Re: [PATCH (GIT-GUI,GITK) 6/8] gitk: Port new encoding logic from git-gui.

Alexander Gavrilov schrieb:

Subject: [PATCH] gitk: Implement batch lookup and caching of encoding attrs.

When the diff contains thousands of files, calling git-check-attr
once per file is very slow. With this patch gitk does attribute
lookup in batches of 30 files while reading the diff file list,
which leads to a very noticeable speedup.

This one does not work for me: The correct is not picked up anymore,
neither in Patch mode nor Tree mode. (It works as expected without this
patch.)

+proc cache_gitattr {attr pathlist} {
+	global path_attr_cache
+	set newlist {}
+	foreach path $pathlist {
+		if {[info exists path_attr_cache($attr,$path)]} continue
+		lappend newlist $path
+	}
+	while {$newlist ne {}} {
+		set head [lrange $newlist 0 29]
+		set newlist [lrange $newlist 30 end]
+		if {![catch {set rlist [eval exec git check-attr $attr -- $head]}]} {
+			foreach row [split $rlist "\n"] {
+				set cols [split $row :]

This colon made me nervous (because of the drive-colon combination on
Windows), but as long as you feed relative paths into 'git check-attr',
this should not matter (in my case).

+				set path [lindex $cols 0]
+				set value [join [lrange $cols 2 end] :]
+				if {[string index $path 0] eq "\""} {
+					set path [encoding convertfrom [lindex $path 0]]
+				}
+				set path_attr_cache($attr,$path) $value
+			}
+		}
+		update
+	}
+}