Date: Sat, 11 Feb 2023 05:33:00 GMT From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: d646513e57c9 - main - getopt_long(3): note an inconsistency with getopt(3) in BUGS Message-ID: <202302110533.31B5X0T0017632@gitrepo.freebsd.org>
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The branch main has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=d646513e57c9d59a7c0cc27a4d41518110db4359 commit d646513e57c9d59a7c0cc27a4d41518110db4359 Author: Kyle Evans <kevans@FreeBSD.org> AuthorDate: 2023-02-11 05:31:13 +0000 Commit: Kyle Evans <kevans@FreeBSD.org> CommitDate: 2023-02-11 05:32:50 +0000 getopt_long(3): note an inconsistency with getopt(3) in BUGS getopt_long(3) will not allow an `optind` setting of 0 to be bug-for-bug compatible with the GNU implementation, as some software does rely on it. Document it as a BUG, since it affects previous declarations of compatibility with getopt(3). Reviewed by: pauamma (markup) Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D37867 --- lib/libc/stdlib/getopt_long.3 | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/lib/libc/stdlib/getopt_long.3 b/lib/libc/stdlib/getopt_long.3 index ab5da7387a45..0ac5d574c38e 100644 --- a/lib/libc/stdlib/getopt_long.3 +++ b/lib/libc/stdlib/getopt_long.3 @@ -31,7 +31,7 @@ .\" @(#)getopt.3 8.5 (Berkeley) 4/27/95 .\" $FreeBSD$ .\" -.Dd May 2, 2018 +.Dd December 24, 2022 .Dt GETOPT_LONG 3 .Os .Sh NAME @@ -546,3 +546,19 @@ is set). The implementation can completely replace .Xr getopt 3 , but right now we are using separate code. +.Pp +.Nm +makes the assumption that the first argument should always be skipped because +it's typically the program name. +As a result, setting +.Va optind +to 0 will indicate that +.Nm +should reset, and +.Va optind +will be set to 1 in the process. +This behavior differs from +.Xr getopt 3 , +which will handle an +.Va optind +value of 0 as expected and process the first element.
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