1if /true/ fodder 2/1/ 1 3if /false/ 4/2/ 2 5endif fodder 6/3/ 3 7endif 8/a/!/b/ a!b 9/c/ 10/(1)(2)(3)(5)/ ($1)($2)($3)($4)($5) 11/(1)(2)(3)(4)/ ($1)($2)($3)($4) 12/(1)(2)(3)/ ($1)($2)($3) 13# trailing whitespace below 14if /bar/ 15if !/xyzzy/ 16/(elbereth)/ ($1) 17!/(bogus)/ ($1) 18!/find/ Don't have a liquor license 19endif 20endif 21# trailing whitespace above 22! 23# dangling endif and if 24endif 25endif 26if /./ 27if /./ 28/(/ unused 29