When trying to map ISO_Level5_Shift to Escape with xcape (I have put ISO_Level5_Shift on my \<CAPS> key, I don't know if it's relevant), I have the following message and the mapping is not set:
WARNING: No keycode found for keysym Escape (0xff1b) in mapping ISO_Level5_Shift. Ignoring this mapping. Failed to parse_mapping
By reading Note regarding xmodmap in the README, I realized that Escape was not mapped to any keys. By mapping it to keycode 255, it now works perfectly.
When trying to map ISO_Level5_Shift to Escape with xcape (I have put ISO_Level5_Shift on my \<CAPS> key, I don't know if it's relevant), I have the following message and the mapping is not set:
WARNING: No keycode found for keysym Escape (0xff1b) in mapping ISO_Level5_Shift. Ignoring this mapping. Failed to parse_mapping