Readline (was Re: state of ghc6 on sparc)
Mon, 23 Jun 2003 09:37:29 +0100
> "Simon Marlow" <email@example.com> writes:
> > > > > [SimpleLineEditor]
> > Hmm. I'm highly dubious that this can be done portably enough to be
> > worthwhile. The only way to get information about the=20
> terminal is by
> > consulting termcap or terminfo, otherwise you're just guessing.
> I'm pretty sure that even termcap/terminfo does not contain the sort
> of information we need. There are just too many layers of environment
> to worry about.
I'm not aware of any reason why termcap/terminfo aren't complete enough
- could you give an example? After all, these are the only mechanisms
available to readline and terminal apps. If the termcap says that the
down arrow key produces a certain string, then that's the string you see
in the input, AFAIK.
Why not just write a binding to curses? (actually, doesn't one already
exist? I seem to recall that there was one in QForeign).
> > Isn't this just a pile of bug reports waiting to happen? Or a
> > neverending maintenance headache?
> Yes, I expect so. But someone did have a plea that even some small
> editing functionality would be better than nothing. So in the spirit
> of "worse is better"...
Hmm, sometimes worse really is worse :-)