Use format-prompt for many more prompts

* lisp/bookmark.el (bookmark-completing-read):
* lisp/calc/calc-prog.el (calc-user-define-formula):
* lisp/calc/calc-store.el (calc-permanent-variable):
* lisp/calc/calc-units.el (calc-convert-units)
(calc-convert-exact-units, calc-convert-temperature):
* lisp/cedet/semantic/complete.el
(semantic-complete-read-tag-engine):
* lisp/cus-edit.el (customize-read-group):
* lisp/dired-aux.el (dired-do-chxxx):
* lisp/dired-x.el (dired-mark-unmarked-files):
* lisp/emacs-lisp/debug.el (cancel-debug-on-entry)
(cancel-debug-on-variable-change):
* lisp/emacs-lisp/edebug.el (edebug-cancel-on-entry)
(edebug-remove-instrumentation):
* lisp/epa.el (epa-read-file-name, epa-export-keys):
* lisp/faces.el (read-face-name):
* lisp/format.el (format-decode-buffer, format-decode-region):
* lisp/gnus/gnus-art.el (gnus-read-save-file-name):
* lisp/gnus/gnus-util.el (gnus-completing-read):
* lisp/gnus/message.el (message-check-news-header-syntax):
* lisp/info.el (Info-follow-reference):
* lisp/international/mule-diag.el (describe-font)
(describe-fontset):
* lisp/international/quail.el (quail-show-keyboard-layout):
* lisp/language/cyril-util.el
(standard-display-cyrillic-translit):
* lisp/mail/rmailkwd.el (rmail-read-label):
* lisp/mail/rmailmm.el (rmail-mime-save):
* lisp/mail/rmailout.el (rmail-output-read-file-name):
* lisp/man.el (Man-goto-section, Man-follow-manual-reference):
* lisp/menu-bar.el (emacs-index--prompt):
* lisp/net/ange-ftp.el (ange-ftp-get-passwd):
* lisp/proced.el (proced-send-signal):
* lisp/progmodes/cpp.el (cpp-choose-face):
* lisp/progmodes/ebrowse.el (ebrowse-set-tree-indentation):
* lisp/progmodes/etags.el (visit-tags-table)
(visit-tags-table-buffer):
* lisp/progmodes/grep.el (grep-read-files):
* lisp/progmodes/hideif.el (hide-ifdef-define):
* lisp/progmodes/pascal.el (pascal-goto-defun):
* lisp/progmodes/prolog.el (prolog-read-predicate):
* lisp/progmodes/sql.el (sql-get-login-ext):
* lisp/ses.el (ses-define-local-printer):
* lisp/textmodes/artist.el (artist-figlet-choose-font):
* lisp/textmodes/tex-mode.el (tex-compile):
* lisp/vc/diff.el (diff):
* lisp/vc/ediff-ptch.el (ediff-prompt-for-patch-file):
* lisp/vc/ediff-util.el (ediff-read-file-name):
* lisp/vc/pcvs.el (cvs-mode-mark-on-state):
* lisp/vc/vc.el (vc-diff-build-argument-list-internal)
(vc-revision-other-window, vc-retrieve-tag):
* lisp/wid-edit.el: Prefer format-prompt unconditionally.

* lisp/org/org-capture.el (org-capture-fill-template):
* lisp/org/org-refile.el (org-refile-get-location):
* lisp/progmodes/python.el (python-eldoc-at-point):
* lisp/progmodes/verilog-mode.el (verilog-surelint-off)
(verilog-goto-defun):
* lisp/progmodes/xref.el (xref--read-identifier): Prefer format-prompt
when it is fboundp.

lisp/cus-edit.el

@@ -1133,7 +1133,7 @@ for the MODE to customize."
 
 (defun customize-read-group ()
   (let ((completion-ignore-case t))
-    (completing-read "Customize group (default emacs): "
+    (completing-read (format-prompt "Customize group" "emacs")
                      obarray
                      (lambda (symbol)
                        (or (and (get symbol 'custom-loads)