ref: cab9cb06a3816964cf72da4017baa304729ab82d
parent: 62bea23c49cc74d8a894b88002da2290dbc60f82
author: Rangi <remy.oukaour+rangi42@gmail.com>
date: Fri Jan 8 11:28:51 EST 2021
Store IF depth relative to each fstack context This disallows starting/ending an IF inside an INCLUDEd file or a macro expansion