[patch #10282] port libtool to grep 3.8 and to POSIX

[Paul Eggert]

URL:
  <https://savannah.gnu.org/patch/?10282>

                 Summary: port libtool to grep 3.8 and to POSIX
                 Project: GNU Libtool
               Submitter: eggert
               Submitted: Mon 19 Sep 2022 01:27:13 PM PDT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


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Date: Mon 19 Sep 2022 01:27:13 PM PDT By: Paul Eggert <eggert>
GNU grep 3.8 warns about some regular expressions that POSIX says have
undefined effect, e.g., '\-'. Unfortunately Libtool uses regular expressions
of this form.

I'm attaching two proposed patches against libtool's current HEAD (commit
6132006b5fb6b95f31c30a972fbb829f93e1878b dated 2022-05-16). The first patch
should suffice to pacify GNU grep 3.8. The second patch fixes some other
regular expressions that GNU grep 3.8 does not warn about (I found them with
an even-pickier 'grep').

I did not look systematically for all portability bugs of this form.






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File Attachments:


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Date: Mon 19 Sep 2022 01:27:13 PM PDT  Name:
0001-libtool-port-to-GNU-grep-3.8.patch  Size: 5KiB   By: eggert
Patches to port libtool to GNU and POSIX grep
<http://savannah.gnu.org/patch/download.php?file_id=53720>
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Date: Mon 19 Sep 2022 01:27:13 PM PDT  Name:
0002-libtool-port-better-to-POSIX-grep.patch  Size: 2KiB   By: eggert
Patches to port libtool to GNU and POSIX grep
<http://savannah.gnu.org/patch/download.php?file_id=53721>

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