Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!mcvax!kth!osiris!uplog!lynx!pem
From: pem@zyx.SE (Per-Erik Martin)
Newsgroups: comp.lang.c
Subject: Re: Want a way to strip comments from a
Message-ID: <858@lynx.zyx.SE>
Date: 23 Mar 89 16:25:38 GMT
References: <7150@siemens.UUCP> <9900010@bradley> <4896@cbnews.ATT.COM> <852@lynx.zyx.SE> <9833@megaron.arizona.edu>
Reply-To: pem@lynx.zyx.SE (Per-Erik Martin)
Organization: ZYX Sweden AB, Stockholm, Sweden
Lines: 33

In article <9833@megaron.arizona.edu> rupley@arizona.edu (John Rupley) writes:
>
>This one fails, too.  Try:
>
>	/***/ hi there /**/
>
Oops! Well, if you change the '*'-case in 'in_comment:' to this:

   do {
     if ((c = (char)getchar()) == '/')
       goto into_code;
   } while (c == '*');

it should work better. (Funny no one found the other bug yet... What do
you expect after 15 minutes? ;-)

>Goes to show, for a quick and clean coding of a pattern-matching
>automaton, think Lex.  The Lex source that was posted is so simple it
>would be hard to get the logic wrong.  Two out of two C postings suggest
>that it may be easier to err in coding the same automaton in C.
>
>Not to imply that C has no advantages -- following comparison is for
>size of source and for time of uncommenting main.c of an emacs distribution:
>
>[...timings...]

Another advantage with C is that it's portable outside the Unix universe...

-- 
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- Per-Erik Martin, ZYX Sweden AB, Bangardsgatan 13, S-753 20  Uppsala, Sweden -
- Email: pem@zyx.SE                                                           -
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