More-conservative ‘format’ quote restyling

Instead of restyling curved quotes for every call to ‘format’,
create a new function ‘format-message’ that does the restyling,
and using the new function instead of ‘format’ only in contexts
where this seems appropriate.
Problem reported by Dmitry Gutov and Andreas Schwab in:
http://lists.gnu.org/archive/html/emacs-devel/2015-08/msg00826.html
http://lists.gnu.org/archive/html/emacs-devel/2015-08/msg00827.html
* doc/lispref/commands.texi (Using Interactive):
* doc/lispref/control.texi (Signaling Errors, Signaling Errors):
* doc/lispref/display.texi (Displaying Messages, Progress):
* doc/lispref/elisp.texi:
* doc/lispref/help.texi (Keys in Documentation):
* doc/lispref/minibuf.texi (Minibuffer Misc):
* doc/lispref/strings.texi (Formatting Strings):
* etc/NEWS:
Document the changes.
* lisp/abbrev.el (expand-region-abbrevs):
* lisp/apropos.el (apropos-library):
* lisp/calc/calc-ext.el (calc-record-message)
(calc-user-function-list):
* lisp/calc/calc-help.el (calc-describe-key, calc-full-help):
* lisp/calc/calc-lang.el (math-read-big-balance):
* lisp/calc/calc-store.el (calc-edit-variable):
* lisp/calc/calc-units.el (math-build-units-table-buffer):
* lisp/calc/calc-yank.el (calc-edit-mode):
* lisp/calendar/icalendar.el (icalendar-export-region)
(icalendar--add-diary-entry):
* lisp/cedet/mode-local.el (mode-local-print-binding)
(mode-local-describe-bindings-2):
* lisp/cedet/semantic/complete.el (semantic-completion-message):
* lisp/cedet/semantic/edit.el (semantic-parse-changes-failed):
* lisp/cedet/semantic/wisent/comp.el (wisent-log):
* lisp/cedet/srecode/insert.el (srecode-insert-show-error-report):
* lisp/descr-text.el (describe-text-properties-1, describe-char):
* lisp/dframe.el (dframe-message):
* lisp/dired-aux.el (dired-query):
* lisp/emacs-lisp/byte-opt.el (byte-compile-log-lap-1):
* lisp/emacs-lisp/bytecomp.el (byte-compile-log)
(byte-compile-log-file, byte-compile-warn, byte-compile-form):
* lisp/emacs-lisp/cconv.el (cconv-convert, cconv--analyze-use)
(cconv-analyze-form):
* lisp/emacs-lisp/check-declare.el (check-declare-warn):
* lisp/emacs-lisp/checkdoc.el (checkdoc-this-string-valid-engine):
* lisp/emacs-lisp/cl-macs.el (cl-symbol-macrolet):
* lisp/emacs-lisp/edebug.el (edebug-format):
* lisp/emacs-lisp/eieio-core.el (eieio-oref):
* lisp/emacs-lisp/eldoc.el (eldoc-minibuffer-message)
(eldoc-message):
* lisp/emacs-lisp/elint.el (elint-file, elint-log):
* lisp/emacs-lisp/find-func.el (find-function-library):
* lisp/emacs-lisp/macroexp.el (macroexp--obsolete-warning):
* lisp/emacs-lisp/map-ynp.el (map-y-or-n-p):
* lisp/emacs-lisp/nadvice.el (advice--make-docstring):
* lisp/emacs-lisp/package.el (package-compute-transaction)
(package-install-button-action, package-delete-button-action)
(package-menu--list-to-prompt):
* lisp/emacs-lisp/timer.el (timer-event-handler):
* lisp/emacs-lisp/warnings.el (lwarn, warn):
* lisp/emulation/viper-cmd.el:
(viper-toggle-parse-sexp-ignore-comments)
(viper-kill-buffer, viper-brac-function):
* lisp/emulation/viper-macs.el (viper-record-kbd-macro):
* lisp/facemenu.el (facemenu-add-new-face):
* lisp/faces.el (face-documentation, read-face-name)
(face-read-string, read-face-font, describe-face):
* lisp/files.el (find-alternate-file, hack-local-variables)
(hack-one-local-variable--obsolete, write-file)
(basic-save-buffer, delete-directory):
* lisp/format.el (format-write-file, format-find-file)
(format-insert-file):
* lisp/help-fns.el (help-fns--key-bindings)
(help-fns--compiler-macro, help-fns--obsolete)
(help-fns--interactive-only, describe-function-1)
(describe-variable):
* lisp/help.el (describe-mode):
* lisp/info-xref.el (info-xref-output):
* lisp/info.el (Info-virtual-index-find-node)
(Info-virtual-index, info-apropos):
* lisp/international/kkc.el (kkc-error):
* lisp/international/mule-cmds.el:
(select-safe-coding-system-interactively)
(select-safe-coding-system, describe-input-method):
* lisp/international/mule-conf.el (code-offset):
* lisp/international/mule-diag.el (describe-character-set)
(list-input-methods-1):
* lisp/international/quail.el (quail-error):
* lisp/minibuffer.el (minibuffer-message):
* lisp/mpc.el (mpc--debug):
* lisp/msb.el (msb--choose-menu):
* lisp/net/ange-ftp.el (ange-ftp-message):
* lisp/net/gnutls.el (gnutls-message-maybe):
* lisp/net/newst-backend.el (newsticker--sentinel-work):
* lisp/net/newst-treeview.el (newsticker--treeview-load):
* lisp/net/nsm.el (nsm-query-user):
* lisp/net/rlogin.el (rlogin):
* lisp/net/soap-client.el (soap-warning):
* lisp/net/tramp.el (tramp-debug-message):
* lisp/nxml/nxml-outln.el (nxml-report-outline-error):
* lisp/nxml/nxml-parse.el (nxml-parse-error):
* lisp/nxml/rng-cmpct.el (rng-c-error):
* lisp/nxml/rng-match.el (rng-compile-error):
* lisp/nxml/rng-uri.el (rng-uri-error):
* lisp/obsolete/iswitchb.el (iswitchb-possible-new-buffer):
* lisp/org/org-ctags.el:
(org-ctags-ask-rebuild-tags-file-then-find-tag):
* lisp/proced.el (proced-log):
* lisp/progmodes/ebnf2ps.el (ebnf-log):
* lisp/progmodes/flymake.el (flymake-log):
* lisp/progmodes/vhdl-mode.el (vhdl-warning-when-idle):
* lisp/replace.el (occur-1):
* lisp/simple.el (execute-extended-command)
(undo-outer-limit-truncate, define-alternatives):
* lisp/startup.el (command-line):
* lisp/subr.el (error, user-error, add-to-list):
* lisp/tutorial.el (tutorial--describe-nonstandard-key)
(tutorial--find-changed-keys):
* src/callint.c (Fcall_interactively):
* src/editfns.c (Fmessage, Fmessage_box):
Restyle the quotes of format strings intended for use as a
diagnostic, when restyling seems appropriate.
* lisp/subr.el (format-message): New function.
* src/doc.c (Finternal__text_restyle): New function.
(syms_of_doc): Define it.

lisp/emacs-lisp/bytecomp.el

@@ -973,7 +973,7 @@ Each function's symbol gets added to `byte-compile-noruntime-functions'."
 	  (print-level 4)
 	  (print-length 4))
       (byte-compile-log-1
-       (format
+       (format-message
 	,format-string
 	,@(mapcar
 	   (lambda (x) (if (symbolp x) (list 'prin1-to-string x) x))
@@ -1120,7 +1120,8 @@ Each function's symbol gets added to `byte-compile-noruntime-functions'."
 		pt)
 	   (when dir
 	     (unless was-same
-	       (insert (format "Leaving directory ‘%s’\n" default-directory))))
+	       (insert (format-message "Leaving directory ‘%s’\n"
+                                       default-directory))))
 	   (unless (bolp)
 	     (insert "\n"))
 	   (setq pt (point-marker))
@@ -1135,8 +1136,8 @@ Each function's symbol gets added to `byte-compile-noruntime-functions'."
 	   (when dir
 	     (setq default-directory dir)
 	     (unless was-same
-	       (insert (format "Entering directory ‘%s’\n"
-                               default-directory))))
+	       (insert (format-message "Entering directory ‘%s’\n"
+                                       default-directory))))
 	   (setq byte-compile-last-logged-file byte-compile-current-file
 		 byte-compile-last-warned-form nil)
 	   ;; Do this after setting default-directory.
@@ -1154,7 +1155,7 @@ Each function's symbol gets added to `byte-compile-noruntime-functions'."
 
 (defun byte-compile-warn (format &rest args)
   "Issue a byte compiler warning; use (format FORMAT ARGS...) for message."
-  (setq format (apply 'format format args))
+  (setq format (apply #'format-message format args))
   (if byte-compile-error-on-warn
       (error "%s" format)		; byte-compile-file catches and logs it
     (byte-compile-log-warning format t :warning)))
@@ -2979,7 +2980,7 @@ for symbols generated by the byte compiler itself."
             (`(',var . ,_)
              (when (assq var byte-compile-lexical-variables)
                (byte-compile-log-warning
-                (format "%s cannot use lexical var ‘%s’" fn var)
+                (format-message "%s cannot use lexical var ‘%s’" fn var)
                 nil :error)))))
         (when (macroexp--const-symbol-p fn)
           (byte-compile-warn "‘%s’ called as a function" fn))
@@ -2991,8 +2992,8 @@ for symbols generated by the byte compiler itself."
 				    (format "; %s" interactive-only))
 				   ((and (symbolp 'interactive-only)
 					 (not (eq interactive-only t)))
-				    (format "; use ‘%s’ instead."
-					    interactive-only))
+				    (format-message "; use ‘%s’ instead."
+                                                    interactive-only))
 				   (t "."))))
         (if (eq (car-safe (symbol-function (car form))) 'macro)
             (byte-compile-log-warning