bug#54027: Wishlist: Support full CSI u specification for terminal input

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: alexhutcheson@google.com,  54027@debbugs.gnu.org
> Date: Mon, 28 Feb 2022 08:22:05 -0500
> 
> > Thanks, but what is your opinion about which of the combinations we
> > need to add?
> 
> The patch I posted adds all of them, and that reflects my opinion (tho
> the patch only bothered to do it for the `ESC [ 27 ...` format).

Then I must be missing something.  Do you mean this part:

  +    (while (<= #x30 final #x3F)
  +      (push final params) ;And read more.
  +      (setq final (read-char)))
  +    (while (<= #x20 final #x2F)
  +      (push final intermediates)
  +      (setq final (read-char)))

This doesn't add all the 96 characters with the modifiers, it only
adds the digits and the punctuation characters.