Improve a recent change in 'mule-cmds.el'

* lisp/international/mule-cmds.el
(select-safe-coding-system--format-list): Display codepoints in
hex and as characters.  Display the ellipsis in a better place.
Enlarge the limit to 5 codepoints, as the display is now easier to
grasp.
(select-safe-coding-system-interactively): Don't use
'select-safe-coding-system--format-list' for "rejected"
coding-systems, as those don't come with characters and positions.

diff --git a/lisp/international/mule-cmds.el b/lisp/international/mule-cmds.el
index a883c231cbd93295cfe06e873a7b2e9125fdef3d..abccc4f72c0b0505bce0bf04069fe763e6f70683 100644 (file)
--- a/lisp/international/mule-cmds.el
+++ b/lisp/international/mule-cmds.el
@@ -663,19 +663,23 @@ overrides that argument.")
       codings))
 
 (defun select-safe-coding-system--format-list (list)
-  (let ((spec "  %-20s %6s %10s %s\n"))
-    (insert (format spec "Coding System" "Pos" "Code Point" ""))
+  (let ((spec1 "  %-20s %6s  %-10s %s\n")
+        (spec2 "  %-20s %6s  #x%-8X %c\n")
+        (nmax 5))
+    (insert (format spec1 "Coding System" "Pos" "Codepoint" "Char"))
     (cl-loop for (coding . pairs) in list
              do (cl-loop for pair in pairs
-                         ;; If there's a lot, only do the first three.
-                         for i from 1 upto 3
+                         ;; If there's a lot, only do the first five.
+                         for i from 1 upto nmax
                          do (insert
-                             (format spec
+                             (format spec2
                                      (if (= i 1) coding "")
-                                     (car pair) (cdr pair)
-                                     (if (and (= i 3) (> (length pairs) 3))
-                                         "..."
-                                       ""))))))
+                                     (car pair)
+                                     (cdr pair)
+                                     (cdr pair))))
+             (if (> (length pairs) nmax)
+                 (insert (format spec1 "" "..." "" "")))))
+
   (insert "\n"))
 
 (defun select-safe-coding-system-interactively (from to codings unsafe
@@ -736,14 +740,18 @@ DEFAULT is the coding system to use by default in the query."
                 (concat " \"" (if (> (length from) 10)
                                   (concat (substring from 0 10) "...\"")
                                 (concat from "\"")))
-              (format-message " text\nin the buffer `%s'" bufname))
+              (format-message
+                " the following\nproblematic characters in the buffer `%s'"
+                bufname))
             ":\n")
             (select-safe-coding-system--format-list unsafe)
            (when rejected
              (insert "These safely encode the text in the buffer,
 but are not recommended for encoding text in this context,
 e.g., for sending an email message.\n ")
-              (select-safe-coding-system--format-list rejected))
+              (dolist (x rejected)
+                (princ " ") (princ x))
+              (insert "\n"))
            (when unsafe
              (insert (if rejected "The other coding systems"
                        "However, each of them")