Out of bounds F keys

[5HT2]

I'm using xcape -e 'Caps_Lock=Escape;Super_L=0xffd4', the keysym for F23 is 0xffd4, as shown by /usr/include/X11/keysymdef.h
xcape doesn't recognize it and instead throws WARNING: No keycode found for keysym 0xffd4 (0xffd4) in mapping Super_L. Ignoring this mapping.
Is there another way to map it to F23 like keys?

[aplotor]

bump. same issue, F13 onwards

[rybern]

Same issue, trying to map F20

[brentgreeff]

Same issue - I want to map Shift_R=XK_F19
Invalid key: XK_F19
Failed to parse_mapping

[AkashaP]

It's just F13-F24, remove the XK_ prefix, as per man xcape you can use the macro labels minus the XK_ prefix

xcape -d -e '2=F13'
Assigned mapping from "2" ( keysym 0x32, key code 11)
to "F13" (keysym 0xffca, key code 191)
sig_handler running...
Intercepted key event 3, key code 36
Intercepted key event 2, key code 11
Key pressed!
2Intercepted key event 3, key code 11
Key released!
Generating F13!
Ignoring generated event.
Ignoring generated event.

I'm having a separate issue though that as a receiver event it only generates the events once and then never works again (e.g F13=2), unless i do something like "F13=2;F13=2" then it works but types twice i am still experimenting with it and posting it as a separate issue

[toothbrush]

I'm getting the same issue, trying to run xcape -e "Super_L=Multi_key". I've checked in xorgproto-2019.1's include/X11/keysymdef.h, and i can see the line #define XK_Multi_key 0xff20. What could be the problem?

The output xcape gives is:

WARNING: No keycode found for keysym Multi_key (0xff20) in mapping Super_L. Ignoring this mapping.
Failed to parse_mapping