a patch for gitk to show git-svn-ids on headlines

gitk_show_svn_rev.patch

--- gitk.org	Mon Jan 16 01:08:02 2012
+++ gitk	Fri Feb 10 18:23:31 2012
@@ -1676,6 +1676,10 @@
     if {$i >= 0} {
 	set headline [string trimright [string range $headline 0 $i]]
     }
+    set svnrev [lindex [regexp -linestop -inline {git-svn-id:.*@([[:digit:]]+)} $comment] 1]
+    if {$svnrev != {}} {
+	set headline "\[$svnrev\] $headline"
+    }
     if {!$listed} {
 	# git log indents the comment by 4 spaces;
 	# if we got this via git cat-file, add the indentation