Date: Wed, 08 Jun 2022 23:15:45 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 264559] unexpand: nonconformantly (to both POSIX and heirloom) replaces single spaces with tabs Message-ID: <bug-264559-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264559 Bug ID: 264559 Summary: unexpand: nonconformantly (to both POSIX and heirloom) replaces single spaces with tabs Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: nabijaczleweli@nabijaczleweli.xyz In many ways this report mirrors https://bugs.debian.org/1012545: printf 'a b' | unexpand -t1 | cat -A printf 'a b' | unexpand -t2 | cat -A both yield a^I b and printf 'a b' | unexpand -t2,3 | cat -A yields a^Ib According to 4.2BSD: If the -a option is given, then tabs are inserted whenever they would compress the resultant file by replacing two or more characters. of course, heirloom unexpand doesn't take tab lists, but this is still wrong according to Issue 7 (quoth IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008)): In addition to translating <blank> characters at the beginning of each line, translate all sequences of two or more <blank> characters immediately preceding a tab stop to the maximum number of <tab> characters followed by the minimum number of <space> characters needed to fill the same column positions originally filled by the translated <blank> characters. The correct output for all three is, of course: a b (NetBSD and the illumos gate agree; coreutils is broken differently, but that's unrelated). Best, наб -- You are receiving this mail because: You are the assignee for the bug.home | help
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