(require 'cl)
(defalias 'current-time-seconds 'current-time)
(defun read-number (prompt &optional integers-only)
"Read a number from the minibuffer.
Keep reentering the minibuffer until we get suitable input.
If optional argument INTEGERS-ONLY is non-nil, insist on an integer."
(interactive)
(let (success
(number nil)
(predicate (if integers-only 'integerp 'numberp)))
(while (not success)
(let ((input-string (read-string prompt)))
(condition-case ()
(setq number (read input-string))
(error))
(if (funcall predicate number)
(setq success t)
(let ((cursor-in-echo-area t))
(message "Please type %s"
(if integers-only "an integer" "a number"))
(sit-for 1)))))
number))
(defun real-path-name (name &optional default)
(file-truename (expand-file-name name default)))
(defun read-mouse-position (frame)
(let ((pos (mouse-position)))
(if (eq (car pos) frame)
(cdr pos))))
(defun switch-to-other-buffer (arg)
"Switch to the previous buffer.
With a numeric arg N, switch to the Nth most recent buffer.
With an arg of 0, buries the current buffer at the
bottom of the buffer stack."
(interactive "p")
(if (eq arg 0)
(bury-buffer (current-buffer)))
(switch-to-buffer
(if (<= arg 1) (other-buffer (current-buffer))
(nth arg
(apply 'nconc
(mapcar
(lambda (buf)
(if (= ?\ (string-to-char (buffer-name buf)))
nil
(list buf)))
(buffer-list)))))))
(defun device-class (&optional device)
"Return the class (color behavior) of DEVICE.
This will be one of 'color, 'grayscale, or 'mono.
This function exists for compatibility with XEmacs."
(cond
((display-color-p device) 'color)
((display-grayscale-p device) 'grayscale)
(t 'mono)))
(defalias 'find-face 'internal-find-face)
(defalias 'get-face 'internal-get-face)
(defalias 'try-face-font 'internal-try-face-font)
(defalias 'exec-to-string 'shell-command-to-string)
(defun buffer-syntactic-context (&optional buffer)
"Syntactic context at point in BUFFER.
Either of `string', `comment' or nil.
This is an XEmacs compatibility function."
(with-current-buffer (or buffer (current-buffer))
(let ((state (syntax-ppss (point))))
(cond
((nth 3 state) 'string)
((nth 4 state) 'comment)))))
(defun buffer-syntactic-context-depth (&optional buffer)
"Syntactic parenthesis depth at point in BUFFER.
This is an XEmacs compatibility function."
(with-current-buffer (or buffer (current-buffer))
(nth 0 (syntax-ppss (point)))))
(defun make-extent (beg end &optional buffer)
(make-overlay beg end buffer))
(defun extent-properties (extent) (overlay-properties extent))
(unless (fboundp 'extent-property) (defalias 'extent-property 'overlay-get))
(defun extent-at (pos &optional object property before)
(with-current-buffer (or object (current-buffer))
(let ((overlays (overlays-at pos)))
(when property
(let (filtered)
(while overlays
(if (overlay-get (car overlays) property)
(setq filtered (cons (car overlays) filtered)))
(setq overlays (cdr overlays)))
(setq overlays filtered)))
(setq overlays
(sort overlays
(function (lambda (o1 o2)
(let ((p1 (or (overlay-get o1 'priority) 0))
(p2 (or (overlay-get o2 'priority) 0)))
(or (> p1 p2)
(and (= p1 p2)
(> (overlay-start o1) (overlay-start o2)))))))))
(if before
(nth 1 (memq before overlays))
(car overlays)))))
(defun set-extent-property (extent prop value)
(and (eq prop 'mouse-face)
(symbolp value)
(setq value (list value)))
(if (eq prop 'duplicable)
(cond ((and value (not (overlay-get extent prop)))
(add-text-properties (overlay-start extent)
(overlay-end extent)
(overlay-properties extent)
(overlay-buffer extent)))
((and (not value) (overlay-get extent prop))
(remove-text-properties (overlay-start extent)
(overlay-end extent)
(overlay-properties extent)
(overlay-buffer extent))))
(if (overlay-get extent 'duplicable)
(put-text-property (overlay-start extent)
(overlay-end extent)
prop value (overlay-buffer extent))))
(overlay-put extent prop value))
(defun set-extent-face (extent face)
(set-extent-property extent 'face face))
(defun set-extent-end-glyph (extent glyph)
(set-extent-property extent 'after-string glyph))
(defun delete-extent (extent)
(set-extent-property extent 'duplicable nil)
(delete-overlay extent))
(defalias 'current-screen-configuration 'current-frame-configuration)
(defalias 'delete-screen 'delete-frame)
(defalias 'find-file-new-screen 'find-file-other-frame)
(defalias 'find-file-read-only-new-screen 'find-file-read-only-other-frame)
(defalias 'find-tag-new-screen 'find-tag-other-frame)
(defalias 'iconify-screen 'iconify-frame)
(defalias 'mail-new-screen 'mail-other-frame)
(defalias 'make-screen-invisible 'make-frame-invisible)
(defalias 'make-screen-visible 'make-frame-visible)
(defalias 'modify-screen-parameters 'modify-frame-parameters)
(defalias 'next-screen 'next-frame)
(defalias 'redraw-screen 'redraw-frame)
(defalias 'screen-list 'frame-list)
(defalias 'screen-parameters 'frame-parameters)
(defalias 'screen-pixel-height 'frame-pixel-height)
(defalias 'screen-pixel-width 'frame-pixel-width)
(defalias 'screen-root-window 'frame-root-window)
(defalias 'screen-selected-window 'frame-selected-window)
(defalias 'lower-screen 'lower-frame)
(defalias 'raise-screen 'raise-frame)
(defalias 'screen-visible-p 'frame-visible-p)
(defalias 'screenp 'framep)
(defalias 'select-screen 'select-frame)
(defalias 'selected-screen 'selected-frame)
(defalias 'set-screen-position 'set-frame-position)
(defalias 'set-screen-size 'set-frame-size)
(defalias 'switch-to-buffer-new-screen 'switch-to-buffer-other-frame)
(defalias 'visible-screen-list 'visible-frame-list)
(defalias 'window-screen 'window-frame)
(defalias 'x-create-screen 'x-create-frame)
(defalias 'x-new-screen 'make-frame)
(provide 'lucid)