[PATCH] document

Hi

The description for "pg_database" [1] mentions the function
"pg_encoding_to_char()", but this is not described anywhere in the docs. Given
that that it (and the corresponding "pg_char_to_encoding()") have been around
since 7.0 [2], it's probably not a burning issue, but it seems not entirely
unreasonable to add short descriptions for both (and link from "pg_conversion"
while we're at it); see attached patch. "System Catalog Information Functions"
seems the most logical place to put these.

[1] https://www.postgresql.org/docs/current/catalog-pg-database.html
[2] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=5eb1d0deb15f2b7cd0051bef12f3e091516c723b

Will add to the next commitfest.

Regards

Ian Barwick

-- 
EnterpriseDB: https://www.enterprisedb.com