Re: [screen-devel] Virtual term programming

[Micah Cowan]

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Rafael Fini wrote:
> Hi list!
> 
> I was thinking about write a program like screen, with some features,
> like horizontal split, different shortcut schemes, etc..
> But i don't know where to begin. I already downloaded Screen source, but
> the code is a little complex, and i want to start with a simple one. I'm
> a inexperienced programmer. Can you recommend me some manual, or  text
> about this type of programming?

This may be sacrilege, but from what I've seen, the source code for tmux
(tmux.sourceforge.net) is vastly more readable/comprehensible than
screen's. (In fact, from conversing with the author, the state of
screen's source was a primary motivation for beginning tmux in the first
place).

But screen, tmux's, and probably anyone else's term-emulation code will
still tend to assume some existing knowledge on how terminals work.
Sources for information include
http://invisible-island.net/xterm/ctlseqs/ctlseqs.html (which documents
how Xterm handles various control sequences), the terminfo(5) manpage
(which documents how terminfo databases describe various terminal
features), and your system documentation on terminals (like termios(3)).

- --
HTH,
Micah J. Cowan
Programmer, musician, typesetting enthusiast, gamer.
Maintainer of GNU Wget and GNU Teseq
http://micah.cowan.name/
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