Improve documentation of "C-u C-x ="

* doc/emacs/mule.texi (International Chars): Mention the
composition information displayed by "C-u C-x =".  (Bug#42256)

diff --git a/doc/emacs/mule.texi b/doc/emacs/mule.texi
index 373c7b5581706e7650b0bb0e32b25271b82c3b99..0f07d286cda484981b9ddff93f3f25654d2a8077 100644 (file)
--- a/doc/emacs/mule.texi
+++ b/doc/emacs/mule.texi
@@ -192,13 +192,19 @@ What keys to type to input the character in the current input method
 
 @item
 The character's encodings, both internally in the buffer, and externally
-if you were to save the file.
+if you were to save the buffer to a file.
 
 @item
 If you are running Emacs on a graphical display, the font name and
 glyph code for the character.  If you are running Emacs on a text
 terminal, the code(s) sent to the terminal.
 
+@item
+If the character was composed on display with any following characters
+to form one or more grapheme clusters, the composition information:
+the font glyphs if the frame is on a graphical display, else the
+characters that were composed.
+
 @item
 The character's text properties (@pxref{Text Properties,,,
 elisp, the Emacs Lisp Reference Manual}), including any non-default