bug#11303: Whitespace mode causes auto-save to malfunction

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> The OP's recipe includes C-g, which could mean we lack an
> unwind-protect somewhere, and the buffer stays modified due to changes
> in faces.

The C-g isn't necessary to reproduce the issue.

> The fact that changes in faces cause the buffer become eligible for
> auto-saving is not a bug, IMO, it's a feature.

It's pretty annoying when using whitespace-mode -- which changes the
text properties all the time when you move around in the buffer (without
modifying the buffer).  It's not really that much of an issue elsewhere,
where font lock changes usually only happen when you actually edit the
buffer.

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