Date: Mon, 30 Sep 2024 20:07:31 +0900 (JST)
Message-Id: <20240930.200731.666191321972616000.ishii@postgresql.org>
To: nagata@sraoss.co.jp
Cc: daniel@yesql.se, pgsql-hackers@postgresql.org
Subject: Re: Doc: typo in config.sgml
From: Tatsuo Ishii <ishii@postgresql.org>
In-Reply-To: <20240930193402.e4630ff8288305b480705243@sraoss.co.jp>
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>> I wonder if it would be worth to add a check for this like we have t=
o tabs?

+1.

>> The attached adds a rule to "make -C doc/src/sgml check" for trappin=
g nbsp
>> (doing so made me realize we don't have an equivalent meson target).=

> =

> Your patch couldn't detect 0xA0 in config.sgml in my machine, but it =
works
> when I use `grep -P "[\xA0]"` instead of `grep -e "\xA0"`.
> =

> However, it also detects the following line in charset.sgml.
> (https://www.postgresql.org/docs/current/collation.html)
> =

>  For example, locale und-u-kb sorts '=E0e' before 'a=E9'.
> =

> This is not non-breaking space, so should not be detected as an error=
.=


That's because non-breaking space (nbsp) is not encoded as 0xa0 in
UTF-8. nbsp in UTF-8 is "0xc2 0xa0" (2 bytes) (A 0xa0 is a nbsp's code
point in Unicode. i.e. U+00A0).
So grep -P "[\xC2\xA0]" should work to detect nbsp.

Best reagards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp