[PATCH 3/3] gitk: Allow displaying time zones from author and commit timestamps

[Anders Kaseorg <andersk@xxxxxxx>]

Now gitk can be configured to display author and commit dates in their
original timezone, by putting %z into datetimeformat in ~/.gitk.

Signed-off-by: Anders Kaseorg <andersk@xxxxxxx>
---
 gitk |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/gitk b/gitk
index 5c6058a..a072593 100755
--- a/gitk
+++ b/gitk
@@ -11018,7 +11018,18 @@ proc prefsok {} {
 proc formatdate {d} {
     global datetimeformat
     if {$d ne {}} {
-	set d [clock format [lindex $d 0] -format $datetimeformat]
+	if {[string match {*%[zZ]*} $datetimeformat]} {
+	    if {[catch {set d [clock format [lindex $d 0] -timezone [lindex $d 1] -format $datetimeformat]}]} {
+		# Tcl < 8.5 does not support -timezone.
+		global env
+		set zone [lindex $d 1]
+		set env(TZ) "IDK[string range $zone 0 2]:[string range $zone 3 end]"
+		set d [clock format [lindex $d 0] -format $datetimeformat]
+		unset env(TZ)
+	    }
+	} else {
+	    set d [clock format [lindex $d 0] -format $datetimeformat]
+	}
     }
     return $d
 }
-- 
1.7.4.rc1


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