#1799: [colorize egg] slow on big files

[Chicken Trac]

#1799: [colorize egg] slow on big files
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            Reporter:  curium   |       Type:  enhancement
              Status:  new      |   Priority:  minor
           Milestone:  someday  |  Component:  extensions
             Version:  5.3.0    |   Keywords:  colorize
Estimated difficulty:           |
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 When trying to colorize big files such as chicken's runtime.c, according
 to chicken profiler, 96% of time is spent on append at line 296. One
 enhancement could be to cons tokens and then return the reversed result.
 Time to colorize runtime.c goes from 10m to 02s.

 Another thing which I would like is to have htmlize exported: if someone
 is using html-colorize, they could need that function to handle a case
 where the text doesn't need colorization.

 Tentative diff attached.

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Ticket URL: <https://bugs.call-cc.org/ticket/1799>
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CHICKEN Scheme is a compiler for the Scheme programming language.