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3132f345bc
before their first use. Use `when', `unless'. Remove trailing periods from error forms. Add description and headers suggested by Emacs Lisp coding conventions.
180 lines
4.8 KiB
EmacsLisp
180 lines
4.8 KiB
EmacsLisp
;;; calc-trail.el --- functions for manipulating the Calc "trail"
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;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
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;; Author: David Gillespie <daveg@synaptics.com>
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;; Maintainer: Colin Walters <walters@debian.org>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY. No author or distributor
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;; accepts responsibility to anyone for the consequences of using it
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;; or for whether it serves any particular purpose or works at all,
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;; unless he says so in writing. Refer to the GNU Emacs General Public
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;; License for full details.
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;; Everyone is granted permission to copy, modify and redistribute
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;; GNU Emacs, but only under the conditions described in the
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;; GNU Emacs General Public License. A copy of this license is
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;; supposed to have been given to you along with GNU Emacs so you
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;; can know your rights and responsibilities. It should be in a
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;; file named COPYING. Among other things, the copyright notice
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;; and this notice must be preserved on all copies.
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;;; Commentary:
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;;; Code:
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;; This file is autoloaded from calc-ext.el.
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(require 'calc-ext)
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(require 'calc-macs)
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(defun calc-Need-calc-trail () nil)
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;;; Trail commands.
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(defun calc-trail-in ()
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(interactive)
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(let ((win (get-buffer-window (calc-trail-display t))))
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(and win (select-window win))))
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(defun calc-trail-out ()
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(interactive)
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(calc-select-buffer)
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(let ((win (get-buffer-window (current-buffer))))
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(if win
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(progn
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(select-window win)
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(calc-align-stack-window))
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(calc))))
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(defun calc-trail-next (n)
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(interactive "p")
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(calc-with-trail-buffer
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(forward-line n)
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(calc-trail-here)))
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(defun calc-trail-previous (n)
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(interactive "p")
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(calc-with-trail-buffer
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(forward-line (- n))
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(calc-trail-here)))
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(defun calc-trail-first (n)
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(interactive "p")
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(calc-with-trail-buffer
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(goto-char (point-min))
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(forward-line n)
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(calc-trail-here)))
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(defun calc-trail-last (n)
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(interactive "p")
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(calc-with-trail-buffer
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(goto-char (point-max))
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(forward-line (- n))
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(calc-trail-here)))
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(defun calc-trail-scroll-left (n)
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(interactive "P")
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(let ((curwin (selected-window)))
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(calc-with-trail-buffer
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(unwind-protect
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(progn
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(select-window (get-buffer-window (current-buffer)))
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(calc-scroll-left n))
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(select-window curwin)))))
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(defun calc-trail-scroll-right (n)
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(interactive "P")
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(let ((curwin (selected-window)))
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(calc-with-trail-buffer
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(unwind-protect
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(progn
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(select-window (get-buffer-window (current-buffer)))
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(calc-scroll-right n))
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(select-window curwin)))))
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(defun calc-trail-forward (n)
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(interactive "p")
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(calc-with-trail-buffer
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(forward-line (* n (1- (window-height))))
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(calc-trail-here)))
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(defun calc-trail-backward (n)
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(interactive "p")
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(calc-with-trail-buffer
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(forward-line (- (* n (1- (window-height)))))
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(calc-trail-here)))
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(defun calc-trail-isearch-forward ()
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(interactive)
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(calc-with-trail-buffer
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(save-window-excursion
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(select-window (get-buffer-window (current-buffer)))
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(let ((search-exit-char ?\r))
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(isearch-forward)))
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(calc-trail-here)))
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(defun calc-trail-isearch-backward ()
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(interactive)
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(calc-with-trail-buffer
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(save-window-excursion
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(select-window (get-buffer-window (current-buffer)))
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(let ((search-exit-char ?\r))
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(isearch-backward)))
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(calc-trail-here)))
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(defun calc-trail-yank (arg)
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(interactive "P")
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(calc-wrapper
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(or arg (calc-set-command-flag 'hold-trail))
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(calc-enter-result 0 "yank"
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(calc-with-trail-buffer
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(if arg
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(forward-line (- (prefix-numeric-value arg))))
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(if (or (looking-at "Emacs Calc")
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(looking-at "----")
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(looking-at " ? ? ?[^ \n]* *$")
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(looking-at "..?.?$"))
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(error "Can't yank that line"))
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(if (looking-at ".*, \\.\\.\\., ")
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(error "Can't yank (vector was abbreviated)"))
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(forward-char 4)
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(search-forward " ")
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(let* ((next (save-excursion (forward-line 1) (point)))
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(str (buffer-substring (point) (1- next)))
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(val (save-excursion
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(set-buffer save-buf)
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(math-read-plain-expr str))))
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(if (eq (car-safe val) 'error)
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(error "Can't yank that line: %s" (nth 2 val))
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val))))))
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(defun calc-trail-marker (str)
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(interactive "sText to insert in trail: ")
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(calc-with-trail-buffer
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(forward-line 1)
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(let ((buffer-read-only nil))
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(insert "---- " str "\n"))
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(forward-line -1)
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(calc-trail-here)))
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(defun calc-trail-kill (n)
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(interactive "p")
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(calc-with-trail-buffer
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(let ((buffer-read-only nil))
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(save-restriction
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(narrow-to-region ; don't delete "Emacs Trail" header
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(save-excursion
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(goto-char (point-min))
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(forward-line 1)
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(point))
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(point-max))
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(kill-line n)))
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(calc-trail-here)))
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;;; calc-trail.el ends here
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