_ESC
_ESC|_PUN, _PUN, _PUN, _PUN,
#define QUOTES (_QF|_QB|_ESC) /* \ ' " ` */
while (!cmap(c, _ESC | _META | _QF | _QB) && !any("${}:", c)) {
if (cmap(c, _META | _ESC))
else if (cmap(c, _META | _QF | _QB | _ESC)) {