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Introduce t_isalnum() to replace t_isalpha() || t_isdigit() tests.

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ts_locale.c omitted support for "isalnum" tests, perhaps on the
grounds that there were initially no use-cases for that.  However,
both ltree and pg_trgm need such tests, and we do also have one
use-case now in the core backend.  The workaround of testing
isalpha and isdigit separately seems quite inefficient, especially
when dealing with multibyte characters; so let's fill in the
missing support.

Discussion: https://postgr.es/m/2548310.1664999615@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2022-10-06 11:08:56 -04:00
parent 5757141cae
commit ca71131eeb
5 changed files with 20 additions and 3 deletions
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2
src/backend/utils/adt/tsquery.c
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@ -248,7 +248,7 @@ parse_or_operator(TSQueryParserState pstate)
return false;
/* it shouldn't be a part of any word */
if (t_iseq(ptr, '-') || t_iseq(ptr, '_') || t_isalpha(ptr) || t_isdigit(ptr))
if (t_iseq(ptr, '-') || t_iseq(ptr, '_') || t_isalnum(ptr))
return false;
for (;;)