Re: elisp substitution

[Friedrich Dominicus <frido@q-software-solutions.com>]

matt <nwzmattXX@XXnetscape.net> writes:

> I'm just starting to play around with emacs lisp. A quick
> question. How can I manipulate variables in elisp? For instance, I
> want to take a string and add a backslash(escape) to all
> whitespace. Like in a path like
> 
> "c:/Documents and settings/" I want to change it to
> "c:/Documents\ and\ Settings/".
> 
> Something similar to this in perl: $var =~ s/( )/\\$1/g;
\ are unfine in Emacs lisp but here we go
(defvar *str* "c:\\Dokumente und Einstellungen\\")

(replace-in-string *str* (regexp-quote "\\") "/" )
"c:/Dokumente und Einstellungen/"

If I would not use regexp-quote I would have to write 
"\\\\" the so calles scatterd tootpick syndrome ;-)

If you would just have nearly everything else it would be easier
Regards
Friedrich