pgsql: Doc: work a little harder on the initial examples for regex matc

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Doc: work a little harder on the initial examples for regex matc
Date: 2021-02-01 21:39:21
Message-ID: E1l6gun-0000Xc-Dj@gemulon.postgresql.org
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Doc: work a little harder on the initial examples for regex matching.

Writing unnecessary '.*' at start and end of a POSIX regex doesn't
do much except confuse the reader about whether that might be
necessary after all. Make the examples in table 9.16 a tad more
realistic, and try to turn the next group of examples into something
self-contained.

Per gripe from rmzgrimes. Back-patch to v13 because it's easy.

Discussion: https://postgr.es/m/161215841824.14653.8969016349304314299@wrigleys.postgresql.org

Branch
------
REL_13_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/dae5af6c19f20d954179df5e15afa649fbabb101

Modified Files
--------------
doc/src/sgml/func.sgml | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)

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