# RAISING AN ERROR
Failed to read the expression for filter: (or #f #f (or #f (and $signature (#/[/ $signature)) #f) #f)
Reason: WRONG-REGEX-SYNTAX
# RAISING AN ERROR (string->regexp)
COMPILE ERROR: WRONG-REGEX-SYNTAX: ()
MEMORY EXHAUSTED or SYNTAX ERROR
Failed to compile the expression of filter: (or #f #f (or #f (and $signature ((string->regexp "[") $signature)) #f) #f)