DFHack
Alt-Number keybindings are not displayed in "Key Binding" list of hotkeys plugin
keybinding add Alt-W@dwarfmode/Default twaterlvl
keybinding add Alt-7@dwarfmode/Default twaterlvl
Both of these keybindings work, but Alt-7 keybinding isn't displayed in the "Key Binding" list.
version: dfhack 0.47.05-r2, macOS
I haven't looked into this at all, but this sounds familiar. I fixed a similar problem in quickfort where I found that number keys could get encoded in either of two ways. More info here: https://github.com/DFHack/scripts/commit/d5156b25ac6b7401e04184d94abe0ad744c1828b
This is probably different - hotkeys displays bindings registered by the keybinding command, which are independent of DF's key event handling (and don't have two ways to handle printable keys, like DF's KEY and SYM tokens).
It looks like support for number keys was added to keybinding more recently than others (9eac4585b1), so maybe support for those was never added to hotkeys. I would be curious if F10 through F12 bindings show up there as well.
Edit: I think this is probably what would need to change: https://github.com/DFHack/dfhack/blob/e5ca5e48e90e205082d01d5cd15bbea062cb1e59/plugins/hotkeys.cpp#L47-L55
(not immediately seeing a great way to keep Core in sync with this plugin, although I believe this is the only other place that needs to be in sync currently.)
Fixed in https://github.com/DFHack/dfhack/commit/4e7b4dc55488a5a3cc227c8bd3b8d75ac14ea92d