(?:\s)*(([0-9]+)|.|\n|($))
(1) pattern 0 "12"
(1) "+"
(2) pattern 0 "34"
(?:\s|//.*)*(([0-9]+(?:\.[0-9]*)?)|([a-zA-Z_][a-zA-Z_0-9]*)|("(?:[^"\
]|\\.|\\
)*")|\Q""\E|\Qwhile\E|\Qelse\E|\Qif\E|\Q<>\E|\Q>=\E|.|\n|($))
(1) literal 3 "if"
(1) pattern 1 "iffy"
(1) literal 6 "\"\""
(2) "+"
(2) pattern 0 "1.2"
(2) [eof]