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[REBOL] Re: Using 'to in parse dialect

From: lmecir::mbox::vol::cz at: 5-May-2005 7:28

Hallvard Ystad napsal(a):
>Hello folks > >I have a parse problem again. Hope someone here can help (Brett?). > >Heres an example from > >ws: charset {^A^B^C^D^E^F^G^H^-^/^K^L^M^N^O^P^Q^R^S^T^U^V^W^X^Y^Z^[^\^]^!^_ ^~ } >input-string: "fox dog" >parse/all input-string [ [any ws "fox"] [any ws "dog"] ] > >The last parse statement returns 'true. But now, what if we use the 'to: > >input-string: "let's make a new speciaes: a fox dog" >parse/all input-string [ to [any ws "fox"] [any ws "fox"] [any ws "dog"] ] >** Script Error: Invalid argument: any ws fox >** Near: parse/all input-string [to [any ws "fox"] [any ws "fox"] [any ws "dog"]] > >What did I do wrong? > >It seems that 'to in the parse dialect is very restrictive as to what may follow. The same applies to 'thru. > >Please help me someone! > >HY >(Going on holyday tomorrow, reading possible responses after the weekend.) > >Prętera censeo Carthaginem esse delendam >
yes, Hallward, you are right, 'to and 'thru are restricted, while it would be useful to have them more universal. You may have a look at mine or Gabriele's results published at REP. E.g. mine is: -L