xenial (1) xcape.1.gz

NAME

       xcape - use a modifier key as another key

SYNOPSIS

       xcape [-d] [-t timeout] [-e map-expression]

DESCRIPTION

       xcape  allows  a  modifier  key to be used as another key when it is pressed and released on its own. The
       default behaviour is to generate the Escape key in place of Control_L (Left Control).

OPTIONS

       -d     Debug mode.  Will run as a foreground process.

       -t timeout
              Give a timeout in milliseconds.  If you hold a key longer than timeout a key  event  will  not  be
              generated.

       -e map-expression
              Use map-expression as the expression(s).

EXPRESSION SYNTAX

       Expression  syntax  is  ´ModKey=Key[|OtherKey]´.   Multiple expressions can be passed, delimited by semi-
       colons (;).

       A list of keysyms can be found in the header file <X11/keysymdef.h> (without the XK_ prefix).

       Note that shifted keys must be specified as a shift key followed by the key to be pressed rather than the
       actual  name  of  the  character. For example to generate "{" the expression ´ModKey=Shift_L|bracketleft´
       could be used (assuming that you have a key with ´{´ above ´[´).

       You can also specify ModKey in decimal  (prefix  #),  octal  (#0),  or  hexadecimal  (#0x).  It  will  be
       interpreted as a keycode unless no corresponding key name is found.

EXAMPLES

       Make  Left  Shift generate Escape when pressed and released on it's own, and Left Control generate Ctrl-O
       combination when pressed and released on it's own:
              xcape -e 'Shift_L=Escape;Control_L=Control_L|O'

       In conjugation with xmodmap it is possible to make an ordinary key act as an extra  modifier.  First  map
       the  key to the modifier with xmodmap and then the modifier back to the key with xcape. As an example, we
       can make the space bar work as an additional ctrl key when held with the following sequence of commands:

       First, map an unused modifier's keysym to the spacebar's keycode and make it a control modifier. It needs
       to be an existing key so that emacs won't spazz out when you press it. Hyper_L is a good candidate.

              spare_modifier="Hyper_L"
              xmoadmap -e "keycode 65 = $spare_modifier"
              xmoadmap -e "remove mod4 = $spare_modifier"
              # hyper_l is mod4 by default
              xmoadmap -e "add Control = $spare_modifier"

       Next, map space to an unused keycode (to keep it around for xcape to use).

              xmodmap -e "keycode any = space"

       Finally use xcape to cause the space bar to generate a space when tapped.

              xcape -e "$spare_modifier=space"

SEE ALSO

       xmodmap(1), xev(1)

AUTHOR

       xcape was written by Albin Olsson (albin dot olsson at gmail dot com)