Re: write-region bug ?

[Jean-Christophe Helary <jean.christophe.helary@traduction-libre.org>]

> On Jan 6, 2020, at 14:58, Jean-Christophe Helary <jean.christophe.helary@traduction-libre.org> wrote:
> 
> 
> 
>> On Jan 6, 2020, at 14:29, Eli Zaretskii <eliz@gnu.org> wrote:
>> 
>> This is explained at the very beginning of the "Files" node in the Emacs manual.  The Glossary also explains that under Saving and under Visiting. These are very basic notions in Emacs, so if the relations between a buffer visiting a file and what happens when you save that buffer aren't clear to you, I suggest a good reading of those parts in the manual.
> 
> I'm right there. Thank you.


File A.txt contains:
(write-region "stuff" nil "B.txt" nil t nil t)

File B.txt is empty until I run file A.txt.


The manual says:

25.4 Writing to Files

write-region

"If visit is t, then Emacs establishes an association between the buffer and the file: the buffer is then visiting that file."


25.1 Visiting Files

"Visiting a file means reading a file into a buffer. Once this is done, we say that the buffer is visiting that file, and call the file the visited file of the buffer."


→ My understanding from the above manual quotes is that file B.txt is read into the buffer where file A.txt is.

I don't know how that should look like, but what I see is seemingly the opposite: full contents of file A.txt is written to file B.txt.

There is obviously something that I am missing in the documentation.

Jean-Christophe