The Kern Shell-style Lexer library.

This namespace is a version of blancas.kern.lexer with the following settings:

comment-start        None
comment-end          None
comment-line         #
nested-comments      No
identifier-start     Letter or _
identifier-letter    Alphanumeric or one of: underscore (_), dash (-), dot (.) 
reserved-names       None
case-sensitive       Yes
line-continuation    Backslash
trim-newline         No