From 123437b4c199fcd6fd2c7cd9489da721ebf1864d Mon Sep 17 00:00:00 2001
From: Glenn Morris <rgm@gnu.org>
Date: Wed, 8 Aug 2007 08:00:43 +0000
Subject: [PATCH] (help-make-xrefs): Search for symbol constituents, rather
 than just `-'.

---
 lisp/help-mode.el | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lisp/help-mode.el b/lisp/help-mode.el
index 28ac693f870..fd17a93a29f 100644
--- a/lisp/help-mode.el
+++ b/lisp/help-mode.el
@@ -461,9 +461,9 @@ that."
               ;; An obvious case of a key substitution:
               (save-excursion
                 (while (re-search-forward
-			;; Assume command name is only word characters
-			;; and dashes to get things like `use M-x foo.'.
-                        "\\<M-x\\s-+\\(\\sw\\(\\sw\\|-\\)+\\)" nil t)
+			;; Assume command name is only word and symbol
+                        ;; characters to get things like `use M-x foo->bar'.
+                        "\\<M-x\\s-+\\(\\sw\\(\\sw\\|\\s_\\)+\\)" nil t)
                   (let ((sym (intern-soft (match-string 1))))
                     (if (fboundp sym)
                         (help-xref-button 1 'help-function sym)))))
@@ -489,7 +489,7 @@ that."
 		      (end-of-line)
 		      (skip-chars-backward "^ \t\n")
 		      (if (and (>= (current-column) col)
-			       (looking-at "\\(\\sw\\|-\\)+$"))
+			       (looking-at "\\(\\sw\\|\\s_\\)+$"))
 			  (let ((sym (intern-soft (match-string 0))))
 			    (if (fboundp sym)
 				(help-xref-button 0 'help-function sym))))
-- 
2.39.2