gitk: Use show-ref instead of ls-remote

It used to be ls-remote on self was the only easy way to grab
the ref information.  Now we have show-ref which does not
involve fork and IPC, so use it.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/gitk b/gitk
index 8132812b50cc7d387cf762851387c8dafff7e7b7..1c36235bff8c127faa60eca051f15f35fb14f484 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -309,9 +309,9 @@ proc readrefs {} {
     foreach v {tagids idtags headids idheads otherrefids idotherrefs} {
        catch {unset $v}
     }
-    set refd [open [list | git ls-remote [gitdir]] r]
+    set refd [open [list | git show-ref] r]
     while {0 <= [set n [gets $refd line]]} {
-       if {![regexp {^([0-9a-f]{40})   refs/([^^]*)$} $line \
+       if {![regexp {^([0-9a-f]{40}) refs/([^^]*)$} $line \
            match id path]} {
            continue
        }