+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
+}
+
+set _real_git_version $_git_version
+regsub -- {-dirty$} $_git_version {} _git_version
+regsub {\.[0-9]+\.g[0-9a-f]+$} $_git_version {} _git_version
+regsub {\.rc[0-9]+$} $_git_version {} _git_version
+regsub {\.GIT$} $_git_version {} _git_version
+regsub {\.[a-zA-Z]+\.[0-9]+$} $_git_version {} _git_version
+
+if {![regexp {^[1-9]+(\.[0-9]+)+$} $_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
+ 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
+ }
+ }
+ }
+ }
+ 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
+ }
+ }
+ }
+ close $fd_rc
+ }
+ }
+}
+
+proc load_config {include_global} {
+ global repo_config global_config default_config
+
+ if {$include_global} {
+ _parse_config global_config --global
+ }
+ _parse_config repo_config
+
+ foreach name [array names default_config] {
+ if {[catch {set v $global_config($name)}]} {
+ set global_config($name) $default_config($name)
+ }
+ if {[catch {set v $repo_config($name)}]} {
+ set repo_config($name) $default_config($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