bug#4623: 23.1.50; rmail changes encoding of characters on save

[Stefan Monnier]

>> That would be fine, yes.  I'd suggest to use an rmail-coding-system
>> variable as the canonical place to store the coding system used for the
>> currently shown message, use it in rmail-reply in preference to
>> buffer-file-coding-system, and simply copy rmail-coding-system to
>> buffer-file-coding-system whenever necessary, such as in
>> after-save-hook.

> Well, I did precisely that, as you could see, but then Markus pointed
> out that a single global variable will not work when there are more
> than one Rmail buffer.

Of course, just like buffer-file-coding-system, it should be buffer-local.


        Stefan