Re: revert-buffer-with-coding-system fails to work for CP1250

[Peter Dyballa]

Am 06.11.2006 um 12:51 schrieb Kenichi Handa:

> In article <address@hidden>, Peter  
> Dyballa <address@hidden> writes:
>
> > The problems with CP1250 and CP1251 are solved with this patch. No
> > other failure could be found, except that there is just one
> > difference, with and without the patch: a thai-tis620 encoded buffer
> > (without NO BREAK SPACE) shows Thai glyphs, but when the same
> > contents is reverted to iso-8859-11 (which is thai-tis620 with NO
> > BREAK SPACE) only empty boxes are shown.
>
> Again, as I can't reproduce this, please send me the exact
> file (it is usually a good idea to post the exact file to
> reproduce a bug).
>
> By the way, the current implementation of thai-tis620 allows
> all bytes in 0xA1..0x7E, but iso-8859-11 allows
> 0xA0..0xDA,0xDF..0xFB.  Some of emply boxes shown in
> thai-tis620 are shown in octal form when reverted to
> iso-8859-11.  This is not a good behavior.  But as fixing it
> is not trivial and it is anyway not that serious problem,
> I'd like to leave it as is.  It is fixed in emacs-unicode-2.

I can see this in both GNU Emacsen 22.0.50 and 22.0.90. When it comes  
to loading in TIS620 encoding the TIS620 encoded file these lines are  
written into *Messages* buffer:

        Loading view...done
        Loading thai-util...
        Loading mule-util...done
        Loading thai-util...done
        Loading tex-mode...done

In the case of the ISO 8859-11 encoded only this line is added into  
*Messages* buffer:

        Loading view...done

I launch both Emacsen with -Q. Then: C-x d <my tests dir> RET. Some  
cursor movements to position the cursor on the file. Then: C-x RET c  
tis620 RET v, or C-x RET c iso-8859-11 RET v.

These are my proper encoding files. The test files were generated by  
removing the first lines in vi(m) and saving under the same name in a  
"puristic" directory inside my test cases directory:

ISO 8859-10.txt
Description: Text document

thai-tis620.txt
Description: Text document

--
Greetings

  Pete

 "A designer knows he has arrived at perfection not when there is no  
longer anything to add, but when there is no longer anything to take  
away."
                                 -- Antoine de Saint-Exupéry