Commit e46561a2 authored by Stefan Monnier's avatar Stefan Monnier

Ediff's overlay priorities cause more trouble than they solve.

* lisp/vc/ediff-init.el (ediff-shadow-overlay-priority): Remove variable.
(ediff-highest-priority): Remove function.
* lisp/vc/ediff-util.el (ediff-highlight-diff-in-one-buffer):
* lisp/vc/ediff-diff.el (ediff-set-diff-overlays-in-one-buffer)
(ediff-set-fine-diff-properties-in-one-buffer): Don't mess with
overlay priorities.

Fixes: debbugs:17234
parent 10ee3b3f
2014-04-10 Stefan Monnier <monnier@iro.umontreal.ca>
Ediff's overlay priorities cause more trouble than they solve.
* vc/ediff-init.el (ediff-shadow-overlay-priority): Remove variable.
(ediff-highest-priority): Remove function (bug#17234).
* vc/ediff-util.el (ediff-highlight-diff-in-one-buffer):
* vc/ediff-diff.el (ediff-set-diff-overlays-in-one-buffer)
(ediff-set-fine-diff-properties-in-one-buffer): Don't mess with
overlay priorities.
2014-04-10 Feng Li <fengli@gmail.com> (tiny change)
* progmodes/pascal.el (pascal-font-lock-keywords): Fix incorrect format
......
......@@ -587,7 +587,6 @@ one optional arguments, diff-number to refine.")
(setq pt-saved (ediff-with-current-buffer buff (point)))))
(setq overlay (ediff-make-bullet-proof-overlay begin end buff))
(ediff-overlay-put overlay 'priority ediff-shadow-overlay-priority)
(ediff-overlay-put overlay 'ediff-diff-num current-diff)
(if (and (ediff-has-face-support-p)
ediff-use-faces ediff-highlight-all-diffs)
......@@ -822,20 +821,9 @@ one optional arguments, diff-number to refine.")
'default
(ediff-get-symbol-from-alist
buf-type ediff-fine-diff-face-alist)
))
(priority (if default
0
(1+ (or (ediff-overlay-get
(symbol-value
(ediff-get-symbol-from-alist
buf-type
ediff-current-diff-overlay-alist))
'priority)
0)))))
(mapcar (lambda (overl)
(ediff-set-overlay-face overl face)
(ediff-overlay-put overl 'priority priority))
fine-diff-vector)))
)))
(dolist (overl fine-diff-vector)
(ediff-set-overlay-face overl face))))
;; Set overlays over the regions that denote delimiters
(defun ediff-set-fine-overlays-for-combined-merge (diff-list reg-num)
......
......@@ -707,9 +707,6 @@ shown in brighter colors."
;; List of difference overlays disturbed by working with the current diff.
(defvar ediff-disturbed-overlays nil "")
;; Priority of non-selected overlays.
(defvar ediff-shadow-overlay-priority 100 "")
(defcustom ediff-version-control-package 'vc
"Version control package used.
Currently, Ediff supports vc.el, rcs.el, pcl-cvs.el, and generic-sc.el. The
......@@ -1329,34 +1326,6 @@ this variable represents.")
(ediff-defvar-local ediff-current-diff-overlay-Ancestor nil
"Overlay for the current difference region in the ancestor buffer.")
;; Compute priority of a current ediff overlay.
(defun ediff-highest-priority (start end buffer)
(let ((pos (max 1 (1- start)))
ovr-list)
(if (featurep 'xemacs)
(1+ ediff-shadow-overlay-priority)
(ediff-with-current-buffer buffer
(while (< pos (min (point-max) (1+ end)))
(setq ovr-list (append (overlays-at pos) ovr-list))
(setq pos (next-overlay-change pos)))
(+ 1 ediff-shadow-overlay-priority
(apply 'max
(cons
1
(mapcar
(lambda (ovr)
(if (and ovr
;; exclude ediff overlays from priority
;; calculation, or else priority will keep
;; increasing
(null (ediff-overlay-get ovr 'ediff))
(null (ediff-overlay-get ovr 'ediff-diff-num)))
;; use the overlay priority or 0
(or (ediff-overlay-get ovr 'priority) 0)
0))
ovr-list))))))))
(defvar ediff-toggle-read-only-function 'toggle-read-only
"Function to be used to toggle read-only status of the buffer.
If nil, Ediff tries using the command bound to C-x C-q.")
......
......@@ -3023,8 +3023,6 @@ Hit \\[ediff-recenter] to reset the windows afterward."
(if (featurep 'xemacs)
(ediff-move-overlay current-diff-overlay begin end-hilit)
(ediff-move-overlay current-diff-overlay begin end-hilit buff))
(ediff-overlay-put current-diff-overlay 'priority
(ediff-highest-priority begin end-hilit buff))
(ediff-overlay-put current-diff-overlay 'ediff-diff-num n)
;; unhighlight the background overlay for diff n so it won't
......
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