Thread: remap Ctrl key?

how can remap (left) control key that:
1. if pressed , released no other key, acts escape.
2. if pressed & held key, acts control (no change in behavior in case).

closest able is:

code:

xmodmap -e 'remove control = control_l'  xmodmap -e 'keysym control_l = escape'  xmodmap -e 'add control = escape'

the problem pressing ctrl+a sends escape followed ctrl+a (rather ctrl+a) when key pressed. bad since, example, in vim's insert mode, cannot use ctrl+r paste register, because first sends escape throws me normal mode...

i see complication: when press escape want undecided whether that's escape or control until either press key @ same time (making control)or release escape (making escape). don't want change "label" of key, actions: ignore press, turn release without other keys press followed release, turn press of key whilst holding control press of control followed press of other key. sounds nasty me... complicated.

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