[PATCH 4/7] gitk: Fix file list context menu for merge commits.

[Alexander Gavrilov <angavrilov@gmail.com>]

Currently it displays an ugly error box, because the
treediffs array is not filled for such commits. This
is clearly unacceptable.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
---
 gitk |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gitk b/gitk
index 3c77909..cfaf7a1 100755
--- a/gitk
+++ b/gitk
@@ -6479,7 +6479,7 @@ proc getblobline {bf id} {
 
 proc mergediff {id} {
     global diffmergeid mdifffd
-    global diffids
+    global diffids treediffs
     global parents
     global diffcontext
     global diffencoding
@@ -6487,6 +6487,7 @@ proc mergediff {id} {
 
     set diffmergeid $id
     set diffids $id
+    set treediffs($id) [list ]
     # this doesn't seem to actually affect anything...
     set cmd [concat | git diff-tree --no-commit-id --cc -U$diffcontext $id]
     if {$limitdiffs && $vfilelimit($curview) ne {}} {
@@ -6506,7 +6507,7 @@ proc mergediff {id} {
 
 proc getmergediffline {mdf id np} {
     global diffmergeid ctext cflist mergemax
-    global difffilestart mdifffd
+    global difffilestart mdifffd treediffs
     global ctext_file_names ctext_file_lines
     global diffencoding
 
@@ -6524,6 +6525,7 @@ proc getmergediffline {mdf id np} {
 	    $ctext insert end "\n"
 	    set here [$ctext index "end - 1c"]
 	    lappend difffilestart $here
+	    lappend treediffs($id) $fname
 	    add_flist [list $fname]
 	    lappend ctext_file_names $fname
 	    lappend ctext_file_lines [lindex [split $here "."] 0]
-- 
1.6.0.20.g6148bc