Herbert Schulz wrote:

> It may be that polyglossia is more careful about re-defining commands.

I don't speak LaTeX, Herb, but I would be interested to know if in
addition to \newcommand, \renewcommand, etc., there is something along
the lines of

        \defineunlessincompatible <command><parameter list><expansion>

that would check to see if <command> is already defined, if so, compare
its parameter list and expansion with those specified, and warn if
either or both differ, and otherwise silently define <command> as
specified ?

** Phil.


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