Re: On the subject of Lua's grammar... --[[ ]]

["Adam D. Moss" <adam@...>]

Roberto Ierusalimschy wrote:
> > It would be nice if the parser could either count the [[ and ]] balance
>
> It does. The problem is that, in regular code, `]]' usually appears
> without a corresponding `[[' (e.g., `a[b[i]]').

It occurred to me after sending that this was always the case
for me too...

> > or allowed a different block-comment format whose terminator sequence
> > wasn't valid Lua grammar.
>
> It will. Lua 5.1 will generalize `[[ ]]' to `[*...*[ ]*...*]', so

That's great news.

> that a `[*[' only closes with a `]*]' (same number of stars). That
> will allow the inclusion of *any* literal string inside Lua code without
> modifications.
>
> The syntax is not very pretty, but to allow any literal string we need
> variable delimiters.

That syntax does look pretty wacky, but in this case I'm
happy with whatever works. :)

Thanks,
--Adam
--
Adam D. Moss   . ,,^^   adam@gimp.org   http://www.foxbox.org/   co:3
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