Date: Mon, 27 Apr 2026 12:47:04 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@FreeBSD.org> To: Simon J. Gerraty <sjg@FreeBSD.org> Cc: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: Re: git: 566cc005812b - main - safe_set treat ':' and '#' differently Message-ID: <86jyts1xzr.fsf@ltc.des.dev> In-Reply-To: <69e8f964.39869.24418b55@gitrepo.freebsd.org> (Simon J. Gerraty's message of "Wed, 22 Apr 2026 16:37:56 %2B0000") References: <69e8f964.39869.24418b55@gitrepo.freebsd.org>
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Simon J. Gerraty <sjg@FreeBSD.org> writes: > The branch main has been updated by sjg: > > URL: https://cgit.FreeBSD.org/src/commit/?id=566cc005812b72a4ba236764651dd8e82c94a166 > > commit 566cc005812b72a4ba236764651dd8e82c94a166 > Author: Simon J. Gerraty <sjg@FreeBSD.org> > AuthorDate: 2026-04-22 16:37:35 +0000 > Commit: Simon J. Gerraty <sjg@FreeBSD.org> > CommitDate: 2026-04-22 16:37:35 +0000 > > safe_set treat ':' and '#' differently > > Treat '#' as a comment anywhere, > but ':' only at start of line. I can't quite figure out what your goal is with this, but it doesn't seem right: `:` is not at all a comment, it is just a built-in alias for the `true` command. Among other things, this means that (assuming a clean environment) these lines do absolutely nothing: # ${foo:=bar} >baz ; echo $foo #${foo:=bar} >baz ; echo $foo while this line: : ${foo:=bar} >baz ; echo $foo sets the variable `foo` to `bar`, creates or truncates the file `baz`, and finally prints `bar\n` to stdout; and this line: :${foo:=bar} >baz ; echo $foo creates or truncate the file `baz`, emits an error to stderr because the command `:bar` does not exist, and finally prints `bar\n` to stdout. It also means that this line: foo=bar # hello sets `foo` to `bar`, but this one: foo=bar : hello does not (or, more accurately, it does, but only for the duration of the `:` command). (except in our sh, but that's a bug) DES -- Dag-Erling Smørgrav - des@FreeBSD.orghome | help
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