Re: alt-arrow keys

[Thomas Dickey]

On Wed, 12 Jul 2006, Pierre Abbat wrote:

> On Wednesday 12 July 2006 17:55, Thomas Dickey wrote:
> > That's normally done by the terminfo entry.  Alt is a modifier (does not
> > normally send a character or character sequence by itself).   Common
> > modifiers include shift, control and meta (which may be the same as alt).
> >
> > Some terminals have an optional feature for prefixing an ESC before the
> > normal character value in response to alt.  If the keypad() mode is set
> > true, (n)curses attempts to match the incoming characters against the
> > known escape sequences.  Anything that's not recognized is left as
> > separate characters.  (From the description it's not clear which way you
> > have keypad() set to, or what $TERM you're using).
>
> keypad is true, and TERM is "xterm". The program and the terminal are on the
> same computer.

Depending on how it's installed, "xterm" could be the same as "xterm-r6",
"xterm-xf86-v44", "xterm-new", etc.  The last would (in relatively recent 
version ;-) include definitions for control/shift combinations of the 
cursor keys.  It doesn't include _all_ combinations, but does include most 
of the usable ones after discounting window managers, etc.

> I think what I'll do is make the altkey routine return anything that looks
> like an escape sequence of the form (escape bracket <some number of numbers
> separated by semicolons> letter), but isn't recognized, as a single number.
>
> phma
>
>
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--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net