bug#43865: mml-attach-file could call system file chooser

[積丹尼 Dan Jacobson]

Face the facts, no matter what settings you mentioned,
no matter what the values, C-c C-a is not going to start the system's
file chooser!

No file chooser for Grandpa.

>>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
>> From: 積丹尼 Dan Jacobson <jidanni@jidanni.org>
>> Cc: 43865@debbugs.gnu.org
>> Date: Thu, 08 Oct 2020 20:32:23 +0800
>> 
>> >>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
>> >> See the variable use-dialog-box.
EZ> And the companion variable use-file-dialog.
>> 
>> Testing with emacs -q:
>> Both are "'t", but C-c C-a still doesn't turn on the file chooser.
>> I still need to click "Attach File" from the tool bar to do that.
>> But I want C-c C-a also to do that. But it doesn't.

EZ> Yes, as documented.