diff options
Diffstat (limited to 'lisp/calc/calc.el')
| -rw-r--r-- | lisp/calc/calc.el | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/lisp/calc/calc.el b/lisp/calc/calc.el index 2eeb880c34d..2795a177a41 100644 --- a/lisp/calc/calc.el +++ b/lisp/calc/calc.el @@ -1387,7 +1387,12 @@ Notations: 3.14e6 3.14 * 10^6 (calc-check-defines)) (setplist 'calc-define nil))))) -(defun calc-trail-mode (&optional buf) +(defvar calc-trail-mode-map + (let ((map (make-sparse-keymap))) + (set-keymap-parent map calc-mode-map) + map)) + +(define-derived-mode calc-trail-mode fundamental-mode "Calc Trail" "Calc Trail mode. This mode is used by the *Calc Trail* buffer, which records all results obtained by the GNU Emacs Calculator. @@ -1397,26 +1402,18 @@ the Trail. This buffer uses the same key map as the *Calculator* buffer; calculator commands given here will actually operate on the *Calculator* stack." - (interactive) - (fundamental-mode) - (use-local-map calc-mode-map) - (setq major-mode 'calc-trail-mode) - (setq mode-name "Calc Trail") (setq truncate-lines t) (setq buffer-read-only t) (make-local-variable 'overlay-arrow-position) (make-local-variable 'overlay-arrow-string) - (when buf - (set (make-local-variable 'calc-main-buffer) buf)) (when (= (buffer-size) 0) (let ((buffer-read-only nil)) - (insert (propertize "Emacs Calculator Trail\n" 'face 'italic)))) - (run-mode-hooks 'calc-trail-mode-hook)) + (insert (propertize "Emacs Calculator Trail\n" 'face 'italic))))) (defun calc-create-buffer () "Create and initialize a buffer for the Calculator." (set-buffer (get-buffer-create "*Calculator*")) - (or (eq major-mode 'calc-mode) + (or (derived-mode-p 'calc-mode) (calc-mode)) (setq max-lisp-eval-depth (max max-lisp-eval-depth 1000)) (when calc-always-load-extensions @@ -1439,7 +1436,7 @@ commands given here will actually operate on the *Calculator* stack." (when (get-buffer-window "*Calc Keypad*") (calc-keypad) (set-buffer (window-buffer))) - (if (eq major-mode 'calc-mode) + (if (derived-mode-p 'calc-mode) (calc-quit) (let ((oldbuf (current-buffer))) (calc-create-buffer) @@ -1490,7 +1487,7 @@ commands given here will actually operate on the *Calculator* stack." (if (and (equal (buffer-name) "*Gnuplot Trail*") (> (recursion-depth) 0)) (exit-recursive-edit) - (if (eq major-mode 'calc-edit-mode) + (if (derived-mode-p 'calc-edit-mode) (calc-edit-finish arg) (if calc-was-keypad-mode (calc-keypad) @@ -1504,13 +1501,13 @@ commands given here will actually operate on the *Calculator* stack." (if (and (equal (buffer-name) "*Gnuplot Trail*") (> (recursion-depth) 0)) (exit-recursive-edit)) - (if (eq major-mode 'calc-edit-mode) + (if (derived-mode-p 'calc-edit-mode) (calc-edit-cancel) (if (and interactive calc-embedded-info (eq (current-buffer) (aref calc-embedded-info 0))) (calc-embedded nil) - (unless (eq major-mode 'calc-mode) + (unless (derived-mode-p 'calc-mode) (calc-create-buffer)) (run-hooks 'calc-end-hook) (if (integerp calc-undo-length) @@ -1631,10 +1628,10 @@ See calc-keypad for details." (if (math-lessp 1 time) (calc-record time "(t)")))) (or (memq 'no-align calc-command-flags) - (eq major-mode 'calc-trail-mode) + (derived-mode-p 'calc-trail-mode) (calc-align-stack-window)) (and (memq 'position-point calc-command-flags) - (if (eq major-mode 'calc-mode) + (if (derived-mode-p 'calc-mode) (progn (goto-char (point-min)) (forward-line (1- calc-final-point-line)) @@ -1664,7 +1661,7 @@ See calc-keypad for details." (setq calc-command-flags (cons f calc-command-flags)))) (defun calc-select-buffer () - (or (eq major-mode 'calc-mode) + (or (derived-mode-p 'calc-mode) (if calc-main-buffer (set-buffer calc-main-buffer) (let ((buf (get-buffer "*Calculator*"))) @@ -1801,7 +1798,7 @@ See calc-keypad for details." (and calc-embedded-info (calc-embedded-mode-line-change)))))) (defun calc-align-stack-window () - (if (eq major-mode 'calc-mode) + (if (derived-mode-p 'calc-mode) (progn (let ((win (get-buffer-window (current-buffer)))) (if win @@ -1988,7 +1985,7 @@ See calc-keypad for details." (defvar calc-any-evaltos nil) (defun calc-refresh (&optional align) (interactive) - (and (eq major-mode 'calc-mode) + (and (derived-mode-p 'calc-mode) (not calc-executing-macro) (let* ((buffer-read-only nil) (save-point (point)) @@ -2016,7 +2013,7 @@ See calc-keypad for details." (calc-align-stack-window) (goto-char save-point)) (if save-mark (set-mark save-mark)))) - (and calc-embedded-info (not (eq major-mode 'calc-mode)) + (and calc-embedded-info (not (derived-mode-p 'calc-mode)) (with-current-buffer (aref calc-embedded-info 1) (calc-refresh align))) (setq calc-refresh-count (1+ calc-refresh-count))) @@ -2078,12 +2075,13 @@ the United States." (null (buffer-name calc-trail-buffer))) (save-excursion (setq calc-trail-buffer (get-buffer-create "*Calc Trail*")) - (let ((buf (or (and (not (eq major-mode 'calc-mode)) + (let ((buf (or (and (not (derived-mode-p 'calc-mode)) (get-buffer "*Calculator*")) (current-buffer)))) (set-buffer calc-trail-buffer) - (or (eq major-mode 'calc-trail-mode) - (calc-trail-mode buf))))) + (unless (derived-mode-p 'calc-trail-mode) + (calc-trail-mode) + (set (make-local-variable 'calc-main-buffer) buf))))) (or (and calc-trail-pointer (eq (marker-buffer calc-trail-pointer) calc-trail-buffer)) (with-current-buffer calc-trail-buffer @@ -2152,7 +2150,7 @@ the United States." (defun calc-trail-here () (interactive) - (if (eq major-mode 'calc-trail-mode) + (if (derived-mode-p 'calc-trail-mode) (progn (beginning-of-line) (if (bobp) |