Variable MhchemReplacements`Const`

MhchemReplacements: Map<
    string
    | ((match: string, arrow: string) => string),
    RegExp,
> = ...

Replace these constructs in mhchem output now that we have stretchy versions of the needed arrows

Param: match

The matching macro name

Param: arrow

The arrow name (without the backslash).

Returns

The mhchem arrow name, if there is one.