Hi,
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".
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().
(the recent commit add9182e reorders them alphabetically
but it turns out that it doesn't change the relative positions
of "aligned" / "asciidoc", or "latex" / "latex-longtables"
so \pset format a and \pset format l will continue to
select "aligned" and "latex" as before).
Anyway, "Unique abbreviations are allowed" deserves to
be changed as well.
PFA a doc patch to say simply "Abbreviations are allowed".
Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: http://www.manitou-mail.org
Twitter: @DanielVerite
diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index a1ca940..7dd934f 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -2589,8 +2589,7 @@ lo_import 152801
<literal>latex</literal> (uses <literal>tabular</literal>),
<literal>latex-longtable</literal>, <literal>troff-ms</literal>,
<literal>unaligned</literal>, or <literal>wrapped</literal>.
- Unique abbreviations are allowed. (That would mean one letter
- is enough.)
+ Abbreviations are allowed.
</para>
<para><literal>unaligned</literal> format writes all columns of a
row on one
