Testing whitespace

[Jany Quintard <quintard.j@xxxxxx>]

Thanks Brandon and Peter. 
 
> Quoting Jany Quintard <quintard.j@xxxxxx>:
> > When processing the content (character data) of an element, I want to
know
> > if this element contains only space characters. It is easy to use a
loop
> > to check if each character is equal to #\space.
> > But, a space can also be a newline, a tabulation and so on.
> > So, is there a best way to check spaces (I guess using properties)
than
> > comparing a character to a list of values ?
> > 
> Quoting Brandon Ibach <bibach@xxxxxxxxxxxxxx>
>    Well, Peter will have to speak to the relative speed of this method
> as opposed to using (member) against a list of whitespace characters,
> but you could use:  (char-property 'input-whitespace? c), where "c" is
> the character in question.
This seems a much cleaner way to do it.

>    This requires OpenJade 1.3, as 1.2.2 will simply return false for
> every character.
This makes the post from Alexander Sieb <alex@xxxxxxx> (OpenJade 1.3
binaries for Windows NT/2000 available) an even better new, because if
I am a Linux user, my clients are mainly Windows users..

> Quoting Peter Nilsson <pnidv96@xxxxxxxxxxxxxx>
> It should be quiet fast. It is a primitive that searches a 3-level tree
> for the value. The (member ...) approach is a little slower. I'd
recommend
> using char-property. Please tell me if there are any performance
problems,
Well, it seems that there are none. It works fine, on my both platforms.

(my apologies for the long quotings)
Jany.



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