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I hate source filters, it reeks preprocessing.
Preprocessors usually don't know much of the language
they generates and that leads to defensive programing:
If you are not convinced of preprocessor horrors, looks at the source of perl5. Yes, the C preprocessor gets us around the limitation of the language and it is one of the reason why C is still well alive. See the GNU macros that allows the same include files to be both K&R and ANSI-C. It works but it is not pretty. Parrot is indded written in C. But, I like TheDamian source filters because it gets me the perl6 flavor. So, I can get over my dislike of source filters. But they are still a hack. But really with perl6, I hope we will be able to deal with any input without pipelining processors. But there is more indeed to source filters than filters that translate a language in a lesser language. Your examples show that source filters can be useful _and_ lovable. -- stefp -- check out TeXmacs wiki In reply to Re: What do you know about source filters?
by stefp
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