emacs, dot-emacs: Overhaul of URL browsing in Emacs.

[profile] / dot-emacs.el

diff --git a/dot-emacs.el b/dot-emacs.el
index 66f9190..ca053b4 100644 (file)
--- a/dot-emacs.el
+++ b/dot-emacs.el
@@ -36,6 +36,47 @@
        ,(if (cdr forms) (cons 'progn forms) (car forms))
      (error (message "Error (trapped): %s" (error-message-string err)))))
 
+;; --- Configuration reading ---
+
+(defvar mdw-config nil)
+(defun mdw-config (sym)
+  "Read the configuration variable named SYM."
+  (unless mdw-config
+    (setq mdw-config (with-temp-buffer
+                      (insert-file-contents "~/.mdw.conf")
+                      (replace-regexp "^[ \t]*\\(#.*\\|\\)\n" ""
+                                      nil (point-min) (point-max))
+                      (replace-regexp (concat "^[ \t]*"
+                                              "\\([-a-zA-Z0-9_.]*\\)"
+                                              "[ \t]*=[ \t]*"
+                                              "\\(.*[^ \t\n]\\|\\)"
+                                              "[ \t]**\\(\n\\|$\\)")
+                                      "(\\1 . \"\\2\") "
+                                      nil (point-min) (point-max))
+                      (car (read-from-string
+                            (concat "(" (buffer-string) ")"))))))
+  (cdr (assq sym mdw-config)))
+
+;; --- Is an Emacs library available? ---
+
+(defun library-exists-p (name)
+  "Return non-nil if NAME.el (or NAME.elc) is somewhere on the Emacs load
+path.  The non-nil value is the filename we found for the library."
+  (let ((path load-path) elt (foundp nil))
+    (while (and path (not foundp))
+      (setq elt (car path))
+      (setq path (cdr path))
+      (setq foundp (or (let ((file (concat elt "/" name ".elc")))
+                        (and (file-exists-p file) file))
+                      (let ((file (concat elt "/" name ".el")))
+                        (and (file-exists-p file) file)))))
+    foundp))
+
+(defun maybe-autoload (symbol file &optional docstring interactivep type)
+  "Set an autoload if the file actually exists."
+  (and (library-exists-p file)
+       (autoload symbol file docstring interactivep type)))
+
 ;; --- Splitting windows ---
 
 (defconst mdw-scrollbar-width (if window-system 6 1)
@@ -251,6 +292,42 @@ Not much right now.  Just support for doing MailCrypt stuff."
     (perform-replace "\n-- \n" "\n-- " nil nil nil)))
 (add-hook 'mail-setup-hook 'mdwmail-mangle-signature)
 
+;;;----- URL viewing --------------------------------------------------------
+
+(defun mdw-w3m-browse-url (url &optional new-session-p)
+  "Invoke w3m on the URL in its current window, or at least a different one.
+If NEW-SESSION-P, start a new session."
+  (interactive "sURL: \nP")
+  (save-excursion
+    (select-window (or (and (not new-session-p)
+                           (get-buffer-window "*w3m*"))
+                      (progn
+                        (if (one-window-p t) (split-window))
+                        (get-lru-window))))
+    (w3m-browse-url url new-session-p)))
+
+(defvar mdw-good-url-browsers
+  '((w3m . mdw-w3m-browse-url)
+    browse-url-w3
+    browse-url-mozilla)
+  "List of good browsers for mdw-good-url-browsers; each item is a browser
+function name, or a cons (CHECK . FUNC).  A symbol FOO stands for (FOO
+. FOO).")
+
+(defun mdw-good-url-browser ()
+  "Return a good URL browser.  Trundle the list of such things, finding the
+first item for which CHECK is fboundp, and returning the correponding FUNC."
+  (let ((bs mdw-good-url-browsers) b check func answer)
+    (while (and bs (not answer))
+      (setq b (car bs)
+           bs (cdr bs))
+      (if (consp b)
+         (setq check (car b) func (cdr b))
+       (setq check b func b))
+      (if (fboundp check)
+         (setq answer func)))
+    answer))
+
 ;;;----- Paragraph filling --------------------------------------------------
 
 ;; --- Useful variables ---
@@ -1010,7 +1087,7 @@ strip numbers instead."
                        "del" "elif" "else" "except" "exec" "finally" "for"
                        "from" "global" "if" "import" "in" "is" "lambda"
                        "not" "or" "pass" "print" "raise" "return" "try"
-                       "while"))))
+                       "while" "yield"))))
     (setq font-lock-keywords
          (list
           't
@@ -1550,12 +1627,11 @@ strip numbers instead."
                                      "\\)\\>\\|[0-9]+\\|$\\)\\)")
                              '(1 font-lock-keyword-face)))
                  message-mode-keywords)))
-  (setq font-lock-defaults
-       '(message-mode-keywords nil nil nil nil))
   (turn-on-font-lock-if-enabled)
-  (run-hooks 'messages-mode-hook))
+  (run-hooks 'cpp-messages-mode-hook))
 
-(add-hook 'messages-file-hook 'mdw-misc-mode-config t)
+(add-hook 'messages-mode-hook 'mdw-misc-mode-config t)
+(add-hook 'cpp-messages-mode-hook 'mdw-misc-mode-config t)
 ; (add-hook 'messages-file-hook 'mdw-fontify-messages t)
 
 ;;;----- Messages-file mode -------------------------------------------------
@@ -1729,7 +1805,7 @@ strip numbers instead."
            'comint-watch-for-password-prompt))
 
 (defun mdw-term-mode-setup ()
-  (setq term-prompt-regexp "^[^]#$%>»\n]*[]#$%>»] *")
+  (setq term-prompt-regexp "^[^]#$%>»}\n]*[]#$%>»}] *")
   (make-local-variable 'mouse-yank-at-point)
   (make-local-variable 'transient-mark-mode)
   (setq mouse-yank-at-point t)