Re: Lua 5 Grammar update
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- Subject: Re: Lua 5 Grammar update
- From: Mike Pall <mikelu-0507@...>
- Date: 2005年7月29日 12:59:41 +0200
Hi,
Klaas-Jan Stol wrote:
> >>- Long strings and comments cannot be nested in 5.1.
> >
> So, just to make sure (before I start implementing the whole thing), you
> can't do:
>
> [=[I said: [==[Hello World]==] to him]=]
No, I was imprecise. Sorry. My above sentence should be:
Long strings and comments --> with the same number of '=' <--
cannot be nested in 5.1.
As a corollary, this makes [[xx[[xx]]xx]] a syntax error
(was legal in 5.0). Different number of '=' nest properly.
$ lua51w6 -e 'print [=[I said: [==[Hello World]==] to him]=]'
I said: [==[Hello World]==] to him
$ lua51w6 -e 'print [=[I said: [[Hello World]] to him]=]'
I said: [[Hello World]] to him
$ lua51w6 -e 'print [==[I said: [==[Hello World]==] to him]==]'
lua51w6: (command line):1: '=' expected near 'him'
$ lua51w6 -e 'print [[I said: [[Hello World]] to him]]'
lua51w6: (command line):1: nesting of [[...]] is deprecated near '['
Bye,
Mike