[m-users.] getopt; checking for invalid/illegal option values

[Zoltan Somogyi]

On Sun, 2 May 2021 20:59:30 +0100, "Sean Charles (emacstheviking)" <objitsu at gmail.com> wrote:
> What is the purpose of a special handler ?

To let a single option specified by the user set more than one
option used by the program internally. As you noticed, it can
affect only the option table, which can store only option_data
values, and not of values of user-chosen types.

Zoltan.