[REBOL] Re: parse, again...
From: nitsch-lists:netcologne at: 2-Nov-2001 7:19
RE: [REBOL] Re: parse, again...
[lmecir--mbox--vol--cz] wrote:
> Hi Halvard,
>
> > But try
> > html-code: [ copy tag ["<" thru ">"] | copy txt [to "<" | to end] (print
> txt)]
> > parse/all read http://www.rebol.com/ [to "<" some html-code]
> >
> > ...and see what you get... (Why?)
> >
> > ~H
> >
> > Praetera censeo Carthaginem esse delendam
>
> your bug simplified:
>
> rule1: [to end]
> parse/all "a" [some rule1]
>
> you cannot write a rule like this, because parse will run forever (hint:
> rule1 is always fulfilled). This is why the correct form of your rule should
> be:
>
> html-code: [ copy tag ["<" thru ">"] | copy txt [to "<" | some skip]
> (print txt)]
> parse/all read http://www.rebol.com/ [to "<" some html-code]
or [skip to end], which tells you want at least one char in the string.
html-code: [ copy tag ["<" thru ">"]
| copy txt [to "<" | skip to end] (print txt)]
parse/all read http://www.rebol.com/ [to "<" some html-code]
-Volker
