Re: New long comments in 5.1

[Philippe Lhoste <PhiLho@...>]

Jadek wrote:
>  > "little chance of them appearing in normal code"?
>  > What about content of strings, or nested comments?
>
> You just have to look to existing lua conventions for the answer to that...
> Comments inside strings aren't parsed.  Try the following in lua:
>
> var = "test -- test"
> print( var )
>
> If you were to parse comments inside strings, then any set of comment 
> characters
> could appear validly in the language.

You take it the way around, the problem isn't comments inside strings, 
but strings inside comments.

Try:
a = "x ]] y"; print(a)

it works, it is perfectly valid.

Now, takes:

x = [[
a = "x ]] y"; print(a)
]]

You get the following Lua error: unfinished string near `"; printf(a)'

Same if you try to comment out this portion of code with --[[ ... ]]

A comment doesn't look at the syntax of the commented out code, it stops 
at the first occurence of ending sequence.

> As for nested comments, this is a perennial problem which occurs 
> wherever block
> comments are allowed.
[snip]

On reading again my message, I don't know why I mentioned nested 
comments here ;o|

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Philippe Lhoste (Paris -- France)
Professional programmer and amateur artist
http://Phi.Lho.free.fr
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