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m4: Support long options.

Description

m4: Support long options.

The option names are identical to those of the equivalent options in GNU m4, except of course for --gnu which does not exist in GNU m4.

While here, make the argument to -d / --debug optional, with the same default behavior as in GNU m4, and document it properly.

Sponsored by: Klara, Inc.
Reviewed by: kevans, imp
Differential Revision: https://reviews.freebsd.org/D40694

Details

Provenance
desAuthored on Jun 21 2023, 8:58 PM
Reviewer
kevans
Differential Revision
D40694: m4: Support long options.
Parents
rG02b885b09d1e: tcp: fix TCP MD5 computation for the BBR and RACK stack
Branches
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