In a message dated Sun, 9 Jun 2002, Damian Conway writes:
> Trey Harris wrote:
> > rule parsetag :w {
> > <lt> $tagname := <identifier>
> > %attrs := [ (<identifier>) =
> > (<val>)
> > ]*
> > /?
> > <gt>
> > }
On second reading, it occurs to me that this wouldn't work quite right,
because the :w would imply a \s+ between <lt> and <identifier>, between
the equals, and before the <gt>. Does an explicit space assertion in :w
automatically suppress the implicit ones on either side? I.e., would
rule parsetag :w {
<lt> \s* $tagname := <identifier>
%attrs := [ (<identifier>) = <val> ]*
\s* /?
<gt>
}
Work? Or would I have to be explicit about everything:
rule parsetag {
<lt> \s* $tagname := <identifier> \s+
%attrs := [ (<identifier>) \s* = \s*
(<val>) \s* ]*
\s* /?
<gt>
}
It strikes me that this is a problem crying out for a DWIMmy
solution--something that could deal with whitespace in a common way, i.e.,
required between tokens that can't otherwise be differentiated.... am I
missing something?
Trey
