forked from lix-project/lix
Document that builtins.match takes a POSIX extended RE
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@ -213,10 +213,11 @@ if builtins ? getEnv then builtins.getEnv "PATH" else ""</programlisting>
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<varlistentry><term><function>builtins.match</function>
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<replaceable>regex</replaceable> <replaceable>str</replaceable></term>
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<listitem><para>Returns a list if
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<replaceable>regex</replaceable> matches
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<replaceable>str</replaceable> precisely, otherwise returns <literal>null</literal>.
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Each item in the list is a regex group.
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<listitem><para>Returns a list if the <link
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xlink:href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04">extended
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POSIX regular expression</link> <replaceable>regex</replaceable>
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matches <replaceable>str</replaceable> precisely, otherwise returns
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<literal>null</literal>. Each item in the list is a regex group.
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<programlisting>
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builtins.match "ab" "abc"
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@ -236,6 +237,11 @@ builtins.match "a(b)(c)" "abc"
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Evaluates to <literal>[ "b" "c" ]</literal>.
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<programlisting>
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builtins.match "[[:space:]]+([[:upper:]]+)[[:space:]]+" " FOO "
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</programlisting>
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Evaluates to <literal>[ "foo" ]</literal>.
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</para></listitem>
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</varlistentry>
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@ -17,8 +17,11 @@ assert matches "fo+" "foo";
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assert matches "fo{1,2}" "foo";
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assert !matches "fo{1,2}" "fooo";
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assert !matches "fo*" "foobar";
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assert matches "[[:space:]]+([^[:space:]]+)[[:space:]]+" " foo ";
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assert !matches "[[:space:]]+([[:upper:]]+)[[:space:]]+" " foo ";
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assert match "(.*)\\.nix" "foobar.nix" == [ "foobar" ];
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assert match "[[:space:]]+([[:upper:]]+)[[:space:]]+" " FOO " == [ "FOO" ];
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assert splitFN "/path/to/foobar.nix" == [ "/path/to/" "/path/to" "foobar" "nix" ];
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assert splitFN "foobar.cc" == [ null null "foobar" "cc" ];
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