Re: edited file is deleted when the file cannot be saved because of its coding system

[Kenichi Handa <handa@m17n.org>]

In article <2427-Fri06Jun2003143434+0300-eliz@elta.co.il>, "Eli Zaretskii" <eliz@elta.co.il> writes:
>>  > Select one of the following safe coding systems: >
>> utf-8 mule-utf-16-le mule-utf-16-be raw-text emacs-mule >
>> no-conversion
>>  > ---------------
>>  
>>  > After that, I have entered C-g to escape from this
>> function.  > At this point, my original file has gone
>> (and, there is no > recovery file yet).
>>  
>>  I can't reproduce it.  The original file still exists
>> after I type C-g at the above point.

> Wasn't this a bug in some v21.x of Emacs that was fixed
> later?  Handa-san, did you try this in the CVS version of
> Emacs?

Oops, from some point, the mails between me and Fery don't
include bug-gnu-emacs@gnu.org in CC:.

I'll attach the last mail I sent to him.  It seems that the
problem is already fixed in HEAD.

---
Ken'ichi HANDA
handa@m17n.org

Date: Fri, 6 Jun 2003 14:22:07 +0900 (JST)
From: Kenichi Handa <handa@m17n.org>
To: engard.ferenc@innomed.hu
CC: handa@m17n.org
In-reply-to: <3EDF26E1.44AB5C4D@innomed.hu> (message from Fery on Thu, 05 Jun	2003 13:17:53 +0200)
Subject: Re: edited file is deleted when the file cannot be saved because of its  coding system

In article <3EDF26E1.44AB5C4D@innomed.hu>, Fery <engard.ferenc@innomed.hu> writes:
> I have played a bit more with this problem, and noticed
> that it saves a backup with a ~ on the end, so I have the
> original file! Sorry, I have missed this. So, if I have
> 'test', after ^X^S I will have 'test~' (it is moved,
> timestamp etc. is retained), and after quitting '#test#'
> (with internal encoding) and 'test~' with the original
> content.

I confirmed that hahaviour with 21.3 and CVS RC branch.
And I found that this problem is now fixed in HEAD branch.
In HEAD, at the point of Emacs asking you a
coding system, 'test' is surely moved to 'test~', but when
you type C-g, 'test~' is moved back to 'test'.

>>  In C locale, iso-latin-1 has higher priority than utf-8,
>> and all bytes in your file are regarded as valid for
>> iso-latin-1.  (The byte \225 (#x95) is also registered as
>> valid latin code in latin-extra-code-table).

> After all, emacs do not permit to save it, so from this
> point of view it is not a valid iso-latin-1 file for
> emacs. :-O

Sorry, what I wrote was wrong.  In 21.3 and RC, \225 is not
yet registered as a valid latin code, but has a bug in code
detection routine.  This bug is already fixed in the HEAD
branch.

---
Ken'ichi HANDA
handa@m17n.org