[PATCH 1/2] gitk: use --pretty=reference to generate the commit summary

[Beat Bolli <dev+git@drbeat.li>]

Git learned the "reference" pretty format in 1f0fc1db85 (pretty:
implement 'reference' format, 2019-11-19). Use it also in gitk instead
of duplicating the format string. This way, gitk always follows the
formatting convention defined by git.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
---
Junio, this goes on top of dl/pretty-reference, currently in pu.

Thanks!

 gitk-git/gitk | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/gitk-git/gitk b/gitk-git/gitk
index a14d7a16b2..cc89fb25d2 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -9392,8 +9392,7 @@ proc mktaggo {} {
 proc copysummary {} {
     global rowmenuid autosellen
 
-    set format "%h (\"%s\", %ad)"
-    set cmd [list git show -s --pretty=format:$format --date=short]
+    set cmd [list git show -s --pretty=reference]
     if {$autosellen < 40} {
         lappend cmd --abbrev=$autosellen
     }
-- 
2.23.0.13.gecf2037ff6