X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/f7ff1b0f0792f1f870778404531e68e77832c4a1..ed571ccb1d14abc788a29c3b3bbf08aa4b951ab8:/lisp/ffap.el

diff --git a/lisp/ffap.el b/lisp/ffap.el
index 97105ed422..52ffc9905e 100644
--- a/lisp/ffap.el
+++ b/lisp/ffap.el
@@ -1,6 +1,6 @@
 ;;; ffap.el --- find file (or url) at point
 
-;; Copyright (C) 1995-1997, 2000-2011  Free Software Foundation, Inc.
+;; Copyright (C) 1995-1997, 2000-2012  Free Software Foundation, Inc.
 
 ;; Author: Michelangelo Grigni <mic@mathcs.emory.edu>
 ;; Maintainer: FSF
@@ -523,7 +523,7 @@ The optional NOMODIFY argument suppresses the extra search."
   ;; (ffap-file-remote-p "/ffap.el:80")
   (or (and ffap-ftp-regexp
 	   (string-match ffap-ftp-regexp filename)
-	   ;; Convert "/host.com://dir" to "/host:/dir", to handle a dieing
+	   ;; Convert "/host.com://dir" to "/host:/dir", to handle a dying
 	   ;; practice of advertising ftp files as "host.dom://filename".
 	   (if (string-match "//" filename)
 	       ;; (replace-match "/" nil nil filename)
@@ -850,9 +850,24 @@ URL, or nil.  If nil, search the alist for further matches.")
   (and (not (string-match "\\.el\\'" name))
        (ffap-locate-file name '(".el") load-path)))
 
+;; FIXME this duplicates the logic of Man-header-file-path.
+;; There should be a single central variable or function for this.
+;; See also (bug#10702):
+;; cc-search-directories, semantic-c-dependency-system-include-path,
+;; semantic-gcc-setup
 (defvar ffap-c-path
-  ;; Need smarter defaults here!  Suggestions welcome.
-  '("/usr/include" "/usr/local/include"))
+  (let ((arch (with-temp-buffer
+                (when (eq 0 (ignore-errors
+                              (call-process "gcc" nil '(t nil) nil
+                                            "-print-multiarch")))
+                  (goto-char (point-min))
+                  (buffer-substring (point) (line-end-position)))))
+        (base '("/usr/include" "/usr/local/include")))
+    (if (zerop (length arch))
+        base
+      (append base (list (expand-file-name arch "/usr/include")))))
+  "List of directories to search for include files.")
+
 (defun ffap-c-mode (name)
   (ffap-locate-file name t ffap-c-path))
 
@@ -1457,7 +1472,7 @@ and the functions `ffap-file-at-point' and `ffap-url-at-point'."
 ;;; Menu support (`ffap-menu'):
 
 (defvar ffap-menu-regexp nil
-  "*If non-nil, overrides `ffap-next-regexp' during `ffap-menu'.
+  "If non-nil, overrides `ffap-next-regexp' during `ffap-menu'.
 Make this more restrictive for faster menu building.
 For example, try \":/\" for URL (and some ftp) references.")