947cdb3acd
We already had that for global keymaps (used e.g. to generate shortcuts for menu entries), but this wasn’t possible for modal keymaps yet (e.g. help message in header during transforms and other modal operation). This commit only adds needing background code, it does not change anything from user PoV. Modal operators will be updated to use it in comming weeks. Thanks to Campbell for revisions & suggestions. :) Differential Revision: https://developer.blender.org/D780