[REBOL] Re: Re(2): 'parse trick and 'unset
From: chaz:innocent at: 17-Dec-2000 15:32
At 03:34 AM 12/17/00 +1100, you wrote:
>Change 'id, so that the full code is:
>
>line1: "Ju<li>e<><><<1234>"
>line2: "Jules<1234>ffg<5678>"
>digits: charset "0123456789"
>id: ["<" 3 4 digits ">"]
>rule: [a: some [id | [skip b:]] (print copy/part a b)]
>parse line1 rule
>parse line2 rule
>
>Why? Because in 'line2 we instantly found 2 id's and
>got to the end in two steps. That's because id
>began with [thru ">" ...], which means "jump through
>all input until after the first ">".
>This happens twice and we're finished already.
>Remove the 'thru, and 'id is defined more precisely.
Your new code makes it possible to capture what is being parsed! Thanks.
block: copy []
line2: "Jules<1234>ffg<5678>"
digits: charset "0123456789"
id: ["<" 3 4 digits ">"]
rule: [a: some [c: id d: (append block copy/part c d)| [skip b:]] (print
copy/part a b)]
parse line2 rule
print block
