Re: Doc patch on psql output formats

"Daniel Verite" <daniel@manitou-mail.org> writes:
> psql's documentation has this mention about output formats:
>  "Unique abbreviations are allowed. (That would mean one letter is enough.)"

> but "one letter is enough" is not true since 9.3 that added
> "latex-longtable" sharing the same start as "latex", and then 
> 9.5 added "asciidoc" with the same first letter as "aligned".

Yeah, that text has clearly outstayed its welcome.

> When a non-unique abbreviation is used, psql uses the first
> match in an arbitrary order defined in do_pset() by
> a cascade of pg_strncasecmp().

Ugh.  Should we not fix the code so that it complains if there's
not a unique match?  I would bet that the code was also written
on the assumption that any abbrevation must be unique.

            regards, tom lane