1.3
Verbatim arguments
Arguments of type v are read in verbatim mode, which will result in the grabbed argument
consisting of tokens of category codes 12 (“other”) and 13 (“active”), except spaces, which
are given category code 10 (“space”). The argument is delimited in a similar manner to
the LATEX 2ε \verb function, or by (correctly nested) pairs of braces.
Functions containing verbatim arguments cannot appear in the arguments of other
functions. The v argument specifier includes code to check this, and will raise an error if