diff options
Diffstat (limited to 'lisp/startup.el')
| -rw-r--r-- | lisp/startup.el | 428 |
1 files changed, 215 insertions, 213 deletions
diff --git a/lisp/startup.el b/lisp/startup.el index 184a2424756..3ab65eba5d0 100644 --- a/lisp/startup.el +++ b/lisp/startup.el @@ -36,6 +36,13 @@ (defvar command-line-processed nil "Non-nil once command line has been processed.") +(defvar window-system initial-window-system + "Name of window system the selected frame is displaying through. +The value is a symbol--for instance, `x' for X windows. +The value is nil if the selected frame is on a text-only-terminal.") + +(make-variable-frame-local 'window-system) + (defgroup initialization nil "Emacs start-up procedure." :group 'internal) @@ -437,36 +444,19 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." ;; for instance due to a dense colormap. (when (or frame-initial-frame ;; If frame-initial-frame has no meaning, do this anyway. - (not (and window-system + (not (and initial-window-system (not noninteractive) - (not (eq window-system 'pc))))) + (not (eq initial-window-system 'pc))))) ;; Modify the initial frame based on what .emacs puts into ;; ...-frame-alist. (if (fboundp 'frame-notice-user-settings) (frame-notice-user-settings)) + ;; Set the faces for the initial background mode even if + ;; frame-notice-user-settings didn't (such as on a tty). + ;; frame-set-background-mode is idempotent, so it won't + ;; cause any harm if it's already been done. (if (fboundp 'frame-set-background-mode) - ;; Set the faces for the initial background mode even if - ;; frame-notice-user-settings didn't (such as on a tty). - ;; frame-set-background-mode is idempotent, so it won't - ;; cause any harm if it's already been done. - (let ((frame (selected-frame)) - term) - (when (and (null window-system) - ;; Don't override default set by files in lisp/term. - (null default-frame-background-mode) - (let ((bg (frame-parameter frame 'background-color))) - (or (null bg) - (member bg '(unspecified "unspecified-bg" - "unspecified-fg"))))) - - (setq term (getenv "TERM")) - ;; Some files in lisp/term do a better job with the - ;; background mode, but we leave this here anyway, in - ;; case they remove those files. - (if (string-match "^\\(xterm\\|rxvt\\|dtterm\\|eterm\\)" - term) - (setq default-frame-background-mode 'light))) - (frame-set-background-mode (selected-frame))))) + (frame-set-background-mode (selected-frame)))) ;; Now we know the user's default font, so add it to the menu. (if (fboundp 'font-menu-add-default) @@ -507,6 +497,20 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." (defvar tool-bar-originally-present nil "Non-nil if tool-bars are present before user and site init files are read.") +(defvar handle-args-function-alist '((nil . tty-handle-args)) + "Functions for processing window-system dependent command-line arguments. +Window system startup files should add their own function to this +alist, which should parse the command line arguments. Those +pertaining to the window system should be processed and removed +from the returned command line.") + +(defvar window-system-initialization-alist '((nil . ignore)) + "Alist of window-system initialization functions. +Window-system startup files should add their own initialization +function to this list. The function should take no arguments, +and initialize the window system environment to prepare for +opening the first frame (e.g. open a connection to an X server).") + ;; Handle the X-like command-line arguments "-fg", "-bg", "-name", etc. (defun tty-handle-args (args) (let (rest) @@ -611,16 +615,22 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." (setq eol-mnemonic-dos "(DOS)" eol-mnemonic-mac "(Mac)"))) - ;; Read window system's init file if using a window system. + ;; Make sure window system's init file was loaded in loadup.el if using a window system. (condition-case error - (if (and window-system (not noninteractive)) - (load (concat term-file-prefix - (symbol-name window-system) - "-win") - ;; Every window system should have a startup file; - ;; barf if we can't find it. - nil t)) - ;; If we can't read it, print the error message and exit. + (unless noninteractive + (if (and initial-window-system + (not (featurep + (intern (concat (symbol-name initial-window-system) "-win"))))) + (error "Unsupported window system `%s'" initial-window-system)) + ;; Process window-system specific command line parameters. + (setq command-line-args + (funcall (or (cdr (assq initial-window-system handle-args-function-alist)) + (error "Unsupported window system `%s'" initial-window-system)) + command-line-args)) + ;; Initialize the window system. (Open connection, etc.) + (funcall (or (cdr (assq initial-window-system window-system-initialization-alist)) + (error "Unsupported window system `%s'" initial-window-system)))) + ;; If there was an error, print the error message and exit. (error (princ (if (eq (car error) 'error) @@ -636,13 +646,9 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." (cdr error) ", ")))) 'external-debugging-output) (terpri 'external-debugging-output) - (setq window-system nil) + (setq initial-window-system nil) (kill-emacs))) - ;; Windowed displays do this inside their *-win.el. - (unless (or (display-graphic-p) noninteractive) - (setq command-line-args (tty-handle-args command-line-args))) - (set-locale-environment nil) ;; Convert preloaded file names in load-history to absolute. @@ -765,7 +771,7 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." ;; If frame was created with a menu bar, set menu-bar-mode on. (unless (or noninteractive emacs-basic-display - (and (memq window-system '(x w32)) + (and (memq initial-window-system '(x w32)) (<= (frame-parameter nil 'menu-bar-lines) 0))) (menu-bar-mode 1)) @@ -779,7 +785,6 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." ;; Can't do this init in defcustom because the relevant variables ;; are not set. (custom-reevaluate-setting 'blink-cursor-mode) - (custom-reevaluate-setting 'normal-erase-is-backspace) (custom-reevaluate-setting 'tooltip-mode) (custom-reevaluate-setting 'global-font-lock-mode) (custom-reevaluate-setting 'mouse-wheel-down-event) @@ -788,13 +793,15 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." (custom-reevaluate-setting 'send-mail-function) (custom-reevaluate-setting 'focus-follows-mouse) + (normal-erase-is-backspace-setup-frame) + ;; Register default TTY colors for the case the terminal hasn't a - ;; terminal init file. - (unless (memq window-system '(x w32 mac)) - ;; We do this regardles of whether the terminal supports colors - ;; or not, since they can switch that support on or off in - ;; mid-session by setting the tty-color-mode frame parameter. - (tty-register-default-colors)) + ;; terminal init file. We do this regardles of whether the terminal + ;; supports colors or not and regardless the current display type, + ;; since users can connect to color-capable terminals and also + ;; switch color support on or off in mid-session by setting the + ;; tty-color-mode frame parameter. + (tty-register-default-colors) ;; Record whether the tool-bar is present before the user and site ;; init files are processed. frame-notice-user-settings uses this @@ -1063,31 +1070,8 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'." ;; Load library for our terminal type. ;; User init file can set term-file-prefix to nil to prevent this. (unless (or noninteractive - window-system - (null term-file-prefix)) - (let* ((TERM (getenv "TERM")) - (term TERM) - hyphend) - (while (and term - (not (load (concat term-file-prefix term) t t))) - ;; Strip off last hyphen and what follows, then try again - (setq term - (if (setq hyphend (string-match "[-_][^-_]+\\'" term)) - (substring term 0 hyphend) - nil))) - (setq term TERM) - ;; The terminal file has been loaded, now call the terminal specific - ;; initialization function. - (while term - (let ((term-init-func (intern-soft (concat "terminal-init-" term)))) - (if (not (fboundp term-init-func)) - ;; Strip off last hyphen and what follows, then try again - (setq term - (if (setq hyphend (string-match "[-_][^-_]+\\'" term)) - (substring term 0 hyphend) - nil)) - (setq term nil) - (funcall term-init-func)))))) + initial-window-system) + (tty-run-terminal-initialization (selected-frame))) ;; Update the out-of-memory error message based on user's key bindings ;; for save-some-buffers. @@ -1360,7 +1344,6 @@ Warning Warning!!! Pure space overflow !!!Warning Warning (force-mode-line-update) (setq fancy-current-text (cdr fancy-current-text)))) - (defun fancy-splash-default-action () "Stop displaying the splash screen buffer. This is an internal function used to turn off the splash screen after @@ -1370,20 +1353,23 @@ mouse." (if (and (memq 'down (event-modifiers last-command-event)) (eq (posn-window (event-start last-command-event)) (selected-window))) - ;; This is a mouse-down event in the spash screen window. + ;; This is a mouse-down event in the splash screen window. ;; Ignore it and consume the corresponding mouse-up event. (read-event) (push last-command-event unread-command-events)) (throw 'exit nil)) -(defun fancy-splash-special-event-action () - "Save the last event and stop displaying the splash screen buffer. -This is an internal function used to turn off the splash screen after -the user caused an input event that is bound in `special-event-map'" - (interactive) - (setq fancy-splash-last-input-event last-input-event) - (throw 'exit nil)) +(defun fancy-splash-exit () + "Exit the splash screen." + (if (get-buffer "GNU Emacs") + (throw 'stop-splashing nil))) +(defun fancy-splash-delete-frame (frame) + "Exit the splash screen after the frame is deleted." + ;; We can not throw from `delete-frame-events', so we set up a timer + ;; to exit the recursive edit as soon as Emacs is idle again. + (if (frame-live-p frame) + (run-at-time 0 nil 'fancy-splash-exit))) (defun fancy-splash-screens (&optional hide-on-input) "Display fancy splash screens when Emacs starts." @@ -1403,27 +1389,32 @@ the user caused an input event that is bound in `special-event-map'" (setq splash-buffer (current-buffer)) (catch 'stop-splashing (unwind-protect - (let ((map (make-sparse-keymap)) - (cursor-type nil)) - (use-local-map map) - (define-key map [switch-frame] 'ignore) + (let* ((map (make-sparse-keymap)) + (cursor-type nil) + (overriding-local-map map) + ;; Catch if our frame is deleted; the delete-frame + ;; event is unreliable and is handled by + ;; `special-event-map' anyway. + (delete-frame-functions (cons 'fancy-splash-delete-frame + delete-frame-functions))) (define-key map [t] 'fancy-splash-default-action) (define-key map [mouse-movement] 'ignore) (define-key map [mode-line t] 'ignore) - ;; Temporarily bind special events to - ;; fancy-splash-special-event-action so as to stop - ;; displaying splash screens with such events. - ;; Otherwise, drag-n-drop into splash screens may - ;; leave us in recursive editing with invisible - ;; cursors for a while. - (setq special-event-map (make-sparse-keymap)) - (map-keymap - (lambda (key def) - (define-key special-event-map (vector key) - (if (eq def 'ignore) - 'ignore - 'fancy-splash-special-event-action))) - old-special-event-map) + (define-key map [select-window] 'ignore) + ;; Temporarily bind special events to + ;; fancy-splash-special-event-action so as to stop + ;; displaying splash screens with such events. + ;; Otherwise, drag-n-drop into splash screens may + ;; leave us in recursive editing with invisible + ;; cursors for a while. + (setq special-event-map (make-sparse-keymap)) + (map-keymap + (lambda (key def) + (define-key special-event-map (vector key) + (if (eq def 'ignore) + 'ignore + 'fancy-splash-special-event-action))) + old-special-event-map) (setq display-hourglass nil minor-mode-map-alist nil emulation-mode-map-alists nil @@ -1443,12 +1434,15 @@ the user caused an input event that is bound in `special-event-map'" emulation-mode-map-alists old-emulation-mode-map-alists special-event-map old-special-event-map) (kill-buffer splash-buffer) + (when (frame-live-p frame) + (select-frame frame) + (switch-to-buffer fancy-splash-outer-buffer)) (when fancy-splash-last-input-event (setq last-input-event fancy-splash-last-input-event fancy-splash-last-input-event nil) - (command-execute (lookup-key special-event-map - (vector last-input-event)) - nil (vector last-input-event) t)))))) + (command-execute (lookup-key special-event-map + (vector last-input-event)) + nil (vector last-input-event) t)))))) ;; If hide-on-input is nil, don't hide the buffer on input. (if (or (window-minibuffer-p) (window-dedicated-p (selected-window))) @@ -1475,6 +1469,15 @@ Warning Warning!!! Pure space overflow !!!Warning Warning (view-mode-enter nil 'kill-buffer)) (goto-char (point-min))))) +(defun fancy-splash-special-event-action () + "Save the last event and stop displaying the splash screen buffer. +This is an internal function used to turn off the splash screen after +the user caused an input event that is bound in `special-event-map'" + (interactive) + (setq fancy-splash-last-input-event last-input-event) + (throw 'exit nil)) + + (defun fancy-splash-frame () "Return the frame to use for the fancy splash screen. Returning non-nil does not mean we should necessarily @@ -1565,89 +1568,89 @@ More Manuals / Ordering Manuals How to order printed manuals from the FSF (insert "\n\n" (emacs-version) "\n" emacs-copyright)) - ;; No mouse menus, so give help using kbd commands. - - ;; If keys have their default meanings, - ;; use precomputed string to save lots of time. - (if (and (eq (key-binding "\C-h") 'help-command) - (eq (key-binding "\C-xu") 'advertised-undo) - (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs) - (eq (key-binding "\C-ht") 'help-with-tutorial) - (eq (key-binding "\C-hi") 'info) - (eq (key-binding "\C-hr") 'info-emacs-manual) - (eq (key-binding "\C-h\C-n") 'view-emacs-news)) - (insert " + ;; No mouse menus, so give help using kbd commands. + + ;; If keys have their default meanings, + ;; use precomputed string to save lots of time. + (if (and (eq (key-binding "\C-h") 'help-command) + (eq (key-binding "\C-xu") 'advertised-undo) + (eq (key-binding "\C-x\C-c") 'save-buffers-kill-terminal) + (eq (key-binding "\C-ht") 'help-with-tutorial) + (eq (key-binding "\C-hi") 'info) + (eq (key-binding "\C-hr") 'info-emacs-manual) + (eq (key-binding "\C-h\C-n") 'view-emacs-news)) + (insert " Get help C-h (Hold down CTRL and press h) Emacs manual C-h r Emacs tutorial C-h t Undo changes C-x u Buy manuals C-h C-m Exit Emacs C-x C-c Browse manuals C-h i") - (insert (substitute-command-keys - (format "\n + (insert (substitute-command-keys + (format "\n Get help %s Emacs manual \\[info-emacs-manual] Emacs tutorial \\[help-with-tutorial]\tUndo changes\t\\[advertised-undo] -Buy manuals \\[view-order-manuals]\tExit Emacs\t\\[save-buffers-kill-emacs] +Buy manuals \\[view-order-manuals]\tExit Emacs\t\\[save-buffers-kill-terminal] Browse manuals \\[info]" - (let ((where (where-is-internal - 'help-command nil t))) - (if where - (key-description where) - "M-x help")))))) - - ;; Say how to use the menu bar with the keyboard. - (if (and (eq (key-binding "\M-`") 'tmm-menubar) - (eq (key-binding [f10]) 'tmm-menubar)) - (insert " + (let ((where (where-is-internal + 'help-command nil t))) + (if where + (key-description where) + "M-x help")))))) + + ;; Say how to use the menu bar with the keyboard. + (if (and (eq (key-binding "\M-`") 'tmm-menubar) + (eq (key-binding [f10]) 'tmm-menubar)) + (insert " Activate menubar F10 or ESC ` or M-`") - (insert (substitute-command-keys " + (insert (substitute-command-keys " Activate menubar \\[tmm-menubar]"))) - ;; Many users seem to have problems with these. - (insert " + ;; Many users seem to have problems with these. + (insert " \(`C-' means use the CTRL key. `M-' means use the Meta (or Alt) key. If you have no Meta key, you may instead type ESC followed by the character.)") (insert "\n\n" (emacs-version) "\n" emacs-copyright) - (if (and (eq (key-binding "\C-h\C-c") 'describe-copying) - (eq (key-binding "\C-h\C-d") 'describe-distribution) - (eq (key-binding "\C-h\C-w") 'describe-no-warranty)) - (insert - "\n + (if (and (eq (key-binding "\C-h\C-c") 'describe-copying) + (eq (key-binding "\C-h\C-d") 'describe-distribution) + (eq (key-binding "\C-h\C-w") 'describe-no-warranty)) + (insert + "\n GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details. Emacs is Free Software--Free as in Freedom--so you can redistribute copies of Emacs and modify it; type C-h C-c to see the conditions. Type C-h C-d for information on getting the latest version.") - (insert (substitute-command-keys - "\n + (insert (substitute-command-keys + "\n GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details. Emacs is Free Software--Free as in Freedom--so you can redistribute copies of Emacs and modify it; type \\[describe-copying] to see the conditions. Type \\[describe-distribution] for information on getting the latest version.")))) - ;; The rest of the startup screen is the same on all - ;; kinds of terminals. - - ;; Give information on recovering, if there was a crash. - (and auto-save-list-file-prefix - ;; Don't signal an error if the - ;; directory for auto-save-list files - ;; does not yet exist. - (file-directory-p (file-name-directory - auto-save-list-file-prefix)) - (directory-files - (file-name-directory auto-save-list-file-prefix) - nil - (concat "\\`" - (regexp-quote (file-name-nondirectory - auto-save-list-file-prefix))) - t) - (insert "\n\nIf an Emacs session crashed recently, " - "type Meta-x recover-session RET\nto recover" - " the files you were editing.")) + ;; The rest of the startup screen is the same on all + ;; kinds of terminals. + + ;; Give information on recovering, if there was a crash. + (and auto-save-list-file-prefix + ;; Don't signal an error if the + ;; directory for auto-save-list files + ;; does not yet exist. + (file-directory-p (file-name-directory + auto-save-list-file-prefix)) + (directory-files + (file-name-directory auto-save-list-file-prefix) + nil + (concat "\\`" + (regexp-quote (file-name-nondirectory + auto-save-list-file-prefix))) + t) + (insert "\n\nIf an Emacs session crashed recently, " + "type Meta-x recover-session RET\nto recover" + " the files you were editing.")) ;; Display the input that we set up in the buffer. (set-buffer-modified-p nil) @@ -1655,20 +1658,18 @@ Type \\[describe-distribution] for information on getting the latest version.")) (if (and view-read-only (not view-mode)) (view-mode-enter nil 'kill-buffer)) (goto-char (point-min)) - (if hide-on-input - (if (or (window-minibuffer-p) - (window-dedicated-p (selected-window))) - ;; If hide-on-input is nil, creating a new frame will - ;; generate enough events that the subsequent `sit-for' - ;; will immediately return anyway. - nil ;; (pop-to-buffer (current-buffer)) + (if hide-on-input + (if (or (window-minibuffer-p) + (window-dedicated-p (selected-window))) + ;; If hide-on-input is nil, creating a new frame will + ;; generate enough events that the subsequent `sit-for' + ;; will immediately return anyway. + nil ;; (pop-to-buffer (current-buffer)) (save-window-excursion - (switch-to-buffer (current-buffer)) - (sit-for 120))) - (condition-case nil - (switch-to-buffer (current-buffer)) - ;; In case the window is dedicated or something. - (error (pop-to-buffer (current-buffer)))))) + (switch-to-buffer (current-buffer)) + (sit-for 120)) + (condition-case nil + (switch-to-buffer (current-buffer)))))) ;; Unwind ... ensure splash buffer is killed (if hide-on-input (kill-buffer "GNU Emacs") @@ -1686,7 +1687,45 @@ Type \\[describe-distribution] for information on getting the latest version.")) (defun display-startup-echo-area-message () (let ((resize-mini-windows t)) - (message "%s" (startup-echo-area-message)))) + (or noninteractive ;(input-pending-p) init-file-had-error + ;; t if the init file says to inhibit the echo area startup message. + (and inhibit-startup-echo-area-message + user-init-file + (or (and (get 'inhibit-startup-echo-area-message 'saved-value) + (equal inhibit-startup-echo-area-message + (if (equal init-file-user "") + (user-login-name) + init-file-user))) + ;; Wasn't set with custom; see if .emacs has a setq. + (let ((buffer (get-buffer-create " *temp*"))) + (prog1 + (condition-case nil + (save-excursion + (set-buffer buffer) + (insert-file-contents user-init-file) + (re-search-forward + (concat + "([ \t\n]*setq[ \t\n]+" + "inhibit-startup-echo-area-message[ \t\n]+" + (regexp-quote + (prin1-to-string + (if (equal init-file-user "") + (user-login-name) + init-file-user))) + "[ \t\n]*)") + nil t)) + (error nil)) + (kill-buffer buffer))))) + ;; display-splash-screen at the end of command-line-1 calls + ;; use-fancy-splash-screens-p. This can cause image.el to be + ;; loaded, putting "Loading image... done" in the echo area. + ;; This hides startup-echo-area-message. So + ;; use-fancy-splash-screens-p is called here simply to get the + ;; loading of image.el (if needed) out of the way before + ;; display-startup-echo-area-message runs. + (progn + (use-fancy-splash-screens-p) + (message "%s" (startup-echo-area-message)))))) (defun display-splash-screen (&optional hide-on-input) @@ -1695,51 +1734,14 @@ Fancy splash screens are used on graphic displays, normal otherwise. With a prefix argument, any user input hides the splash screen." (interactive "P") - (if (use-fancy-splash-screens-p) - (fancy-splash-screens hide-on-input) - (normal-splash-screen hide-on-input))) - + ;; Prevent recursive calls from server-process-filter. + (if (not (get-buffer "GNU Emacs")) + (if (use-fancy-splash-screens-p) + (fancy-splash-screens hide-on-input) + (normal-splash-screen hide-on-input)))) (defun command-line-1 (command-line-args-left) - (or noninteractive (input-pending-p) init-file-had-error - ;; t if the init file says to inhibit the echo area startup message. - (and inhibit-startup-echo-area-message - user-init-file - (or (and (get 'inhibit-startup-echo-area-message 'saved-value) - (equal inhibit-startup-echo-area-message - (if (equal init-file-user "") - (user-login-name) - init-file-user))) - ;; Wasn't set with custom; see if .emacs has a setq. - (let ((buffer (get-buffer-create " *temp*"))) - (prog1 - (condition-case nil - (save-excursion - (set-buffer buffer) - (insert-file-contents user-init-file) - (re-search-forward - (concat - "([ \t\n]*setq[ \t\n]+" - "inhibit-startup-echo-area-message[ \t\n]+" - (regexp-quote - (prin1-to-string - (if (equal init-file-user "") - (user-login-name) - init-file-user))) - "[ \t\n]*)") - nil t)) - (error nil)) - (kill-buffer buffer))))) - ;; display-splash-screen at the end of command-line-1 calls - ;; use-fancy-splash-screens-p. This can cause image.el to be - ;; loaded, putting "Loading image... done" in the echo area. - ;; This hides startup-echo-area-message. So - ;; use-fancy-splash-screens-p is called here simply to get the - ;; loading of image.el (if needed) out of the way before - ;; display-startup-echo-area-message runs. - (progn - (use-fancy-splash-screens-p) - (display-startup-echo-area-message))) + (display-startup-echo-area-message) ;; Delay 2 seconds after an init file error message ;; was displayed, so user can read it. |