From: Andrew Stone <stonelists@...>
Date: 2007-02-08T09:34:28+09:00
Subject: Re: Wanting clarification for string delimiters

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On 2/7/07, Neville Franks <subs@surfulater.com> wrote:
>
> %q, %Q, %w, %r, %x all begin a string which terminates with the
> character that matches the character after %q etc. eg. %q[blah] %q/blah/
>
> But what are the rules for %SomeChar. eg %(blah) works as does %/blah/
> and %+blah+
>
> However %AblahA doesn't, nor does %1blah1. Does this mean the delimiter
> following % must be a punctuation character? Other than the predefined
> %q etc. listed above of course.
>
> http://www.zenspider.com/Languages/Ruby/QuickRef.html states:
> ---
>
> In all of the %() cases below, you may use any matching characters or
> any single character for delimiters. %[], %!!, %@@, etc.
>
> 'no interpolation'
> "#{interpolation}, and backslashes\n"
> %q(no interpolation)
> %Q(interpolation and backslashes)
> %(interpolation and backslashes)
> `echo command interpretation with interpolation and backslashes`
> %x(echo command interpretation with interpolation and backslashes)
>
> ---
>
> This says "any single character" etc. which isn't correct in my testing.
>
> This is for the continuing work I'm doing on adding Ruby syntax to our
> IDE ED4W.
>
> ---
> Neville Franks, http://www.getsoft.com http://www.surfulater.com
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
According to the "Programming Ruby" book the delimiter can be any
nonalphanumeric or nonmultibyte character.

-andy

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