git-gui: Force focus to the diff viewer on mouse click.

Apparently a "feature" of Tcl/Tk on Mac OS X is that a disabled text
widget cannot receive focus or receive a selection within it.  This
makes the diff viewer almost useless on that platform as you cannot
select individual parts of the buffer.

Now we force focus into the diff viewer when its clicked on with
button 1.  This works around the feature and allows selection to
work within the viewer just like it does on other less sane systems,
like Microsoft Windows.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/git-gui.sh b/git-gui.sh
index f587f31a2ceef1cf4b370ed3ed5a5a740e7368fc..ea4136c98b0621264969f47a11f80d24834bf77f 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -4472,6 +4472,7 @@ bind $ui_diff <Key-Up>     {catch {%W yview scroll -1 units};break}
 bind $ui_diff <Key-Down>   {catch {%W yview scroll  1 units};break}
 bind $ui_diff <Key-Left>   {catch {%W xview scroll -1 units};break}
 bind $ui_diff <Key-Right>  {catch {%W xview scroll  1 units};break}
+bind $ui_diff <Button-1>   {focus %W}
 
 if {!$single_commit} {
        bind . <$M1B-Key-n> do_create_branch