merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 194 insertions, 0 deletions

diff --git a/third_party/git/git-gui/lib/class.tcl b/third_party/git/git-gui/lib/class.tcl
new file mode 100644
index 000000000000..f08506f3834a
--- /dev/null
+++ b/third_party/git/git-gui/lib/class.tcl
@@ -0,0 +1,194 @@
+# git-gui simple class/object fake-alike
+# Copyright (C) 2007 Shawn Pearce
+
+proc class {class body} {
+	if {[namespace exists $class]} {
+		error "class $class already declared"
+	}
+	namespace eval $class "
+		variable __nextid     0
+		variable __sealed     0
+		variable __field_list {}
+		variable __field_array
+
+		proc cb {name args} {
+			upvar this this
+			concat \[list ${class}::\$name \$this\] \$args
+		}
+	"
+	namespace eval $class $body
+}
+
+proc field {name args} {
+	set class [uplevel {namespace current}]
+	variable ${class}::__sealed
+	variable ${class}::__field_array
+
+	switch [llength $args] {
+	0 { set new [list $name] }
+	1 { set new [list $name [lindex $args 0]] }
+	default { error "wrong # args: field name value?" }
+	}
+
+	if {$__sealed} {
+		error "class $class is sealed (cannot add new fields)"
+	}
+
+	if {[catch {set old $__field_array($name)}]} {
+		variable ${class}::__field_list
+		lappend __field_list $new
+		set __field_array($name) 1
+	} else {
+		error "field $name already declared"
+	}
+}
+
+proc constructor {name params body} {
+	set class [uplevel {namespace current}]
+	set ${class}::__sealed 1
+	variable ${class}::__field_list
+	set mbodyc {}
+
+	append mbodyc {set this } $class
+	append mbodyc {::__o[incr } $class {::__nextid]::__d} \;
+	append mbodyc {create_this } $class \;
+	append mbodyc {set __this [namespace qualifiers $this]} \;
+
+	if {$__field_list ne {}} {
+		append mbodyc {upvar #0}
+		foreach n $__field_list {
+			set n [lindex $n 0]
+			append mbodyc { ${__this}::} $n { } $n
+			regsub -all @$n\\M $body "\${__this}::$n" body
+		}
+		append mbodyc \;
+		foreach n $__field_list {
+			if {[llength $n] == 2} {
+				append mbodyc \
+				{set } [lindex $n 0] { } [list [lindex $n 1]] \;
+			}
+		}
+	}
+	append mbodyc $body
+	namespace eval $class [list proc $name $params $mbodyc]
+}
+
+proc method {name params body {deleted {}} {del_body {}}} {
+	set class [uplevel {namespace current}]
+	set ${class}::__sealed 1
+	variable ${class}::__field_list
+	set params [linsert $params 0 this]
+	set mbodyc {}
+
+	append mbodyc {set __this [namespace qualifiers $this]} \;
+
+	switch $deleted {
+	{} {}
+	ifdeleted {
+		append mbodyc {if {![namespace exists $__this]} }
+		append mbodyc \{ $del_body \; return \} \;
+	}
+	default {
+		error "wrong # args: method name args body (ifdeleted body)?"
+	}
+	}
+
+	set decl {}
+	foreach n $__field_list {
+		set n [lindex $n 0]
+		if {[regexp -- $n\\M $body]} {
+			if {   [regexp -all -- $n\\M $body] == 1
+				&& [regexp -all -- \\\$$n\\M $body] == 1
+				&& [regexp -all -- \\\$$n\\( $body] == 0} {
+				regsub -all \
+					\\\$$n\\M $body \
+					"\[set \${__this}::$n\]" body
+			} else {
+				append decl { ${__this}::} $n { } $n
+				regsub -all @$n\\M $body "\${__this}::$n" body
+			}
+		}
+	}
+	if {$decl ne {}} {
+		append mbodyc {upvar #0} $decl \;
+	}
+	append mbodyc $body
+	namespace eval $class [list proc $name $params $mbodyc]
+}
+
+proc create_this {class} {
+	upvar this this
+	namespace eval [namespace qualifiers $this] [list proc \
+		[namespace tail $this] \
+		[list name args] \
+		"eval \[list ${class}::\$name $this\] \$args" \
+	]
+}
+
+proc delete_this {{t {}}} {
+	if {$t eq {}} {
+		upvar this this
+		set t $this
+	}
+	set t [namespace qualifiers $t]
+	if {[namespace exists $t]} {namespace delete $t}
+}
+
+proc make_dialog {t w args} {
+	upvar $t top $w pfx this this
+	global use_ttk
+	uplevel [linsert $args 0 make_toplevel $t $w]
+	catch {wm attributes $top -type dialog}
+	pave_toplevel $pfx
+}
+
+proc make_toplevel {t w args} {
+	upvar $t top $w pfx this this
+
+	if {[llength $args] % 2} {
+		error "make_toplevel topvar winvar {options}"
+	}
+	set autodelete 1
+	foreach {name value} $args {
+		switch -exact -- $name {
+		-autodelete {set autodelete $value}
+		default     {error "unsupported option $name"}
+		}
+	}
+
+	if {$::root_exists || [winfo ismapped .]} {
+		regsub -all {::} $this {__} w
+		set top .$w
+		set pfx $top
+		toplevel $top
+		set ::root_exists 1
+	} else {
+		set top .
+		set pfx {}
+	}
+
+	if {$autodelete} {
+		wm protocol $top WM_DELETE_WINDOW "
+			[list delete_this $this]
+			[list destroy $top]
+		"
+	}
+}
+
+
+## auto_mkindex support for class/constructor/method
+##
+auto_mkindex_parser::command class {name body} {
+	variable parser
+	variable contextStack
+	set contextStack [linsert $contextStack 0 $name]
+	$parser eval [list _%@namespace eval $name] $body
+	set contextStack [lrange $contextStack 1 end]
+}
+auto_mkindex_parser::command constructor {name args} {
+	variable index
+	variable scriptFile
+	append index [list set auto_index([fullname $name])] \
+		[format { [list source [file join $dir %s]]} \
+		[file split $scriptFile]] "\n"
+}