GNU grep 2.12 changes behavior of recursion options, breaks existing scripts

Re:GNU grep 2.12 changes behavior of recursion options, brea... by adavies42 on Thursday July 26, 2012 @11:34AM (#4296507)

ever work on a non-gnu box? (old solaris, *bsd, stock os x, etc.) there's a decent chance they don't have -r at all.

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Re:GNU grep 2.12 changes behavior of recursion options, brea... by cschramm on Thursday July 26, 2012 @11:43AM (#4296566)

*BSDs have (=> OS X probably too).

Solaris, HP-UX and OpenServer have not.

AIX is weird:

> -r Searches directories recursively. By default, links to directories are followed.

> -R Searches directories recursively. By default, links to directories are not followed.

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Re:GNU grep 2.12 changes behavior of recursion options, brea... by rbanffy on Thursday July 26, 2012 @05:27PM (#4298836)

Isn't the AIX behavior the one POSIX specifies?

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Re:GNU grep 2.12 changes behavior of recursion options, brea... by cschramm on Friday July 27, 2012 @12:27AM (#4300018)

Looking at MattJ100's link (http://pubs.opengroup.org/onlinepubs/009695399/utilities/gre...), it seems like POSIX grep actually does not have any recursion.

Hence, only lubutu's comment ("-R is the recursion flag for ls, cp, rm, etc") is true, while _delirium ("-R is the POSIX-standard flag for recursive grep") is wrong, which means AIX is free to do whatever it wants with both the -r and the -R flags.

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Re:GNU grep 2.12 changes behavior of recursion options, brea... by lmm on Thursday July 26, 2012 @06:04PM (#4298994)

That would be kind of perverse given how cp behaves for -r and -R

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