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Remove obsolete advice about doubling backslashes in regex escapes.

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Standard-conforming literals have been the default for long enough that
it no longer seems necessary to go out of our way to tell people to write
regex escapes illegibly.
This commit is contained in:
Tom Lane 2015-11-03 11:57:56 -05:00
parent a69b0b2c14
commit fc0b893521
1 changed files with 0 additions and 10 deletions
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doc/src/sgml/func.sgml
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@ -4656,16 +4656,6 @@ SELECT foo FROM regexp_split_to_table('the quick brown fox', E'\\s*') AS foo;
Non-capturing parentheses do not define subexpressions.
</para>
<note>
<para>
Keep in mind that an escape's leading <literal>\</> will need to be
doubled when entering the pattern as an SQL string constant. For example:
<programlisting>
'123' ~ E'^\\d{3}' <lineannotation>true</lineannotation>
</programlisting>
</para>
</note>
<table id="posix-character-entry-escapes-table">
<title>Regular Expression Character-entry Escapes</title>