(cpp-make-button): Add help-echo to mouse-highlighted text.

diff --git a/lisp/progmodes/cpp.el b/lisp/progmodes/cpp.el
index 6cdaec2fb57e5825158f812a5294bc88e3b2d0e0..590795a5540122500f9f86c106c700576cbcfee2 100644 (file)
--- a/lisp/progmodes/cpp.el
+++ b/lisp/progmodes/cpp.el
@@ -776,6 +776,7 @@ BRANCH should be either nil (false branch), t (true branch) or 'both."
     (add-text-properties from to
                         (append (list 'face face)
                                 '(mouse-face highlight)
+                                '(help-echo "mouse-2: change/use this item")
                                 (list 'cpp-callback callback)
                                 (if data (list 'cpp-data data))))))