https://github.com/geany/geany/pull/1633 fixes the majority of non-working keybindings.
The ones that still don't work and should be changed are
``` GEANY_KEYS_EDITOR_AUTOCOMPLETE GEANY_KEYS_SELECT_WORD GEANY_KEYS_GOTO_LINE GEANY_KEYS_GOTO_LINESTARTVISUAL GEANY_KEYS_GOTO_LINEENDVISUAL GEANY_KEYS_NOTEBOOK_SWITCHTABLASTUSED ```
These don't work because of conflicts with system keybindings or because Alt-<some key> causes different character is created.
However, other keybindings should be changed too. For instance "delete to line end" is `<Primary><Shift><Delete>` but because there's no `<Delete>` on Mac, one has to press 4 keys `<Primary><Shift><Fn><Backspace>`, which is crazy.