git-gui: fix incorrect use of Tcl append command

Fix wrong use of append command in strings marked for translation.
According to Tcl/Tk Documentation [1],
	append varName ?value value value ...?
appends all value arguments to the current value of variable varName.
This means that
	append "[appname] ([reponame]): " [mc "File Viewer"]
is setting a variable named "[appname] ([reponame]): " to the output of
[mc "File Viewer"], rather than returning the concatenation of both
expressions as one might expect.

The format for some strings enables, for instance, a French translator
to translate like "%s (%s) : Create Branch" (space before colon).
Conversely, strings already translated will be marked as fuzzy and the
translator must update them herself.

For some cases, use alternative way for concatenation instead of using
strcat procedure defined in git-gui.sh.

Reference: 31bb1d1 ("git-gui: Paper bag fix missing translated strings",
2007-09-14) fixes the same issue slightly differently.

[1] http://www.tcl.tk/man/tcl/TclCmd/append.htm

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>

lib/blame.tcl

@@ -70,7 +70,7 @@ constructor new {i_commit i_path i_jump} {
 	set path   $i_path
 
 	make_toplevel top w
-	wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
+	wm title $top [mc "%s (%s): File Viewer" [appname] [reponame]]
 
 	set font_w [font measure font_diff "0"]
 

lib/branch_checkout.tcl

@@ -13,7 +13,7 @@ constructor dialog {} {
 	global use_ttk NS
 	make_dialog top w
 	wm withdraw $w
-	wm title $top [append "[appname] ([reponame]): " [mc "Checkout Branch"]]
+	wm title $top [mc "%s (%s): Checkout Branch" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/branch_create.tcl

@@ -20,7 +20,7 @@ constructor dialog {} {
 
 	make_dialog top w
 	wm withdraw $w
-	wm title $top [append "[appname] ([reponame]): " [mc "Create Branch"]]
+	wm title $top [mc "%s (%s): Create Branch" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/branch_delete.tcl

@@ -13,7 +13,7 @@ constructor dialog {} {
 
 	make_dialog top w
 	wm withdraw $w
-	wm title $top [append "[appname] ([reponame]): " [mc "Delete Branch"]]
+	wm title $top [mc "%s (%s): Delete Branch" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/branch_rename.tcl

@@ -12,7 +12,7 @@ constructor dialog {} {
 
 	make_dialog top w
 	wm withdraw $w
-	wm title $top [append "[appname] ([reponame]): " [mc "Rename Branch"]]
+	wm title $top [mc "%s (%s): Rename Branch" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/browser.tcl

@@ -24,7 +24,7 @@ constructor new {commit {path {}}} {
 	global cursor_ptr M1B use_ttk NS
 	make_dialog top w
 	wm withdraw $top
-	wm title $top [append "[appname] ([reponame]): " [mc "File Browser"]]
+	wm title $top [mc "%s (%s): File Browser" [appname] [reponame]]
 
 	if {$path ne {}} {
 		if {[string index $path end] ne {/}} {
@@ -272,7 +272,7 @@ constructor dialog {} {
 	global use_ttk NS
 	make_dialog top w
 	wm withdraw $top
-	wm title $top [append "[appname] ([reponame]): " [mc "Browse Branch Files"]]
+	wm title $top [mc "%s (%s): Browse Branch Files" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 		wm transient $top .

lib/database.tcl

@@ -63,7 +63,7 @@ proc do_stats {} {
 	bind $w <Visibility> "grab $w; focus $w.buttons.close"
 	bind $w <Key-Escape> [list destroy $w]
 	bind $w <Key-Return> [list destroy $w]
-	wm title $w [append "[appname] ([reponame]): " [mc "Database Statistics"]]
+	wm title $w [mc "%s (%s): Database Statistics" [appname] [reponame]]
 	wm deiconify $w
 	tkwait window $w
 }

lib/diff.tcl

@@ -223,10 +223,9 @@ proc show_other_diff {path w m cont_info} {
 		}
 		$ui_diff conf -state normal
 		if {$type eq {submodule}} {
-			$ui_diff insert end [append \
-				"* " \
-				[mc "Git Repository (subproject)"] \
-				"\n"] d_info
+			$ui_diff insert end \
+				"* [mc "Git Repository (subproject)"]\n" \
+				d_info
 		} elseif {![catch {set type [exec file $path]}]} {
 			set n [string length $path]
 			if {[string equal -length $n $path $type]} {
@@ -611,7 +610,7 @@ proc apply_hunk {x y} {
 		puts -nonewline $p $current_diff_header
 		puts -nonewline $p [$ui_diff get $s_lno $e_lno]
 		close $p} err]} {
-		error_popup [append $failed_msg "\n\n$err"]
+		error_popup "$failed_msg\n\n$err"
 		unlock_index
 		return
 	}
@@ -829,7 +828,7 @@ proc apply_range_or_line {x y} {
 		puts -nonewline $p $current_diff_header
 		puts -nonewline $p $wholepatch
 		close $p} err]} {
-		error_popup [append $failed_msg "\n\n$err"]
+		error_popup "$failed_msg\n\n$err"
 	}
 
 	unlock_index

lib/error.tcl

@@ -17,7 +17,7 @@ proc error_popup {msg} {
 	set cmd [list tk_messageBox \
 		-icon error \
 		-type ok \
-		-title [append "$title: " [mc "error"]] \
+		-title [mc "%s: error" $title] \
 		-message $msg]
 	if {[winfo ismapped [_error_parent]]} {
 		lappend cmd -parent [_error_parent]
@@ -33,7 +33,7 @@ proc warn_popup {msg} {
 	set cmd [list tk_messageBox \
 		-icon warning \
 		-type ok \
-		-title [append "$title: " [mc "warning"]] \
+		-title [mc "%s: warning" $title] \
 		-message $msg]
 	if {[winfo ismapped [_error_parent]]} {
 		lappend cmd -parent [_error_parent]

lib/merge.tcl

@@ -144,7 +144,7 @@ constructor dialog {} {
 	}
 
 	make_dialog top w
-	wm title $top [append "[appname] ([reponame]): " [mc "Merge"]]
+	wm title $top [mc "%s (%s): Merge" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/remote_add.tcl

@@ -17,7 +17,7 @@ constructor dialog {} {
 
 	make_dialog top w
 	wm withdraw $top
-	wm title $top [append "[appname] ([reponame]): " [mc "Add Remote"]]
+	wm title $top [mc "%s (%s): Add Remote" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/remote_branch_delete.tcl

@@ -26,7 +26,7 @@ constructor dialog {} {
 	global all_remotes M1B use_ttk NS
 
 	make_dialog top w
-	wm title $top [append "[appname] ([reponame]): " [mc "Delete Branch Remotely"]]
+	wm title $top [mc "%s (%s): Delete Branch Remotely" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 	}

lib/shortcut.tcl

@@ -5,7 +5,7 @@ proc do_windows_shortcut {} {
 	global _gitworktree
 	set fn [tk_getSaveFile \
 		-parent . \
-		-title [append "[appname] ([reponame]): " [mc "Create Desktop Icon"]] \
+		-title [mc "%s (%s): Create Desktop Icon" [appname] [reponame]] \
 		-initialfile "Git [reponame].lnk"]
 	if {$fn != {}} {
 		if {[file extension $fn] ne {.lnk}} {
@@ -40,7 +40,7 @@ proc do_cygwin_shortcut {} {
 	}
 	set fn [tk_getSaveFile \
 		-parent . \
-		-title [append "[appname] ([reponame]): " [mc "Create Desktop Icon"]] \
+		-title [mc "%s (%s): Create Desktop Icon" [appname] [reponame]] \
 		-initialdir $desktop \
 		-initialfile "Git [reponame].lnk"]
 	if {$fn != {}} {
@@ -72,7 +72,7 @@ proc do_macosx_app {} {
 
 	set fn [tk_getSaveFile \
 		-parent . \
-		-title [append "[appname] ([reponame]): " [mc "Create Desktop Icon"]] \
+		-title [mc "%s (%s): Create Desktop Icon" [appname] [reponame]] \
 		-initialdir [file join $env(HOME) Desktop] \
 		-initialfile "Git [reponame].app"]
 	if {$fn != {}} {

lib/tools_dlg.tcl

@@ -19,7 +19,7 @@ constructor dialog {} {
 	global repo_config use_ttk NS
 
 	make_dialog top w
-	wm title $top [append "[appname] ([reponame]): " [mc "Add Tool"]]
+	wm title $top [mc "%s (%s): Add Tool" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 		wm transient $top .
@@ -184,7 +184,7 @@ constructor dialog {} {
 	load_config 1
 
 	make_dialog top w
-	wm title $top [append "[appname] ([reponame]): " [mc "Remove Tool"]]
+	wm title $top [mc "%s (%s): Remove Tool" [appname] [reponame]]
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 		wm transient $top .
@@ -280,7 +280,7 @@ constructor dialog {fullname} {
 	}
 
 	make_dialog top w -autodelete 0
-	wm title $top [append "[appname] ([reponame]): " $title]
+	wm title $top "[mc "%s (%s):" [appname] [reponame]] $title"
 	if {$top ne {.}} {
 		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
 		wm transient $top .

lib/transport.tcl

@@ -226,7 +226,7 @@ proc do_push_anywhere {} {
 	bind $w <Visibility> "grab $w; focus $w.buttons.create"
 	bind $w <Key-Escape> "destroy $w"
 	bind $w <Key-Return> [list start_push_anywhere_action $w]
-	wm title $w [append "[appname] ([reponame]): " [mc "Push"]]
+	wm title $w [mc "%s (%s): Push" [appname] [reponame]]
 	wm deiconify $w
 	tkwait window $w
 }