:+one+ +two+ +three+: :x1y x2y x3y: :x1y x2y x3y: :mod-loop-varname: :x1y x2y x3y: :: :x1y x2y x3y: mod-loop-resolve:w1d2d3w w2i3w w1i2d3 2i${RES3}w w1d2d3 2i${RES3} 1i${RES2}w: mod-loop-varname-dollar:(1) (2) (3). mod-loop-varname-dollar:() () (). mod-loop-varname-dollar:() () (). mod-loop-dollar:1: mod-loop-dollar:${word}$: mod-loop-dollar:$3$: mod-loop-dollar:$${word}$$: mod-loop-dollar:$$5$$: mod-loop-dollar:$$${word}$$$: exit status 0