ediff: use user-error rather than debug-ignored-errors

* lisp/vc/ediff-diff.el (ediff-prepare-error-list):
* lisp/vc/ediff-help.el (ediff-help-for-quick-help):
* lisp/vc/ediff-init.el (ediff-barf-if-not-control-buffer)
(ediff-check-version):
* lisp/vc/ediff-merg.el (ediff-shrink-window-C):
* lisp/vc/ediff-mult.el (ediff-draw-dir-diffs, ediff-show-dir-diffs)
(ediff-append-custom-diff, ediff-meta-show-patch)
(ediff-filegroup-action, ediff-show-meta-buffer, ediff-show-registry)
(ediff-get-meta-info, ediff-patch-file-form-meta):
* lisp/vc/ediff-ptch.el (ediff-patch-file-internal):
* lisp/vc/ediff-util.el (ediff-toggle-autorefine)
(ediff--check-ancestor-exists, ediff-toggle-read-only)
(ediff-toggle-wide-display, ediff-toggle-multiframe)
(ediff-toggle-use-toolbar, ediff-toggle-show-clashes-only)
(ediff-next-difference, ediff-previous-difference)
(ediff-pop-diff, ediff-read-file-name, ediff-verify-file-buffer)
(ediff-save-buffer):
* lisp/vc/ediff-wind.el (ediff-make-wide-display):
* lisp/vc/ediff.el (ediff-find-file, ediff-buffers-internal)
(ediff-directories-internal, ediff-directory-revisions-internal)
(ediff-regions-wordwise, ediff-regions-linewise)
(ediff-load-version-control): Use user-error.
(debug-ignored-errors): No longer modify.

1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/vc/ediff-diff.el b/lisp/vc/ediff-diff.el
index ded82c41c9b..b957bdce4f7 100644
--- a/lisp/vc/ediff-diff.el
+++ b/lisp/vc/ediff-diff.el
@@ -340,7 +340,7 @@ one optional arguments, diff-number to refine.")
         (ediff-skip-unsuitable-frames)
         (switch-to-buffer error-buf)
         (ediff-kill-buffer-carefully ctl-buf)
-        (error "Errors in diff output.  Diff output is in %S" diff-buff))))
+        (user-error "Errors in diff output.  Diff output is in %S" diff-buff))))
 
 ;; BOUNDS specifies visibility bounds to use.
 ;; WORD-MODE tells whether we are in the word-mode or not.