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| author | Eelco Dolstra <edolstra@gmail.com> | 2017-05-17 12:18:18 +0200 |
|---|---|---|
| committer | Eelco Dolstra <edolstra@gmail.com> | 2017-05-17 12:18:18 +0200 |
| commit | f134fc4cbecc258771272c2418af3b92ade88f80 (patch) | |
| tree | 0a8cdaae65c921624211f20f393f4acdd9a046c4 /doc/manual/expressions | |
| parent | e46090edb101acac20ab1e6260a0ba98c177206a (diff) | |
Document that builtins.match takes a POSIX extended RE
Diffstat (limited to 'doc/manual/expressions')
| -rw-r--r-- | doc/manual/expressions/builtins.xml | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml index 63d13e184..8a3266106 100644 --- a/doc/manual/expressions/builtins.xml +++ b/doc/manual/expressions/builtins.xml @@ -213,10 +213,11 @@ if builtins ? getEnv then builtins.getEnv "PATH" else ""</programlisting> <varlistentry><term><function>builtins.match</function> <replaceable>regex</replaceable> <replaceable>str</replaceable></term> - <listitem><para>Returns a list if - <replaceable>regex</replaceable> matches - <replaceable>str</replaceable> precisely, otherwise returns <literal>null</literal>. - Each item in the list is a regex group. + <listitem><para>Returns a list if the <link + xlink:href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04">extended + POSIX regular expression</link> <replaceable>regex</replaceable> + matches <replaceable>str</replaceable> precisely, otherwise returns + <literal>null</literal>. Each item in the list is a regex group. <programlisting> builtins.match "ab" "abc" @@ -236,6 +237,11 @@ builtins.match "a(b)(c)" "abc" Evaluates to <literal>[ "b" "c" ]</literal>. +<programlisting> +builtins.match "[[:space:]]+([[:upper:]]+)[[:space:]]+" " FOO " +</programlisting> + +Evaluates to <literal>[ "foo" ]</literal>. </para></listitem> </varlistentry> |