CVS commit: src/bin/date

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Tue Sep 17 15:25:39 UTC 2024

Modified Files:
        src/bin/date: date.1 date.c

Log Message:
date(1) says:

STANDARDS
     The date utility is expected to be compatible with IEEE Std 1003.2
     (“POSIX.2”).

yet the format used for the date string arg is:

        [[[[[[CC]yy]mm]dd]HH]MM[.SS]]

whereas POSIX demands

        mmddHHMM[[CC]yy]

Why anyone would ever want to use that archaic form is incomprehensible
to me, yet, that is what is required.

Implement support for the POSIX format if POSIXLY_CORRECT is set in
the environment (in the full date(1) build only) in a rather crude
way that relies upon the user getting the format correct.

Tools builds are unaffected - setting the time is not supported there.
(It could be made to work, half setting the time, using -j, is possible
in tools builds, but pointless, and this cheap implementation uses
strptime() which is not necessarily available to a tools build.)

Mention this (very briefly) in the man page.


To generate a diff of this commit:
cvs rdiff -u -r1.56 -r1.57 src/bin/date/date.1
cvs rdiff -u -r1.69 -r1.70 src/bin/date/date.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.