jarhart/rattler — pull request #7 by wconrad (2014-06-26 00:19:51+00:00)
Title: character sequence

A character sequences matches text a character at a time, exactly as
if each character had been specified separately in a sequence. This
allows whitespace to be skipped between the characters of a literal,
provided that a %whitespace directive is in effect.

A character sequence is written like `%c"..."` or %c'...'`. The "c"
stands for "characters."

The character sequence:

%c"THEN"

is equivalent to

("T" "H" "E" "N")

Most of the time, you probably want a string literal. Character
sequence exists for strange languages like BASIC and Fortran, which
permit whitespace in keywords.