Function: Converts the string STRING to a keyword where all characters are uppercase or lowercase, taking into account the current readtable case. Might destructively modify STRING if DESTRUCTIVEP is true which is the default. "Knows" several HTTP header names and methods and is optimized to not call INTERN for these.
lambda-list-keywords
Variable: A list of symbols used as lambda list keywords in SBCL.
Example:
(defunrequired-args
(lambda-list
&optional (collector #'identity))
(loop for arg in lambda-list
until (member arg lambda-list-keywords)
collect (funcall collector arg)))