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From: "brian m. carlson" <sandals@crustytoothpaste.net>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: "Eric Sunshine via GitGitGadget" <gitgitgadget@gmail.com>,
	git@vger.kernel.org, "Jeff King" <peff@peff.net>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: Re: [PATCH 1/3] chainlint: sidestep impoverished macOS "terminfo"
Date: Thu, 10 Nov 2022 22:21:24 +0000	[thread overview]
Message-ID: <Y215ZKz2iZWJCYo3@tapette.crustytoothpaste.net> (raw)
In-Reply-To: <CAPig+cTL4x45E2a0RbpO2ntPo08K8hQ2wxcXm=QesqtYqxpvaw@mail.gmail.com>

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On 2022-11-10 at 03:37:16, Eric Sunshine wrote:
> Hmm, on my machine "nsterm" also lacks the "dim" capability. I see
> that Neovim docs recommend "nsterm" with Terminal.app, so perhaps that
> ought to be handled specially here, as well. Do you think any
> variations other than base "nsterm" are worth special-casing?

I'd say we should do nsterm, nsterm-256color, and nsterm-direct.

> I don't mind tightening which terminal types are handled specially.
> "xterm-direct" doesn't exist on my old macOS. Is it present on newer
> macOS? If so, does it require special-casing (i.e. does it lack
> "dim")? If we don't special-case "xterm-direct", it will fall back to
> using `tput` interrogation, which should be fine as long as the
> "xterm-direct" terminfo entry is accurate.

It's present in newer ncurses, so I expect it will make its way to macOS
eventually.  I don't know whether Apple's version of it will contain
the `dim` capability, but on Debian all three xterm variants do.

It sounds like Apple is specifically limiting their capabilities for
some reason when upstream ncurses doesn't.  I can't say why that is, but
perhaps it's for compatibility.  Debian had to do that for one release
with screen* when Screen added support for some new feature but tmux had
not.

> I notice that the iTerm2 FAQ also recommends "xterm-new" on macOS, and
> that one lacks "dim", as well on my machine. So, it seems that it
> should be special-cased too.
> 
> Taking all the above into account, perhaps this regex?
> 
>     /xterm|xterm-.*color|xterm-new|nsterm/

Maybe this, then?

/(xterm|nsterm)(-(256color|direct))?|xterm-new/

That matches the three special variants of each one here plus xterm-new.

> Of course, the other option is to follow Git's own lead by not
> worrying about TERM and `tput` and just assume everyone understands
> ANSI color codes. I'm too old-school to feel entirely comfortable with
> that approach, but I would entertain it if others feel it is safe
> enough.

Sure.  I would also prefer to avoid that.
-- 
brian m. carlson (he/him or they/them)
Toronto, Ontario, CA

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  reply	other threads:[~2022-11-10 22:21 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-09 16:58 [PATCH 0/3] chainlint: emit line numbers alongside test definitions Eric Sunshine via GitGitGadget
2022-11-09 16:58 ` [PATCH 1/3] chainlint: sidestep impoverished macOS "terminfo" Eric Sunshine via GitGitGadget
2022-11-09 22:18   ` Taylor Blau
2022-11-10  2:40   ` brian m. carlson
2022-11-10  3:37     ` Eric Sunshine
2022-11-10 22:21       ` brian m. carlson [this message]
2022-11-10 22:36         ` Eric Sunshine
2022-11-10 22:48           ` brian m. carlson
2022-11-09 16:58 ` [PATCH 2/3] chainlint: latch line numbers at which each token starts and ends Eric Sunshine via GitGitGadget
2022-11-09 16:58 ` [PATCH 3/3] chainlint: prefix annotated test definition with line numbers Eric Sunshine via GitGitGadget
2022-11-09 22:22 ` [PATCH 0/3] chainlint: emit line numbers alongside test definitions Taylor Blau
2022-11-11  7:34 ` [PATCH v2 " Eric Sunshine via GitGitGadget
2022-11-11  7:34   ` [PATCH v2 1/3] chainlint: sidestep impoverished macOS "terminfo" Eric Sunshine via GitGitGadget
2022-11-11 14:55     ` Ævar Arnfjörð Bjarmason
2022-11-11 16:44       ` Eric Sunshine
2022-11-11 17:15         ` Eric Sunshine
2022-11-11 21:56           ` Taylor Blau
2022-11-11  7:34   ` [PATCH v2 2/3] chainlint: latch line numbers at which each token starts and ends Eric Sunshine via GitGitGadget
2022-11-11  7:34   ` [PATCH v2 3/3] chainlint: prefix annotated test definition with line numbers Eric Sunshine via GitGitGadget
2022-11-11 15:03 ` [PATCH 0/3] chainlint: emit line numbers alongside test definitions Ævar Arnfjörð Bjarmason

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