add basic branch display tests

diff --git a/git-gui/lib/choose_rev.tcl b/git-gui/lib/choose_rev.tcl
index a063c5bc49fc9bad58f7fd78e7446a097ce86b88..c8821c146386f850c0794df70f605cd9f18dcff3 100644 (file)
--- a/git-gui/lib/choose_rev.tcl
+++ b/git-gui/lib/choose_rev.tcl
@@ -451,7 +451,8 @@ method _sb_set {sb orient first last} {
                        focus $old_focus
                }
        }
-       $sb set $first $last
+
+       catch {$sb set $first $last}
 }
 
 method _show_tooltip {pos} {