🚀 go-pugleaf

I'm running Emacs 19.23.93 (pretest) under HP-UX 9.03 configured as
follows:

	hppa1.1-hp-hpux
		--run-in-place
		--srcdir=/s/users/franl/src/gnu/emacs-19.25.93
		--x-includes=/usr/include/X11R5
		--x-libraries=/usr/lib/X11R5

I have applied the patch to record_asynch_buffer_change(), but no
newer patches.

Apologies for such a vague report, but the symptoms seem to have
started with 19.25.93, and I wanted someone to suggest how I can debug
this.  I know how to use the elisp debugger, but I am not very
familiar with overlays and faces (which may be related to this bug).

I'm seeing my mouse spontaneously change into a cross-hair (same as in
dired mode when you're positioned over a filename) and a random
section of the buffer changes color (just like the filenames in dired)
but reverts to the normal color when the mouse is moved away from it!
Typically two such "color zones" appear at once (with no intervening
text but with nothing special about the boundary point (it's not a
mark location)), leaving a part of the buffer (usually the topmost
part) unaffected.  When the mouse is positioned over the unaffected
part of the buffer, the pointer changes back to the normal I-bar.  The
only way to get rid of the effect is to delete the buffer or the
affected text "zones".

This has happened to me in the *scratch* and *mail* composition
buffers, so it is likely independent of the major mode.  When it
happens I am simply typing text.

Any suggestions about how I can debug this are welcome.
--
Fran Litterio                   franl@centerline.com (617-498-3255)
CenterLine Software             http://draco.centerline.com:8080/~franl/
Cambridge, MA, USA 02138-1110   PGP public key id: 1270EA1D