Launching gitk on a bare repository or a .git directory
would previously show the work tree as having removed all
files.  We now inhibit showing local changes when gitk
is not launched from within a work tree.

Signed-off-by: David Aguilar <davvid@gmail.com>
---
 gitk |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/gitk b/gitk
index f1f21e9..ef12845 100755
--- a/gitk
+++ b/gitk
@@ -393,6 +393,9 @@ proc readcommit {id} {
 proc updatecommits {} {
     global viewdata curview phase displayorder ordertok idpending
     global children commitrow selectedline thickerline showneartags
+    global isworktree
+
+    set isworktree [expr {[exec git rev-parse --is-inside-work-tree] == "true"}]
 
     if {$phase ne {}} {
 	stop_rev_list
@@ -2844,8 +2847,9 @@ proc dohidelocalchanges {} {
 # spawn off a process to do git diff-index --cached HEAD
 proc dodiffindex {} {
     global localirow localfrow lserial showlocalchanges
+    global isworktree
 
-    if {!$showlocalchanges} return
+    if {!$showlocalchanges || !$isworktree} return
     incr lserial
     set localfrow -1
     set localirow -1
@@ -8643,6 +8647,7 @@ set patchnum 0
 set localirow -1
 set localfrow -1
 set lserial 0
+set isworktree [expr {[exec git rev-parse --is-inside-work-tree] == "true"}]
 setcoords
 makewindow
 # wait for the window to become visible
-- 
1.5.4.3

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