emacs autosave file names

[Steven J. Zeil]

When running the CygWin port of emacs, I frequently see failures in
the auto-save mechanism.  

The problem occurs when editing a buffer whose name includes
characters that are acceptable in Unix file names but not in Windows
file names. For example, in replying to a message in VM, I may get
buffer named 'reply to "Doe, John"'. When the emacs
auto-save kicks in, it apparently chokes on the special
characters. The system locks for a few seconds and then I
will get a message:

   Auto-saving reply to "Doe, John": Opening output file: no such file or directory, /home/zeil/VMfolders/#reply to "Doe, John"#3892REN#

The problem only occurs when the save is to a Windows drive - if the
save is actually going to a Samba-mounted drive on a "real" Unix
system, then the auto-save will succeed.

Is there a way to filter/transform characters in auto-save file names?

SJZ


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