} {
        return 0
 }
 
-proc read_diff_index {fd} {
+proc read_diff_index {fd final} {
        global buf_rdi
 
        append buf_rdi [read $fd]
-       set pck [split $buf_rdi "\0"]
-       set buf_rdi [lindex $pck end]
-       foreach {m p} [lrange $pck 0 end-1] {
-               if {$m != {} && $p != {}} {
-                       display_file $p [string index $m end]_
-               }
+       set c 0
+       set n [string length $buf_rdi]
+       while {$c < $n} {
+               set z1 [string first "\0" $buf_rdi $c]
+               if {$z1 == -1} break
+               incr z1
+               set z2 [string first "\0" $buf_rdi $z1]
+               if {$z2 == -1} break
+
+               set c $z2
+               incr z2 -1
+               display_file \
+                       [string range $buf_rdi $z1 $z2] \
+                       [string index $buf_rdi [expr $z1 - 2]]_
+               incr c
+       }
+       if {$c < $n} {
+               set buf_rdi [string range $buf_rdi $c end]
+       } else {
+               set buf_rdi {}
        }
-       status_eof $fd buf_rdi
+
+       status_eof $fd buf_rdi $final
 }
 
-proc read_diff_files {fd} {
+proc read_diff_files {fd final} {
        global buf_rdf
 
        append buf_rdf [read $fd]
-       set pck [split $buf_rdf "\0"]
-       set buf_rdf [lindex $pck end]
-       foreach {m p} [lrange $pck 0 end-1] {
-               if {$m != {} && $p != {}} {
-                       display_file $p _[string index $m end]
-               }
+       set c 0
+       set n [string length $buf_rdf]
+       while {$c < $n} {
+               set z1 [string first "\0" $buf_rdf $c]
+               if {$z1 == -1} break
+               incr z1
+               set z2 [string first "\0" $buf_rdf $z1]
+               if {$z2 == -1} break
+
+               set c $z2
+               incr z2 -1
+               display_file \
+                       [string range $buf_rdf $z1 $z2] \
+                       _[string index $buf_rdf [expr $z1 - 2]]
+               incr c
        }
-       status_eof $fd buf_rdf
+       if {$c < $n} {
+               set buf_rdf [string range $buf_rdf $c end]
+       } else {
+               set buf_rdf {}
+       }
+
+       status_eof $fd buf_rdf $final
 }
 
-proc read_ls_others {fd} {
+proc read_ls_others {fd final} {
        global buf_rlo
 
        append buf_rlo [read $fd]
@@ -149,20 +314,28 @@ proc read_ls_others {fd} {
        foreach p [lrange $pck 0 end-1] {
                display_file $p _O
        }
-       status_eof $fd buf_rlo
+       status_eof $fd buf_rlo $final
 }
 
-proc status_eof {fd buf} {
+proc status_eof {fd buf final} {
        global status_active $buf
-       global ui_fname_value ui_status_value
+       global ui_fname_value ui_status_value file_states
 
        if {[eof $fd]} {
                set $buf {}
                close $fd
+
                if {[incr status_active -1] == 0} {
-                       set ui_status_value {Ready.}
-                       if {$ui_fname_value != {}} {
+                       unlock_index
+
+                       display_all_files
+                       set ui_status_value $final
+
+                       if {$ui_fname_value != {} && [array names file_states \
+                               -exact $ui_fname_value] != {}}  {
                                show_diff $ui_fname_value
+                       } else {
+                               clear_diff
                        }
                }
        }
@@ -183,10 +356,10 @@ proc clear_diff {} {
 }
 
 proc show_diff {path} {
-       global file_states HEAD diff_3way diff_active
+       global file_states PARENT diff_3way diff_active
        global ui_diff ui_fname_value ui_fstatus_value ui_status_value
 
-       if {[is_busy]} return
+       if {$diff_active || ![lock_index read]} return
 
        clear_diff
        set s $file_states($path)
@@ -197,12 +370,12 @@ proc show_diff {path} {
        set ui_fstatus_value [mapdesc $m $path]
        set ui_status_value "Loading diff of $path..."
 
-       set cmd [list | git diff-index -p $HEAD -- $path]
+       set cmd [list | git diff-index -p $PARENT -- $path]
        switch $m {
        AM {
        }
        MM {
-               set cmd [list | git diff-index -p -c $HEAD $path]
+               set cmd [list | git diff-index -p -c $PARENT $path]
        }
        _O {
                if {[catch {
@@ -211,6 +384,7 @@ proc show_diff {path} {
                                close $fd
                        } err ]} {
                        set diff_active 0
+                       unlock_index
                        set ui_status_value "Unable to display $path"
                        error_popup "Error loading file:\n$err"
                        return
@@ -218,18 +392,22 @@ proc show_diff {path} {
                $ui_diff conf -state normal
                $ui_diff insert end $content
                $ui_diff conf -state disabled
+               set diff_active 0
+               unlock_index
+               set ui_status_value {Ready.}
                return
        }
        }
 
        if {[catch {set fd [open $cmd r]} err]} {
                set diff_active 0
+               unlock_index
                set ui_status_value "Unable to display $path"
                error_popup "Error loading diff:\n$err"
                return
        }
 
-       fconfigure $fd -blocking 0 -translation binary
+       fconfigure $fd -blocking 0 -translation auto
        fileevent $fd readable [list read_diff $fd]
 }
 
@@ -237,6 +415,10 @@ proc read_diff {fd} {
        global ui_diff ui_status_value diff_3way diff_active
 
        while {[gets $fd line] >= 0} {
+               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 index* $line]} {
                        if {[string first , $line] >= 0} {
                                set diff_3way 1
@@ -275,20 +457,348 @@ proc read_diff {fd} {
        if {[eof $fd]} {
                close $fd
                set diff_active 0
+               unlock_index
                set ui_status_value {Ready.}
        }
 }
 
+######################################################################
+##
+## commit
+
+proc load_last_commit {} {
+       global HEAD PARENT commit_type ui_comm
+
+       if {$commit_type == {amend}} return
+       if {$commit_type != {normal}} {
+               error_popup "Can't amend a $commit_type commit."
+               return
+       }
+
+       set msg {}
+       set parent {}
+       set parent_count 0
+       if {[catch {
+                       set fd [open "| git cat-file commit $HEAD" r]
+                       while {[gets $fd line] > 0} {
+                               if {[string match {parent *} $line]} {
+                                       set parent [string range $line 7 end]
+                                       incr parent_count
+                               }
+                       }
+                       set msg [string trim [read $fd]]
+                       close $fd
+               } err]} {
+               error_popup "Error loading commit data for amend:\n$err"
+               return
+       }
+
+       if {$parent_count == 0} {
+               set commit_type amend
+               set HEAD {}
+               set PARENT {}
+               update_status
+       } elseif {$parent_count == 1} {
+               set commit_type amend
+               set PARENT $parent
+               $ui_comm delete 0.0 end
+               $ui_comm insert end $msg
+               $ui_comm edit modified false
+               $ui_comm edit reset
+               update_status
+       } else {
+               error_popup {You can't amend a merge commit.}
+               return
+       }
+}
+
+proc commit_tree {} {
+       global tcl_platform HEAD gitdir commit_type file_states
+       global commit_active ui_status_value
+       global ui_comm
+
+       if {$commit_active || ![lock_index update]} return
+
+       # -- Our in memory state should match the repository.
+       #
+       repository_state curHEAD cur_type
+       if {$commit_type == {amend} 
+               && $cur_type == {normal}
+               && $curHEAD == $HEAD} {
+       } elseif {$commit_type != $cur_type || $HEAD != $curHEAD} {
+               error_popup {Last scanned state does not match repository state.
+
+Its highly likely that another Git program modified the
+repository since our last scan.  A rescan is required
+before committing.
+}
+               unlock_index
+               update_status
+               return
+       }
+
+       # -- At least one file should differ in the index.
+       #
+       set files_ready 0
+       foreach path [array names file_states] {
+               set s $file_states($path)
+               switch -glob -- [lindex $s 0] {
+               _* {continue}
+               A* -
+               D* -
+               M* {set files_ready 1; break}
+               U* {
+                       error_popup "Unmerged files cannot be committed.
+
+File $path has merge conflicts.
+You must resolve them and include the file before committing.
+"
+                       unlock_index
+                       return
+               }
+               default {
+                       error_popup "Unknown file state [lindex $s 0] detected.
+
+File $path cannot be committed by this program.
+"
+               }
+               }
+       }
+       if {!$files_ready} {
+               error_popup {No included files to commit.
+
+You must include at least 1 file before you can commit.
+}
+               unlock_index
+               return
+       }
+
+       # -- A message is required.
+       #
+       set msg [string trim [$ui_comm get 1.0 end]]
+       if {$msg == {}} {
+               error_popup {Please supply a commit message.
+
+A good commit message has the following format:
+
+- First line: Describe in one sentance what you did.
+- Second line: Blank
+- Remaining lines: Describe why this change is good.
+}
+               unlock_index
+               return
+       }
+
+       # -- Ask the pre-commit hook for the go-ahead.
+       #
+       set pchook [file join $gitdir hooks pre-commit]
+       if {$tcl_platform(platform) == {windows} && [file isfile $pchook]} {
+               set pchook [list sh -c \
+                       "if test -x \"$pchook\"; then exec \"$pchook\"; fi"]
+       } elseif {[file executable $pchook]} {
+               set pchook [list $pchook]
+       } else {
+               set pchook {}
+       }
+       if {$pchook != {} && [catch {eval exec $pchook} err]} {
+               hook_failed_popup pre-commit $err
+               unlock_index
+               return
+       }
+
+       # -- Write the tree in the background.
+       #
+       set commit_active 1
+       set ui_status_value {Committing changes...}
+
+       set fd_wt [open "| git write-tree" r]
+       fileevent $fd_wt readable [list commit_stage2 $fd_wt $curHEAD $msg]
+}
+
+proc commit_stage2 {fd_wt curHEAD msg} {
+       global single_commit gitdir PARENT commit_type
+       global commit_active ui_status_value ui_comm
+
+       gets $fd_wt tree_id
+       close $fd_wt
+
+       if {$tree_id == {}} {
+               error_popup "write-tree failed"
+               set commit_active 0
+               set ui_status_value {Commit failed.}
+               unlock_index
+               return
+       }
+
+       # -- Create the commit.
+       #
+       set cmd [list git commit-tree $tree_id]
+       if {$PARENT != {}} {
+               lappend cmd -p $PARENT
+       }
+       if {$commit_type == {merge}} {
+               if {[catch {
+                               set fd_mh [open [file join $gitdir MERGE_HEAD] r]
+                               while {[gets $fd_mh merge_head] >= 0} {
+                                       lappend cmd -p $merge_head
+                               }
+                               close $fd_mh
+                       } err]} {
+                       error_popup "Loading MERGE_HEADs failed:\n$err"
+                       set commit_active 0
+                       set ui_status_value {Commit failed.}
+                       unlock_index
+                       return
+               }
+       }
+       if {$PARENT == {}} {
+               # git commit-tree writes to stderr during initial commit.
+               lappend cmd 2>/dev/null
+       }
+       lappend cmd << $msg
+       if {[catch {set cmt_id [eval exec $cmd]} err]} {
+               error_popup "commit-tree failed:\n$err"
+               set commit_active 0
+               set ui_status_value {Commit failed.}
+               unlock_index
+               return
+       }
+
+       # -- Update the HEAD ref.
+       #
+       set reflogm commit
+       if {$commit_type != {normal}} {
+               append reflogm " ($commit_type)"
+       }
+       set i [string first "\n" $msg]
+       if {$i >= 0} {
+               append reflogm {: } [string range $msg 0 [expr $i - 1]]
+       } else {
+               append reflogm {: } $msg
+       }
+       set cmd [list git update-ref -m $reflogm HEAD $cmt_id $curHEAD]
+       if {[catch {eval exec $cmd} err]} {
+               error_popup "update-ref failed:\n$err"
+               set commit_active 0
+               set ui_status_value {Commit failed.}
+               unlock_index
+               return
+       }
+
+       # -- Cleanup after ourselves.
+       #
+       catch {file delete [file join $gitdir MERGE_HEAD]}
+       catch {file delete [file join $gitdir MERGE_MSG]}
+       catch {file delete [file join $gitdir SQUASH_MSG]}
+       catch {file delete [file join $gitdir GITGUI_MSG]}
+
+       # -- Let rerere do its thing.
+       #
+       if {[file isdirectory [file join $gitdir rr-cache]]} {
+               catch {exec git rerere}
+       }
+
+       $ui_comm delete 0.0 end
+       $ui_comm edit modified false
+       $ui_comm edit reset
+
+       if {$single_commit} do_quit
+
+       set commit_type {}
+       set commit_active 0
+       set HEAD $cmt_id
+       set PARENT $cmt_id
+       unlock_index
+       update_status "Changes committed as [string range $cmt_id 0 7]."
+}
+
+######################################################################
+##
+## fetch pull push
+
+proc fetch_from {remote} {
+       set w [new_console "fetch $remote" \
+               "Fetching new changes from $remote"]
+       set cmd [list git fetch]
+       lappend cmd $remote
+       console_exec $w $cmd
+}
+
+proc pull_remote {remote branch} {
+       global HEAD commit_type
+       global file_states
+
+       if {![lock_index update]} return
+
+       # -- Our in memory state should match the repository.
+       #
+       repository_state curHEAD cur_type
+       if {$commit_type != $cur_type || $HEAD != $curHEAD} {
+               error_popup {Last scanned state does not match repository state.
+
+Its highly likely that another Git program modified the
+repository since our last scan.  A rescan is required
+before a pull can be started.
+}
+               unlock_index
+               update_status
+               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 would be unable to recover from an incorrect merge.
+
+Commit or throw away 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]
+       lappend cmd $remote
+       lappend cmd $branch
+       console_exec $w $cmd [list post_pull_remote $remote $branch]
+}
+
+proc post_pull_remote {remote branch success} {
+       global HEAD PARENT commit_type
+       global ui_status_value
+
+       unlock_index
+       if {$success} {
+               repository_state HEAD commit_type
+               set PARENT $HEAD
+               set $ui_status_value {Ready.}
+       } else {
+               update_status "Conflicts detected while pulling $branch from $remote."
+       }
+}
+
+proc push_to {remote} {
+       set w [new_console "push $remote" \
+               "Pushing changes to $remote"]
+       set cmd [list git push]
+       lappend cmd $remote
+       console_exec $w $cmd
+}
+
 ######################################################################
 ##
 ## ui helpers
 
 proc mapcol {state path} {
-       global all_cols
+       global all_cols ui_other
 
        if {[catch {set r $all_cols($state)}]} {
                puts "error: no column for state={$state} $path"
-               return o
+               return $ui_other
        }
        return $r
 }
@@ -334,85 +844,100 @@ proc bsearch {w path} {
        return -[expr $lo + 1]
 }
 
-proc merge_state {path state} {
-       global file_states
+set next_icon_id 0
+
+proc merge_state {path new_state} {
+       global file_states next_icon_id
+
+       set s0 [string index $new_state 0]
+       set s1 [string index $new_state 1]
 
-       if {[array names file_states -exact $path] == {}}  {
-               set o __
-               set s [list $o none none]
+       if {[catch {set info $file_states($path)}]} {
+               set state __
+               set icon n[incr next_icon_id]
        } else {
-               set s $file_states($path)
-               set o [lindex $s 0]
+               set state [lindex $info 0]
+               set icon [lindex $info 1]
        }
 
-       set m [lindex $s 0]
-       if {[string index $state 0] == "_"} {
-               set state [string index $m 0][string index $state 1]
-       } elseif {[string index $state 0] == "*"} {
-               set state _[string index $state 1]
+       if {$s0 == {_}} {
+               set s0 [string index $state 0]
+       } elseif {$s0 == {*}} {
+               set s0 _
        }
 
-       if {[string index $state 1] == "_"} {
-               set state [string index $state 0][string index $m 1]
-       } elseif {[string index $state 1] == "*"} {
-               set state [string index $state 0]_
+       if {$s1 == {_}} {
+               set s1 [string index $state 1]
+       } elseif {$s1 == {*}} {
+               set s_
        }
 
-       set file_states($path) [lreplace $s 0 0 $state]
-       return $o
+       set file_states($path) [list $s0$s1 $icon]
+       return $state
 }
 
 proc display_file {path state} {
-       global ui_index ui_other file_states
+       global ui_index ui_other file_states status_active
 
        set old_m [merge_state $path $state]
-       set s $file_states($path)
-       set m [lindex $s 0]
+       if {$status_active} return
 
-       if {[mapcol $m $path] == "o"} {
-               set ii 1
-               set ai 2
-               set iw $ui_index
-               set aw $ui_other
-       } else {
-               set ii 2
-               set ai 1
-               set iw $ui_other
-               set aw $ui_index
-       }
+       set s $file_states($path)
+       set new_m [lindex $s 0]
+       set new_w [mapcol $new_m $path] 
+       set old_w [mapcol $old_m $path]
+       set new_icon [mapicon $new_m $path]
 
-       set d [lindex $s $ii]
-       if {$d != "none"} {
-               set lno [bsearch $iw $path]
+       if {$new_w != $old_w} {
+               set lno [bsearch $old_w $path]
                if {$lno >= 0} {
                        incr lno
-                       $iw conf -state normal
-                       $iw delete $lno.0 [expr $lno + 1].0
-                       $iw conf -state disabled
-                       set s [lreplace $s $ii $ii none]
+                       $old_w conf -state normal
+                       $old_w delete $lno.0 [expr $lno + 1].0
+                       $old_w conf -state disabled
                }
+
+               set lno [expr abs([bsearch $new_w $path] + 1) + 1]
+               $new_w conf -state normal
+               $new_w image create $lno.0 \
+                       -align center -padx 5 -pady 1 \
+                       -name [lindex $s 1] \
+                       -image $new_icon
+               $new_w insert $lno.1 "$path\n"
+               $new_w conf -state disabled
+       } elseif {$new_icon != [mapicon $old_m $path]} {
+               $new_w conf -state normal
+               $new_w image conf [lindex $s 1] -image $new_icon
+               $new_w conf -state disabled
        }
+}
+
+proc display_all_files {} {
+       global ui_index ui_other file_states
+
+       $ui_index conf -state normal
+       $ui_other conf -state normal
 
-       set d [lindex $s $ai]
-       if {$d == "none"} {
-               set lno [expr abs([bsearch $aw $path] + 1) + 1]
-               $aw conf -state normal
-               set ico [$aw image create $lno.0 \
+       foreach path [lsort [array names file_states]] {
+               set s $file_states($path)
+               set m [lindex $s 0]
+               set w [mapcol $m $path]
+               $w image create end \
                        -align center -padx 5 -pady 1 \
-                       -image [mapicon $m $path]]
-               $aw insert $lno.1 "$path\n"
-               $aw conf -state disabled
-               set file_states($path) [lreplace $s $ai $ai [list $ico]]
-       } elseif {[mapicon $m $path] != [mapicon $old_m $path]} {
-               set ico [lindex $d 0]
-               $aw image conf $ico -image [mapicon $m $path]
+                       -name [lindex $s 1] \
+                       -image [mapicon $m $path]
+               $w insert end "$path\n"
        }
+
+       $ui_index conf -state disabled
+       $ui_other conf -state disabled
 }
 
 proc with_update_index {body} {
        global update_index_fd
 
        if {$update_index_fd == {}} {
+               if {![lock_index update]} return
                set update_index_fd [open \
                        "| git update-index --add --remove -z --stdin" \
                        w]
@@ -420,6 +945,7 @@ proc with_update_index {body} {
                uplevel 1 $body
                close $update_index_fd
                set update_index_fd {}
+               unlock_index
        } else {
                uplevel 1 $body
        }
@@ -436,7 +962,7 @@ proc update_index {path} {
 }
 
 proc toggle_mode {path} {
-       global file_states
+       global file_states ui_fname_value
 
        set s $file_states($path)
        set m [lindex $s 0]
@@ -446,12 +972,88 @@ proc toggle_mode {path} {
        _O {set new A*}
        _M -
        MM {set new M*}
+       AD -
        _D {set new D*}
        default {return}
        }
 
        with_update_index {update_index $path}
        display_file $path $new
+       if {$ui_fname_value == $path} {
+               show_diff $path
+       }
+}
+
+######################################################################
+##
+## remote management
+
+proc load_all_remotes {} {
+       global gitdir all_remotes repo_config
+
+       set all_remotes [list]
+       set rm_dir [file join $gitdir remotes]
+       if {[file isdirectory $rm_dir]} {
+               set all_remotes [concat $all_remotes [glob \
+                       -types f \
+                       -tails \
+                       -nocomplain \
+                       -directory $rm_dir *]]
+       }
+
+       foreach line [array names repo_config remote.*.url] {
+               if {[regexp ^remote\.(.*)\.url\$ $line line name]} {
+                       lappend all_remotes $name
+               }
+       }
+
+       set all_remotes [lsort -unique $all_remotes]
+}
+
+proc populate_remote_menu {m pfx op} {
+       global all_remotes mainfont
+
+       foreach remote $all_remotes {
+               $m add command -label "$pfx $remote..." \
+                       -command [list $op $remote] \
+                       -font $mainfont
+       }
+}
+
+proc populate_pull_menu {m} {
+       global gitdir repo_config all_remotes mainfont disable_on_lock
+
+       foreach remote $all_remotes {
+               set rb {}
+               if {[array get repo_config remote.$remote.url] != {}} {
+                       if {[array get repo_config remote.$remote.fetch] != {}} {
+                               regexp {^([^:]+):} \
+                                       [lindex $repo_config(remote.$remote.fetch) 0] \
+                                       line rb
+                       }
+               } else {
+                       catch {
+                               set fd [open [file join $gitdir remotes $remote] r]
+                               while {[gets $fd line] >= 0} {
+                                       if {[regexp {^Pull:[ \t]*([^:]+):} $line line rb]} {
+                                               break
+                                       }
+                               }
+                               close $fd
+                       }
+               }
+
+               set rb_short $rb
+               regsub ^refs/heads/ $rb {} rb_short
+               if {$rb_short != {}} {
+                       $m add command \
+                               -label "Branch $rb_short from $remote..." \
+                               -command [list pull_remote $remote $rb] \
+                               -font $mainfont
+                       lappend disable_on_lock \
+                               [list $m entryconf [$m index last] -state]
+               }
+       }
 }
 
 ######################################################################
@@ -530,16 +1132,19 @@ static unsigned char file_merge_bits[] = {
    0xfa, 0x17, 0x02, 0x10, 0xfe, 0x1f};
 } -maskdata $filemask
 
+set ui_index .vpane.files.index.list
+set ui_other .vpane.files.other.list
 set max_status_desc 0
 foreach i {
                {__ i plain    "Unmodified"}
                {_M i mod      "Modified"}
                {M_ i fulltick "Checked in"}
-               {MM i parttick "Partially checked in"}
+               {MM i parttick "Partially included"}
 
                {_O o plain    "Untracked"}
                {A_ o fulltick "Added"}
                {AM o parttick "Partially added"}
+               {AD o question "Added (but now gone)"}
 
                {_D i question "Missing"}
                {D_ i removed  "Removed"}
@@ -552,7 +1157,11 @@ foreach i {
        if {$max_status_desc < [string length [lindex $i 3]]} {
                set max_status_desc [string length [lindex $i 3]]
        }
-       set all_cols([lindex $i 0]) [lindex $i 1]
+       if {[lindex $i 1] == {i}} {
+               set all_cols([lindex $i 0]) $ui_index
+       } else {
+               set all_cols([lindex $i 0]) $ui_other
+       }
        set all_icons([lindex $i 0]) file_[lindex $i 2]
        set all_descs([lindex $i 0]) [lindex $i 3]
 }
@@ -570,44 +1179,244 @@ proc error_popup {msg} {
 }
 
 proc show_msg {w top msg} {
-       message $w.m -text $msg -justify center -aspect 400
-       pack $w.m -side top -fill x -padx 20 -pady 20
-       button $w.ok -text OK -command "destroy $top"
-       pack $w.ok -side bottom -fill x
+       global gitdir appname mainfont
+
+       message $w.m -text $msg -justify left -aspect 400
+       pack $w.m -side top -fill x -padx 5 -pady 10
+       button $w.ok -text OK \
+               -width 15 \
+               -font $mainfont \
+               -command "destroy $top"
+       pack $w.ok -side bottom
        bind $top <Visibility> "grab $top; focus $top"
        bind $top <Key-Return> "destroy $top"
+       wm title $w "$appname ([lindex [file split \
+               [file normalize [file dirname $gitdir]]] \
+               end]): error"
        tkwait window $top
 }
 
+proc hook_failed_popup {hook msg} {
+       global gitdir mainfont difffont appname
+
+       set w .hookfail
+       toplevel $w
+       wm transient $w .
+
+       frame $w.m
+       label $w.m.l1 -text "$hook hook failed:" \
+               -anchor w \
+               -justify left \
+               -font [concat $mainfont bold]
+       text $w.m.t \
+               -background white -borderwidth 1 \
+               -relief sunken \
+               -width 80 -height 10 \
+               -font $difffont \
+               -yscrollcommand [list $w.m.sby set]
+       label $w.m.l2 \
+               -text {You must correct the above errors before committing.} \
+               -anchor w \
+               -justify left \
+               -font [concat $mainfont bold]
+       scrollbar $w.m.sby -command [list $w.m.t yview]
+       pack $w.m.l1 -side top -fill x
+       pack $w.m.l2 -side bottom -fill x
+       pack $w.m.sby -side right -fill y
+       pack $w.m.t -side left -fill both -expand 1
+       pack $w.m -side top -fill both -expand 1 -padx 5 -pady 10
+
+       $w.m.t insert 1.0 $msg
+       $w.m.t conf -state disabled
+
+       button $w.ok -text OK \
+               -width 15 \
+               -font $mainfont \
+               -command "destroy $w"
+       pack $w.ok -side bottom
+
+       bind $w <Visibility> "grab $w; focus $w"
+       bind $w <Key-Return> "destroy $w"
+       wm title $w "$appname ([lindex [file split \
+               [file normalize [file dirname $gitdir]]] \
+               end]): error"
+       tkwait window $w
+}
+
+set next_console_id 0
+
+proc new_console {short_title long_title} {
+       global next_console_id console_data
+       set w .console[incr next_console_id]
+       set console_data($w) [list $short_title $long_title]
+       return [console_init $w]
+}
+
+proc console_init {w} {
+       global console_cr console_data
+       global gitdir appname mainfont difffont
+
+       set console_cr($w) 1.0
+       toplevel $w
+       frame $w.m
+       label $w.m.l1 -text "[lindex $console_data($w) 1]:" \
+               -anchor w \
+               -justify left \
+               -font [concat $mainfont bold]
+       text $w.m.t \
+               -background white -borderwidth 1 \
+               -relief sunken \
+               -width 80 -height 10 \
+               -font $difffont \
+               -state disabled \
+               -yscrollcommand [list $w.m.sby set]
+       label $w.m.s -anchor w \
+               -justify left \
+               -font [concat $mainfont bold]
+       scrollbar $w.m.sby -command [list $w.m.t yview]
+       pack $w.m.l1 -side top -fill x
+       pack $w.m.s -side bottom -fill x
+       pack $w.m.sby -side right -fill y
+       pack $w.m.t -side left -fill both -expand 1
+       pack $w.m -side top -fill both -expand 1 -padx 5 -pady 10
+
+       button $w.ok -text {Running...} \
+               -width 15 \
+               -font $mainfont \
+               -state disabled \
+               -command "destroy $w"
+       pack $w.ok -side bottom
+
+       bind $w <Visibility> "focus $w"
+       wm title $w "$appname ([lindex [file split \
+               [file normalize [file dirname $gitdir]]] \
+               end]): [lindex $console_data($w) 0]"
+       return $w
+}
+
+proc console_exec {w cmd {after {}}} {
+       global tcl_platform
+
+       # -- Windows tosses the enviroment when we exec our child.
+       #    But most users need that so we have to relogin. :-(
+       #
+       if {$tcl_platform(platform) == {windows}} {
+               set cmd [list sh --login -c "cd \"[pwd]\" && [join $cmd { }]"]
+       }
+
+       # -- Tcl won't let us redirect both stdout and stderr to
+       #    the same pipe.  So pass it through cat...
+       #
+       set cmd [concat | $cmd |& cat]
+
+       set fd_f [open $cmd r]
+       fconfigure $fd_f -blocking 0 -translation binary
+       fileevent $fd_f readable [list console_read $w $fd_f $after]
+}
+
+proc console_read {w fd after} {
+       global console_cr console_data
+
+       set buf [read $fd]
+       if {$buf != {}} {
+               if {![winfo exists $w]} {console_init $w}
+               $w.m.t conf -state normal
+               set c 0
+               set n [string length $buf]
+               while {$c < $n} {
+                       set cr [string first "\r" $buf $c]
+                       set lf [string first "\n" $buf $c]
+                       if {$cr < 0} {set cr [expr $n + 1]}
+                       if {$lf < 0} {set lf [expr $n + 1]}
+
+                       if {$lf < $cr} {
+                               $w.m.t insert end [string range $buf $c $lf]
+                               set console_cr($w) [$w.m.t index {end -1c}]
+                               set c $lf
+                               incr c
+                       } else {
+                               $w.m.t delete $console_cr($w) end
+                               $w.m.t insert end "\n"
+                               $w.m.t insert end [string range $buf $c $cr]
+                               set c $cr
+                               incr c
+                       }
+               }
+               $w.m.t conf -state disabled
+               $w.m.t see end
+       }
+
+       fconfigure $fd -blocking 1
+       if {[eof $fd]} {
+               if {[catch {close $fd}]} {
+                       if {![winfo exists $w]} {console_init $w}
+                       $w.m.s conf -background red -text {Error: Command Failed}
+                       $w.ok conf -text Close
+                       $w.ok conf -state normal
+                       set ok 0
+               } elseif {[winfo exists $w]} {
+                       $w.m.s conf -background green -text {Success}
+                       $w.ok conf -text Close
+                       $w.ok conf -state normal
+                       set ok 1
+               }
+               array unset console_cr $w
+               array unset console_data $w
+               if {$after != {}} {
+                       uplevel #0 $after $ok
+               }
+               return
+       }
+       fconfigure $fd -blocking 0
+}
+
 ######################################################################
 ##
 ## ui commands
 
+set starting_gitk_msg {Please wait... Starting gitk...}
+
 proc do_gitk {} {
-       global tcl_platform
+       global tcl_platform ui_status_value starting_gitk_msg
+
+       set ui_status_value $starting_gitk_msg
+       after 10000 {
+               if {$ui_status_value == $starting_gitk_msg} {
+                       set ui_status_value {Ready.}
+               }
+       }
 
-    if {$tcl_platform(platform) == "windows"} {
+       if {$tcl_platform(platform) == {windows}} {
                exec sh -c gitk &
        } else {
                exec gitk &
        }
 }
 
+proc do_repack {} {
+       set w [new_console "repack" "Repacking the object database"]
+       set cmd [list git repack]
+       lappend cmd -a
+       lappend cmd -d
+       console_exec $w $cmd
+}
+
 proc do_quit {} {
        global gitdir ui_comm
 
        set save [file join $gitdir GITGUI_MSG]
-       if {[$ui_comm edit modified]
-           && [string trim [$ui_comm get 0.0 end]] != {}} {
+       set msg [string trim [$ui_comm get 0.0 end]]
+       if {[$ui_comm edit modified] && $msg != {}} {
                catch {
                        set fd [open $save w]
                        puts $fd [string trim [$ui_comm get 0.0 end]]
                        close $fd
                }
-       } elseif {[file exists $save]} {
+       } elseif {$msg == {} && [file exists $save]} {
                file delete $save
        }
 
+       save_my_config
        destroy .
 }
 
@@ -615,13 +1424,13 @@ proc do_rescan {} {
        update_status
 }
 
-proc do_checkin_all {} {
-       global checkin_active ui_status_value
+proc do_include_all {} {
+       global update_active ui_status_value
 
-       if {[is_busy]} return
+       if {$update_active || ![lock_index begin-update]} return
 
-       set checkin_active 1
-       set ui_status_value {Checking in all files...}
+       set update_active 1
+       set ui_status_value {Including all modified files...}
        after 1 {
                with_update_index {
                        foreach path [array names file_states] {
@@ -635,25 +1444,41 @@ proc do_checkin_all {} {
                                }
                        }
                }
-               set checkin_active 0
+               set update_active 0
                set ui_status_value {Ready.}
        }
 }
 
 proc do_signoff {} {
-       global ui_comm
+       global ui_comm GIT_COMMITTER_IDENT
 
-       catch {
-               set me [exec git var GIT_COMMITTER_IDENT]
-               if {[regexp {(.*) [0-9]+ [-+0-9]+$} $me me name]} {
-                       set str "Signed-off-by: $name"
-                       if {[$ui_comm get {end -1c linestart} {end -1c}] != $str} {
-                               $ui_comm insert end "\n"
-                               $ui_comm insert end $str
-                               $ui_comm see end
-                       }
+       if {$GIT_COMMITTER_IDENT == {}} {
+               if {[catch {set me [exec git var GIT_COMMITTER_IDENT]} err]} {
+                       error_popup "Unable to obtain your identity:\n$err"
+                       return
+               }
+               if {![regexp {^(.*) [0-9]+ [-+0-9]+$} \
+                       $me me GIT_COMMITTER_IDENT]} {
+                       error_popup "Invalid GIT_COMMITTER_IDENT:\n$me"
+                       return
                }
        }
+
+       set str "Signed-off-by: $GIT_COMMITTER_IDENT"
+       if {[$ui_comm get {end -1c linestart} {end -1c}] != $str} {
+               $ui_comm edit separator
+               $ui_comm insert end "\n$str"
+               $ui_comm edit separator
+               $ui_comm see end
+       }
+}
+
+proc do_amend_last {} {
+       load_last_commit
+}
+
+proc do_commit {} {
+       commit_tree
 }
 
 # shift == 1: left click
@@ -682,7 +1507,7 @@ proc unclick {w x y} {
        set path [$w get $lno.1 $lno.end]
        if {$path == {}} return
 
-       if {$col == 0 && ![is_busy]} {
+       if {$col == 0} {
                toggle_mode $path
        }
 }
@@ -695,37 +1520,99 @@ set mainfont {Helvetica 10}
 set difffont {Courier 10}
 set maincursor [. cget -cursor]
 
+switch -glob -- "$tcl_platform(platform),$tcl_platform(os)" {
+windows,*   {set M1B Control; set M1T Ctrl}
+unix,Darwin {set M1B M1; set M1T Cmd}
+default     {set M1B M1; set M1T M1}
+}
+
 # -- Menu Bar
 menu .mbar -tearoff 0
 .mbar add cascade -label Project -menu .mbar.project
+.mbar add cascade -label Edit -menu .mbar.edit
 .mbar add cascade -label Commit -menu .mbar.commit
 .mbar add cascade -label Fetch -menu .mbar.fetch
 .mbar add cascade -label Pull -menu .mbar.pull
+.mbar add cascade -label Push -menu .mbar.push
+.mbar add cascade -label Options -menu .mbar.options
 . configure -menu .mbar
 
 # -- Project Menu
 menu .mbar.project
-.mbar.project add command -label Visulize \
+.mbar.project add command -label Visualize \
        -command do_gitk \
        -font $mainfont
+.mbar.project add command -label {Repack Database} \
+       -command do_repack \
+       -font $mainfont
 .mbar.project add command -label Quit \
        -command do_quit \
+       -accelerator $M1T-Q \
+       -font $mainfont
+
+# -- Edit Menu
+#
+menu .mbar.edit
+.mbar.edit add command -label Undo \
+       -command {catch {[focus] edit undo}} \
+       -accelerator $M1T-Z \
+       -font $mainfont
+.mbar.edit add command -label Redo \
+       -command {catch {[focus] edit redo}} \
+       -accelerator $M1T-Y \
+       -font $mainfont
+.mbar.edit add separator
+.mbar.edit add command -label Cut \
+       -command {catch {tk_textCut [focus]}} \
+       -accelerator $M1T-X \
+       -font $mainfont
+.mbar.edit add command -label Copy \
+       -command {catch {tk_textCopy [focus]}} \
+       -accelerator $M1T-C \
+       -font $mainfont
+.mbar.edit add command -label Paste \
+       -command {catch {tk_textPaste [focus]; [focus] see insert}} \
+       -accelerator $M1T-V \
+       -font $mainfont
+.mbar.edit add command -label Delete \
+       -command {catch {[focus] delete sel.first sel.last}} \
+       -accelerator Del \
+       -font $mainfont
+.mbar.edit add separator
+.mbar.edit add command -label {Select All} \
+       -command {catch {[focus] tag add sel 0.0 end}} \
+       -accelerator $M1T-A \
        -font $mainfont
 
 # -- Commit Menu
 menu .mbar.commit
 .mbar.commit add command -label Rescan \
        -command do_rescan \
+       -accelerator F5 \
+       -font $mainfont
+lappend disable_on_lock \
+       [list .mbar.commit entryconf [.mbar.commit index last] -state]
+.mbar.commit add command -label {Amend Last Commit} \
+       -command do_amend_last \
        -font $mainfont
-.mbar.commit add command -label {Check-in All Files} \
-       -command do_checkin_all \
+lappend disable_on_lock \
+       [list .mbar.commit entryconf [.mbar.commit index last] -state]
+.mbar.commit add command -label {Include All Files} \
+       -command do_include_all \
+       -accelerator $M1T-I \
        -font $mainfont
+lappend disable_on_lock \
+       [list .mbar.commit entryconf [.mbar.commit index last] -state]
 .mbar.commit add command -label {Sign Off} \
        -command do_signoff \
+       -accelerator $M1T-S \
        -font $mainfont
 .mbar.commit add command -label Commit \
        -command do_commit \
+       -accelerator $M1T-Return \
        -font $mainfont
+lappend disable_on_lock \
+       [list .mbar.commit entryconf [.mbar.commit index last] -state]
 
 # -- Fetch Menu
 menu .mbar.fetch
@@ -733,14 +1620,24 @@ menu .mbar.fetch
 # -- Pull Menu
 menu .mbar.pull
 
+# -- Push Menu
+menu .mbar.push
+
+# -- Options Menu
+menu .mbar.options
+.mbar.options add checkbutton \
+       -label {Trust File Modification Timestamps} \
+       -offvalue false \
+       -onvalue true \
+       -variable cfg_trust_mtime
+
 # -- Main Window Layout
 panedwindow .vpane -orient vertical
 panedwindow .vpane.files -orient horizontal
-.vpane add .vpane.files -sticky nsew
+.vpane add .vpane.files -sticky nsew -height 100 -width 400
 pack .vpane -anchor n -side top -fill both -expand 1
 
 # -- Index File List
-set ui_index .vpane.files.index.list
 frame .vpane.files.index -height 100 -width 400
 label .vpane.files.index.title -text {Modified Files} \
        -background green \
@@ -758,7 +1655,6 @@ pack $ui_index -side left -fill both -expand 1
 .vpane.files add .vpane.files.index -sticky nsew
 
 # -- Other (Add) File List
-set ui_other .vpane.files.other.list
 frame .vpane.files.other -height 100 -width 100
 label .vpane.files.other.title -text {Untracked Files} \
        -background red \
@@ -778,106 +1674,134 @@ pack $ui_other -side left -fill both -expand 1
 $ui_index tag conf in_diff -font [concat $mainfont bold]
 $ui_other tag conf in_diff -font [concat $mainfont bold]
 
-# -- Diff Header
-set ui_fname_value {}
-set ui_fstatus_value {}
-frame .vpane.diff -height 50 -width 400
-frame .vpane.diff.header
-label .vpane.diff.header.l1 -text {File:} -font $mainfont
-label .vpane.diff.header.l2 -textvariable ui_fname_value \
-       -anchor w \
-       -justify left \
-       -font $mainfont
-label .vpane.diff.header.l3 -text {Status:} -font $mainfont
-label .vpane.diff.header.l4 -textvariable ui_fstatus_value \
-       -width $max_status_desc \
-       -anchor w \
-       -justify left \
-       -font $mainfont
-pack .vpane.diff.header.l1 -side left
-pack .vpane.diff.header.l2 -side left -fill x
-pack .vpane.diff.header.l4 -side right
-pack .vpane.diff.header.l3 -side right
-
-# -- Diff Body
-frame .vpane.diff.body
-set ui_diff .vpane.diff.body.t
-text $ui_diff -background white -borderwidth 0 \
-       -width 80 -height 15 \
-       -font $difffont \
-       -xscrollcommand {.vpane.diff.body.sbx set} \
-       -yscrollcommand {.vpane.diff.body.sby set} \
-       -cursor $maincursor \
-       -state disabled
-scrollbar .vpane.diff.body.sbx -orient horizontal \
-       -command [list $ui_diff xview]
-scrollbar .vpane.diff.body.sby -orient vertical \
-       -command [list $ui_diff yview]
-pack .vpane.diff.body.sbx -side bottom -fill x
-pack .vpane.diff.body.sby -side right -fill y
-pack $ui_diff -side left -fill both -expand 1
-pack .vpane.diff.header -side top -fill x
-pack .vpane.diff.body -side bottom -fill both -expand 1
-.vpane add .vpane.diff -stick nsew
-
-$ui_diff tag conf dm -foreground red
-$ui_diff tag conf dp -foreground blue
-$ui_diff tag conf da -font [concat $difffont bold]
-$ui_diff tag conf di -foreground "#00a000"
-$ui_diff tag conf dni -foreground "#a000a0"
-$ui_diff tag conf bold -font [concat $difffont bold]
-
-# -- Commit Area
-frame .vpane.commarea -height 50
-.vpane add .vpane.commarea -stick nsew
+# -- Diff and Commit Area
+frame .vpane.lower -height 400 -width 400
+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
 
 # -- Commit Area Buttons
-frame .vpane.commarea.buttons
-label .vpane.commarea.buttons.l -text {} \
+frame .vpane.lower.commarea.buttons
+label .vpane.lower.commarea.buttons.l -text {} \
        -anchor w \
        -justify left \
        -font $mainfont
-pack .vpane.commarea.buttons.l -side top -fill x
-pack .vpane.commarea.buttons -side left -fill y
+pack .vpane.lower.commarea.buttons.l -side top -fill x
+pack .vpane.lower.commarea.buttons -side left -fill y
 
-button .vpane.commarea.buttons.rescan -text {Rescan} \
+button .vpane.lower.commarea.buttons.rescan -text {Rescan} \
        -command do_rescan \
        -font $mainfont
-pack .vpane.commarea.buttons.rescan -side top -fill x
+pack .vpane.lower.commarea.buttons.rescan -side top -fill x
+lappend disable_on_lock {.vpane.lower.commarea.buttons.rescan conf -state}
+
+button .vpane.lower.commarea.buttons.amend -text {Amend Last} \
+       -command do_amend_last \
+       -font $mainfont
+pack .vpane.lower.commarea.buttons.amend -side top -fill x
+lappend disable_on_lock {.vpane.lower.commarea.buttons.amend conf -state}
 
-button .vpane.commarea.buttons.ciall -text {Check-in All} \
-       -command do_checkin_all \
+button .vpane.lower.commarea.buttons.incall -text {Include All} \
+       -command do_include_all \
        -font $mainfont
-pack .vpane.commarea.buttons.ciall -side top -fill x
+pack .vpane.lower.commarea.buttons.incall -side top -fill x
+lappend disable_on_lock {.vpane.lower.commarea.buttons.incall conf -state}
 
-button .vpane.commarea.buttons.signoff -text {Sign Off} \
+button .vpane.lower.commarea.buttons.signoff -text {Sign Off} \
        -command do_signoff \
        -font $mainfont
-pack .vpane.commarea.buttons.signoff -side top -fill x
+pack .vpane.lower.commarea.buttons.signoff -side top -fill x
 
-button .vpane.commarea.buttons.commit -text {Commit} \
+button .vpane.lower.commarea.buttons.commit -text {Commit} \
        -command do_commit \
        -font $mainfont
-pack .vpane.commarea.buttons.commit -side top -fill x
+pack .vpane.lower.commarea.buttons.commit -side top -fill x
+lappend disable_on_lock {.vpane.lower.commarea.buttons.commit conf -state}
 
 # -- Commit Message Buffer
-frame .vpane.commarea.buffer
-set ui_comm .vpane.commarea.buffer.t
-label .vpane.commarea.buffer.l -text {Commit Message:} \
+frame .vpane.lower.commarea.buffer
+set ui_comm .vpane.lower.commarea.buffer.t
+set ui_coml .vpane.lower.commarea.buffer.l
+label $ui_coml -text {Commit Message:} \
        -anchor w \
        -justify left \
        -font $mainfont
+trace add variable commit_type write {uplevel #0 {
+       switch -glob $commit_type \
+       initial {$ui_coml conf -text {Initial Commit Message:}} \
+       amend   {$ui_coml conf -text {Amended Commit Message:}} \
+       merge   {$ui_coml conf -text {Merge Commit Message:}} \
+       *       {$ui_coml conf -text {Commit Message:}}
+}}
 text $ui_comm -background white -borderwidth 1 \
+       -undo true \
+       -maxundo 20 \
+       -autoseparators true \
        -relief sunken \
-       -width 75 -height 10 -wrap none \
+       -width 75 -height 9 -wrap none \
        -font $difffont \
-       -yscrollcommand {.vpane.commarea.buffer.sby set} \
+       -yscrollcommand {.vpane.lower.commarea.buffer.sby set} \
        -cursor $maincursor
-scrollbar .vpane.commarea.buffer.sby -command [list $ui_comm yview]
-pack .vpane.commarea.buffer.l -side top -fill x
-pack .vpane.commarea.buffer.sby -side right -fill y
+scrollbar .vpane.lower.commarea.buffer.sby -command [list $ui_comm yview]
+pack $ui_coml -side top -fill x
+pack .vpane.lower.commarea.buffer.sby -side right -fill y
 pack $ui_comm -side left -fill y
-pack .vpane.commarea.buffer -side left -fill y
+pack .vpane.lower.commarea.buffer -side left -fill y
+
+# -- Diff Header
+set ui_fname_value {}
+set ui_fstatus_value {}
+frame .vpane.lower.diff.header -background orange
+label .vpane.lower.diff.header.l1 -text {File:} \
+       -background orange \
+       -font $mainfont
+label .vpane.lower.diff.header.l2 -textvariable ui_fname_value \
+       -background orange \
+       -anchor w \
+       -justify left \
+       -font $mainfont
+label .vpane.lower.diff.header.l3 -text {Status:} \
+       -background orange \
+       -font $mainfont
+label .vpane.lower.diff.header.l4 -textvariable ui_fstatus_value \
+       -background orange \
+       -width $max_status_desc \
+       -anchor w \
+       -justify left \
+       -font $mainfont
+pack .vpane.lower.diff.header.l1 -side left
+pack .vpane.lower.diff.header.l2 -side left -fill x
+pack .vpane.lower.diff.header.l4 -side right
+pack .vpane.lower.diff.header.l3 -side right
+
+# -- Diff Body
+frame .vpane.lower.diff.body
+set ui_diff .vpane.lower.diff.body.t
+text $ui_diff -background white -borderwidth 0 \
+       -width 80 -height 15 -wrap none \
+       -font $difffont \
+       -xscrollcommand {.vpane.lower.diff.body.sbx set} \
+       -yscrollcommand {.vpane.lower.diff.body.sby set} \
+       -cursor $maincursor \
+       -state disabled
+scrollbar .vpane.lower.diff.body.sbx -orient horizontal \
+       -command [list $ui_diff xview]
+scrollbar .vpane.lower.diff.body.sby -orient vertical \
+       -command [list $ui_diff yview]
+pack .vpane.lower.diff.body.sbx -side bottom -fill x
+pack .vpane.lower.diff.body.sby -side right -fill y
+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 dm -foreground red
+$ui_diff tag conf dp -foreground blue
+$ui_diff tag conf da -font [concat $difffont bold]
+$ui_diff tag conf di -foreground "#00a000"
+$ui_diff tag conf dni -foreground "#a000a0"
+$ui_diff tag conf bold -font [concat $difffont bold]
 
 # -- Status Bar
 set ui_status_value {Initializing...}
@@ -889,34 +1813,63 @@ label .status -textvariable ui_status_value \
        -font $mainfont
 pack .status -anchor w -side bottom -fill x
 
+# -- Load geometry
+catch {
+wm geometry . [lindex $repo_config(gui.geometry) 0 0]
+eval .vpane sash place 0 [lindex $repo_config(gui.geometry) 0 1]
+eval .vpane.files sash place 0 [lindex $repo_config(gui.geometry) 0 2]
+}
+
 # -- Key Bindings
-bind . <Destroy> do_quit
-bind . <Key-F5> do_rescan
-bind . <M1-Key-r> do_rescan
-bind . <M1-Key-R> do_rescan
-bind . <M1-Key-s> do_signoff
-bind . <M1-Key-S> do_signoff
-bind . <M1-Key-u> do_checkin_all
-bind . <M1-Key-U> do_checkin_all
-bind . <M1-Key-Return> do_commit
-bind . <M1-Key-q> do_quit
-bind . <M1-Key-Q> do_quit
+bind $ui_comm <$M1B-Key-Return> {do_commit;break}
+bind $ui_comm <$M1B-Key-i> {do_include_all;break}
+bind $ui_comm <$M1B-Key-I> {do_include_all;break}
+bind $ui_comm <$M1B-Key-x> {tk_textCut %W;break}
+bind $ui_comm <$M1B-Key-X> {tk_textCut %W;break}
+bind $ui_comm <$M1B-Key-c> {tk_textCopy %W;break}
+bind $ui_comm <$M1B-Key-C> {tk_textCopy %W;break}
+bind $ui_comm <$M1B-Key-v> {tk_textPaste %W; %W see insert; break}
+bind $ui_comm <$M1B-Key-V> {tk_textPaste %W; %W see insert; break}
+bind $ui_comm <$M1B-Key-a> {%W tag add sel 0.0 end;break}
+bind $ui_comm <$M1B-Key-A> {%W tag add sel 0.0 end;break}
+
+bind $ui_diff <$M1B-Key-x> {tk_textCopy %W;break}
+bind $ui_diff <$M1B-Key-X> {tk_textCopy %W;break}
+bind $ui_diff <$M1B-Key-c> {tk_textCopy %W;break}
+bind $ui_diff <$M1B-Key-C> {tk_textCopy %W;break}
+bind $ui_diff <$M1B-Key-v> {break}
+bind $ui_diff <$M1B-Key-V> {break}
+bind $ui_diff <$M1B-Key-a> {%W tag add sel 0.0 end;break}
+bind $ui_diff <$M1B-Key-A> {%W tag add sel 0.0 end;break}
+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 $ui_diff <Key-Right>  {catch {%W xview scroll  1 units};break}
+
+bind .   <Destroy> do_quit
+bind all <Key-F5> do_rescan
+bind all <$M1B-Key-r> do_rescan
+bind all <$M1B-Key-R> do_rescan
+bind .   <$M1B-Key-s> do_signoff
+bind .   <$M1B-Key-S> do_signoff
+bind .   <$M1B-Key-i> do_include_all
+bind .   <$M1B-Key-I> do_include_all
+bind .   <$M1B-Key-Return> do_commit
+bind all <$M1B-Key-q> do_quit
+bind all <$M1B-Key-Q> do_quit
+bind all <$M1B-Key-w> {destroy [winfo toplevel %W]}
+bind all <$M1B-Key-W> {destroy [winfo toplevel %W]}
 foreach i [list $ui_index $ui_other] {
        bind $i <Button-1> {click %W %x %y 1 %X %Y; break}
        bind $i <Button-3> {click %W %x %y 3 %X %Y; break}
        bind $i <ButtonRelease-1> {unclick %W %x %y; break}
 }
-unset i
-
-######################################################################
-##
-## main
-
-if {[catch {set gitdir [exec git rev-parse --git-dir]} err]} {
-       show_msg {} . "Cannot find the git directory: $err"
-       exit 1
-}
+unset i M1B M1T
 
-wm title . "git-ui ([file normalize [file dirname $gitdir]])"
+wm title . "$appname ([file normalize [file dirname $gitdir]])"
 focus -force $ui_comm
+load_all_remotes
+populate_remote_menu .mbar.fetch From fetch_from
+populate_remote_menu .mbar.push To push_to
+populate_pull_menu .mbar.pull
 update_status