On 2024-05-14 16:03:33 -0400, Grant Edwards via Python-list wrote: > On 2024-05-14, Alan Gauld via Python-list <python-list@python.org> wrote: > > On 14/05/2024 18:44, Gordinator via Python-list wrote: > > > >> I wish to write a terminal emulator in Python. I am a fairly > >> competent Python user, and I wish to try a new project idea. What > >> references can I use when writing my terminal emulator? I wish for > >> it to be a true terminal emulator as well, not just a Tk text > >> widget or something like that. > > > > The first thing is to decide which terminal. > > If you want to make life easier, make it a superset of a terminal that > already exists in the terminfo database. > > Going with some sort of ANSI terminal will probably provide > operability even with dumb apps which ignore $TERM and just spit out > basic ANSI escape sequences.
And if you want to go for a superset, xterm might be one of the more useful: https://www.xfree86.org/current/ctlseqs.html > If you really want to break trail, you could invent your own control > sequences, which means you'll have to write terminfo and/or termcap > entries as well as the terminal emulator. Right. A saner model than ANSI and its supersets might be a good idea conceptionally. But I'd expect quite a few programs to break. > > A VT100 is very different from a 3270. And even a VT330 is quite > > different from a VT100 although sharing a common subset of control > > codes. And if you start looking at graphical terminals things get > > even more interesting! > > "Intersting" is putting it mildly... Yup. Also there aren't many programs which use, e.g. xterm's pixel-graphics capabilities. OTOH, there is something like domterm[1], which can (theoretically) display anything a browser can display. hp [1] https://domterm.org/index.html -- _ | Peter J. Holzer | Story must make more sense than reality. |_|_) | | | | | h...@hjp.at | -- Charles Stross, "Creative writing __/ | http://www.hjp.at/ | challenge!"
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