[PATCH] git-gui: Use PWD if it exists on Mac OS X.

The current working directory is set to / when git-gui is invoked
using the Git Gui.app bundle on Mac OS X. This means that if it is
launched from a directory which contains a repository then git-gui
won't automatically find it unless the repository happens to be
located in /.

The PWD environment variable is however preserved if the bundle is
invoked using open(1). If git-gui would check for PWD then a user
could for example type open -a 'Git Gui' on a command line in order to
launch the program and it would automatically find the repository.

Teach git-gui to use the PWD environment variable on Mac OS X.

Signed-off-by: Marcus Karlsson <redacted>
---
 git-gui/macosx/AppMain.tcl |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/git-gui/macosx/AppMain.tcl b/git-gui/macosx/AppMain.tcl
index ddbe633..738bdd0 100644
--- a/git-gui/macosx/AppMain.tcl
+++ b/git-gui/macosx/AppMain.tcl

@@ -12,7 +12,9 @@ if {[file tail [lindex $argv 0]] eq {gitk}} {
 } else {
 	set argv0 [file join $gitexecdir [file tail [lindex $argv 0]]]
 	set AppMain_source [file join $gitguilib git-gui.tcl]
-	if {[pwd] eq {/}} {
+	if {[info exists env(PWD)]} {
+		cd $env(PWD)
+	} elseif {[pwd] eq {/}} {
 		cd $env(HOME)
 	}
 }

-- 
1.7.10.rc0.17.g36a9f