[Haskell-cafe] how to get started: a text application

Bayley, Alistair Alistair_Bayley at ldn.invesco.com
Fri Jun 25 08:38:17 EDT 2004

> From: Max Ischenko [mailto:max at ucmg.com.ua] 
> Well, yes. In Markdown, like in most other "rich-text" 
> formats symbols are overloaded a lot. After all, it has to 
> constrain itself to "plain text".
> I'm going to try a "two-stage tokenization" (not sure how to 
> name this correctly). Basically, first I'd split the raw text 
> into "symbols" (like space, char, digit, left-bracket) and 
> then turn these symbols into tokens (like paragraph, 
> reference, start bold text, end bold text, etc.)

Markdown looks a lot like Wiki source to me i.e. it looks like the text
source for a Wiki page. It seems to serve the same purpose i.e.
well-formatted plain text intended for conversion to HTML.

Many (most?) Wiki engines use straightforward regex substitution to convert
the text source into HTML, rather than implement a
lexer/parser/pretty-printer combination. Obviously this makes for a fairly
simple implementation. Mind you, some of the regex's are quite complex...

See, for example:

  Source for Moin-moin, which runs the Haskell wiki:

  Original c2.com wiki (actual source a bit hard to find):

  ... which leads to:

Confidentiality Note: The information contained in this 
message, and any attachments, may contain confidential 
and/or privileged material. It is intended solely for the 
person(s) or entity to which it is addressed. Any review, 
retransmission, dissemination, or taking of any action in 
reliance upon this information by persons or entities other 
than the intended recipient(s) is prohibited. If you received
this in error, please contact the sender and delete the 
material from any computer.

More information about the Haskell-Cafe mailing list