Commit 6aae7d06 authored by qrczak's avatar qrczak
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[project @ 2001-03-23 09:33:22 by qrczak]

hsc2hs lexical rules clarified.
parent 2947e534
......@@ -229,26 +229,28 @@ tags:
</sect2>
<sect2><title>Input syntax</title>
<para>All special processing is triggered by the
<literal>#</literal> character placed outside Haskell comments
and string literals. To output a literal <literal>#</literal>,
write it twice: <literal>##</literal>.</para>
<para>Otherwise <literal>#</literal> is followed by optional
spaces and tabs, an alphanumeric key that describes the
kind of processing, and its arguments. Arguments look
like C expressions separated by commas and extend up to the
nearest unmatched <literal>)</literal>, <literal>]</literal>,
or <literal>}</literal>, or to the end of line outside any
<literal>() [] {} '' "" /* */</literal>. Any character may be
preceded by a backslash and will not be treated specially.</para>
<para>All special processing is triggered by
the <literal>#</literal> operator. To output
a literal <literal>#</literal>, write it twice:
<literal>##</literal>. Inside string literals and comments
<literal>#</literal> characters are not processed.</para>
<para>A <literal>#</literal> is followed by optional
spaces and tabs, an alphanumeric keyword that describes
the kind of processing, and its arguments. Arguments look
like C expressions separated by commas (they are not
written inside parens). They extend up to the nearest
unmatched <literal>)</literal>, <literal>]</literal> or
<literal>}</literal>, or to the end of line if it occurs outside
any <literal>() [] {} '' "" /**/</literal> and is not preceded
by a backslash. Backslash-newline pairs are stripped.</para>
<para>In addition <literal>#{stuff}</literal> is equivalent
to <literal>#stuff</literal> except that it's self-delimited
and thus needs not to be placed at the end of line or in some
brackets.</para>
<para>Meanings of specific keys:</para>
<para>Meanings of specific keywords:</para>
<variablelist>
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