Date: Sat, 04 Nov 2023 02:28:52 +0100 From: Steffen Nurpmeso <steffen@sdaoden.eu> To: Thomas Dickey <dickey@his.com> Cc: Jamie Landeg-Jones <jamie@catflap.org>, freebsd-current@freebsd.org, bapt@freebsd.org Subject: Re: Freebsd 14+ -- tcsh incompatible with terminfo Message-ID: <20231104012852.ibgGG%steffen@sdaoden.eu> In-Reply-To: <ZURIBng8NTG4bfHR@prl-debianold-64.jexium-island.net> References: <202310312245.39VMjNJB080965@donotpassgo.dyslexicfish.net> <202310312259.39VMxm6W081150@donotpassgo.dyslexicfish.net> <ZUGZPWBSt80p3jHa@prl-debianold-64.jexium-island.net> <202311010349.3A13nX1M094463@donotpassgo.dyslexicfish.net> <20231101220247.HGrrB%steffen@sdaoden.eu> <202311020241.3A22f4o3042181@donotpassgo.dyslexicfish.net> <20231102175855.A1pj0%steffen@sdaoden.eu> <ZURIBng8NTG4bfHR@prl-debianold-64.jexium-island.net>
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Hello Thomas Dickey. Thomas Dickey wrote in <ZURIBng8NTG4bfHR@prl-debianold-64.jexium-island.net>: |On Thu, Nov 02, 2023 at 06:58:55PM +0100, Steffen Nurpmeso wrote: |> I do understand that a bit. Other than that plain termcap was so |> small and i would assume essentially unchanged for decades, that |> i do not. Termcap entries, yes. I could imagine vt220, xterm, |> screen-256color, and take one of st-256color, whatever KDE and |> GNOME terminal, and rxvt-unicode. Makes seven. Likely |> automatically extractable via "infocmp -C" of Dickey's terminfo. |>=20 |> Let's just try that: |>=20 |> $ rm .TCAP;\ |> for f in vt220 xterm screen-256color st-256color \ |> rxvt-256color gnome-256color konsole-256color; do \ |> infocmp -C $f >> .TCAP;\ |> done;\ |> ls -l .TCAP |> -rw-r----- 1 steffen steffen 7145 Nov 2 18:40 .TCAP | |There's more data in termcap than that (which some people would like \ |to use). You know the entire thread is moot as i think bapt@ has thrown away the BSD termcap years ago, if i recall correctly (i think i spoke up by then). I only answered because of the "great it is gone" thing. |And there's additional data for terminfo -- again, some want it. | |man infocmp: | | For best results when converting to termcap format, you should \ | use both | -C and -r. Normally a termcap description is limited to \ | 1023 bytes. And i do not know whether BSD termcap can work with larger ones. | infocmp trims away less essential parts to make it fit. If \ | you are | converting to one of the (rare) termcap implementations which \ | accept an | unlimited size of termcap, you may want to add the -T option. \ Yes. I heard about the limit. | More of=E2=80=90 | ten however, you must help the termcap implementation, and \ | trim excess | whitespace (use the -0 option for that). | |(-T is appropriate here - ymmv) | |With -C alone, I get |-rw------- 1 tom users 7315 Nov 2 21:02 .TCAP | |With -CrT, |-rw------- 1 tom users 14390 Nov 2 21:02 .TCAP | |For terminfo, no options |-rw------- 1 tom users 16027 Nov 2 21:03 .TCAP | |For terminfo with -x |-rw------- 1 tom users 19533 Nov 2 21:03 .TCAP One would have to add that OpenGL-accelerated terminal (allacritty or so) at least, too. I am not speaking against your ncurses and the work and effort you put there, you know, i spent about 30% of my live in front of a st/tmux combination, and i would think tmux uses more and more of the optimizations, and improvements of yours. For example i saw fly by an OpenBSD commit where tmux started using tparm_s or what its name was. They imported some ncurses snapshot only for it (in the end), if i got that right. The function is not on my box -- and i do not "track" ncurses no more because i will likely never reach a point where i need it as such. I was speaking pro BSD termcap. I do not know whether even the omnipresent readline library would need anything more than the absolute basics. I know my mailer can, .. it can even without termcap, .. at least a little bit, and very expensive. (I have not tried that out for years so.) --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)
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