<oerjan> addquote <int-e> I couldn\'t help thinking that maybe if one considers the ramifications in full detail it will turn out that overthinking is often not helpful and therefore, not something to be proud of.

#!../ploki
IF @NOT ("foo" ~ "{.}0!") | (\0 ; "o")
	"error
	END -1
FI
IF "foo" ~ "b"
	"error
	END -1
FI
IF @DEF-P \0
	"ARGH: match variable not reset
	END -1
FI
"ok