Add new error and function `user-error'.

* lisp/subr.el (user-error): New function.
* lisp/window.el (switch-to-buffer):
* lisp/vc/smerge-mode.el (smerge-resolve-function, smerge-resolve)
(smerge-match-conflict):
* lisp/simple.el (previous-matching-history-element)
(next-matching-history-element, goto-history-element, undo-more)
(undo-start):
* lisp/progmodes/etags.el (visit-tags-table-buffer, find-tag-tag)
(find-tag-noselect, find-tag-in-order, etags-goto-tag-location)
(next-file, tags-loop-scan, list-tags, complete-tag):
* lisp/progmodes/compile.el (compilation-loop):
* lisp/mouse.el (mouse-minibuffer-check):
* lisp/man.el (Man-bgproc-sentinel, Man-goto-page):
* lisp/info.el (Info-find-node-2, Info-extract-pointer, Info-history-back)
(Info-history-forward, Info-follow-reference, Info-menu)
(Info-extract-menu-item, Info-extract-menu-counting)
(Info-forward-node, Info-backward-node, Info-next-menu-item)
(Info-last-menu-item, Info-next-preorder, Info-last-preorder)
(Info-next-reference, Info-prev-reference, Info-index)
(Info-index-next, Info-follow-nearest-node)
(Info-copy-current-node-name):
* lisp/imenu.el (imenu--make-index-alist)
(imenu-default-create-index-function, imenu-add-to-menubar):
* lisp/files.el (basic-save-buffer, recover-file):
* lisp/emacs-lisp/easy-mmode.el (easy-mmode-define-navigation):
* lisp/emacs-lisp/checkdoc.el (checkdoc-continue, checkdoc-comments)
(checkdoc-message-text, checkdoc-defun):
* lisp/dabbrev.el (dabbrev-completion, dabbrev--abbrev-at-point):
* lisp/cus-edit.el (customize-changed-options, customize-rogue)
(customize-saved, custom-variable-set, custom-variable-mark-to-save)
(custom-variable-mark-to-reset-standard)
(custom-variable-reset-backup, custom-face-mark-to-reset-standard)
(custom-file):
* lisp/completion.el (check-completion-length):
* lisp/comint.el (comint-search-arg)
(comint-previous-matching-input-string-position)
(comint-previous-matching-input)
(comint-replace-by-expanded-history-before-point, comint-send-input)
(comint-copy-old-input, comint-backward-matching-input)
(comint-goto-process-mark, comint-set-process-mark):
* lisp/calendar/calendar.el (calendar-cursor-to-date): Use it.
* lisp/bindings.el (debug-ignored-errors): Remove regexps, add `user-error'.
* src/data.c (PUT_ERROR): New macro.
(syms_of_data): Use it.  Add new error type `user-error'.
* src/undo.c (user_error): New function.
(Fprimitive_undo): Use it.
* src/print.c (print_error_message): Adjust print style for `user-error'.
* src/keyboard.c (user_error): New function.
(Fexit_recursive_edit, Fabort_recursive_edit): Use it.

1 files changed, 6 insertions, 11 deletions

diff --git a/lisp/dabbrev.el b/lisp/dabbrev.el
index c169e07ac30..87a03fd24da 100644
--- a/lisp/dabbrev.el
+++ b/lisp/dabbrev.el
@@ -406,10 +406,10 @@ then it searches *all* buffers."
                          (dabbrev--find-all-expansions abbrev ignore-case-p))
                         (completion-ignore-case ignore-case-p))
                     (or (consp completion-list)
-                        (error "No dynamic expansion for \"%s\" found%s"
-                               abbrev
-                               (if dabbrev--check-other-buffers
-                                   "" " in this-buffer")))
+                        (user-error "No dynamic expansion for \"%s\" found%s"
+                                    abbrev
+                                    (if dabbrev--check-other-buffers
+                                        "" " in this-buffer")))
                     (setq list
                           (cond
                            ((not (and ignore-case-p dabbrev-case-replace))
@@ -585,7 +585,7 @@ all skip characters."
   "Extract the symbol at point to serve as abbreviation."
   ;; Check for error
   (if (bobp)
-      (error "No possible abbreviation preceding point"))
+      (user-error "No possible abbreviation preceding point"))
   ;; Return abbrev at point
   (save-excursion
     ;; Record the end of the abbreviation.
@@ -603,7 +603,7 @@ all skip characters."
 				      "\\sw\\|\\s_")
 				  nil t)
 	      (forward-char 1)
-	    (error "No possible abbreviation preceding point"))))
+	    (user-error "No possible abbreviation preceding point"))))
     ;; Now find the beginning of that one.
     (dabbrev--goto-start-of-abbrev)
     (buffer-substring-no-properties
@@ -974,11 +974,6 @@ Leaves point at the location of the start of the expansion."
 		(cons found-string dabbrev--last-table))
 	  result)))))
 
-(dolist (mess '("^No dynamic expansion for .* found"
-		"^No further dynamic expansion for .* found$"
-		"^No possible abbreviation preceding point$"))
-  (add-to-list 'debug-ignored-errors mess))
-
 (provide 'dabbrev)
 
 ;;; dabbrev.el ends here