Re: [PATCH 2/4] Fix drop-down menus in the git-gui dialogs.
From: Shawn O. Pearce <hidden>
Date: 2016-06-15 22:43:03
git-gui patches should be addressed to me, not Paul. Eygene Ryabinkin [off-list ref] wrote:
If the drop-down menu (for example "Local Branch" from the dialog activated by the "Branch/Create..." menu item) is chosen with the left mouse button, then the pointer is moved off the drop-down menu while the mouse button is still pressed and then the 'Escape' key is pressed, the main menu will be broken. Next time when you will try to select any main menu item, the Tcl/Tk interpreter will spawn an internal error. Error was fixed by "grab"bing the drop-down menu windows on their activation. Now all drop-down menus are disappearing once the mouse button is depressed, no matter what is the current position of the mouse pointer.
This fix actually horribly breaks on Mac OS X. The problem appears to be that the <Visibility> event on that system doesn't get delivered until after the menu is destroyed, yet I'm getting a %s of VisibilityUnobscured in the event handler. Go figure. So anyway, I cannot apply this patch as-is, because it breaks my main development system. I understand and feel your pain, but you either need to make this binding apply only on your OS, or find another way to workaround that Tk bug...
quoted hunk ↗ jump to hunk
diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh index 8157184..1f3ee05 100755 --- a/git-gui/git-gui.sh +++ b/git-gui/git-gui.sh@@ -2126,6 +2126,7 @@ proc do_create_branch {} { -font font_ui set lbranchm [eval tk_optionMenu $w.from.head_m create_branch_head \ $all_heads] + bind $lbranchm <Visibility> "grab $lbranchm" $lbranchm configure -font font_ui $w.from.head_m configure -font font_ui grid $w.from.head_r $w.from.head_m -sticky w
-- Shawn.