bug#23585: 25.0.93; Win32: spurious ^M pop up at byte offset 65536

[Eli Zaretskii]

> Date: Fri, 20 May 2016 12:16:51 +0200
> From: Anders Lindgren <andlind@gmail.com>
> 
> I've noticed that sometimes an extra carriage return character pops up in my 
> source files, when running
> Emacs under Windows. They are always located at the end of a line. I use 
> auto-revert mode and I've only
> seen this in files already open in Emacs.
> 
> Today I noticed that one such carriage return character was placed at buffer 
> position 62879 in line 2658. This
> corresponds to byte position 65536 (or hex 0x10000) in the file. Clearly, 
> this can't be a coincidence.
> 
> By the way, I'm not sure Emacs is the culprit here -- I use subversion as a 
> version control system and Visual
> Studio for debugging and sometimes minor edits.

If you can come up with a reproducible recipe, we could debug this.

Thanks.