Adding an FAQ entry for the keypad handling.

Thanks "Roberto E. Vargas Caballero" <k0ga@shike2.com>!
This commit is contained in:
Christoph Lohmann 2013-01-07 19:53:41 +01:00
parent 5facd29f75
commit 73879c1729

35
FAQ
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@ -37,4 +37,39 @@ back mode aka “copy mode”, its C-a ESC. You probably want defscrollback
[0] http://en.wikipedia.org/wiki/GNU_Screen [0] http://en.wikipedia.org/wiki/GNU_Screen
[1] http://en.wikipedia.org/wiki/Tmux [1] http://en.wikipedia.org/wiki/Tmux
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Why doesn't the Del key work in some programs?
Taken from the terminfo manpage:
If the terminal has a keypad that transmits codes when the keys
are pressed, this information can be given. Note that it is not
possible to handle terminals where the keypad only works in
local (this applies, for example, to the unshifted HP 2621 keys).
If the keypad can be set to transmit or not transmit, tive these
codes as smkx and rmkx. Otherwise the keypad is assumed to
always transmit.
In the st case smkx=\E[?1h\E= and rmkx=\E[?1l\E>, so it is mandatory that
applications which want to test against keypad keys, have to send these
sequences.
But buggy applications like bash and irssi for example don't do this. A fast
solution for them is to use the following command:
$ echo ^[?1h^[= >/dev/tty
or
$ echo $(tput smkx) >/dev/tty
In the case of bash it is using readline, which has a different not in its
manpage:
enable-keypad (Off)
When set to On, readline will try to enable the
application keypad when it is called. Some systems
need this to enable arrow keys.
Adding this option to your .inputrc will fix the keypad problem for all
applications using readline.
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