LaTeX syntax like \not\subset will be rendered as \u0338\u2282, where \not gets directly replaced as the combining character \u0338 (combining long solidus overlay). However, to achieve the correct result, this combining character should come after the other character. \u0338 is listed in the combining characters list as \\slash, so the correct result can be achieved by either \slash{\subset} or \subset\not.
This change catches commands like \not\subset or \not\in and replaces them with \slash{\subset} and \slash{\in} so that the correct result is rendered.
LaTeX syntax like
\not\subsetwill be rendered as\u0338\u2282, where\notgets directly replaced as the combining character\u0338(combining long solidus overlay). However, to achieve the correct result, this combining character should come after the other character.\u0338is listed in the combining characters list as\\slash, so the correct result can be achieved by either\slash{\subset}or\subset\not.This change catches commands like
\not\subsetor\not\inand replaces them with\slash{\subset}and\slash{\in}so that the correct result is rendered.