Re: Double Newlines

[David Abrahams <dave@boost-consulting.com>]

Katsumi Yamaoka <yamaoka@jpl.org> writes:

>>>>>> In <ubqrdoizi.fsf@boost-consulting.com> David Abrahams wrote:
>
>>> (setq message-send-mail-function
>>>       (lambda nil
>>> 	(let ((coding-system-for-write 'binary))
>>> 	  (write-region (point-min) (point-max) "~/TESTMAIL"))))
>>>
>>> What do you see there?
>
>> This is a test=0D
>> This is only a test=0D
>> If this had been an actual message, we'd tell you.=0D
>
>>> If newlines are doubled already,
>
>> I don't know for sure how to interpret the above, but my first guess
>> is that they're not (right?)
>
> That looks strange to me.  `=0D' is the one that the CR character
> (0x0d) was encoded by quoted-printable.  What does the following
> Lisp form return? (To do that, copy it to the *scratch* buffer
> and type `C-j' at the end of the last line.) [1]
>
> (let ((file (make-temp-file "testing"))
>       (coding-system-for-write 'iso-8859-1)
>       (coding-system-for-read 'binary))
>   (with-temp-file file
>     (insert "foo\n"))
>   (prog1
>       (with-temp-buffer
> 	(insert-file-contents file)
> 	(buffer-string))
>     (delete-file file)))
>
> If you see
>
> "foo^M
> "
> , your Emacs 22 has a bug.  

That's what I see.

> Since Kenichi Handa fixed the bug[2]
> recently[3], updating your Emacs 22 might fix the problem[4].

Okay, that's my next step, thanks.

> [1] It might probably be able to reproduce simply by the form:
>
> (encode-coding-string "foo\n" 'iso-8859-1)

yep.

> [2] Under the system in which the system_eol_type is CRLF (i.e.,
> Windows), Emacs 22 encodes text by the coding system FOO as if
> it is FOO-dos.
>
> [3] (lisp/ChangeLog)
> 2006-07-20  Kenichi Handa  <handa@m17n.org>
>
> 	* international/mule-cmds.el (select-safe-coding-system): Fix the
> 	way of deciding eol-type of the coding system.
>
> [4] I'm not quite sure that `=0D' is decoded into a newline.
>
>>> the cause might be in the Gnus' encoder.  Otherwise, the program to
>>> send mails or the mail server might do something strange.  Whether
>>> or no, I cannot imagine what does it, though.
>
>> I'm running a local Exim on this machine to send the mail out.  Maybe
>> I should be looking at that.  On the other hand, this particular
>> instance of the phenomenon showed up in a newsgroup posting, not a
>> mail message.  I don't think NG postings are handled like regular
>> mail, are they?  If not, then they're not going through Exim and Gnus
>> might still be involved.  Does message-send-mail-function get used for
>> NG postings, or just email?  If it's just for email, then our TESTMAIL
>> test doesn't tell us very much.
>
> If the problem is concerned with the charset encoding, it will
> happen with both mail and news.

Thanks, I'll try rebuilding my emacs now.


-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com