# Interpolate regular expressions.
name = 'Moe'

ok not not '"Moe"'.match(/^"#{name}"$/i)
ok '"Moe!"'.match(/^"#{name}"$/i) is null

ok not not 'Moe'.match(/^#name$/)
ok 'Moe!'.match(/^#name/)

ok 'Moe!'.match(/#{"#{"#{"#name"}"}"}/imgy)

ok '$a$b$c'.match(/\$A\$B\$C/i)

a = 1
b = 2
c = 3
ok '123'.match(/#a#b#c/i)

[a, b, c] = [1, 2, /\d+/]
ok (/#a#b#c$/i).toString() is '/12/\\d+/$/i'