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bug#9779: No usable browser found on Lubuntu


From: Juri Linkov
Subject: bug#9779: No usable browser found on Lubuntu
Date: Tue, 18 Oct 2011 02:14:39 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.90 (x86_64-pc-linux-gnu)

Clicking on a link doesn't open a Web browser as expected
but fails with the error message "No usable browser found"
on Lubuntu 11.10 (Ubuntu + LXDE) since its default web browser
is Chromium, but Chromium is still not supported by browse-url.

The following patch will add its support to browse-url.el.  This code
is basically like used for Firefox, but since there are no official
command line switches like "-remote", "-new-window", "-new-tab",
so tab/window/startup related options can't be used for Chromium.

=== modified file 'lisp/net/browse-url.el'
--- lisp/net/browse-url.el      2011-08-21 01:01:12 +0000
+++ lisp/net/browse-url.el      2011-10-17 23:10:30 +0000
@@ -36,6 +36,7 @@
 ;; Function                           Browser     Earliest version
 ;; browse-url-mozilla                 Mozilla     Don't know
 ;; browse-url-firefox                 Firefox     Don't know (tried with 1.0.1)
+;; browse-url-chromium                Chromium    3.0
 ;; browse-url-galeon                  Galeon      Don't know
 ;; browse-url-epiphany                Epiphany    Don't know
 ;; browse-url-netscape                Netscape    1.1b1
@@ -230,6 +232,7 @@ (defcustom browse-url-browser-function
                         :value  browse-url-w3-gnudoit)
          (function-item :tag "Mozilla" :value  browse-url-mozilla)
          (function-item :tag "Firefox" :value browse-url-firefox)
+         (function-item :tag "Chromium" :value browse-url-chromium)
          (function-item :tag "Galeon" :value  browse-url-galeon)
          (function-item :tag "Epiphany" :value  browse-url-epiphany)
          (function-item :tag "Netscape" :value  browse-url-netscape)
@@ -336,6 +340,22 @@ (defcustom browse-url-firefox-startup-ar
   :type '(repeat (string :tag "Argument"))
   :group 'browse-url)
 
+(defcustom browse-url-chromium-program
+  (let ((candidates '("chromium" "chromium-browser" "chrome")))
+    (while (and candidates (not (executable-find (car candidates))))
+      (setq candidates (cdr candidates)))
+    (or (car candidates) "chromium"))
+  "The name by which to invoke Chromium."
+  :type 'string
+  :version "24.1"
+  :group 'browse-url)
+
+(defcustom browse-url-chromium-arguments nil
+  "A list of strings to pass to Chromium as arguments."
+  :type '(repeat (string :tag "Argument"))
+  :version "24.1"
+  :group 'browse-url)
+
 (defcustom browse-url-galeon-program "galeon"
   "The name by which to invoke Galeon."
   :type 'string
@@ -913,6 +933,7 @@ (defun browse-url-default-browser (url &
     ((executable-find browse-url-gnome-moz-program) 'browse-url-gnome-moz)
     ((executable-find browse-url-mozilla-program) 'browse-url-mozilla)
     ((executable-find browse-url-firefox-program) 'browse-url-firefox)
+    ((executable-find browse-url-chromium-program) 'browse-url-chromium)
     ((executable-find browse-url-galeon-program) 'browse-url-galeon)
     ((executable-find browse-url-kde-program) 'browse-url-kde)
     ((executable-find browse-url-netscape-program) 'browse-url-netscape)
@@ -1141,6 +1162,22 @@ (defun browse-url-firefox-sentinel (proc
               (append browse-url-firefox-startup-arguments (list url))))))
 
 ;;;###autoload
+(defun browse-url-chromium (url &optional new-window)
+  "Ask the Chromium WWW browser to load URL.
+Default to the URL around or before point.  The strings in
+variable `browse-url-chromium-arguments' are also passed to
+Chromium."
+  (interactive (browse-url-interactive-arg "URL: "))
+  (setq url (browse-url-encode-url url))
+  (let* ((process-environment (browse-url-process-environment)))
+    (apply 'start-process
+          (concat "chromium " url) nil
+          browse-url-chromium-program
+          (append
+           browse-url-chromium-arguments
+           (list url)))))
+
+;;;###autoload
 (defun browse-url-galeon (url &optional new-window)
   "Ask the Galeon WWW browser to load URL.
 Default to the URL around or before point.  The strings in variable






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