Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7

1 files changed, 4062 insertions, 0 deletions

diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
new file mode 100755
index 000000000000..6de74ce639ce
--- /dev/null
+++ b/git-gui/git-gui.sh
@@ -0,0 +1,4062 @@
+#!/bin/sh
+# Tcl ignores the next line -*- tcl -*- \
+ if test "z$*" = zversion \
+ || test "z$*" = z--version; \
+ then \
+	echo 'git-gui version @@GITGUI_VERSION@@'; \
+	exit; \
+ fi; \
+ argv0=$0; \
+ exec wish "$argv0" -- "$@"
+
+set appvers {@@GITGUI_VERSION@@}
+set copyright [string map [list (c) \u00a9] {
+Copyright (c) 2006-2010 Shawn Pearce, et. al.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, see <http://www.gnu.org/licenses/>.}]
+
+######################################################################
+##
+## Tcl/Tk sanity check
+
+if {[catch {package require Tcl 8.4} err]
+ || [catch {package require Tk  8.4} err]
+} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title "git-gui: fatal error" \
+		-message $err
+	exit 1
+}
+
+catch {rename send {}} ; # What an evil concept...
+
+######################################################################
+##
+## locate our library
+
+if { [info exists ::env(GIT_GUI_LIB_DIR) ] } {
+	set oguilib $::env(GIT_GUI_LIB_DIR)
+} else {
+	set oguilib {@@GITGUI_LIBDIR@@}
+}
+set oguirel {@@GITGUI_RELATIVE@@}
+if {$oguirel eq {1}} {
+	set oguilib [file dirname [file normalize $argv0]]
+	if {[file tail $oguilib] eq {git-core}} {
+		set oguilib [file dirname $oguilib]
+	}
+	set oguilib [file dirname $oguilib]
+	set oguilib [file join $oguilib share git-gui lib]
+	set oguimsg [file join $oguilib msgs]
+} elseif {[string match @@* $oguirel]} {
+	set oguilib [file join [file dirname [file normalize $argv0]] lib]
+	set oguimsg [file join [file dirname [file normalize $argv0]] po]
+} else {
+	set oguimsg [file join $oguilib msgs]
+}
+unset oguirel
+
+######################################################################
+##
+## enable verbose loading?
+
+if {![catch {set _verbose $env(GITGUI_VERBOSE)}]} {
+	unset _verbose
+	rename auto_load real__auto_load
+	proc auto_load {name args} {
+		puts stderr "auto_load $name"
+		return [uplevel 1 real__auto_load $name $args]
+	}
+	rename source real__source
+	proc source {args} {
+		puts stderr "source    $args"
+		uplevel 1 [linsert $args 0 real__source]
+	}
+	if {[tk windowingsystem] eq "win32"} { console show }
+}
+
+######################################################################
+##
+## Internationalization (i18n) through msgcat and gettext. See
+## http://www.gnu.org/software/gettext/manual/html_node/Tcl.html
+
+package require msgcat
+
+# Check for Windows 7 MUI language pack (missed by msgcat < 1.4.4)
+if {[tk windowingsystem] eq "win32"
+	&& [package vcompare [package provide msgcat] 1.4.4] < 0
+} then {
+	proc _mc_update_locale {} {
+		set key {HKEY_CURRENT_USER\Control Panel\Desktop}
+		if {![catch {
+			package require registry
+			set uilocale [registry get $key "PreferredUILanguages"]
+			msgcat::ConvertLocale [string map {- _} [lindex $uilocale 0]]
+		} uilocale]} {
+			if {[string length $uilocale] > 0} {
+				msgcat::mclocale $uilocale
+			}
+		}
+	}
+	_mc_update_locale
+}
+
+proc _mc_trim {fmt} {
+	set cmk [string first @@ $fmt]
+	if {$cmk > 0} {
+		return [string range $fmt 0 [expr {$cmk - 1}]]
+	}
+	return $fmt
+}
+
+proc mc {en_fmt args} {
+	set fmt [_mc_trim [::msgcat::mc $en_fmt]]
+	if {[catch {set msg [eval [list format $fmt] $args]} err]} {
+		set msg [eval [list format [_mc_trim $en_fmt]] $args]
+	}
+	return $msg
+}
+
+proc strcat {args} {
+	return [join $args {}]
+}
+
+::msgcat::mcload $oguimsg
+unset oguimsg
+
+######################################################################
+##
+## On Mac, bring the current Wish process window to front
+
+if {[tk windowingsystem] eq "aqua"} {
+	catch {
+		exec osascript -e [format {
+			tell application "System Events"
+				set frontmost of processes whose unix id is %d to true
+			end tell
+		} [pid]]
+	}
+}
+
+######################################################################
+##
+## read only globals
+
+set _appname {Git Gui}
+set _gitdir {}
+set _gitworktree {}
+set _isbare {}
+set _gitexec {}
+set _githtmldir {}
+set _reponame {}
+set _iscygwin {}
+set _search_path {}
+set _shellpath {@@SHELL_PATH@@}
+
+set _trace [lsearch -exact $argv --trace]
+if {$_trace >= 0} {
+	set argv [lreplace $argv $_trace $_trace]
+	set _trace 1
+	if {[tk windowingsystem] eq "win32"} { console show }
+} else {
+	set _trace 0
+}
+
+# variable for the last merged branch (useful for a default when deleting
+# branches).
+set _last_merged_branch {}
+
+proc shellpath {} {
+	global _shellpath env
+	if {[string match @@* $_shellpath]} {
+		if {[info exists env(SHELL)]} {
+			return $env(SHELL)
+		} else {
+			return /bin/sh
+		}
+	}
+	return $_shellpath
+}
+
+proc appname {} {
+	global _appname
+	return $_appname
+}
+
+proc gitdir {args} {
+	global _gitdir
+	if {$args eq {}} {
+		return $_gitdir
+	}
+	return [eval [list file join $_gitdir] $args]
+}
+
+proc gitexec {args} {
+	global _gitexec
+	if {$_gitexec eq {}} {
+		if {[catch {set _gitexec [git --exec-path]} err]} {
+			error "Git not installed?\n\n$err"
+		}
+		if {[is_Cygwin]} {
+			set _gitexec [exec cygpath \
+				--windows \
+				--absolute \
+				$_gitexec]
+		} else {
+			set _gitexec [file normalize $_gitexec]
+		}
+	}
+	if {$args eq {}} {
+		return $_gitexec
+	}
+	return [eval [list file join $_gitexec] $args]
+}
+
+proc githtmldir {args} {
+	global _githtmldir
+	if {$_githtmldir eq {}} {
+		if {[catch {set _githtmldir [git --html-path]}]} {
+			# Git not installed or option not yet supported
+			return {}
+		}
+		if {[is_Cygwin]} {
+			set _githtmldir [exec cygpath \
+				--windows \
+				--absolute \
+				$_githtmldir]
+		} else {
+			set _githtmldir [file normalize $_githtmldir]
+		}
+	}
+	if {$args eq {}} {
+		return $_githtmldir
+	}
+	return [eval [list file join $_githtmldir] $args]
+}
+
+proc reponame {} {
+	return $::_reponame
+}
+
+proc is_MacOSX {} {
+	if {[tk windowingsystem] eq {aqua}} {
+		return 1
+	}
+	return 0
+}
+
+proc is_Windows {} {
+	if {$::tcl_platform(platform) eq {windows}} {
+		return 1
+	}
+	return 0
+}
+
+proc is_Cygwin {} {
+	global _iscygwin
+	if {$_iscygwin eq {}} {
+		if {$::tcl_platform(platform) eq {windows}} {
+			if {[catch {set p [exec cygpath --windir]} err]} {
+				set _iscygwin 0
+			} else {
+				set _iscygwin 1
+				# Handle MSys2 which is only cygwin when MSYSTEM is MSYS.
+				if {[info exists ::env(MSYSTEM)] && $::env(MSYSTEM) ne "MSYS"} {
+					set _iscygwin 0
+				}
+			}
+		} else {
+			set _iscygwin 0
+		}
+	}
+	return $_iscygwin
+}
+
+proc is_enabled {option} {
+	global enabled_options
+	if {[catch {set on $enabled_options($option)}]} {return 0}
+	return $on
+}
+
+proc enable_option {option} {
+	global enabled_options
+	set enabled_options($option) 1
+}
+
+proc disable_option {option} {
+	global enabled_options
+	set enabled_options($option) 0
+}
+
+######################################################################
+##
+## config
+
+proc is_many_config {name} {
+	switch -glob -- $name {
+	gui.recentrepo -
+	remote.*.fetch -
+	remote.*.push
+		{return 1}
+	*
+		{return 0}
+	}
+}
+
+proc is_config_true {name} {
+	global repo_config
+	if {[catch {set v $repo_config($name)}]} {
+		return 0
+	}
+	set v [string tolower $v]
+	if {$v eq {} || $v eq {true} || $v eq {1} || $v eq {yes} || $v eq {on}} {
+		return 1
+	} else {
+		return 0
+	}
+}
+
+proc is_config_false {name} {
+	global repo_config
+	if {[catch {set v $repo_config($name)}]} {
+		return 0
+	}
+	set v [string tolower $v]
+	if {$v eq {false} || $v eq {0} || $v eq {no} || $v eq {off}} {
+		return 1
+	} else {
+		return 0
+	}
+}
+
+proc get_config {name} {
+	global repo_config
+	if {[catch {set v $repo_config($name)}]} {
+		return {}
+	} else {
+		return $v
+	}
+}
+
+proc is_bare {} {
+	global _isbare
+	global _gitdir
+	global _gitworktree
+
+	if {$_isbare eq {}} {
+		if {[catch {
+			set _bare [git rev-parse --is-bare-repository]
+			switch  -- $_bare {
+			true { set _isbare 1 }
+			false { set _isbare 0}
+			default { throw }
+			}
+		}]} {
+			if {[is_config_true core.bare]
+				|| ($_gitworktree eq {}
+					&& [lindex [file split $_gitdir] end] ne {.git})} {
+				set _isbare 1
+			} else {
+				set _isbare 0
+			}
+		}
+	}
+	return $_isbare
+}
+
+######################################################################
+##
+## handy utils
+
+proc _trace_exec {cmd} {
+	if {!$::_trace} return
+	set d {}
+	foreach v $cmd {
+		if {$d ne {}} {
+			append d { }
+		}
+		if {[regexp {[ \t\r\n'"$?*]} $v]} {
+			set v [sq $v]
+		}
+		append d $v
+	}
+	puts stderr $d
+}
+
+#'"  fix poor old emacs font-lock mode
+
+proc _git_cmd {name} {
+	global _git_cmd_path
+
+	if {[catch {set v $_git_cmd_path($name)}]} {
+		switch -- $name {
+		  version   -
+		--version   -
+		--exec-path { return [list $::_git $name] }
+		}
+
+		set p [gitexec git-$name$::_search_exe]
+		if {[file exists $p]} {
+			set v [list $p]
+		} elseif {[is_Windows] && [file exists [gitexec git-$name]]} {
+			# Try to determine what sort of magic will make
+			# git-$name go and do its thing, because native
+			# Tcl on Windows doesn't know it.
+			#
+			set p [gitexec git-$name]
+			set f [open $p r]
+			set s [gets $f]
+			close $f
+
+			switch -glob -- [lindex $s 0] {
+			#!*sh     { set i sh     }
+			#!*perl   { set i perl   }
+			#!*python { set i python }
+			default   { error "git-$name is not supported: $s" }
+			}
+
+			upvar #0 _$i interp
+			if {![info exists interp]} {
+				set interp [_which $i]
+			}
+			if {$interp eq {}} {
+				error "git-$name requires $i (not in PATH)"
+			}
+			set v [concat [list $interp] [lrange $s 1 end] [list $p]]
+		} else {
+			# Assume it is builtin to git somehow and we
+			# aren't actually able to see a file for it.
+			#
+			set v [list $::_git $name]
+		}
+		set _git_cmd_path($name) $v
+	}
+	return $v
+}
+
+proc _which {what args} {
+	global env _search_exe _search_path
+
+	if {$_search_path eq {}} {
+		if {[is_Cygwin] && [regexp {^(/|\.:)} $env(PATH)]} {
+			set _search_path [split [exec cygpath \
+				--windows \
+				--path \
+				--absolute \
+				$env(PATH)] {;}]
+			set _search_exe .exe
+		} elseif {[is_Windows]} {
+			set gitguidir [file dirname [info script]]
+			regsub -all ";" $gitguidir "\\;" gitguidir
+			set env(PATH) "$gitguidir;$env(PATH)"
+			set _search_path [split $env(PATH) {;}]
+			set _search_exe .exe
+		} else {
+			set _search_path [split $env(PATH) :]
+			set _search_exe {}
+		}
+	}
+
+	if {[is_Windows] && [lsearch -exact $args -script] >= 0} {
+		set suffix {}
+	} else {
+		set suffix $_search_exe
+	}
+
+	foreach p $_search_path {
+		set p [file join $p $what$suffix]
+		if {[file exists $p]} {
+			return [file normalize $p]
+		}
+	}
+	return {}
+}
+
+# Test a file for a hashbang to identify executable scripts on Windows.
+proc is_shellscript {filename} {
+	if {![file exists $filename]} {return 0}
+	set f [open $filename r]
+	fconfigure $f -encoding binary
+	set magic [read $f 2]
+	close $f
+	return [expr {$magic eq "#!"}]
+}
+
+# Run a command connected via pipes on stdout.
+# This is for use with textconv filters and uses sh -c "..." to allow it to
+# contain a command with arguments. On windows we must check for shell
+# scripts specifically otherwise just call the filter command.
+proc open_cmd_pipe {cmd path} {
+	global env
+	if {![file executable [shellpath]]} {
+		set exe [auto_execok [lindex $cmd 0]]
+		if {[is_shellscript [lindex $exe 0]]} {
+			set run [linsert [auto_execok sh] end -c "$cmd \"\$0\"" $path]
+		} else {
+			set run [concat $exe [lrange $cmd 1 end] $path]
+		}
+	} else {
+		set run [list [shellpath] -c "$cmd \"\$0\"" $path]
+	}
+	return [open |$run r]
+}
+
+proc _lappend_nice {cmd_var} {
+	global _nice
+	upvar $cmd_var cmd
+
+	if {![info exists _nice]} {
+		set _nice [_which nice]
+		if {[catch {exec $_nice git version}]} {
+			set _nice {}
+		} elseif {[is_Windows] && [file dirname $_nice] ne [file dirname $::_git]} {
+			set _nice {}
+		}
+	}
+	if {$_nice ne {}} {
+		lappend cmd $_nice
+	}
+}
+
+proc git {args} {
+	set fd [eval [list git_read] $args]
+	fconfigure $fd -translation binary -encoding utf-8
+	set result [string trimright [read $fd] "\n"]
+	close $fd
+	if {$::_trace} {
+		puts stderr "< $result"
+	}
+	return $result
+}
+
+proc _open_stdout_stderr {cmd} {
+	_trace_exec $cmd
+	if {[catch {
+			set fd [open [concat [list | ] $cmd] r]
+		} err]} {
+		if {   [lindex $cmd end] eq {2>@1}
+		    && $err eq {can not find channel named "1"}
+			} {
+			# Older versions of Tcl 8.4 don't have this 2>@1 IO
+			# redirect operator.  Fallback to |& cat for those.
+			# The command was not actually started, so its safe
+			# to try to start it a second time.
+			#
+			set fd [open [concat \
+				[list | ] \
+				[lrange $cmd 0 end-1] \
+				[list |& cat] \
+				] r]
+		} else {
+			error $err
+		}
+	}
+	fconfigure $fd -eofchar {}
+	return $fd
+}
+
+proc git_read {args} {
+	set opt [list]
+
+	while {1} {
+		switch -- [lindex $args 0] {
+		--nice {
+			_lappend_nice opt
+		}
+
+		--stderr {
+			lappend args 2>@1
+		}
+
+		default {
+			break
+		}
+
+		}
+
+		set args [lrange $args 1 end]
+	}
+
+	set cmdp [_git_cmd [lindex $args 0]]
+	set args [lrange $args 1 end]
+
+	return [_open_stdout_stderr [concat $opt $cmdp $args]]
+}
+
+proc git_write {args} {
+	set opt [list]
+
+	while {1} {
+		switch -- [lindex $args 0] {
+		--nice {
+			_lappend_nice opt
+		}
+
+		default {
+			break
+		}
+
+		}
+
+		set args [lrange $args 1 end]
+	}
+
+	set cmdp [_git_cmd [lindex $args 0]]
+	set args [lrange $args 1 end]
+
+	_trace_exec [concat $opt $cmdp $args]
+	return [open [concat [list | ] $opt $cmdp $args] w]
+}
+
+proc githook_read {hook_name args} {
+	set pchook [gitdir hooks $hook_name]
+	lappend args 2>@1
+
+	# On Windows [file executable] might lie so we need to ask
+	# the shell if the hook is executable.  Yes that's annoying.
+	#
+	if {[is_Windows]} {
+		upvar #0 _sh interp
+		if {![info exists interp]} {
+			set interp [_which sh]
+		}
+		if {$interp eq {}} {
+			error "hook execution requires sh (not in PATH)"
+		}
+
+		set scr {if test -x "$1";then exec "$@";fi}
+		set sh_c [list $interp -c $scr $interp $pchook]
+		return [_open_stdout_stderr [concat $sh_c $args]]
+	}
+
+	if {[file executable $pchook]} {
+		return [_open_stdout_stderr [concat [list $pchook] $args]]
+	}
+
+	return {}
+}
+
+proc kill_file_process {fd} {
+	set process [pid $fd]
+
+	catch {
+		if {[is_Windows]} {
+			exec taskkill /pid $process
+		} else {
+			exec kill $process
+		}
+	}
+}
+
+proc gitattr {path attr default} {
+	if {[catch {set r [git check-attr $attr -- $path]}]} {
+		set r unspecified
+	} else {
+		set r [join [lrange [split $r :] 2 end] :]
+		regsub {^ } $r {} r
+	}
+	if {$r eq {unspecified}} {
+		return $default
+	}
+	return $r
+}
+
+proc sq {value} {
+	regsub -all ' $value "'\\''" value
+	return "'$value'"
+}
+
+proc load_current_branch {} {
+	global current_branch is_detached
+
+	set fd [open [gitdir HEAD] r]
+	if {[gets $fd ref] < 1} {
+		set ref {}
+	}
+	close $fd
+
+	set pfx {ref: refs/heads/}
+	set len [string length $pfx]
+	if {[string equal -length $len $pfx $ref]} {
+		# We're on a branch.  It might not exist.  But
+		# HEAD looks good enough to be a branch.
+		#
+		set current_branch [string range $ref $len end]
+		set is_detached 0
+	} else {
+		# Assume this is a detached head.
+		#
+		set current_branch HEAD
+		set is_detached 1
+	}
+}
+
+auto_load tk_optionMenu
+rename tk_optionMenu real__tkOptionMenu
+proc tk_optionMenu {w varName args} {
+	set m [eval real__tkOptionMenu $w $varName $args]
+	$m configure -font font_ui
+	$w configure -font font_ui
+	return $m
+}
+
+proc rmsel_tag {text} {
+	$text tag conf sel \
+		-background [$text cget -background] \
+		-foreground [$text cget -foreground] \
+		-borderwidth 0
+	$text tag conf in_sel -background lightgray
+	bind $text <Motion> break
+	return $text
+}
+
+wm withdraw .
+set root_exists 0
+bind . <Visibility> {
+	bind . <Visibility> {}
+	set root_exists 1
+}
+
+if {[is_Windows]} {
+	wm iconbitmap . -default $oguilib/git-gui.ico
+	set ::tk::AlwaysShowSelection 1
+	bind . <Control-F2> {console show}
+
+	# Spoof an X11 display for SSH
+	if {![info exists env(DISPLAY)]} {
+		set env(DISPLAY) :9999
+	}
+} else {
+	catch {
+		image create photo gitlogo -width 16 -height 16
+
+		gitlogo put #33CC33 -to  7  0  9  2
+		gitlogo put #33CC33 -to  4  2 12  4
+		gitlogo put #33CC33 -to  7  4  9  6
+		gitlogo put #CC3333 -to  4  6 12  8
+		gitlogo put gray26  -to  4  9  6 10
+		gitlogo put gray26  -to  3 10  6 12
+		gitlogo put gray26  -to  8  9 13 11
+		gitlogo put gray26  -to  8 11 10 12
+		gitlogo put gray26  -to 11 11 13 14
+		gitlogo put gray26  -to  3 12  5 14
+		gitlogo put gray26  -to  5 13
+		gitlogo put gray26  -to 10 13
+		gitlogo put gray26  -to  4 14 12 15
+		gitlogo put gray26  -to  5 15 11 16
+		gitlogo redither
+
+		image create photo gitlogo32 -width 32 -height 32
+		gitlogo32 copy gitlogo -zoom 2 2
+
+		wm iconphoto . -default gitlogo gitlogo32
+	}
+}
+
+######################################################################
+##
+## config defaults
+
+set cursor_ptr arrow
+font create font_ui
+if {[lsearch -exact [font names] TkDefaultFont] != -1} {
+	eval [linsert [font actual TkDefaultFont] 0 font configure font_ui]
+	eval [linsert [font actual TkFixedFont] 0 font create font_diff]
+} else {
+	font create font_diff -family Courier -size 10
+	catch {
+		label .dummy
+		eval font configure font_ui [font actual [.dummy cget -font]]
+		destroy .dummy
+	}
+}
+
+font create font_uiitalic
+font create font_uibold
+font create font_diffbold
+font create font_diffitalic
+
+foreach class {Button Checkbutton Entry Label
+		Labelframe Listbox Message
+		Radiobutton Spinbox Text} {
+	option add *$class.font font_ui
+}
+if {![is_MacOSX]} {
+	option add *Menu.font font_ui
+	option add *Entry.borderWidth 1 startupFile
+	option add *Entry.relief sunken startupFile
+	option add *RadioButton.anchor w startupFile
+}
+unset class
+
+if {[is_Windows] || [is_MacOSX]} {
+	option add *Menu.tearOff 0
+}
+
+if {[is_MacOSX]} {
+	set M1B M1
+	set M1T Cmd
+} else {
+	set M1B Control
+	set M1T Ctrl
+}
+
+proc bind_button3 {w cmd} {
+	bind $w <Any-Button-3> $cmd
+	if {[is_MacOSX]} {
+		# Mac OS X sends Button-2 on right click through three-button mouse,
+		# or through trackpad right-clicking (two-finger touch + click).
+		bind $w <Any-Button-2> $cmd
+		bind $w <Control-Button-1> $cmd
+	}
+}
+
+proc apply_config {} {
+	global repo_config font_descs
+
+	foreach option $font_descs {
+		set name [lindex $option 0]
+		set font [lindex $option 1]
+		if {[catch {
+			set need_weight 1
+			foreach {cn cv} $repo_config(gui.$name) {
+				if {$cn eq {-weight}} {
+					set need_weight 0
+				}
+				font configure $font $cn $cv
+			}
+			if {$need_weight} {
+				font configure $font -weight normal
+			}
+			} err]} {
+			error_popup [strcat [mc "Invalid font specified in %s:" "gui.$name"] "\n\n$err"]
+		}
+		foreach {cn cv} [font configure $font] {
+			font configure ${font}bold $cn $cv
+			font configure ${font}italic $cn $cv
+		}
+		font configure ${font}bold -weight bold
+		font configure ${font}italic -slant italic
+	}
+
+	global use_ttk NS
+	set use_ttk 0
+	set NS {}
+	if {$repo_config(gui.usettk)} {
+		set use_ttk [package vsatisfies [package provide Tk] 8.5]
+		if {$use_ttk} {
+			set NS ttk
+			bind [winfo class .] <<ThemeChanged>> [list InitTheme]
+			pave_toplevel .
+		}
+	}
+}
+
+set default_config(branch.autosetupmerge) true
+set default_config(merge.tool) {}
+set default_config(mergetool.keepbackup) true
+set default_config(merge.diffstat) true
+set default_config(merge.summary) false
+set default_config(merge.verbosity) 2
+set default_config(user.name) {}
+set default_config(user.email) {}
+
+set default_config(gui.encoding) [encoding system]
+set default_config(gui.matchtrackingbranch) false
+set default_config(gui.textconv) true
+set default_config(gui.pruneduringfetch) false
+set default_config(gui.trustmtime) false
+set default_config(gui.fastcopyblame) false
+set default_config(gui.maxrecentrepo) 10
+set default_config(gui.copyblamethreshold) 40
+set default_config(gui.blamehistoryctx) 7
+set default_config(gui.diffcontext) 5
+set default_config(gui.diffopts) {}
+set default_config(gui.commitmsgwidth) 75
+set default_config(gui.newbranchtemplate) {}
+set default_config(gui.spellingdictionary) {}
+set default_config(gui.fontui) [font configure font_ui]
+set default_config(gui.fontdiff) [font configure font_diff]
+# TODO: this option should be added to the git-config documentation
+set default_config(gui.maxfilesdisplayed) 5000
+set default_config(gui.usettk) 1
+set default_config(gui.warndetachedcommit) 1
+set default_config(gui.tabsize) 8
+set font_descs {
+	{fontui   font_ui   {mc "Main Font"}}
+	{fontdiff font_diff {mc "Diff/Console Font"}}
+}
+set default_config(gui.stageuntracked) ask
+set default_config(gui.displayuntracked) true
+
+######################################################################
+##
+## find git
+
+set _git  [_which git]
+if {$_git eq {}} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title [mc "git-gui: fatal error"] \
+		-message [mc "Cannot find git in PATH."]
+	exit 1
+}
+
+######################################################################
+##
+## version check
+
+if {[catch {set _git_version [git --version]} err]} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title [mc "git-gui: fatal error"] \
+		-message "Cannot determine Git version:
+
+$err
+
+[appname] requires Git 1.5.0 or later."
+	exit 1
+}
+if {![regsub {^git version } $_git_version {} _git_version]} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title [mc "git-gui: fatal error"] \
+		-message [strcat [mc "Cannot parse Git version string:"] "\n\n$_git_version"]
+	exit 1
+}
+
+proc get_trimmed_version {s} {
+    set r {}
+    foreach x [split $s -._] {
+        if {[string is integer -strict $x]} {
+            lappend r $x
+        } else {
+            break
+        }
+    }
+    return [join $r .]
+}
+set _real_git_version $_git_version
+set _git_version [get_trimmed_version $_git_version]
+
+if {![regexp {^[1-9]+(\.[0-9]+)+$} $_git_version]} {
+	catch {wm withdraw .}
+	if {[tk_messageBox \
+		-icon warning \
+		-type yesno \
+		-default no \
+		-title "[appname]: warning" \
+		 -message [mc "Git version cannot be determined.
+
+%s claims it is version '%s'.
+
+%s requires at least Git 1.5.0 or later.
+
+Assume '%s' is version 1.5.0?
+" $_git $_real_git_version [appname] $_real_git_version]] eq {yes}} {
+		set _git_version 1.5.0
+	} else {
+		exit 1
+	}
+}
+unset _real_git_version
+
+proc git-version {args} {
+	global _git_version
+
+	switch [llength $args] {
+	0 {
+		return $_git_version
+	}
+
+	2 {
+		set op [lindex $args 0]
+		set vr [lindex $args 1]
+		set cm [package vcompare $_git_version $vr]
+		return [expr $cm $op 0]
+	}
+
+	4 {
+		set type [lindex $args 0]
+		set name [lindex $args 1]
+		set parm [lindex $args 2]
+		set body [lindex $args 3]
+
+		if {($type ne {proc} && $type ne {method})} {
+			error "Invalid arguments to git-version"
+		}
+		if {[llength $body] < 2 || [lindex $body end-1] ne {default}} {
+			error "Last arm of $type $name must be default"
+		}
+
+		foreach {op vr cb} [lrange $body 0 end-2] {
+			if {[git-version $op $vr]} {
+				return [uplevel [list $type $name $parm $cb]]
+			}
+		}
+
+		return [uplevel [list $type $name $parm [lindex $body end]]]
+	}
+
+	default {
+		error "git-version >= x"
+	}
+
+	}
+}
+
+if {[git-version < 1.5]} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title [mc "git-gui: fatal error"] \
+		-message "[appname] requires Git 1.5.0 or later.
+
+You are using [git-version]:
+
+[git --version]"
+	exit 1
+}
+
+######################################################################
+##
+## configure our library
+
+set idx [file join $oguilib tclIndex]
+if {[catch {set fd [open $idx r]} err]} {
+	catch {wm withdraw .}
+	tk_messageBox \
+		-icon error \
+		-type ok \
+		-title [mc "git-gui: fatal error"] \
+		-message $err
+	exit 1
+}
+if {[gets $fd] eq {# Autogenerated by git-gui Makefile}} {
+	set idx [list]
+	while {[gets $fd n] >= 0} {
+		if {$n ne {} && ![string match #* $n]} {
+			lappend idx $n
+		}
+	}
+} else {
+	set idx {}
+}
+close $fd
+
+if {$idx ne {}} {
+	set loaded [list]
+	foreach p $idx {
+		if {[lsearch -exact $loaded $p] >= 0} continue
+		source [file join $oguilib $p]
+		lappend loaded $p
+	}
+	unset loaded p
+} else {
+	set auto_path [concat [list $oguilib] $auto_path]
+}
+unset -nocomplain idx fd
+
+######################################################################
+##
+## config file parsing
+
+git-version proc _parse_config {arr_name args} {
+	>= 1.5.3 {
+		upvar $arr_name arr
+		array unset arr
+		set buf {}
+		catch {
+			set fd_rc [eval \
+				[list git_read config] \
+				$args \
+				[list --null --list]]
+			fconfigure $fd_rc -translation binary -encoding utf-8
+			set buf [read $fd_rc]
+			close $fd_rc
+		}
+		foreach line [split $buf "\0"] {
+			if {[regexp {^([^\n]+)\n(.*)$} $line line name value]} {
+				if {[is_many_config $name]} {
+					lappend arr($name) $value
+				} else {
+					set arr($name) $value
+				}
+			} elseif {[regexp {^([^\n]+)$} $line line name]} {
+				# no value given, but interpreting them as
+				# boolean will be handled as true
+				set arr($name) {}
+			}
+		}
+	}
+	default {
+		upvar $arr_name arr
+		array unset arr
+		catch {
+			set fd_rc [eval [list git_read config --list] $args]
+			while {[gets $fd_rc line] >= 0} {
+				if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
+					if {[is_many_config $name]} {
+						lappend arr($name) $value
+					} else {
+						set arr($name) $value
+					}
+				} elseif {[regexp {^([^=]+)$} $line line name]} {
+					# no value given, but interpreting them as
+					# boolean will be handled as true
+					set arr($name) {}
+				}
+			}
+			close $fd_rc
+		}
+	}
+}
+
+proc load_config {include_global} {
+	global repo_config global_config system_config default_config
+
+	if {$include_global} {
+		_parse_config system_config --system
+		_parse_config global_config --global
+	}
+	_parse_config repo_config
+
+	foreach name [array names default_config] {
+		if {[catch {set v $system_config($name)}]} {
+			set system_config($name) $default_config($name)
+		}
+	}
+	foreach name [array names system_config] {
+		if {[catch {set v $global_config($name)}]} {
+			set global_config($name) $system_config($name)
+		}
+		if {[catch {set v $repo_config($name)}]} {
+			set repo_config($name) $system_config($name)
+		}
+	}
+}
+
+######################################################################
+##
+## feature option selection
+
+if {[regexp {^git-(.+)$} [file tail $argv0] _junk subcommand]} {
+	unset _junk
+} else {
+	set subcommand gui
+}
+if {$subcommand eq {gui.sh}} {
+	set subcommand gui
+}
+if {$subcommand eq {gui} && [llength $argv] > 0} {
+	set subcommand [lindex $argv 0]
+	set argv [lrange $argv 1 end]
+}
+
+enable_option multicommit
+enable_option branch
+enable_option transport
+disable_option bare
+
+switch -- $subcommand {
+browser -
+blame {
+	enable_option bare
+
+	disable_option multicommit
+	disable_option branch
+	disable_option transport
+}
+citool {
+	enable_option singlecommit
+	enable_option retcode
+
+	disable_option multicommit
+	disable_option branch
+	disable_option transport
+
+	while {[llength $argv] > 0} {
+		set a [lindex $argv 0]
+		switch -- $a {
+		--amend {
+			enable_option initialamend
+		}
+		--nocommit {
+			enable_option nocommit
+			enable_option nocommitmsg
+		}
+		--commitmsg {
+			disable_option nocommitmsg
+		}
+		default {
+			break
+		}
+		}
+
+		set argv [lrange $argv 1 end]
+	}
+}
+}
+
+######################################################################
+##
+## execution environment
+
+set have_tk85 [expr {[package vcompare $tk_version "8.5"] >= 0}]
+
+# Suggest our implementation of askpass, if none is set
+if {![info exists env(SSH_ASKPASS)]} {
+	set env(SSH_ASKPASS) [gitexec git-gui--askpass]
+}
+
+######################################################################
+##
+## repository setup
+
+set picked 0
+if {[catch {
+		set _gitdir $env(GIT_DIR)
+		set _prefix {}
+		}]
+	&& [catch {
+		# beware that from the .git dir this sets _gitdir to .
+		# and _prefix to the empty string
+		set _gitdir [git rev-parse --git-dir]
+		set _prefix [git rev-parse --show-prefix]
+	} err]} {
+	load_config 1
+	apply_config
+	choose_repository::pick
+	set picked 1
+}
+
+# we expand the _gitdir when it's just a single dot (i.e. when we're being
+# run from the .git dir itself) lest the routines to find the worktree
+# get confused
+if {$_gitdir eq "."} {
+	set _gitdir [pwd]
+}
+
+if {![file isdirectory $_gitdir] && [is_Cygwin]} {
+	catch {set _gitdir [exec cygpath --windows $_gitdir]}
+}
+if {![file isdirectory $_gitdir]} {
+	catch {wm withdraw .}
+	error_popup [strcat [mc "Git directory not found:"] "\n\n$_gitdir"]
+	exit 1
+}
+# _gitdir exists, so try loading the config
+load_config 0
+apply_config
+
+# v1.7.0 introduced --show-toplevel to return the canonical work-tree
+if {[package vcompare $_git_version 1.7.0] >= 0} {
+	if { [is_Cygwin] } {
+		catch {set _gitworktree [exec cygpath --windows [git rev-parse --show-toplevel]]}
+	} else {
+		set _gitworktree [git rev-parse --show-toplevel]
+	}
+} else {
+	# try to set work tree from environment, core.worktree or use
+	# cdup to obtain a relative path to the top of the worktree. If
+	# run from the top, the ./ prefix ensures normalize expands pwd.
+	if {[catch { set _gitworktree $env(GIT_WORK_TREE) }]} {
+		set _gitworktree [get_config core.worktree]
+		if {$_gitworktree eq ""} {
+			set _gitworktree [file normalize ./[git rev-parse --show-cdup]]
+		}
+	}
+}
+
+if {$_prefix ne {}} {
+	if {$_gitworktree eq {}} {
+		regsub -all {[^/]+/} $_prefix ../ cdup
+	} else {
+		set cdup $_gitworktree
+	}
+	if {[catch {cd $cdup} err]} {
+		catch {wm withdraw .}
+		error_popup [strcat [mc "Cannot move to top of working directory:"] "\n\n$err"]
+		exit 1
+	}
+	set _gitworktree [pwd]
+	unset cdup
+} elseif {![is_enabled bare]} {
+	if {[is_bare]} {
+		catch {wm withdraw .}
+		error_popup [strcat [mc "Cannot use bare repository:"] "\n\n$_gitdir"]
+		exit 1
+	}
+	if {$_gitworktree eq {}} {
+		set _gitworktree [file dirname $_gitdir]
+	}
+	if {[catch {cd $_gitworktree} err]} {
+		catch {wm withdraw .}
+		error_popup [strcat [mc "No working directory"] " $_gitworktree:\n\n$err"]
+		exit 1
+	}
+	set _gitworktree [pwd]
+}
+set _reponame [file split [file normalize $_gitdir]]
+if {[lindex $_reponame end] eq {.git}} {
+	set _reponame [lindex $_reponame end-1]
+} else {
+	set _reponame [lindex $_reponame end]
+}
+
+set env(GIT_DIR) $_gitdir
+set env(GIT_WORK_TREE) $_gitworktree
+
+######################################################################
+##
+## global init
+
+set current_diff_path {}
+set current_diff_side {}
+set diff_actions [list]
+
+set HEAD {}
+set PARENT {}
+set MERGE_HEAD [list]
+set commit_type {}
+set empty_tree {}
+set current_branch {}
+set is_detached 0
+set current_diff_path {}
+set is_3way_diff 0
+set is_submodule_diff 0
+set is_conflict_diff 0
+set selected_commit_type new
+set diff_empty_count 0
+
+set nullid "0000000000000000000000000000000000000000"
+set nullid2 "0000000000000000000000000000000000000001"
+
+######################################################################
+##
+## task management
+
+set rescan_active 0
+set diff_active 0
+set last_clicked {}
+
+set disable_on_lock [list]
+set index_lock_type none
+
+proc lock_index {type} {
+	global index_lock_type disable_on_lock
+
+	if {$index_lock_type eq {none}} {
+		set index_lock_type $type
+		foreach w $disable_on_lock {
+			uplevel #0 $w disabled
+		}
+		return 1
+	} elseif {$index_lock_type eq "begin-$type"} {
+		set index_lock_type $type
+		return 1
+	}
+	return 0
+}
+
+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 {ctvar hdvar mhvar} {
+	global current_branch
+	upvar $ctvar ct $hdvar hd $mhvar mh
+
+	set mh [list]
+
+	load_current_branch
+	if {[catch {set hd [git rev-parse --verify HEAD]}]} {
+		set hd {}
+		set ct initial
+		return
+	}
+
+	set merge_head [gitdir MERGE_HEAD]
+	if {[file exists $merge_head]} {
+		set ct merge
+		set fd_mh [open $merge_head r]
+		while {[gets $fd_mh line] >= 0} {
+			lappend mh $line
+		}
+		close $fd_mh
+		return
+	}
+
+	set ct normal
+}
+
+proc PARENT {} {
+	global PARENT empty_tree
+
+	set p [lindex $PARENT 0]
+	if {$p ne {}} {
+		return $p
+	}
+	if {$empty_tree eq {}} {
+		set empty_tree [git mktree << {}]
+	}
+	return $empty_tree
+}
+
+proc force_amend {} {
+	global selected_commit_type
+	global HEAD PARENT MERGE_HEAD commit_type
+
+	repository_state newType newHEAD newMERGE_HEAD
+	set HEAD $newHEAD
+	set PARENT $newHEAD
+	set MERGE_HEAD $newMERGE_HEAD
+	set commit_type $newType
+
+	set selected_commit_type amend
+	do_select_commit_type
+}
+
+proc rescan {after {honor_trustmtime 1}} {
+	global HEAD PARENT MERGE_HEAD commit_type
+	global ui_index ui_workdir ui_comm
+	global rescan_active file_states
+	global repo_config
+
+	if {$rescan_active > 0 || ![lock_index read]} return
+
+	repository_state newType newHEAD newMERGE_HEAD
+	if {[string match amend* $commit_type]
+		&& $newType eq {normal}
+		&& $newHEAD eq $HEAD} {
+	} else {
+		set HEAD $newHEAD
+		set PARENT $newHEAD
+		set MERGE_HEAD $newMERGE_HEAD
+		set commit_type $newType
+	}
+
+	array unset file_states
+
+	if {!$::GITGUI_BCK_exists &&
+		(![$ui_comm edit modified]
+		|| [string trim [$ui_comm get 0.0 end]] eq {})} {
+		if {[string match amend* $commit_type]} {
+		} elseif {[load_message GITGUI_MSG utf-8]} {
+		} elseif {[run_prepare_commit_msg_hook]} {
+		} elseif {[load_message MERGE_MSG]} {
+		} elseif {[load_message SQUASH_MSG]} {
+		}
+		$ui_comm edit reset
+		$ui_comm edit modified false
+	}
+
+	if {$honor_trustmtime && $repo_config(gui.trustmtime) eq {true}} {
+		rescan_stage2 {} $after
+	} else {
+		set rescan_active 1
+		ui_status [mc "Refreshing file status..."]
+		set fd_rf [git_read update-index \
+			-q \
+			--unmerged \
+			--ignore-missing \
+			--refresh \
+			]
+		fconfigure $fd_rf -blocking 0 -translation binary
+		fileevent $fd_rf readable \
+			[list rescan_stage2 $fd_rf $after]
+	}
+}
+
+if {[is_Cygwin]} {
+	set is_git_info_exclude {}
+	proc have_info_exclude {} {
+		global is_git_info_exclude
+
+		if {$is_git_info_exclude eq {}} {
+			if {[catch {exec test -f [gitdir info exclude]}]} {
+				set is_git_info_exclude 0
+			} else {
+				set is_git_info_exclude 1
+			}
+		}
+		return $is_git_info_exclude
+	}
+} else {
+	proc have_info_exclude {} {
+		return [file readable [gitdir info exclude]]
+	}
+}
+
+proc rescan_stage2 {fd after} {
+	global rescan_active buf_rdi buf_rdf buf_rlo
+
+	if {$fd ne {}} {
+		read $fd
+		if {![eof $fd]} return
+		close $fd
+	}
+
+	if {[package vcompare $::_git_version 1.6.3] >= 0} {
+		set ls_others [list --exclude-standard]
+	} else {
+		set ls_others [list --exclude-per-directory=.gitignore]
+		if {[have_info_exclude]} {
+			lappend ls_others "--exclude-from=[gitdir info exclude]"
+		}
+		set user_exclude [get_config core.excludesfile]
+		if {$user_exclude ne {} && [file readable $user_exclude]} {
+			lappend ls_others "--exclude-from=[file normalize $user_exclude]"
+		}
+	}
+
+	set buf_rdi {}
+	set buf_rdf {}
+	set buf_rlo {}
+
+	set rescan_active 2
+	ui_status [mc "Scanning for modified files ..."]
+	if {[git-version >= "1.7.2"]} {
+		set fd_di [git_read diff-index --cached --ignore-submodules=dirty -z [PARENT]]
+	} else {
+		set fd_di [git_read diff-index --cached -z [PARENT]]
+	}
+	set fd_df [git_read diff-files -z]
+
+	fconfigure $fd_di -blocking 0 -translation binary -encoding binary
+	fconfigure $fd_df -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]
+
+	if {[is_config_true gui.displayuntracked]} {
+		set fd_lo [eval git_read ls-files --others -z $ls_others]
+		fconfigure $fd_lo -blocking 0 -translation binary -encoding binary
+		fileevent $fd_lo readable [list read_ls_others $fd_lo $after]
+		incr rescan_active
+	}
+}
+
+proc load_message {file {encoding {}}} {
+	global ui_comm
+
+	set f [gitdir $file]
+	if {[file isfile $f]} {
+		if {[catch {set fd [open $f r]}]} {
+			return 0
+		}
+		fconfigure $fd -eofchar {}
+		if {$encoding ne {}} {
+			fconfigure $fd -encoding $encoding
+		}
+		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
+	}
+	return 0
+}
+
+proc run_prepare_commit_msg_hook {} {
+	global pch_error
+
+	# prepare-commit-msg requires PREPARE_COMMIT_MSG exist.  From git-gui
+	# it will be .git/MERGE_MSG (merge), .git/SQUASH_MSG (squash), or an
+	# empty file but existent file.
+
+	set fd_pcm [open [gitdir PREPARE_COMMIT_MSG] a]
+
+	if {[file isfile [gitdir MERGE_MSG]]} {
+		set pcm_source "merge"
+		set fd_mm [open [gitdir MERGE_MSG] r]
+		fconfigure $fd_mm -encoding utf-8
+		puts -nonewline $fd_pcm [read $fd_mm]
+		close $fd_mm
+	} elseif {[file isfile [gitdir SQUASH_MSG]]} {
+		set pcm_source "squash"
+		set fd_sm [open [gitdir SQUASH_MSG] r]
+		fconfigure $fd_sm -encoding utf-8
+		puts -nonewline $fd_pcm [read $fd_sm]
+		close $fd_sm
+	} else {
+		set pcm_source ""
+	}
+
+	close $fd_pcm
+
+	set fd_ph [githook_read prepare-commit-msg \
+			[gitdir PREPARE_COMMIT_MSG] $pcm_source]
+	if {$fd_ph eq {}} {
+		catch {file delete [gitdir PREPARE_COMMIT_MSG]}
+		return 0;
+	}
+
+	ui_status [mc "Calling prepare-commit-msg hook..."]
+	set pch_error {}
+
+	fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
+	fileevent $fd_ph readable \
+		[list prepare_commit_msg_hook_wait $fd_ph]
+
+	return 1;
+}
+
+proc prepare_commit_msg_hook_wait {fd_ph} {
+	global pch_error
+
+	append pch_error [read $fd_ph]
+	fconfigure $fd_ph -blocking 1
+	if {[eof $fd_ph]} {
+		if {[catch {close $fd_ph}]} {
+			ui_status [mc "Commit declined by prepare-commit-msg hook."]
+			hook_failed_popup prepare-commit-msg $pch_error
+			catch {file delete [gitdir PREPARE_COMMIT_MSG]}
+			exit 1
+		} else {
+			load_message PREPARE_COMMIT_MSG
+		}
+		set pch_error {}
+		catch {file delete [gitdir PREPARE_COMMIT_MSG]}
+		return
+        }
+	fconfigure $fd_ph -blocking 0
+	catch {file delete [gitdir PREPARE_COMMIT_MSG]}
+}
+
+proc read_diff_index {fd after} {
+	global buf_rdi
+
+	append buf_rdi [read $fd]
+	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
+
+		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 \
+			[encoding convertfrom utf-8 $p] \
+			[lindex $i 4]? \
+			[list [lindex $i 0] [lindex $i 2]] \
+			[list]
+		set c $z2
+		incr c
+	}
+	if {$c < $n} {
+		set buf_rdi [string range $buf_rdi $c end]
+	} else {
+		set buf_rdi {}
+	}
+
+	rescan_done $fd buf_rdi $after
+}
+
+proc read_diff_files {fd after} {
+	global buf_rdf
+
+	append buf_rdf [read $fd]
+	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
+
+		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 \
+			[encoding convertfrom utf-8 $p] \
+			?[lindex $i 4] \
+			[list] \
+			[list [lindex $i 0] [lindex $i 2]]
+		set c $z2
+		incr c
+	}
+	if {$c < $n} {
+		set buf_rdf [string range $buf_rdf $c end]
+	} else {
+		set buf_rdf {}
+	}
+
+	rescan_done $fd buf_rdf $after
+}
+
+proc read_ls_others {fd after} {
+	global buf_rlo
+
+	append buf_rlo [read $fd]
+	set pck [split $buf_rlo "\0"]
+	set buf_rlo [lindex $pck end]
+	foreach p [lrange $pck 0 end-1] {
+		set p [encoding convertfrom utf-8 $p]
+		if {[string index $p end] eq {/}} {
+			set p [string range $p 0 end-1]
+		}
+		merge_state $p ?O
+	}
+	rescan_done $fd buf_rlo $after
+}
+
+proc rescan_done {fd buf after} {
+	global rescan_active current_diff_path
+	global file_states repo_config
+	upvar $buf to_clear
+
+	if {![eof $fd]} return
+	set to_clear {}
+	close $fd
+	if {[incr rescan_active -1] > 0} return
+
+	prune_selection
+	unlock_index
+	display_all_files
+	if {$current_diff_path ne {}} { reshow_diff $after }
+	if {$current_diff_path eq {}} { select_first_diff $after }
+}
+
+proc prune_selection {} {
+	global file_states selected_paths
+
+	foreach path [array names selected_paths] {
+		if {[catch {set still_here $file_states($path)}]} {
+			unset selected_paths($path)
+		}
+	}
+}
+
+######################################################################
+##
+## ui helpers
+
+proc mapicon {w state path} {
+	global all_icons
+
+	if {[catch {set r $all_icons($state$w)}]} {
+		puts "error: no icon for $w state={$state} $path"
+		return file_plain
+	}
+	return $r
+}
+
+proc mapdesc {state path} {
+	global all_descs
+
+	if {[catch {set r $all_descs($state)}]} {
+		puts "error: no desc for state={$state} $path"
+		return $state
+	}
+	return $r
+}
+
+proc ui_status {msg} {
+	global main_status
+	if {[info exists main_status]} {
+		$main_status show $msg
+	}
+}
+
+proc ui_ready {{test {}}} {
+	global main_status
+	if {[info exists main_status]} {
+		$main_status show [mc "Ready."] $test
+	}
+}
+
+proc escape_path {path} {
+	regsub -all {\\} $path "\\\\" path
+	regsub -all "\n" $path "\\n" path
+	return $path
+}
+
+proc short_path {path} {
+	return [escape_path [lindex [file split $path] end]]
+}
+
+set next_icon_id 0
+set null_sha1 [string repeat 0 40]
+
+proc merge_state {path new_state {head_info {}} {index_info {}}} {
+	global file_states next_icon_id null_sha1
+
+	set s0 [string index $new_state 0]
+	set s1 [string index $new_state 1]
+
+	if {[catch {set info $file_states($path)}]} {
+		set state __
+		set icon n[incr next_icon_id]
+	} else {
+		set state [lindex $info 0]
+		set icon [lindex $info 1]
+		if {$head_info eq {}}  {set head_info  [lindex $info 2]}
+		if {$index_info eq {}} {set index_info [lindex $info 3]}
+	}
+
+	if     {$s0 eq {?}} {set s0 [string index $state 0]} \
+	elseif {$s0 eq {_}} {set s0 _}
+
+	if     {$s1 eq {?}} {set s1 [string index $state 1]} \
+	elseif {$s1 eq {_}} {set s1 _}
+
+	if {$s0 eq {A} && $s1 eq {_} && $head_info eq {}} {
+		set head_info [list 0 $null_sha1]
+	} elseif {$s0 ne {_} && [string index $state 0] eq {_}
+		&& $head_info eq {}} {
+		set head_info $index_info
+	} elseif {$s0 eq {_} && [string index $state 0] ne {_}} {
+		set index_info $head_info
+		set head_info {}
+	}
+
+	set file_states($path) [list $s0$s1 $icon \
+		$head_info $index_info \
+		]
+	return $state
+}
+
+proc display_file_helper {w path icon_name old_m new_m} {
+	global file_lists
+
+	if {$new_m eq {_}} {
+		set lno [lsearch -sorted -exact $file_lists($w) $path]
+		if {$lno >= 0} {
+			set file_lists($w) [lreplace $file_lists($w) $lno $lno]
+			incr lno
+			$w conf -state normal
+			$w delete $lno.0 [expr {$lno + 1}].0
+			$w conf -state disabled
+		}
+	} elseif {$old_m eq {_} && $new_m ne {_}} {
+		lappend file_lists($w) $path
+		set file_lists($w) [lsort -unique $file_lists($w)]
+		set lno [lsearch -sorted -exact $file_lists($w) $path]
+		incr lno
+		$w conf -state normal
+		$w image create $lno.0 \
+			-align center -padx 5 -pady 1 \
+			-name $icon_name \
+			-image [mapicon $w $new_m $path]
+		$w insert $lno.1 "[escape_path $path]\n"
+		$w conf -state disabled
+	} elseif {$old_m ne $new_m} {
+		$w conf -state normal
+		$w image conf $icon_name -image [mapicon $w $new_m $path]
+		$w conf -state disabled
+	}
+}
+
+proc display_file {path state} {
+	global file_states selected_paths
+	global ui_index ui_workdir
+
+	set old_m [merge_state $path $state]
+	set s $file_states($path)
+	set new_m [lindex $s 0]
+	set icon_name [lindex $s 1]
+
+	set o [string index $old_m 0]
+	set n [string index $new_m 0]
+	if {$o eq {U}} {
+		set o _
+	}
+	if {$n eq {U}} {
+		set n _
+	}
+	display_file_helper	$ui_index $path $icon_name $o $n
+
+	if {[string index $old_m 0] eq {U}} {
+		set o U
+	} else {
+		set o [string index $old_m 1]
+	}
+	if {[string index $new_m 0] eq {U}} {
+		set n U
+	} else {
+		set n [string index $new_m 1]
+	}
+	display_file_helper	$ui_workdir $path $icon_name $o $n
+
+	if {$new_m eq {__}} {
+		unset file_states($path)
+		catch {unset selected_paths($path)}
+	}
+}
+
+proc display_all_files_helper {w path icon_name m} {
+	global file_lists
+
+	lappend file_lists($w) $path
+	set lno [expr {[lindex [split [$w index end] .] 0] - 1}]
+	$w image create end \
+		-align center -padx 5 -pady 1 \
+		-name $icon_name \
+		-image [mapicon $w $m $path]
+	$w insert end "[escape_path $path]\n"
+}
+
+set files_warning 0
+proc display_all_files {} {
+	global ui_index ui_workdir
+	global file_states file_lists
+	global last_clicked
+	global files_warning
+
+	$ui_index conf -state normal
+	$ui_workdir conf -state normal
+
+	$ui_index delete 0.0 end
+	$ui_workdir delete 0.0 end
+	set last_clicked {}
+
+	set file_lists($ui_index) [list]
+	set file_lists($ui_workdir) [list]
+
+	set to_display [lsort [array names file_states]]
+	set display_limit [get_config gui.maxfilesdisplayed]
+	set displayed 0
+	foreach path $to_display {
+		set s $file_states($path)
+		set m [lindex $s 0]
+		set icon_name [lindex $s 1]
+
+		if {$displayed > $display_limit && [string index $m 1] eq {O} } {
+			if {!$files_warning} {
+				# do not repeatedly warn:
+				set files_warning 1
+				info_popup [mc "Display limit (gui.maxfilesdisplayed = %s) reached, not showing all %s files." \
+					$display_limit [llength $to_display]]
+			}
+			continue
+		}
+
+		set s [string index $m 0]
+		if {$s ne {U} && $s ne {_}} {
+			display_all_files_helper $ui_index $path \
+				$icon_name $s
+		}
+
+		if {[string index $m 0] eq {U}} {
+			set s U
+		} else {
+			set s [string index $m 1]
+		}
+		if {$s ne {_}} {
+			display_all_files_helper $ui_workdir $path \
+				$icon_name $s
+			incr displayed
+		}
+	}
+
+	$ui_index conf -state disabled
+	$ui_workdir conf -state disabled
+}
+
+######################################################################
+##
+## icons
+
+set filemask {
+#define mask_width 14
+#define mask_height 15
+static unsigned char mask_bits[] = {
+   0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f,
+   0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f,
+   0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f};
+}
+
+image create bitmap file_plain -background white -foreground black -data {
+#define plain_width 14
+#define plain_height 15
+static unsigned char plain_bits[] = {
+   0xfe, 0x01, 0x02, 0x03, 0x02, 0x05, 0x02, 0x09, 0x02, 0x1f, 0x02, 0x10,
+   0x02, 0x10, 0x02, 0x10, 0x02, 0x10, 0x02, 0x10, 0x02, 0x10, 0x02, 0x10,
+   0x02, 0x10, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_mod -background white -foreground blue -data {
+#define mod_width 14
+#define mod_height 15
+static unsigned char mod_bits[] = {
+   0xfe, 0x01, 0x02, 0x03, 0x7a, 0x05, 0x02, 0x09, 0x7a, 0x1f, 0x02, 0x10,
+   0xfa, 0x17, 0x02, 0x10, 0xfa, 0x17, 0x02, 0x10, 0xfa, 0x17, 0x02, 0x10,
+   0xfa, 0x17, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_fulltick -background white -foreground "#007000" -data {
+#define file_fulltick_width 14
+#define file_fulltick_height 15
+static unsigned char file_fulltick_bits[] = {
+   0xfe, 0x01, 0x02, 0x1a, 0x02, 0x0c, 0x02, 0x0c, 0x02, 0x16, 0x02, 0x16,
+   0x02, 0x13, 0x00, 0x13, 0x86, 0x11, 0x8c, 0x11, 0xd8, 0x10, 0xf2, 0x10,
+   0x62, 0x10, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_question -background white -foreground black -data {
+#define file_question_width 14
+#define file_question_height 15
+static unsigned char file_question_bits[] = {
+   0xfe, 0x01, 0x02, 0x02, 0xe2, 0x04, 0xf2, 0x09, 0x1a, 0x1b, 0x0a, 0x13,
+   0x82, 0x11, 0xc2, 0x10, 0x62, 0x10, 0x62, 0x10, 0x02, 0x10, 0x62, 0x10,
+   0x62, 0x10, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_removed -background white -foreground red -data {
+#define file_removed_width 14
+#define file_removed_height 15
+static unsigned char file_removed_bits[] = {
+   0xfe, 0x01, 0x02, 0x03, 0x02, 0x05, 0x02, 0x09, 0x02, 0x1f, 0x02, 0x10,
+   0x1a, 0x16, 0x32, 0x13, 0xe2, 0x11, 0xc2, 0x10, 0xe2, 0x11, 0x32, 0x13,
+   0x1a, 0x16, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_merge -background white -foreground blue -data {
+#define file_merge_width 14
+#define file_merge_height 15
+static unsigned char file_merge_bits[] = {
+   0xfe, 0x01, 0x02, 0x03, 0x62, 0x05, 0x62, 0x09, 0x62, 0x1f, 0x62, 0x10,
+   0xfa, 0x11, 0xf2, 0x10, 0x62, 0x10, 0x02, 0x10, 0xfa, 0x17, 0x02, 0x10,
+   0xfa, 0x17, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+image create bitmap file_statechange -background white -foreground green -data {
+#define file_statechange_width 14
+#define file_statechange_height 15
+static unsigned char file_statechange_bits[] = {
+   0xfe, 0x01, 0x02, 0x03, 0x02, 0x05, 0x02, 0x09, 0x02, 0x1f, 0x62, 0x10,
+   0x62, 0x10, 0xba, 0x11, 0xba, 0x11, 0x62, 0x10, 0x62, 0x10, 0x02, 0x10,
+   0x02, 0x10, 0x02, 0x10, 0xfe, 0x1f};
+} -maskdata $filemask
+
+set ui_index .vpane.files.index.list
+set ui_workdir .vpane.files.workdir.list
+
+set all_icons(_$ui_index)   file_plain
+set all_icons(A$ui_index)   file_plain
+set all_icons(M$ui_index)   file_fulltick
+set all_icons(D$ui_index)   file_removed
+set all_icons(U$ui_index)   file_merge
+set all_icons(T$ui_index)   file_statechange
+
+set all_icons(_$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 all_icons(T$ui_workdir) file_statechange
+
+set max_status_desc 0
+foreach i {
+		{__ {mc "Unmodified"}}
+
+		{_M {mc "Modified, not staged"}}
+		{M_ {mc "Staged for commit"}}
+		{MM {mc "Portions staged for commit"}}
+		{MD {mc "Staged for commit, missing"}}
+
+		{_T {mc "File type changed, not staged"}}
+		{MT {mc "File type changed, old type staged for commit"}}
+		{AT {mc "File type changed, old type staged for commit"}}
+		{T_ {mc "File type changed, staged"}}
+		{TM {mc "File type change staged, modification not staged"}}
+		{TD {mc "File type change staged, file missing"}}
+
+		{_O {mc "Untracked, not staged"}}
+		{A_ {mc "Staged for commit"}}
+		{AM {mc "Portions staged for commit"}}
+		{AD {mc "Staged for commit, missing"}}
+
+		{_D {mc "Missing"}}
+		{D_ {mc "Staged for removal"}}
+		{DO {mc "Staged for removal, still present"}}
+
+		{_U {mc "Requires merge resolution"}}
+		{U_ {mc "Requires merge resolution"}}
+		{UU {mc "Requires merge resolution"}}
+		{UM {mc "Requires merge resolution"}}
+		{UD {mc "Requires merge resolution"}}
+		{UT {mc "Requires merge resolution"}}
+	} {
+	set text [eval [lindex $i 1]]
+	if {$max_status_desc < [string length $text]} {
+		set max_status_desc [string length $text]
+	}
+	set all_descs([lindex $i 0]) $text
+}
+unset i
+
+######################################################################
+##
+## util
+
+proc scrollbar2many {list mode args} {
+	foreach w $list {eval $w $mode $args}
+}
+
+proc many2scrollbar {list mode sb top bottom} {
+	$sb set $top $bottom
+	foreach w $list {$w $mode moveto $top}
+}
+
+proc incr_font_size {font {amt 1}} {
+	set sz [font configure $font -size]
+	incr sz $amt
+	font configure $font -size $sz
+	font configure ${font}bold -size $sz
+	font configure ${font}italic -size $sz
+}
+
+######################################################################
+##
+## ui commands
+
+set starting_gitk_msg [mc "Starting gitk... please wait..."]
+
+proc do_gitk {revs {is_submodule false}} {
+	global current_diff_path file_states current_diff_side ui_index
+	global _gitdir _gitworktree
+
+	# -- Always start gitk through whatever we were loaded with.  This
+	#    lets us bypass using shell process on Windows systems.
+	#
+	set exe [_which gitk -script]
+	set cmd [list [info nameofexecutable] $exe]
+	if {$exe eq {}} {
+		error_popup [mc "Couldn't find gitk in PATH"]
+	} else {
+		global env
+
+		set pwd [pwd]
+
+		if {!$is_submodule} {
+			if {![is_bare]} {
+				cd $_gitworktree
+			}
+		} else {
+			cd $current_diff_path
+			if {$revs eq {--}} {
+				set s $file_states($current_diff_path)
+				set old_sha1 {}
+				set new_sha1 {}
+				switch -glob -- [lindex $s 0] {
+				M_ { set old_sha1 [lindex [lindex $s 2] 1] }
+				_M { set old_sha1 [lindex [lindex $s 3] 1] }
+				MM {
+					if {$current_diff_side eq $ui_index} {
+						set old_sha1 [lindex [lindex $s 2] 1]
+						set new_sha1 [lindex [lindex $s 3] 1]
+					} else {
+						set old_sha1 [lindex [lindex $s 3] 1]
+					}
+				}
+				}
+				set revs $old_sha1...$new_sha1
+			}
+			# GIT_DIR and GIT_WORK_TREE for the submodule are not the ones
+			# we've been using for the main repository, so unset them.
+			# TODO we could make life easier (start up faster?) for gitk
+			# by setting these to the appropriate values to allow gitk
+			# to skip the heuristics to find their proper value
+			unset env(GIT_DIR)
+			unset env(GIT_WORK_TREE)
+		}
+		eval exec $cmd $revs "--" "--" &
+
+		set env(GIT_DIR) $_gitdir
+		set env(GIT_WORK_TREE) $_gitworktree
+		cd $pwd
+
+		ui_status $::starting_gitk_msg
+		after 10000 {
+			ui_ready $starting_gitk_msg
+		}
+	}
+}
+
+proc do_git_gui {} {
+	global current_diff_path
+
+	# -- Always start git gui through whatever we were loaded with.  This
+	#    lets us bypass using shell process on Windows systems.
+	#
+	set exe [list [_which git]]
+	if {$exe eq {}} {
+		error_popup [mc "Couldn't find git gui in PATH"]
+	} else {
+		global env
+		global _gitdir _gitworktree
+
+		# see note in do_gitk about unsetting these vars when
+		# running tools in a submodule
+		unset env(GIT_DIR)
+		unset env(GIT_WORK_TREE)
+
+		set pwd [pwd]
+		cd $current_diff_path
+
+		eval exec $exe gui &
+
+		set env(GIT_DIR) $_gitdir
+		set env(GIT_WORK_TREE) $_gitworktree
+		cd $pwd
+
+		ui_status $::starting_gitk_msg
+		after 10000 {
+			ui_ready $starting_gitk_msg
+		}
+	}
+}
+
+proc do_explore {} {
+	global _gitworktree
+	set explorer {}
+	if {[is_Cygwin] || [is_Windows]} {
+		set explorer "explorer.exe"
+	} elseif {[is_MacOSX]} {
+		set explorer "open"
+	} else {
+		# freedesktop.org-conforming system is our best shot
+		set explorer "xdg-open"
+	}
+	eval exec $explorer [list [file nativename $_gitworktree]] &
+}
+
+set is_quitting 0
+set ret_code    1
+
+proc terminate_me {win} {
+	global ret_code
+	if {$win ne {.}} return
+	exit $ret_code
+}
+
+proc do_quit {{rc {1}}} {
+	global ui_comm is_quitting repo_config commit_type
+	global GITGUI_BCK_exists GITGUI_BCK_i
+	global ui_comm_spell
+	global ret_code use_ttk
+
+	if {$is_quitting} return
+	set is_quitting 1
+
+	if {[winfo exists $ui_comm]} {
+		# -- Stash our current commit buffer.
+		#
+		set save [gitdir GITGUI_MSG]
+		if {$GITGUI_BCK_exists && ![$ui_comm edit modified]} {
+			file rename -force [gitdir GITGUI_BCK] $save
+			set GITGUI_BCK_exists 0
+		} else {
+			set msg [string trim [$ui_comm get 0.0 end]]
+			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]
+					fconfigure $fd -encoding utf-8
+					puts -nonewline $fd $msg
+					close $fd
+				}
+			} else {
+				catch {file delete $save}
+			}
+		}
+
+		# -- Cancel our spellchecker if its running.
+		#
+		if {[info exists ui_comm_spell]} {
+			$ui_comm_spell stop
+		}
+
+		# -- Remove our editor backup, its not needed.
+		#
+		after cancel $GITGUI_BCK_i
+		if {$GITGUI_BCK_exists} {
+			catch {file delete [gitdir GITGUI_BCK]}
+		}
+
+		# -- Stash our current window geometry into this repository.
+		#
+		set cfg_wmstate [wm state .]
+		if {[catch {set rc_wmstate $repo_config(gui.wmstate)}]} {
+			set rc_wmstate {}
+		}
+		if {$cfg_wmstate ne $rc_wmstate} {
+			catch {git config gui.wmstate $cfg_wmstate}
+		}
+		if {$cfg_wmstate eq {zoomed}} {
+			# on Windows wm geometry will lie about window
+			# position (but not size) when window is zoomed
+			# restore the window before querying wm geometry
+			wm state . normal
+		}
+		set cfg_geometry [list]
+		lappend cfg_geometry [wm geometry .]
+		if {$use_ttk} {
+			lappend cfg_geometry [.vpane sashpos 0]
+			lappend cfg_geometry [.vpane.files sashpos 0]
+		} else {
+			lappend cfg_geometry [lindex [.vpane sash coord 0] 0]
+			lappend cfg_geometry [lindex [.vpane.files sash coord 0] 1]
+		}
+		if {[catch {set rc_geometry $repo_config(gui.geometry)}]} {
+			set rc_geometry {}
+		}
+		if {$cfg_geometry ne $rc_geometry} {
+			catch {git config gui.geometry $cfg_geometry}
+		}
+	}
+
+	set ret_code $rc
+
+	# Briefly enable send again, working around Tk bug
+	# http://sourceforge.net/tracker/?func=detail&atid=112997&aid=1821174&group_id=12997
+	tk appname [appname]
+
+	destroy .
+}
+
+proc do_rescan {} {
+	rescan ui_ready
+}
+
+proc ui_do_rescan {} {
+	rescan {force_first_diff ui_ready}
+}
+
+proc do_commit {} {
+	commit_tree
+}
+
+proc next_diff {{after {}}} {
+	global next_diff_p next_diff_w next_diff_i
+	show_diff $next_diff_p $next_diff_w {} {} $after
+}
+
+proc find_anchor_pos {lst name} {
+	set lid [lsearch -sorted -exact $lst $name]
+
+	if {$lid == -1} {
+		set lid 0
+		foreach lname $lst {
+			if {$lname >= $name} break
+			incr lid
+		}
+	}
+
+	return $lid
+}
+
+proc find_file_from {flist idx delta path mmask} {
+	global file_states
+
+	set len [llength $flist]
+	while {$idx >= 0 && $idx < $len} {
+		set name [lindex $flist $idx]
+
+		if {$name ne $path && [info exists file_states($name)]} {
+			set state [lindex $file_states($name) 0]
+
+			if {$mmask eq {} || [regexp $mmask $state]} {
+				return $idx
+			}
+		}
+
+		incr idx $delta
+	}
+
+	return {}
+}
+
+proc find_next_diff {w path {lno {}} {mmask {}}} {
+	global next_diff_p next_diff_w next_diff_i
+	global file_lists ui_index ui_workdir
+
+	set flist $file_lists($w)
+	if {$lno eq {}} {
+		set lno [find_anchor_pos $flist $path]
+	} else {
+		incr lno -1
+	}
+
+	if {$mmask ne {} && ![regexp {(^\^)|(\$$)} $mmask]} {
+		if {$w eq $ui_index} {
+			set mmask "^$mmask"
+		} else {
+			set mmask "$mmask\$"
+		}
+	}
+
+	set idx [find_file_from $flist $lno 1 $path $mmask]
+	if {$idx eq {}} {
+		incr lno -1
+		set idx [find_file_from $flist $lno -1 $path $mmask]
+	}
+
+	if {$idx ne {}} {
+		set next_diff_w $w
+		set next_diff_p [lindex $flist $idx]
+		set next_diff_i [expr {$idx+1}]
+		return 1
+	} else {
+		return 0
+	}
+}
+
+proc next_diff_after_action {w path {lno {}} {mmask {}}} {
+	global current_diff_path
+
+	if {$path ne $current_diff_path} {
+		return {}
+	} elseif {[find_next_diff $w $path $lno $mmask]} {
+		return {next_diff;}
+	} else {
+		return {reshow_diff;}
+	}
+}
+
+proc select_first_diff {after} {
+	global ui_workdir
+
+	if {[find_next_diff $ui_workdir {} 1 {^_?U}] ||
+	    [find_next_diff $ui_workdir {} 1 {[^O]$}]} {
+		next_diff $after
+	} else {
+		uplevel #0 $after
+	}
+}
+
+proc force_first_diff {after} {
+	global ui_workdir current_diff_path file_states
+
+	if {[info exists file_states($current_diff_path)]} {
+		set state [lindex $file_states($current_diff_path) 0]
+	} else {
+		set state {OO}
+	}
+
+	set reselect 0
+	if {[string first {U} $state] >= 0} {
+		# Already a conflict, do nothing
+	} elseif {[find_next_diff $ui_workdir $current_diff_path {} {^_?U}]} {
+		set reselect 1
+	} elseif {[string index $state 1] ne {O}} {
+		# Already a diff & no conflicts, do nothing
+	} elseif {[find_next_diff $ui_workdir $current_diff_path {} {[^O]$}]} {
+		set reselect 1
+	}
+
+	if {$reselect} {
+		next_diff $after
+	} else {
+		uplevel #0 $after
+	}
+}
+
+proc toggle_or_diff {mode w args} {
+	global file_states file_lists current_diff_path ui_index ui_workdir
+	global last_clicked selected_paths
+
+	if {$mode eq "click"} {
+		foreach {x y} $args break
+		set pos [split [$w index @$x,$y] .]
+		foreach {lno col} $pos break
+	} else {
+		if {$mode eq "toggle"} {
+			if {$w eq $ui_workdir} {
+				do_add_selection
+				set last_clicked {}
+				return
+			}
+			if {$w eq $ui_index} {
+				do_unstage_selection
+				set last_clicked {}
+				return
+			}
+		}
+
+		if {$last_clicked ne {}} {
+			set lno [lindex $last_clicked 1]
+		} else {
+			if {![info exists file_lists]
+				|| ![info exists file_lists($w)]
+				|| [llength $file_lists($w)] == 0} {
+				set last_clicked {}
+				return
+			}
+			set lno [expr {int([lindex [$w tag ranges in_diff] 0])}]
+		}
+		if {$mode eq "toggle"} {
+			set col 0; set y 2
+		} else {
+			incr lno [expr {$mode eq "up" ? -1 : 1}]
+			set col 1
+		}
+	}
+
+	if {![info exists file_lists]
+		|| ![info exists file_lists($w)]
+		|| [llength $file_lists($w)] < $lno - 1} {
+		set path {}
+	} else {
+		set path [lindex $file_lists($w) [expr {$lno - 1}]]
+	}
+	if {$path eq {}} {
+		set last_clicked {}
+		return
+	}
+
+	set last_clicked [list $w $lno]
+	focus $w
+	array unset selected_paths
+	$ui_index tag remove in_sel 0.0 end
+	$ui_workdir tag remove in_sel 0.0 end
+
+	# Determine the state of the file
+	if {[info exists file_states($path)]} {
+		set state [lindex $file_states($path) 0]
+	} else {
+		set state {__}
+	}
+
+	# Restage the file, or simply show the diff
+	if {$col == 0 && $y > 1} {
+		# Conflicts need special handling
+		if {[string first {U} $state] >= 0} {
+			# $w must always be $ui_workdir, but...
+			if {$w ne $ui_workdir} { set lno {} }
+			merge_stage_workdir $path $lno
+			return
+		}
+
+		if {[string index $state 1] eq {O}} {
+			set mmask {}
+		} else {
+			set mmask {[^O]}
+		}
+
+		set after [next_diff_after_action $w $path $lno $mmask]
+
+		if {$w eq $ui_index} {
+			update_indexinfo \
+				"Unstaging [short_path $path] from commit" \
+				[list $path] \
+				[concat $after [list ui_ready]]
+		} elseif {$w eq $ui_workdir} {
+			update_index \
+				"Adding [short_path $path]" \
+				[list $path] \
+				[concat $after [list ui_ready]]
+		}
+	} else {
+		set selected_paths($path) 1
+		show_diff $path $w $lno
+	}
+}
+
+proc add_one_to_selection {w x y} {
+	global file_lists last_clicked selected_paths
+
+	set lno [lindex [split [$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
+	}
+	if {$in_sel} {
+		unset selected_paths($path)
+		$w tag remove in_sel $lno.0 [expr {$lno + 1}].0
+	} else {
+		set selected_paths($path) 1
+		$w tag add in_sel $lno.0 [expr {$lno + 1}].0
+	}
+}
+
+proc add_range_to_selection {w x y} {
+	global file_lists last_clicked selected_paths
+
+	if {[lindex $last_clicked 0] ne $w} {
+		toggle_or_diff click $w $x $y
+		return
+	}
+
+	set lno [lindex [split [$w index @$x,$y] .] 0]
+	set lc [lindex $last_clicked 1]
+	if {$lc < $lno} {
+		set begin $lc
+		set end $lno
+	} else {
+		set begin $lno
+		set end $lc
+	}
+
+	foreach path [lrange $file_lists($w) \
+		[expr {$begin - 1}] \
+		[expr {$end - 1}]] {
+		set selected_paths($path) 1
+	}
+	$w tag add in_sel $begin.0 [expr {$end + 1}].0
+}
+
+proc show_more_context {} {
+	global repo_config
+	if {$repo_config(gui.diffcontext) < 99} {
+		incr repo_config(gui.diffcontext)
+		reshow_diff
+	}
+}
+
+proc show_less_context {} {
+	global repo_config
+	if {$repo_config(gui.diffcontext) > 1} {
+		incr repo_config(gui.diffcontext) -1
+		reshow_diff
+	}
+}
+
+######################################################################
+##
+## ui construction
+
+set ui_comm {}
+
+# -- Menu Bar
+#
+menu .mbar -tearoff 0
+if {[is_MacOSX]} {
+	# -- Apple Menu (Mac OS X only)
+	#
+	.mbar add cascade -label Apple -menu .mbar.apple
+	menu .mbar.apple
+}
+.mbar add cascade -label [mc Repository] -menu .mbar.repository
+.mbar add cascade -label [mc Edit] -menu .mbar.edit
+if {[is_enabled branch]} {
+	.mbar add cascade -label [mc Branch] -menu .mbar.branch
+}
+if {[is_enabled multicommit] || [is_enabled singlecommit]} {
+	.mbar add cascade -label [mc Commit@@noun] -menu .mbar.commit
+}
+if {[is_enabled transport]} {
+	.mbar add cascade -label [mc Merge] -menu .mbar.merge
+	.mbar add cascade -label [mc Remote] -menu .mbar.remote
+}
+if {[is_enabled multicommit] || [is_enabled singlecommit]} {
+	.mbar add cascade -label [mc Tools] -menu .mbar.tools
+}
+
+# -- Repository Menu
+#
+menu .mbar.repository
+
+if {![is_bare]} {
+	.mbar.repository add command \
+		-label [mc "Explore Working Copy"] \
+		-command {do_explore}
+}
+
+if {[is_Windows]} {
+	.mbar.repository add command \
+		-label [mc "Git Bash"] \
+		-command {eval exec [auto_execok start] \
+					  [list "Git Bash" bash --login -l &]}
+}
+
+if {[is_Windows] || ![is_bare]} {
+	.mbar.repository add separator
+}
+
+.mbar.repository add command \
+	-label [mc "Browse Current Branch's Files"] \
+	-command {browser::new $current_branch}
+set ui_browse_current [.mbar.repository index last]
+.mbar.repository add command \
+	-label [mc "Browse Branch Files..."] \
+	-command browser_open::dialog
+.mbar.repository add separator
+
+.mbar.repository add command \
+	-label [mc "Visualize Current Branch's History"] \
+	-command {do_gitk $current_branch}
+set ui_visualize_current [.mbar.repository index last]
+.mbar.repository add command \
+	-label [mc "Visualize All Branch History"] \
+	-command {do_gitk --all}
+.mbar.repository add separator
+
+proc current_branch_write {args} {
+	global current_branch
+	.mbar.repository entryconf $::ui_browse_current \
+		-label [mc "Browse %s's Files" $current_branch]
+	.mbar.repository entryconf $::ui_visualize_current \
+		-label [mc "Visualize %s's History" $current_branch]
+}
+trace add variable current_branch write current_branch_write
+
+if {[is_enabled multicommit]} {
+	.mbar.repository add command -label [mc "Database Statistics"] \
+		-command do_stats
+
+	.mbar.repository add command -label [mc "Compress Database"] \
+		-command do_gc
+
+	.mbar.repository add command -label [mc "Verify Database"] \
+		-command do_fsck_objects
+
+	.mbar.repository add separator
+
+	if {[is_Cygwin]} {
+		.mbar.repository add command \
+			-label [mc "Create Desktop Icon"] \
+			-command do_cygwin_shortcut
+	} elseif {[is_Windows]} {
+		.mbar.repository add command \
+			-label [mc "Create Desktop Icon"] \
+			-command do_windows_shortcut
+	} elseif {[is_MacOSX]} {
+		.mbar.repository add command \
+			-label [mc "Create Desktop Icon"] \
+			-command do_macosx_app
+	}
+}
+
+if {[is_MacOSX]} {
+	proc ::tk::mac::Quit {args} { do_quit }
+} else {
+	.mbar.repository add command -label [mc Quit] \
+		-command do_quit \
+		-accelerator $M1T-Q
+}
+
+# -- Edit Menu
+#
+menu .mbar.edit
+.mbar.edit add command -label [mc Undo] \
+	-command {catch {[focus] edit undo}} \
+	-accelerator $M1T-Z
+.mbar.edit add command -label [mc Redo] \
+	-command {catch {[focus] edit redo}} \
+	-accelerator $M1T-Y
+.mbar.edit add separator
+.mbar.edit add command -label [mc Cut] \
+	-command {catch {tk_textCut [focus]}} \
+	-accelerator $M1T-X
+.mbar.edit add command -label [mc Copy] \
+	-command {catch {tk_textCopy [focus]}} \
+	-accelerator $M1T-C
+.mbar.edit add command -label [mc Paste] \
+	-command {catch {tk_textPaste [focus]; [focus] see insert}} \
+	-accelerator $M1T-V
+.mbar.edit add command -label [mc Delete] \
+	-command {catch {[focus] delete sel.first sel.last}} \
+	-accelerator Del
+.mbar.edit add separator
+.mbar.edit add command -label [mc "Select All"] \
+	-command {catch {[focus] tag add sel 0.0 end}} \
+	-accelerator $M1T-A
+
+# -- Branch Menu
+#
+if {[is_enabled branch]} {
+	menu .mbar.branch
+
+	.mbar.branch add command -label [mc "Create..."] \
+		-command branch_create::dialog \
+		-accelerator $M1T-N
+	lappend disable_on_lock [list .mbar.branch entryconf \
+		[.mbar.branch index last] -state]
+
+	.mbar.branch add command -label [mc "Checkout..."] \
+		-command branch_checkout::dialog \
+		-accelerator $M1T-O
+	lappend disable_on_lock [list .mbar.branch entryconf \
+		[.mbar.branch index last] -state]
+
+	.mbar.branch add command -label [mc "Rename..."] \
+		-command branch_rename::dialog
+	lappend disable_on_lock [list .mbar.branch entryconf \
+		[.mbar.branch index last] -state]
+
+	.mbar.branch add command -label [mc "Delete..."] \
+		-command branch_delete::dialog
+	lappend disable_on_lock [list .mbar.branch entryconf \
+		[.mbar.branch index last] -state]
+
+	.mbar.branch add command -label [mc "Reset..."] \
+		-command merge::reset_hard
+	lappend disable_on_lock [list .mbar.branch entryconf \
+		[.mbar.branch index last] -state]
+}
+
+# -- Commit Menu
+#
+proc commit_btn_caption {} {
+	if {[is_enabled nocommit]} {
+		return [mc "Done"]
+	} else {
+		return [mc Commit@@verb]
+	}
+}
+
+if {[is_enabled multicommit] || [is_enabled singlecommit]} {
+	menu .mbar.commit
+
+	if {![is_enabled nocommit]} {
+		.mbar.commit add radiobutton \
+			-label [mc "New Commit"] \
+			-command do_select_commit_type \
+			-variable selected_commit_type \
+			-value new
+		lappend disable_on_lock \
+			[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+		.mbar.commit add radiobutton \
+			-label [mc "Amend Last Commit"] \
+			-command do_select_commit_type \
+			-variable selected_commit_type \
+			-value amend
+		lappend disable_on_lock \
+			[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+		.mbar.commit add separator
+	}
+
+	.mbar.commit add command -label [mc Rescan] \
+		-command ui_do_rescan \
+		-accelerator F5
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+	.mbar.commit add command -label [mc "Stage To Commit"] \
+		-command do_add_selection \
+		-accelerator $M1T-T
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+	.mbar.commit add command -label [mc "Stage Changed Files To Commit"] \
+		-command do_add_all \
+		-accelerator $M1T-I
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+	.mbar.commit add command -label [mc "Unstage From Commit"] \
+		-command do_unstage_selection \
+		-accelerator $M1T-U
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+	.mbar.commit add command -label [mc "Revert Changes"] \
+		-command do_revert_selection \
+		-accelerator $M1T-J
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+
+	.mbar.commit add separator
+
+	.mbar.commit add command -label [mc "Show Less Context"] \
+		-command show_less_context \
+		-accelerator $M1T-\-
+
+	.mbar.commit add command -label [mc "Show More Context"] \
+		-command show_more_context \
+		-accelerator $M1T-=
+
+	.mbar.commit add separator
+
+	if {![is_enabled nocommitmsg]} {
+		.mbar.commit add command -label [mc "Sign Off"] \
+			-command do_signoff \
+			-accelerator $M1T-S
+	}
+
+	.mbar.commit add command -label [commit_btn_caption] \
+		-command do_commit \
+		-accelerator $M1T-Return
+	lappend disable_on_lock \
+		[list .mbar.commit entryconf [.mbar.commit index last] -state]
+}
+
+# -- Merge Menu
+#
+if {[is_enabled branch]} {
+	menu .mbar.merge
+	.mbar.merge add command -label [mc "Local Merge..."] \
+		-command merge::dialog \
+		-accelerator $M1T-M
+	lappend disable_on_lock \
+		[list .mbar.merge entryconf [.mbar.merge index last] -state]
+	.mbar.merge add command -label [mc "Abort Merge..."] \
+		-command merge::reset_hard
+	lappend disable_on_lock \
+		[list .mbar.merge entryconf [.mbar.merge index last] -state]
+}
+
+# -- Transport Menu
+#
+if {[is_enabled transport]} {
+	menu .mbar.remote
+
+	.mbar.remote add command \
+		-label [mc "Add..."] \
+		-command remote_add::dialog \
+		-accelerator $M1T-A
+	.mbar.remote add command \
+		-label [mc "Push..."] \
+		-command do_push_anywhere \
+		-accelerator $M1T-P
+	.mbar.remote add command \
+		-label [mc "Delete Branch..."] \
+		-command remote_branch_delete::dialog
+}
+
+if {[is_MacOSX]} {
+	proc ::tk::mac::ShowPreferences {} {do_options}
+} else {
+	# -- Edit Menu
+	#
+	.mbar.edit add separator
+	.mbar.edit add command -label [mc "Options..."] \
+		-command do_options
+}
+
+# -- Tools Menu
+#
+if {[is_enabled multicommit] || [is_enabled singlecommit]} {
+	set tools_menubar .mbar.tools
+	menu $tools_menubar
+	$tools_menubar add separator
+	$tools_menubar add command -label [mc "Add..."] -command tools_add::dialog
+	$tools_menubar add command -label [mc "Remove..."] -command tools_remove::dialog
+	set tools_tailcnt 3
+	if {[array names repo_config guitool.*.cmd] ne {}} {
+		tools_populate_all
+	}
+}
+
+# -- Help Menu
+#
+.mbar add cascade -label [mc Help] -menu .mbar.help
+menu .mbar.help
+
+if {[is_MacOSX]} {
+	.mbar.apple add command -label [mc "About %s" [appname]] \
+		-command do_about
+	.mbar.apple add separator
+} else {
+	.mbar.help add command -label [mc "About %s" [appname]] \
+		-command do_about
+}
+. configure -menu .mbar
+
+set doc_path [githtmldir]
+if {$doc_path ne {}} {
+	set doc_path [file join $doc_path index.html]
+
+	if {[is_Cygwin]} {
+		set doc_path [exec cygpath --mixed $doc_path]
+	}
+}
+
+if {[file isfile $doc_path]} {
+	set doc_url "file:$doc_path"
+} else {
+	set doc_url {http://www.kernel.org/pub/software/scm/git/docs/}
+}
+
+proc start_browser {url} {
+	git "web--browse" $url
+}
+
+.mbar.help add command -label [mc "Online Documentation"] \
+	-command [list start_browser $doc_url]
+
+.mbar.help add command -label [mc "Show SSH Key"] \
+	-command do_ssh_key
+
+unset doc_path doc_url
+
+# -- Standard bindings
+#
+wm protocol . WM_DELETE_WINDOW do_quit
+bind all <$M1B-Key-q> do_quit
+bind all <$M1B-Key-Q> do_quit
+bind all <$M1B-Key-w> {destroy [winfo toplevel %W]}
+bind all <$M1B-Key-W> {destroy [winfo toplevel %W]}
+
+set subcommand_args {}
+proc usage {} {
+	set s "[mc usage:] $::argv0 $::subcommand $::subcommand_args"
+	if {[tk windowingsystem] eq "win32"} {
+		wm withdraw .
+		tk_messageBox -icon info -message $s \
+			-title [mc "Usage"]
+	} else {
+		puts stderr $s
+	}
+	exit 1
+}
+
+proc normalize_relpath {path} {
+	set elements {}
+	foreach item [file split $path] {
+		if {$item eq {.}} continue
+		if {$item eq {..} && [llength $elements] > 0
+		    && [lindex $elements end] ne {..}} {
+			set elements [lrange $elements 0 end-1]
+			continue
+		}
+		lappend elements $item
+	}
+	return [eval file join $elements]
+}
+
+# -- Not a normal commit type invocation?  Do that instead!
+#
+switch -- $subcommand {
+browser -
+blame {
+	if {$subcommand eq "blame"} {
+		set subcommand_args {[--line=<num>] rev? path}
+	} else {
+		set subcommand_args {rev? path}
+	}
+	if {$argv eq {}} usage
+	set head {}
+	set path {}
+	set jump_spec {}
+	set is_path 0
+	foreach a $argv {
+		set p [file join $_prefix $a]
+
+		if {$is_path || [file exists $p]} {
+			if {$path ne {}} usage
+			set path [normalize_relpath $p]
+			break
+		} elseif {$a eq {--}} {
+			if {$path ne {}} {
+				if {$head ne {}} usage
+				set head $path
+				set path {}
+			}
+			set is_path 1
+		} elseif {[regexp {^--line=(\d+)$} $a a lnum]} {
+			if {$jump_spec ne {} || $head ne {}} usage
+			set jump_spec [list $lnum]
+		} elseif {$head eq {}} {
+			if {$head ne {}} usage
+			set head $a
+			set is_path 1
+		} else {
+			usage
+		}
+	}
+	unset is_path
+
+	if {$head ne {} && $path eq {}} {
+		if {[string index $head 0] eq {/}} {
+			set path [normalize_relpath $head]
+			set head {}
+		} else {
+			set path [normalize_relpath $_prefix$head]
+			set head {}
+		}
+	}
+
+	if {$head eq {}} {
+		load_current_branch
+	} else {
+		if {[regexp {^[0-9a-f]{1,39}$} $head]} {
+			if {[catch {
+					set head [git rev-parse --verify $head]
+				} err]} {
+				if {[tk windowingsystem] eq "win32"} {
+					tk_messageBox -icon error -title [mc Error] -message $err
+				} else {
+					puts stderr $err
+				}
+				exit 1
+			}
+		}
+		set current_branch $head
+	}
+
+	wm deiconify .
+	switch -- $subcommand {
+	browser {
+		if {$jump_spec ne {}} usage
+		if {$head eq {}} {
+			if {$path ne {} && [file isdirectory $path]} {
+				set head $current_branch
+			} else {
+				set head $path
+				set path {}
+			}
+		}
+		browser::new $head $path
+	}
+	blame   {
+		if {$head eq {} && ![file exists $path]} {
+			catch {wm withdraw .}
+			tk_messageBox \
+				-icon error \
+				-type ok \
+				-title [mc "git-gui: fatal error"] \
+				-message [mc "fatal: cannot stat path %s: No such file or directory" $path]
+			exit 1
+		}
+		blame::new $head $path $jump_spec
+	}
+	}
+	return
+}
+citool -
+gui {
+	if {[llength $argv] != 0} {
+		usage
+	}
+	# fall through to setup UI for commits
+}
+default {
+	set err "[mc usage:] $argv0 \[{blame|browser|citool}\]"
+	if {[tk windowingsystem] eq "win32"} {
+		wm withdraw .
+		tk_messageBox -icon error -message $err \
+			-title [mc "Usage"]
+	} else {
+		puts stderr $err
+	}
+	exit 1
+}
+}
+
+# -- Branch Control
+#
+${NS}::frame .branch
+if {!$use_ttk} {.branch configure -borderwidth 1 -relief sunken}
+${NS}::label .branch.l1 \
+	-text [mc "Current Branch:"] \
+	-anchor w \
+	-justify left
+${NS}::label .branch.cb \
+	-textvariable current_branch \
+	-anchor w \
+	-justify left
+pack .branch.l1 -side left
+pack .branch.cb -side left -fill x
+pack .branch -side top -fill x
+
+# -- Main Window Layout
+#
+${NS}::panedwindow .vpane -orient horizontal
+${NS}::panedwindow .vpane.files -orient vertical
+if {$use_ttk} {
+	.vpane add .vpane.files
+} else {
+	.vpane add .vpane.files -sticky nsew -height 100 -width 200
+}
+pack .vpane -anchor n -side top -fill both -expand 1
+
+# -- Working Directory File List
+
+textframe .vpane.files.workdir -height 100 -width 200
+tlabel .vpane.files.workdir.title -text [mc "Unstaged Changes"] \
+	-background lightsalmon -foreground black
+ttext $ui_workdir -background white -foreground black \
+	-borderwidth 0 \
+	-width 20 -height 10 \
+	-wrap none \
+	-takefocus 1 -highlightthickness 1\
+	-cursor $cursor_ptr \
+	-xscrollcommand {.vpane.files.workdir.sx set} \
+	-yscrollcommand {.vpane.files.workdir.sy set} \
+	-state disabled
+${NS}::scrollbar .vpane.files.workdir.sx -orient h -command [list $ui_workdir xview]
+${NS}::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.sx -side bottom -fill x
+pack .vpane.files.workdir.sy -side right -fill y
+pack $ui_workdir -side left -fill both -expand 1
+
+# -- Index File List
+#
+textframe .vpane.files.index -height 100 -width 200
+tlabel .vpane.files.index.title \
+	-text [mc "Staged Changes (Will Commit)"] \
+	-background lightgreen -foreground black
+ttext $ui_index -background white -foreground black \
+	-borderwidth 0 \
+	-width 20 -height 10 \
+	-wrap none \
+	-takefocus 1 -highlightthickness 1\
+	-cursor $cursor_ptr \
+	-xscrollcommand {.vpane.files.index.sx set} \
+	-yscrollcommand {.vpane.files.index.sy set} \
+	-state disabled
+${NS}::scrollbar .vpane.files.index.sx -orient h -command [list $ui_index xview]
+${NS}::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.sx -side bottom -fill x
+pack .vpane.files.index.sy -side right -fill y
+pack $ui_index -side left -fill both -expand 1
+
+# -- Insert the workdir and index into the panes
+#
+.vpane.files add .vpane.files.workdir
+.vpane.files add .vpane.files.index
+if {!$use_ttk} {
+	.vpane.files paneconfigure .vpane.files.workdir -sticky news
+	.vpane.files paneconfigure .vpane.files.index -sticky news
+}
+
+foreach i [list $ui_index $ui_workdir] {
+	rmsel_tag $i
+	$i tag conf in_diff -background [$i tag cget in_sel -background]
+}
+unset i
+
+# -- Diff and Commit Area
+#
+if {$have_tk85} {
+	${NS}::panedwindow .vpane.lower -orient vertical
+	${NS}::frame .vpane.lower.commarea
+	${NS}::frame .vpane.lower.diff -relief sunken -borderwidth 1 -height 500
+	.vpane.lower add .vpane.lower.diff
+	.vpane.lower add .vpane.lower.commarea
+	.vpane add .vpane.lower
+	if {$use_ttk} {
+		.vpane.lower pane .vpane.lower.diff -weight 1
+		.vpane.lower pane .vpane.lower.commarea -weight 0
+	} else {
+		.vpane.lower paneconfigure .vpane.lower.diff -stretch always
+		.vpane.lower paneconfigure .vpane.lower.commarea -stretch never
+	}
+} else {
+	frame .vpane.lower -height 300 -width 400
+	frame .vpane.lower.commarea
+	frame .vpane.lower.diff -relief sunken -borderwidth 1
+	pack .vpane.lower.diff -fill both -expand 1
+	pack .vpane.lower.commarea -side bottom -fill x
+	.vpane add .vpane.lower
+	.vpane paneconfigure .vpane.lower -sticky nsew
+}
+
+# -- Commit Area Buttons
+#
+${NS}::frame .vpane.lower.commarea.buttons
+${NS}::label .vpane.lower.commarea.buttons.l -text {} \
+	-anchor w \
+	-justify left
+pack .vpane.lower.commarea.buttons.l -side top -fill x
+pack .vpane.lower.commarea.buttons -side left -fill y
+
+${NS}::button .vpane.lower.commarea.buttons.rescan -text [mc Rescan] \
+	-command ui_do_rescan
+pack .vpane.lower.commarea.buttons.rescan -side top -fill x
+lappend disable_on_lock \
+	{.vpane.lower.commarea.buttons.rescan conf -state}
+
+${NS}::button .vpane.lower.commarea.buttons.incall -text [mc "Stage Changed"] \
+	-command do_add_all
+pack .vpane.lower.commarea.buttons.incall -side top -fill x
+lappend disable_on_lock \
+	{.vpane.lower.commarea.buttons.incall conf -state}
+
+if {![is_enabled nocommitmsg]} {
+	${NS}::button .vpane.lower.commarea.buttons.signoff -text [mc "Sign Off"] \
+		-command do_signoff
+	pack .vpane.lower.commarea.buttons.signoff -side top -fill x
+}
+
+${NS}::button .vpane.lower.commarea.buttons.commit -text [commit_btn_caption] \
+	-command do_commit
+pack .vpane.lower.commarea.buttons.commit -side top -fill x
+lappend disable_on_lock \
+	{.vpane.lower.commarea.buttons.commit conf -state}
+
+if {![is_enabled nocommit]} {
+	${NS}::button .vpane.lower.commarea.buttons.push -text [mc Push] \
+		-command do_push_anywhere
+	pack .vpane.lower.commarea.buttons.push -side top -fill x
+}
+
+# -- Commit Message Buffer
+#
+${NS}::frame .vpane.lower.commarea.buffer
+${NS}::frame .vpane.lower.commarea.buffer.header
+set ui_comm .vpane.lower.commarea.buffer.frame.t
+set ui_coml .vpane.lower.commarea.buffer.header.l
+
+if {![is_enabled nocommit]} {
+	${NS}::radiobutton .vpane.lower.commarea.buffer.header.new \
+		-text [mc "New Commit"] \
+		-command do_select_commit_type \
+		-variable selected_commit_type \
+		-value new
+	lappend disable_on_lock \
+		[list .vpane.lower.commarea.buffer.header.new conf -state]
+	${NS}::radiobutton .vpane.lower.commarea.buffer.header.amend \
+		-text [mc "Amend Last Commit"] \
+		-command do_select_commit_type \
+		-variable selected_commit_type \
+		-value amend
+	lappend disable_on_lock \
+		[list .vpane.lower.commarea.buffer.header.amend conf -state]
+}
+
+${NS}::label $ui_coml \
+	-anchor w \
+	-justify left
+proc trace_commit_type {varname args} {
+	global ui_coml commit_type
+	switch -glob -- $commit_type {
+	initial       {set txt [mc "Initial Commit Message:"]}
+	amend         {set txt [mc "Amended Commit Message:"]}
+	amend-initial {set txt [mc "Amended Initial Commit Message:"]}
+	amend-merge   {set txt [mc "Amended Merge Commit Message:"]}
+	merge         {set txt [mc "Merge Commit Message:"]}
+	*             {set txt [mc "Commit Message:"]}
+	}
+	$ui_coml conf -text $txt
+}
+trace add variable commit_type write trace_commit_type
+pack $ui_coml -side left -fill x
+
+if {![is_enabled nocommit]} {
+	pack .vpane.lower.commarea.buffer.header.amend -side right
+	pack .vpane.lower.commarea.buffer.header.new -side right
+}
+
+textframe .vpane.lower.commarea.buffer.frame
+ttext $ui_comm -background white -foreground black \
+	-borderwidth 1 \
+	-undo true \
+	-maxundo 20 \
+	-autoseparators true \
+	-takefocus 1 \
+	-highlightthickness 1 \
+	-relief sunken \
+	-width $repo_config(gui.commitmsgwidth) -height 9 -wrap none \
+	-font font_diff \
+	-yscrollcommand {.vpane.lower.commarea.buffer.frame.sby set}
+${NS}::scrollbar .vpane.lower.commarea.buffer.frame.sby \
+	-command [list $ui_comm yview]
+
+pack .vpane.lower.commarea.buffer.frame.sby -side right -fill y
+pack $ui_comm -side left -fill y
+pack .vpane.lower.commarea.buffer.header -side top -fill x
+pack .vpane.lower.commarea.buffer.frame -side left -fill y
+pack .vpane.lower.commarea.buffer -side left -fill y
+
+# -- Commit Message Buffer Context Menu
+#
+set ctxm .vpane.lower.commarea.buffer.ctxm
+menu $ctxm -tearoff 0
+$ctxm add command \
+	-label [mc Cut] \
+	-command {tk_textCut $ui_comm}
+$ctxm add command \
+	-label [mc Copy] \
+	-command {tk_textCopy $ui_comm}
+$ctxm add command \
+	-label [mc Paste] \
+	-command {tk_textPaste $ui_comm}
+$ctxm add command \
+	-label [mc Delete] \
+	-command {catch {$ui_comm delete sel.first sel.last}}
+$ctxm add separator
+$ctxm add command \
+	-label [mc "Select All"] \
+	-command {focus $ui_comm;$ui_comm tag add sel 0.0 end}
+$ctxm add command \
+	-label [mc "Copy All"] \
+	-command {
+		$ui_comm tag add sel 0.0 end
+		tk_textCopy $ui_comm
+		$ui_comm tag remove sel 0.0 end
+	}
+$ctxm add separator
+$ctxm add command \
+	-label [mc "Sign Off"] \
+	-command do_signoff
+set ui_comm_ctxm $ctxm
+
+# -- Diff Header
+#
+proc trace_current_diff_path {varname args} {
+	global current_diff_path diff_actions file_states
+	if {$current_diff_path eq {}} {
+		set s {}
+		set f {}
+		set p {}
+		set o disabled
+	} else {
+		set p $current_diff_path
+		set s [mapdesc [lindex $file_states($p) 0] $p]
+		set f [mc "File:"]
+		set p [escape_path $p]
+		set o normal
+	}
+
+	.vpane.lower.diff.header.status configure -text $s
+	.vpane.lower.diff.header.file configure -text $f
+	.vpane.lower.diff.header.path configure -text $p
+	foreach w $diff_actions {
+		uplevel #0 $w $o
+	}
+}
+trace add variable current_diff_path write trace_current_diff_path
+
+gold_frame .vpane.lower.diff.header
+tlabel .vpane.lower.diff.header.status \
+	-background gold \
+	-foreground black \
+	-width $max_status_desc \
+	-anchor w \
+	-justify left
+tlabel .vpane.lower.diff.header.file \
+	-background gold \
+	-foreground black \
+	-anchor w \
+	-justify left
+tlabel .vpane.lower.diff.header.path \
+	-background gold \
+	-foreground black \
+	-anchor w \
+	-justify left
+pack .vpane.lower.diff.header.status -side left
+pack .vpane.lower.diff.header.file -side left
+pack .vpane.lower.diff.header.path -fill x
+set ctxm .vpane.lower.diff.header.ctxm
+menu $ctxm -tearoff 0
+$ctxm add command \
+	-label [mc Copy] \
+	-command {
+		clipboard clear
+		clipboard append \
+			-format STRING \
+			-type STRING \
+			-- $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"
+
+# -- Diff Body
+#
+textframe .vpane.lower.diff.body
+set ui_diff .vpane.lower.diff.body.t
+ttext $ui_diff -background white -foreground black \
+	-borderwidth 0 \
+	-width 80 -height 5 -wrap none \
+	-font font_diff \
+	-takefocus 1 -highlightthickness 1 \
+	-xscrollcommand {.vpane.lower.diff.body.sbx set} \
+	-yscrollcommand {.vpane.lower.diff.body.sby set} \
+	-state disabled
+catch {$ui_diff configure -tabstyle wordprocessor}
+${NS}::scrollbar .vpane.lower.diff.body.sbx -orient horizontal \
+	-command [list $ui_diff xview]
+${NS}::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
+
+foreach {n c} {0 black 1 red4 2 green4 3 yellow4 4 blue4 5 magenta4 6 cyan4 7 grey60} {
+	$ui_diff tag configure clr4$n -background $c
+	$ui_diff tag configure clri4$n -foreground $c
+	$ui_diff tag configure clr3$n -foreground $c
+	$ui_diff tag configure clri3$n -background $c
+}
+$ui_diff tag configure clr1 -font font_diffbold
+$ui_diff tag configure clr4 -underline 1
+
+$ui_diff tag conf d_info -foreground blue -font font_diffbold
+
+$ui_diff tag conf d_cr -elide true
+$ui_diff tag conf d_@ -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 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 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
+#
+
+proc create_common_diff_popup {ctxm} {
+	$ctxm add command \
+		-label [mc Refresh] \
+		-command reshow_diff
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add command \
+		-label [mc Copy] \
+		-command {tk_textCopy $ui_diff}
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add command \
+		-label [mc "Select All"] \
+		-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 [mc "Copy All"] \
+		-command {
+			$ui_diff tag add sel 0.0 end
+			tk_textCopy $ui_diff
+			$ui_diff tag remove sel 0.0 end
+		}
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add separator
+	$ctxm add command \
+		-label [mc "Decrease Font Size"] \
+		-command {incr_font_size font_diff -1}
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add command \
+		-label [mc "Increase Font Size"] \
+		-command {incr_font_size font_diff 1}
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add separator
+	set emenu $ctxm.enc
+	menu $emenu
+	build_encoding_menu $emenu [list force_diff_encoding]
+	$ctxm add cascade \
+		-label [mc "Encoding"] \
+		-menu $emenu
+	lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+	$ctxm add separator
+	$ctxm add command -label [mc "Options..."] \
+		-command do_options
+}
+
+set ctxm .vpane.lower.diff.body.ctxm
+menu $ctxm -tearoff 0
+$ctxm add command \
+	-label [mc "Apply/Reverse Hunk"] \
+	-command {apply_hunk $cursorX $cursorY}
+set ui_diff_applyhunk [$ctxm index last]
+lappend diff_actions [list $ctxm entryconf $ui_diff_applyhunk -state]
+$ctxm add command \
+	-label [mc "Apply/Reverse Line"] \
+	-command {apply_range_or_line $cursorX $cursorY; do_rescan}
+set ui_diff_applyline [$ctxm index last]
+lappend diff_actions [list $ctxm entryconf $ui_diff_applyline -state]
+$ctxm add separator
+$ctxm add command \
+	-label [mc "Show Less Context"] \
+	-command show_less_context
+lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+$ctxm add command \
+	-label [mc "Show More Context"] \
+	-command show_more_context
+lappend diff_actions [list $ctxm entryconf [$ctxm index last] -state]
+$ctxm add separator
+create_common_diff_popup $ctxm
+
+set ctxmmg .vpane.lower.diff.body.ctxmmg
+menu $ctxmmg -tearoff 0
+$ctxmmg add command \
+	-label [mc "Run Merge Tool"] \
+	-command {merge_resolve_tool}
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add separator
+$ctxmmg add command \
+	-label [mc "Use Remote Version"] \
+	-command {merge_resolve_one 3}
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add command \
+	-label [mc "Use Local Version"] \
+	-command {merge_resolve_one 2}
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add command \
+	-label [mc "Revert To Base"] \
+	-command {merge_resolve_one 1}
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add separator
+$ctxmmg add command \
+	-label [mc "Show Less Context"] \
+	-command show_less_context
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add command \
+	-label [mc "Show More Context"] \
+	-command show_more_context
+lappend diff_actions [list $ctxmmg entryconf [$ctxmmg index last] -state]
+$ctxmmg add separator
+create_common_diff_popup $ctxmmg
+
+set ctxmsm .vpane.lower.diff.body.ctxmsm
+menu $ctxmsm -tearoff 0
+$ctxmsm add command \
+	-label [mc "Visualize These Changes In The Submodule"] \
+	-command {do_gitk -- true}
+lappend diff_actions [list $ctxmsm entryconf [$ctxmsm index last] -state]
+$ctxmsm add command \
+	-label [mc "Visualize Current Branch History In The Submodule"] \
+	-command {do_gitk {} true}
+lappend diff_actions [list $ctxmsm entryconf [$ctxmsm index last] -state]
+$ctxmsm add command \
+	-label [mc "Visualize All Branch History In The Submodule"] \
+	-command {do_gitk --all true}
+lappend diff_actions [list $ctxmsm entryconf [$ctxmsm index last] -state]
+$ctxmsm add separator
+$ctxmsm add command \
+	-label [mc "Start git gui In The Submodule"] \
+	-command {do_git_gui}
+lappend diff_actions [list $ctxmsm entryconf [$ctxmsm index last] -state]
+$ctxmsm add separator
+create_common_diff_popup $ctxmsm
+
+proc has_textconv {path} {
+	if {[is_config_false gui.textconv]} {
+		return 0
+	}
+	set filter [gitattr $path diff set]
+	set textconv [get_config [join [list diff $filter textconv] .]]
+	if {$filter ne {set} && $textconv ne {}} {
+		return 1
+	} else {
+		return 0
+	}
+}
+
+proc popup_diff_menu {ctxm ctxmmg ctxmsm x y X Y} {
+	global current_diff_path file_states
+	set ::cursorX $x
+	set ::cursorY $y
+	if {[info exists file_states($current_diff_path)]} {
+		set state [lindex $file_states($current_diff_path) 0]
+	} else {
+		set state {__}
+	}
+	if {[string first {U} $state] >= 0} {
+		tk_popup $ctxmmg $X $Y
+	} elseif {$::is_submodule_diff} {
+		tk_popup $ctxmsm $X $Y
+	} else {
+		set has_range [expr {[$::ui_diff tag nextrange sel 0.0] != {}}]
+		if {$::ui_index eq $::current_diff_side} {
+			set l [mc "Unstage Hunk From Commit"]
+			if {$has_range} {
+				set t [mc "Unstage Lines From Commit"]
+			} else {
+				set t [mc "Unstage Line From Commit"]
+			}
+		} else {
+			set l [mc "Stage Hunk For Commit"]
+			if {$has_range} {
+				set t [mc "Stage Lines For Commit"]
+			} else {
+				set t [mc "Stage Line For Commit"]
+			}
+		}
+		if {$::is_3way_diff
+			|| $current_diff_path eq {}
+			|| {__} eq $state
+			|| {_O} eq $state
+			|| [string match {?T} $state]
+			|| [string match {T?} $state]
+			|| [has_textconv $current_diff_path]} {
+			set s disabled
+		} else {
+			set s normal
+		}
+		$ctxm entryconf $::ui_diff_applyhunk -state $s -label $l
+		$ctxm entryconf $::ui_diff_applyline -state $s -label $t
+		tk_popup $ctxm $X $Y
+	}
+}
+bind_button3 $ui_diff [list popup_diff_menu $ctxm $ctxmmg $ctxmsm %x %y %X %Y]
+
+# -- Status Bar
+#
+set main_status [::status_bar::new .status]
+pack .status -anchor w -side bottom -fill x
+$main_status show [mc "Initializing..."]
+
+# -- Load geometry
+#
+proc on_ttk_pane_mapped {w pane pos} {
+	bind $w <Map> {}
+	after 0 [list after idle [list $w sashpos $pane $pos]]
+}
+proc on_tk_pane_mapped {w pane x y} {
+	bind $w <Map> {}
+	after 0 [list after idle [list $w sash place $pane $x $y]]
+}
+proc on_application_mapped {} {
+	global repo_config use_ttk
+	bind . <Map> {}
+	set gm $repo_config(gui.geometry)
+	if {$use_ttk} {
+		bind .vpane <Map> \
+		    [list on_ttk_pane_mapped %W 0 [lindex $gm 1]]
+		bind .vpane.files <Map> \
+		    [list on_ttk_pane_mapped %W 0 [lindex $gm 2]]
+	} else {
+		bind .vpane <Map> \
+		    [list on_tk_pane_mapped %W 0 \
+			 [lindex $gm 1] \
+			 [lindex [.vpane sash coord 0] 1]]
+		bind .vpane.files <Map> \
+		    [list on_tk_pane_mapped %W 0 \
+			 [lindex [.vpane.files sash coord 0] 0] \
+			 [lindex $gm 2]]
+	}
+	wm geometry . [lindex $gm 0]
+}
+if {[info exists repo_config(gui.geometry)]} {
+	bind . <Map> [list on_application_mapped]
+	wm geometry . [lindex $repo_config(gui.geometry) 0]
+}
+
+# -- Load window state
+#
+if {[info exists repo_config(gui.wmstate)]} {
+	catch {wm state . $repo_config(gui.wmstate)}
+}
+
+# -- Key Bindings
+#
+bind $ui_comm <$M1B-Key-Return> {do_commit;break}
+bind $ui_comm <$M1B-Key-t> {do_add_selection;break}
+bind $ui_comm <$M1B-Key-T> {do_add_selection;break}
+bind $ui_comm <$M1B-Key-u> {do_unstage_selection;break}
+bind $ui_comm <$M1B-Key-U> {do_unstage_selection;break}
+bind $ui_comm <$M1B-Key-j> {do_revert_selection;break}
+bind $ui_comm <$M1B-Key-J> {do_revert_selection;break}
+bind $ui_comm <$M1B-Key-i> {do_add_all;break}
+bind $ui_comm <$M1B-Key-I> {do_add_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 $ui_comm <$M1B-Key-minus> {show_less_context;break}
+bind $ui_comm <$M1B-Key-KP_Subtract> {show_less_context;break}
+bind $ui_comm <$M1B-Key-equal> {show_more_context;break}
+bind $ui_comm <$M1B-Key-plus> {show_more_context;break}
+bind $ui_comm <$M1B-Key-KP_Add> {show_more_context;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 $ui_diff <$M1B-Key-j> {do_revert_selection;break}
+bind $ui_diff <$M1B-Key-J> {do_revert_selection;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 $ui_diff <Key-k>         {catch {%W yview scroll -1 units};break}
+bind $ui_diff <Key-j>         {catch {%W yview scroll  1 units};break}
+bind $ui_diff <Key-h>         {catch {%W xview scroll -1 units};break}
+bind $ui_diff <Key-l>         {catch {%W xview scroll  1 units};break}
+bind $ui_diff <Control-Key-b> {catch {%W yview scroll -1 pages};break}
+bind $ui_diff <Control-Key-f> {catch {%W yview scroll  1 pages};break}
+bind $ui_diff <Button-1>   {focus %W}
+
+if {[is_enabled branch]} {
+	bind . <$M1B-Key-n> branch_create::dialog
+	bind . <$M1B-Key-N> branch_create::dialog
+	bind . <$M1B-Key-o> branch_checkout::dialog
+	bind . <$M1B-Key-O> branch_checkout::dialog
+	bind . <$M1B-Key-m> merge::dialog
+	bind . <$M1B-Key-M> merge::dialog
+}
+if {[is_enabled transport]} {
+	bind . <$M1B-Key-p> do_push_anywhere
+	bind . <$M1B-Key-P> do_push_anywhere
+}
+
+bind .   <Key-F5>     ui_do_rescan
+bind .   <$M1B-Key-r> ui_do_rescan
+bind .   <$M1B-Key-R> ui_do_rescan
+bind .   <$M1B-Key-s> do_signoff
+bind .   <$M1B-Key-S> do_signoff
+bind .   <$M1B-Key-t> { toggle_or_diff toggle %W }
+bind .   <$M1B-Key-T> { toggle_or_diff toggle %W }
+bind .   <$M1B-Key-u> { toggle_or_diff toggle %W }
+bind .   <$M1B-Key-U> { toggle_or_diff toggle %W }
+bind .   <$M1B-Key-j> do_revert_selection
+bind .   <$M1B-Key-J> do_revert_selection
+bind .   <$M1B-Key-i> do_add_all
+bind .   <$M1B-Key-I> do_add_all
+bind .   <$M1B-Key-minus> {show_less_context;break}
+bind .   <$M1B-Key-KP_Subtract> {show_less_context;break}
+bind .   <$M1B-Key-equal> {show_more_context;break}
+bind .   <$M1B-Key-plus> {show_more_context;break}
+bind .   <$M1B-Key-KP_Add> {show_more_context;break}
+bind .   <$M1B-Key-Return> do_commit
+bind .   <$M1B-Key-KP_Enter> do_commit
+foreach i [list $ui_index $ui_workdir] {
+	bind $i <Button-1>       { toggle_or_diff click %W %x %y; break }
+	bind $i <$M1B-Button-1>  { add_one_to_selection %W %x %y; break }
+	bind $i <Shift-Button-1> { add_range_to_selection %W %x %y; break }
+	bind $i <Key-Up>         { toggle_or_diff up %W; break }
+	bind $i <Key-Down>       { toggle_or_diff down %W; break }
+}
+unset i
+
+set file_lists($ui_index) [list]
+set file_lists($ui_workdir) [list]
+
+wm title . "[appname] ([reponame]) [file normalize $_gitworktree]"
+focus -force $ui_comm
+
+# -- Warn the user about environmental problems.  Cygwin's Tcl
+#    does *not* pass its env array onto any processes it spawns.
+#    This means that git processes get none of our environment.
+#
+if {[is_Cygwin]} {
+	set ignored_env 0
+	set suggest_user {}
+	set msg [mc "Possible environment issues exist.
+
+The following environment variables are probably
+going to be ignored by any Git subprocess run
+by %s:
+
+" [appname]]
+	foreach name [array names env] {
+		switch -regexp -- $name {
+		{^GIT_INDEX_FILE$} -
+		{^GIT_OBJECT_DIRECTORY$} -
+		{^GIT_ALTERNATE_OBJECT_DIRECTORIES$} -
+		{^GIT_DIFF_OPTS$} -
+		{^GIT_EXTERNAL_DIFF$} -
+		{^GIT_PAGER$} -
+		{^GIT_TRACE$} -
+		{^GIT_CONFIG$} -
+		{^GIT_(AUTHOR|COMMITTER)_DATE$} {
+			append msg " - $name\n"
+			incr ignored_env
+		}
+		{^GIT_(AUTHOR|COMMITTER)_(NAME|EMAIL)$} {
+			append msg " - $name\n"
+			incr ignored_env
+			set suggest_user $name
+		}
+		}
+	}
+	if {$ignored_env > 0} {
+		append msg [mc "
+This is due to a known issue with the
+Tcl binary distributed by Cygwin."]
+
+		if {$suggest_user ne {}} {
+			append msg [mc "
+
+A good replacement for %s
+is placing values for the user.name and
+user.email settings into your personal
+~/.gitconfig file.
+" $suggest_user]
+		}
+		warn_popup $msg
+	}
+	unset ignored_env msg suggest_user name
+}
+
+# -- Only initialize complex UI if we are going to stay running.
+#
+if {[is_enabled transport]} {
+	load_all_remotes
+
+	set n [.mbar.remote index end]
+	populate_remotes_menu
+	set n [expr {[.mbar.remote index end] - $n}]
+	if {$n > 0} {
+		if {[.mbar.remote type 0] eq "tearoff"} { incr n }
+		.mbar.remote insert $n separator
+	}
+	unset n
+}
+
+if {[winfo exists $ui_comm]} {
+	set GITGUI_BCK_exists [load_message GITGUI_BCK utf-8]
+
+	# -- If both our backup and message files exist use the
+	#    newer of the two files to initialize the buffer.
+	#
+	if {$GITGUI_BCK_exists} {
+		set m [gitdir GITGUI_MSG]
+		if {[file isfile $m]} {
+			if {[file mtime [gitdir GITGUI_BCK]] > [file mtime $m]} {
+				catch {file delete [gitdir GITGUI_MSG]}
+			} else {
+				$ui_comm delete 0.0 end
+				$ui_comm edit reset
+				$ui_comm edit modified false
+				catch {file delete [gitdir GITGUI_BCK]}
+				set GITGUI_BCK_exists 0
+			}
+		}
+		unset m
+	}
+
+	proc backup_commit_buffer {} {
+		global ui_comm GITGUI_BCK_exists
+
+		set m [$ui_comm edit modified]
+		if {$m || $GITGUI_BCK_exists} {
+			set msg [string trim [$ui_comm get 0.0 end]]
+			regsub -all -line {[ \r\t]+$} $msg {} msg
+
+			if {$msg eq {}} {
+				if {$GITGUI_BCK_exists} {
+					catch {file delete [gitdir GITGUI_BCK]}
+					set GITGUI_BCK_exists 0
+				}
+			} elseif {$m} {
+				catch {
+					set fd [open [gitdir GITGUI_BCK] w]
+					fconfigure $fd -encoding utf-8
+					puts -nonewline $fd $msg
+					close $fd
+					set GITGUI_BCK_exists 1
+				}
+			}
+
+			$ui_comm edit modified false
+		}
+
+		set ::GITGUI_BCK_i [after 2000 backup_commit_buffer]
+	}
+
+	backup_commit_buffer
+
+	# -- If the user has aspell available we can drive it
+	#    in pipe mode to spellcheck the commit message.
+	#
+	set spell_cmd [list |]
+	set spell_dict [get_config gui.spellingdictionary]
+	lappend spell_cmd aspell
+	if {$spell_dict ne {}} {
+		lappend spell_cmd --master=$spell_dict
+	}
+	lappend spell_cmd --mode=none
+	lappend spell_cmd --encoding=utf-8
+	lappend spell_cmd pipe
+	if {$spell_dict eq {none}
+	 || [catch {set spell_fd [open $spell_cmd r+]} spell_err]} {
+		bind_button3 $ui_comm [list tk_popup $ui_comm_ctxm %X %Y]
+	} else {
+		set ui_comm_spell [spellcheck::init \
+			$spell_fd \
+			$ui_comm \
+			$ui_comm_ctxm \
+		]
+	}
+	unset -nocomplain spell_cmd spell_fd spell_err spell_dict
+}
+
+lock_index begin-read
+if {![winfo ismapped .]} {
+	wm deiconify .
+}
+after 1 {
+	if {[is_enabled initialamend]} {
+		force_amend
+	} else {
+		do_rescan
+	}
+
+	if {[is_enabled nocommitmsg]} {
+		$ui_comm configure -state disabled -background gray
+	}
+}
+if {[is_enabled multicommit] && ![is_config_false gui.gcwarning]} {
+	after 1000 hint_gc
+}
+if {[is_enabled retcode]} {
+	bind . <Destroy> {+terminate_me %W}
+}
+if {$picked && [is_config_true gui.autoexplore]} {
+	do_explore
+}
+
+# Local variables:
+# mode: tcl
+# indent-tabs-mode: t
+# tab-width: 4
+# End: