Dealing with Unicode

Dealing with Unicode

[Alex Schroeder]

Sometimes I'm writing an email that contains "Emoji" characters 
such as this one:

----------------------------------------------------------------------
             position: 219 of 800 (27%), column: 34
            character: 😍 (displayed as 😍) (codepoint 128525, 
            #o373015, 
#x1f60d)
    preferred charset: unicode (Unicode (ISO10646))
code point in charset: 0x1F60D
               syntax: w 	which means: word
             category: .:Base
             to input: type "C-x 8 RET HEX-CODEPOINT" or "C-x 8 
             RET 
NAME"
          buffer code: #xF0 #x9F #x98 #x8D
            file code: #xF0 #x9F #x98 #x8D (encoded by coding 
            system 
utf-8)
              display: no font available

Character code properties: customize what to show
  name: SMILING FACE WITH HEART-SHAPED EYES
  general-category: So (Symbol, Other)
  decomposition: (128525) ('😍')
----------------------------------------------------------------------

After a few seconds, I get shown the buffer ` *Format Temp 0*' and 
a warning:

----------------------------------------------------------------------
These default coding systems were tried to encode text
in the buffer ` *Format Temp 0*':
  (emacs-mule (164 . 128525))
However, each of them encountered characters it couldn't encode:
  emacs-mule cannot encode these: 😍

Click on a character (or switch to this window by `C-x o'
and select the characters by RET) to jump to the place it appears,
where `C-u C-x =' will give information about it.

Select one of the safe coding systems listed below,
or cancel the writing with C-g and edit the buffer
   to remove or modify the problematic characters,
or specify any other coding system (and risk losing
   the problematic characters).

  utf-8 gb18030 utf-7 utf-16 utf-16be-with-signature
  utf-16le-with-signature utf-16be utf-16le utf-8-auto
  utf-8-with-signature utf-8-nfd utf-7-imap utf-8-emacs
----------------------------------------------------------------------

How can I prevent this error message? Why is Gnus (or Emacs?) 
using emacs-mule to save this buffer?

My .emacs contains this setting:

(prefer-coding-system 'utf-8)

Cheers
Alex
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Re: Dealing with Unicode

[Alex Schroeder]

Alex Schroeder <alex@gnu.org> writes:

>  name: SMILING FACE WITH HEART-SHAPED EYES
>
> After a few seconds, I get shown the buffer ` *Format Temp 0*' 
> and a
> warning:
>
> ----------------------------------------------------------------------
> These default coding systems were tried to encode text
> in the buffer ` *Format Temp 0*':
>  (emacs-mule (164 . 128525))
>
> How can I prevent this error message? Why is Gnus (or Emacs?) 
> using
> emacs-mule to save this buffer?

Perhaps the culprit is an entry in auto-coding-alist:

 ("/#[^/]+#\\'" . emacs-mule)

I'll try using utf-8 and we'll see how it goes.

Re: Dealing with Unicode

[Tassilo Horn]

Alex Schroeder <alex@gnu.org> writes:

Hi Alex,

>>  name: SMILING FACE WITH HEART-SHAPED EYES
>>
>> After a few seconds, I get shown the buffer ` *Format Temp 0*' and a
>> warning:
>>
>> ----------------------------------------------------------------------
>> These default coding systems were tried to encode text
>> in the buffer ` *Format Temp 0*':
>>  (emacs-mule (164 . 128525))
>>
>> How can I prevent this error message? Why is Gnus (or Emacs?) using
>> emacs-mule to save this buffer?
>
> Perhaps the culprit is an entry in auto-coding-alist:
>
> ("/#[^/]+#\\'" . emacs-mule)
>
> I'll try using utf-8 and we'll see how it goes.

I've just tried sending a mail with that unicode character, and Gnus
didn't message an error.  The mail is sent as utf-8.

  Content-Type: text/plain; charset=utf-8
  Content-Transfer-Encoding: base64

I don't have any configurations with respect to coding systems, neither
for Gnus nor for message or emacs in general.

Bye,
Tassilo

Re: Dealing with Unicode

[Alex Schroeder]

Tassilo Horn <tsdh@gnu.org> writes:
> Alex Schroeder <alex@gnu.org> writes:
>>>  name: SMILING FACE WITH HEART-SHAPED EYES
>>>
>>> After a few seconds, I get shown the buffer ` *Format Temp 0*' and a
>>> warning:
>>>
>>> ----------------------------------------------------------------------
>>> These default coding systems were tried to encode text
>>> in the buffer ` *Format Temp 0*':
>>>  (emacs-mule (164 . 128525))
>>
>> Perhaps the culprit is an entry in auto-coding-alist:
>>
>> ("/#[^/]+#\\'" . emacs-mule)
>>
>> I'll try using utf-8 and we'll see how it goes.
>
> I've just tried sending a mail with that unicode character, and Gnus
> didn't message an error.  The mail is sent as utf-8.
>
>   Content-Type: text/plain; charset=utf-8
>   Content-Transfer-Encoding: base64
>
> I don't have any configurations with respect to coding systems, neither
> for Gnus nor for message or emacs in general.

Hi Tassilo

Sending never was a problem. My problem was that Gnus or Emacs was
trying to autosave the " *Format Temp 0*" buffer using emacs-mule. Once
I added the setting I mentioned above, the problem stopped.

Cheers
Alex