[PATCHv4 3/5] git-gui: work from the .git dir

[Giuseppe Bilotta <giuseppe.bilotta@gmail.com>]

When git-gui is run from a .git dir, _gitdir would be set to "." by
rev-parse, something that confuses the worktree detection.

Fix by expanding the value of _gitdir to pwd in this special case.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
---
 git-gui/git-gui.sh |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
index d0dff40..c5c787d 100755
--- a/git-gui/git-gui.sh
+++ b/git-gui/git-gui.sh
@@ -1102,6 +1102,8 @@ if {[catch {
 		set _prefix {}
 		}]
 	&& [catch {
+		# beware that from the .git dir this sets _gitdir to .
+		# and _prefix to the empty string
 		set _gitdir [git rev-parse --git-dir]
 		set _prefix [git rev-parse --show-prefix]
 	} err]} {
@@ -1110,6 +1112,14 @@ if {[catch {
 	choose_repository::pick
 	set picked 1
 }
+
+# we expand the _gitdir when it's just a single dot (i.e. when we're being
+# run from the .git dir itself) lest the routines to find the worktree
+# get confused
+if {$_gitdir eq "."} {
+	set _gitdir [pwd]
+}
+
 if {![file isdirectory $_gitdir] && [is_Cygwin]} {
 	catch {set _gitdir [exec cygpath --windows $_gitdir]}
 }
-- 
1.6.6.rc1.295.g3a4e71