Are lexers and parsers really that different in theory?
It seems fashionable to hate regular expressions: coding horror, another blog post.
However, popular lexing based tools: pygments, geshi, or prettify, all use regular expressions. They seem to lex anything…
When is lexing enough, when do you need EBNF?
Has anyone used the tokens produced by these lexers with bison or antlr parser generators?
