Re: 23.0.60; show-paren-mode causes abnormal vertical lines on Win32.

[Jason Rumney]

yu jie wrote:
> Yes, the bug is only in the old font backend.

I followed your recipe on Emacs 22, and found it was not restricted to
the trunk though.

This problem seems to be related to other Cleartype bugs. Andrew Ng sent
a full patch for these some time ago, but I don't know if his paperwork
has arrived yet. But for this specific problem, I have come up with a
much smaller fix in the meantime. It also appears to fix the overlay
problem reported by Drew Adams 18 months ago.