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Second round of proposals for directives Lassi Kortela (17 Feb 2021 08:34 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (17 Feb 2021 08:53 UTC)
Re: Second round of proposals for directives Lassi Kortela (17 Feb 2021 09:25 UTC)
Re: Second round of proposals for directives Lassi Kortela (17 Feb 2021 09:43 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (17 Feb 2021 09:51 UTC)
Re: Second round of proposals for directives Lassi Kortela (17 Feb 2021 10:11 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (17 Feb 2021 10:31 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (17 Feb 2021 09:44 UTC)
Re: Second round of proposals for directives Lassi Kortela (17 Feb 2021 10:01 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (17 Feb 2021 10:43 UTC)
Re: Second round of proposals for directives John Cowan (18 Feb 2021 02:56 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (18 Feb 2021 10:37 UTC)
Re: Second round of proposals for directives Vladimir Nikishkin (18 Feb 2021 15:42 UTC)
Re: Second round of proposals for directives Marc Nieper-Wißkirchen (18 Feb 2021 15:51 UTC)

Re: Second round of proposals for directives Lassi Kortela 17 Feb 2021 09:43 UTC

In fact, the line directive parser could be a procedure that takes the
directive as a free-form string, and outputs a Scheme object (foo ...)
that corresponds to typing #!(foo ...).

So it would be like a macro expander, pre-processor, or translator, to
translate foreign directives into Scheme directives.

#! Encoding: EUC-JP

would be fed to something like:

(lambda (line)
   (let ((words (split-at-whitespace line)))
     (if (and (= 2 (length words))
              (string-ci=? "encoding:" (car words)))
         `(encoding (string->symbol ,(cadr words)))
         #f)))

and the result would be as if the file had:

#!(encoding EUC-JP)