The character classes are used to define what a keyword looks like. For instance, in the C language, the acceptable characters making up a symbol are the upper and lower case letters, the digits (0-9) and the underscore. ABC_DEF is a perfectly valid symbol name. In some other language, maybe the underscore is not valid; in shell scripts, the dollar sign is used to introduce a symbol but can also terminate a symbol name, e.g. $HOST$PWD. The character class definitions are pseudo-regular expressions containing character classes using the [..] notation.


"I am a newcomer to Linux, and I was very disappointed with "standard" UNIX editors like vi and emacs. The user interface is so unfriendly and the feature set is so antiquated. I heard about CRiSP on the comp.editors newsgroup and downloaded a free demo...It's just wonderful! Thoroughly modern, easy to use, powerful, flexible; it's what a UNIX programmer's editor should be."

Crisp Screenshots