GNOME Bugzilla – Bug 704898
Mnemonics interfere with alternate keys
Last modified: 2018-05-02 15:44:41 UTC
gtkwindow.c hard-codes priv->mnemonic_modifier = GDK_MOD1_MASK. This captures Alt-key events and prevents the entry of alternate keys on Macs. Bug 663856 fixed this for accelerators; similar magic needs to be applied for mnemonics as well.
Sorry, But 663856 isn't quite the right one: It's Bug 659602 that implements the modifier_intent stuff that finally resolved the problem for accelerators. Other germane bugs are Bug 605799 and Bug 607115.
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