doc: Mention how to use quotes with GUC names in error messages

Quotes should not be used except if a GUC name is a natural English
word.

Author: Álvaro Herrera
Discussion: https://postgr.es/m/CAHut+Pv-kSN8SkxSdoHano_wPubqcg5789ejhCDZAcLFceBR-w@mail.gmail.com
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Michael Paquier 2023-11-30 14:19:29 +09:00
parent 8d9978a717
commit a243569bf6
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@ -538,6 +538,14 @@ Hint: The addendum, written as a complete sentence.
variables that will not contain words (for example, operator names).
</para>
<para>
In messages containing configuration variable names, do not include quotes
when the names are visibly not natural English words, such as when they
have underscores, are all-uppercase or have mixed case. Otherwise, quotes
must be added. Do include quotes in a message where an arbitrary variable
name is to be expanded.
</para>
<para>
There are functions in the backend that will double-quote their own output
as needed (for example, <function>format_type_be()</function>). Do not put