sed "s/AAA/$1/g s/BBB/$2/g s/CCC/$3/g s/DDD/$4/g" <<\END func (AAA *BBB) CCC() DDD { return AAA._CCC } func (AAA *BBB) setParent(p *controlParent) { basesetParent(AAA, p) } func (AAA *BBB) allocate(x int, y int, width int, height int, d *sizing) []*allocation { return baseallocate(AAA, x, y, width, height, d) } func (AAA *BBB) preferredSize(d *sizing) (width, height int) { return basepreferredSize(AAA, d) } func (AAA *BBB) commitResize(a *allocation, d *sizing) { basecommitResize(AAA, a, d) } func (AAA *BBB) getAuxResizeInfo(d *sizing) { basegetAuxResizeInfo(AAA, d) } END