[REBOL] Re: Strange parsing behavior
From: robert:muench:robertmuench at: 3-Aug-2002 13:04
> -----Original Message-----
> From: [rebol-bounce--rebol--com] [mailto:[rebol-bounce--rebol--com]]
> On Behalf Of Gabriele Santilli
> Sent: Saturday, August 03, 2002 11:02 AM
> To: Robert M. Muench
> Subject: [REBOL] Re: Strange parsing behavior
> >> parse "this is a test" [copy word [to "a" to end]]
> == true
> >> word
> == "this is a test"
> It's the end of the sub-rule, since COPY copies what is
> matched by the next element in the rule, that is the
> sub-rule in this case.
Ok, ok but I still find it a bit strange. In your example to "a" can be
deleted and the result won't change. I would expect the resulting string
to grow while parsing is done:
>> parse "this is a test" [copy word [to "a" (?? word) to end (??
> word: "this is"
> word: "this is a test"
> Place COPY *inside* the sub-rule if
> you want to get the result you were expecting.
Unfortunately this doesn't work for complex cases. Try the following,
which can't be done:
Text: "this-is-a test of some parsing^/
this-is-a - test of some parsing"
The result should be
Text: ["this-is-a test of some parsing" "this-is-a" "test of some
You have to solve the problem to trigger on " - " or 'newline whichever
comes first ;-). Robert