Don't block changes in mouse pointer inside 'track-mouse'

* etc/NEWS:
* doc/lispref/frames.texi (Mouse Tracking): Document the special
effect of setting 'track-mouse' to 'dragging'.

* lisp/textmodes/artist.el (artist-mouse-draw-continously):
* lisp/ruler-mode.el (ruler-mode-mouse-drag-any-column-iteration):
* lisp/mouse-drag.el (mouse-drag-throw):
* lisp/mouse.el (mouse-drag-line): Set 'track-mouse' to 'dragging'
to avoid changes in the shape of the mouse pointer.

* src/xdisp.c (define_frame_cursor1): Don't change the mouse
pointer shape when do_mouse_tracking has the value of 'dragging',
not just any non-nil value.  (Bug#20934)
(syms_of_xdisp): DEFSYM 'dragging'.

1 files changed, 9 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 1f8cbbc1b98..389de167fc6 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -815,6 +815,15 @@ This means that you can't use `make-local-variable' and expect them to
 
 ** `inhibit-point-motion-hooks' now defaults to t and is obsolete.
 
++++
+** `track-mouse' no longer freezes the shape of the mouse pointer.
+The `track-mouse' form no longer refrains from changing the shape of
+the mouse pointer for the entire time the body of that form is
+executed.  Lisp programs that use `track-mouse' for dragging across
+large portions of the Emacs display, and want to avoid changes in the
+pointer shape during dragging, should bind the variable `track-mouse'
+to the special value `dragging' in the body of the form.
+
 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
 has any effect.  (This change was made in Emacs 24.4 but was not
 advertised at the time.)