elisp substitution

elisp substitution

[matt]

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;

Thanks,

Matt
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Re: elisp substitution

[Friedrich Dominicus]

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

Re: elisp substitution

[Christopher J. White]

>>>>> "fd" == Friedrich Dominicus <frido@q-software-solutions.com> writes:

fd> \ are unfine in Emacs lisp but here we go
fd> (defvar *str* "c:\\Dokumente und Einstellungen\\")

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

'replace-in-string' doesn't seem to be defined  21.2.1...
However, 'dired-replace-in-string' is if you (require 'dired)

...cj

Re: elisp substitution

[Jesper Harder]

chris@grierwhite.com (Christopher J. White) writes:

> 'replace-in-string' doesn't seem to be defined  21.2.1...

It is called `replace-regexp-in-string' in Gnu Emacs 21.x. 
(But `replace-in-string' in XEmacs).