From: Glenn Morris <rgm@gnu.org>
Date: Fri, 11 Sep 2009 03:39:48 +0000 (+0000)
Subject: (help-function-cmacro): New button.
X-Git-Tag: emacs-pretest-23.1.90~1403
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=57c8e7b456f9cff91ec37261e2a73cf9f04388a8;p=emacs.git

(help-function-cmacro): New button.
---

diff --git a/lisp/help-mode.el b/lisp/help-mode.el
index 91fb4f99257..7c032b81cf2 100644
--- a/lisp/help-mode.el
+++ b/lisp/help-mode.el
@@ -202,6 +202,22 @@ The format is (FUNCTION ARGS...).")
 		       (message "Unable to find location in file"))))
   'help-echo (purecopy "mouse-2, RET: find function's definition"))
 
+(define-button-type 'help-function-cmacro
+  :supertype 'help-xref
+  'help-function (lambda (fun file)
+		   (setq file (locate-library file t))
+		   (if (and file (file-readable-p file))
+		       (progn
+			 (pop-to-buffer (find-file-noselect file))
+			 (goto-char (point-min))
+			 (if (re-search-forward
+			      (format "^[ \t]*(define-compiler-macro[ \t]+%s"
+				      (regexp-quote (symbol-name fun))) nil t)
+			     (forward-line 0)
+			   (message "Unable to find location in file")))
+		     (message "Unable to find file")))
+  'help-echo (purecopy "mouse-2, RET: find function's compiler macro"))
+
 (define-button-type 'help-variable-def
   :supertype 'help-xref
   'help-function (lambda (var &optional file)