Re: [PATCH] Enable customisation for electric-quote-mode chars

[Eli Zaretskii <eliz@gnu.org>]

> From: Göktuğ Kayaalp <self@gkayaalp.com>
> Cc: eliz@gnu.org, emacs-devel@gnu.org
> Date: Mon, 29 Aug 2016 08:28:19 +0300
> 
> +@vindex electric-quote-chars
>    Electric Quote mode makes it easier to type curved quotes.  As you
>  type characters it optionally converts @t{`} to @t{‘}, @t{'} to @t{’},
>  @t{``} to @t{“}, and @t{''} to @t{”}.  These conversions are
>  suppressed in buffers whose coding systems cannot represent curved
> -quote characters.
> +quote characters.  It's possible to change the default quotes listed
> +above, by customizing the variable @code{electric-quote-chars}, a list
> +of four characters, where the items correspond to the left single
> +quote, the right single quote, the left double quote and the right
> +double quote, respectively, whose default value is
> +@code{'(?‘ ?’ ?“ ?”)}.

There's no need to go to such detail when describing a customizable
option.  The Customize interface should be enough for the user to
figure out what to do.

Which brings me to this:

> +(defcustom electric-quote-chars '(?‘ ?’ ?“ ?”)
> +  "Curved quote characters for `electric-quote-mode'.
> +The items correspond to the left single quote, the right single
> +quote, the left double quote, and the right double quote, respectively."
> +  :version "25.1"
> +  :type 'list :safe 'listp :group 'electricity)
> +

Making it a list with minimal explanations sounds like not very
user-friendly.  How about offering several ready out-of-the-box sets,
each one for some culture we know about?  We could also allow a raw
list, for the power users, but I think less advanced Emacs users will
appreciate something like

  Default (‘..’ “..”)
  Arabic (".." ”..“)
  German  (‚..‛ „..“)
  French (‹..› «..»)
  Cyrillic (‚..‘ «..»)

etc.  WDYT?  (See https://en.wikipedia.org/wiki/Quotation_mark for
some more.)

Thanks.