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(calc-settings-file-name, calc-save-modes): Handle null

Browse source 
`calc-settings-file'.

Change all toplevel `setq' forms to `defvar' forms, and move them
before their first use.  Use `when', `unless'.  Remove trailing
periods from error forms.  Add description and headers suggested by
Emacs Lisp coding conventions.
This commit is contained in:
Colin Walters 2001-11-19 07:37:04 +00:00
parent dac12d8087
commit cb19607288
1 changed files with 92 additions and 82 deletions
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174
lisp/calc/calc-mode.el
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@ -1,6 +1,9 @@
;; Calculator for GNU Emacs, part II [calc-mode.el]
;;; calc-mode.el --- calculator modes for Calc
;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
;; Written by Dave Gillespie, daveg@synaptics.com.
;; Author: David Gillespie <daveg@synaptics.com>
;; Maintainer: Colin Walters <walters@debian.org>
;; This file is part of GNU Emacs.
@ -19,6 +22,9 @@
;; file named COPYING. Among other things, the copyright notice
;; and this notice must be preserved on all copies.
;;; Commentary:
;;; Code:
;; This file is autoloaded from calc-ext.el.
@ -33,8 +39,8 @@
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-line-numbering n t t)
"Displaying stack level numbers."
"Hiding stack level numbers."))))
"Displaying stack level numbers"
"Hiding stack level numbers"))))
(defun calc-line-breaking (n)
(interactive "P")
@ -46,9 +52,9 @@
(not calc-line-breaking)))
(if (calc-change-mode 'calc-line-breaking n t)
(if (integerp calc-line-breaking)
(message "Breaking lines longer than %d characters." n)
(message "Breaking long lines in Stack display."))
(message "Not breaking long lines in Stack display."))))
(message "Breaking lines longer than %d characters" n)
(message "Breaking long lines in Stack display"))
(message "Not breaking long lines in Stack display"))))
(defun calc-left-justify (n)
@ -58,8 +64,8 @@
(calc-change-mode '(calc-display-just calc-display-origin)
(list nil n) t)
(if n
(message "Displaying stack entries indented by %d." n)
(message "Displaying stack entries left-justified."))))
(message "Displaying stack entries indented by %d" n)
(message "Displaying stack entries left-justified"))))
(defun calc-center-justify (n)
(interactive "P")
@ -68,8 +74,8 @@
(calc-change-mode '(calc-display-just calc-display-origin)
(list 'center n) t)
(if n
(message "Displaying stack entries centered on column %d." n)
(message "Displaying stack entries centered in window."))))
(message "Displaying stack entries centered on column %d" n)
(message "Displaying stack entries centered in window"))))
(defun calc-right-justify (n)
(interactive "P")
@ -78,8 +84,8 @@
(calc-change-mode '(calc-display-just calc-display-origin)
(list 'right n) t)
(if n
(message "Displaying stack entries right-justified to column %d." n)
(message "Displaying stack entries right-justified in window."))))
(message "Displaying stack entries right-justified to column %d" n)
(message "Displaying stack entries right-justified in window"))))
(defun calc-left-label (s)
(interactive "sLefthand label: ")
@ -106,11 +112,11 @@
(setq n (and (not (eq calc-auto-why t)) (if calc-auto-why t 1))))
(calc-change-mode 'calc-auto-why n nil)
(cond ((null n)
(message "User must press `w' to explain unsimplified results."))
(message "User must press `w' to explain unsimplified results"))
((eq n t)
(message "Automatically doing `w' to explain unsimplified results."))
(message "Automatically doing `w' to explain unsimplified results"))
(t
(message "Automatically doing `w' only for unusual messages.")))))
(message "Automatically doing `w' only for unusual messages")))))
(defun calc-group-digits (n)
(interactive "P")
@ -126,30 +132,30 @@
(setq n (not calc-group-digits)))
(calc-change-mode 'calc-group-digits n t)
(cond ((null n)
(message "Grouping is off."))
(message "Grouping is off"))
((integerp n)
(message "Grouping every %d digits." (math-abs n)))
(message "Grouping every %d digits" (math-abs n)))
(t
(message "Grouping is on.")))))
(message "Grouping is on")))))
(defun calc-group-char (ch)
(interactive "cGrouping character: ")
(calc-wrapper
(or (>= ch 32)
(error "Control characters not allowed for grouping."))
(error "Control characters not allowed for grouping"))
(if (= ch ?\\)
(setq ch "\\,")
(setq ch (char-to-string ch)))
(calc-change-mode 'calc-group-char ch calc-group-digits)
(message "Digit grouping character is \"%s\"." ch)))
(message "Digit grouping character is \"%s\"" ch)))
(defun calc-point-char (ch)
(interactive "cCharacter to use as decimal point: ")
(calc-wrapper
(or (>= ch 32)
(error "Control characters not allowed as decimal point."))
(error "Control characters not allowed as decimal point"))
(calc-change-mode 'calc-point-char (char-to-string ch) t)
(message "Decimal point character is \"%c\"." ch)))
(message "Decimal point character is \"%c\"" ch)))
(defun calc-normal-notation (n)
(interactive "P")
@ -163,12 +169,12 @@
(- (% (+ val 5000) 10000) 5000))))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floating-point numbers normally.")
(message "Displaying floating-point numbers normally")
(if (> (nth 1 n) 0)
(message
"Displaying floating-point numbers with %d significant digits."
"Displaying floating-point numbers with %d significant digits"
(nth 1 n))
(message "Displaying floating-point numbers with (precision%d)."
(message "Displaying floating-point numbers with (precision%d)"
(nth 1 n))))))
(defun calc-fix-notation (n)
@ -177,7 +183,7 @@
(calc-change-mode 'calc-float-format
(setq n (list 'fix (if n (prefix-numeric-value n) 0)))
t)
(message "Displaying floats with %d digits after decimal."
(message "Displaying floats with %d digits after decimal"
(math-abs (nth 1 n)))))
(defun calc-sci-notation (n)
@ -187,11 +193,11 @@
(setq n (list 'sci (if n (prefix-numeric-value n) 0)))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floats in scientific notation.")
(message "Displaying floats in scientific notation")
(if (> (nth 1 n) 0)
(message "Displaying scientific notation with %d significant digits."
(message "Displaying scientific notation with %d significant digits"
(nth 1 n))
(message "Displaying scientific notation with (precision%d)."
(message "Displaying scientific notation with (precision%d)"
(nth 1 n))))))
(defun calc-eng-notation (n)
@ -201,11 +207,11 @@
(setq n (list 'eng (if n (prefix-numeric-value n) 0)))
t)
(if (eq (nth 1 n) 0)
(message "Displaying floats in engineering notation.")
(message "Displaying floats in engineering notation")
(if (> (nth 1 n) 0)
(message "Displaying engineering notation with %d significant digits."
(message "Displaying engineering notation with %d significant digits"
(nth 1 n))
(message "Displaying engineering notation with (precision%d)."
(message "Displaying engineering notation with (precision%d)"
(nth 1 n))))))
@ -254,7 +260,7 @@
(setq calc-display-raw (if calc-display-raw nil (if arg 0 t)))
(calc-do-refresh)
(if calc-display-raw
(message "Press d ' again to cancel \"raw\" display mode."))))
(message "Press d ' again to cancel \"raw\" display mode"))))
@ -267,6 +273,8 @@
(let (pos
(vals (mapcar (function (lambda (v) (symbol-value (car v))))
calc-mode-var-list)))
(unless calc-settings-file
(error "No `calc-settings-file' specified"))
(set-buffer (find-file-noselect (substitute-in-file-name
calc-settings-file)))
(goto-char (point-min))
@ -324,7 +332,9 @@
;; FIXME: we should use ~/.calc or so in order to avoid
;; reexecuting ~/.emacs (it's not always idempotent) -cgw 2001.11.12
(setq calc-settings-file name)
(or (and (string-match "\\.emacs" calc-settings-file)
(or (and
calc-settings-file
(string-match "\\.emacs" calc-settings-file)
(> arg 0))
(< arg 0)
(load name t)
@ -415,10 +425,10 @@
((eq calc-mode-save-mode 'global)
"Recording mode changes with [calc-global-mode: ...]")
((eq calc-mode-save-mode 'save)
(format "Recording mode changes in \"%s\"."
(format "Recording mode changes in \"%s\""
calc-settings-file))
(t
"Not recording mode changes permanently.")))))
"Not recording mode changes permanently")))))
(defun calc-total-algebraic-mode (flag)
(interactive "P")
@ -431,7 +441,7 @@
'(total nil))
(use-local-map calc-alg-map)
(message
"All keys begin algebraic entry; use Meta (ESC) for Calc keys."))))
"All keys begin algebraic entry; use Meta (ESC) for Calc keys"))))
(defun calc-algebraic-mode (flag)
(interactive "P")
@ -444,18 +454,18 @@
(list (not calc-algebraic-mode) nil)))
(use-local-map calc-mode-map)
(message (if calc-algebraic-mode
"Numeric keys and ( and [ begin algebraic entry."
"Numeric keys and ( and [ begin algebraic entry"
(if calc-incomplete-algebraic-mode
"Only ( and [ begin algebraic entry."
"No keys except ' and $ begin algebraic entry.")))))
"Only ( and [ begin algebraic entry"
"No keys except ' and $ begin algebraic entry")))))
(defun calc-symbolic-mode (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-symbolic-mode n nil t)
"Inexact computations like sqrt(2) are deferred."
"Numerical computations are always done immediately."))))
"Inexact computations like sqrt(2) are deferred"
"Numerical computations are always done immediately"))))
(defun calc-infinite-mode (n)
(interactive "P")
@ -463,10 +473,10 @@
(if (eq n 0)
(progn
(calc-change-mode 'calc-infinite-mode 1)
(message "Computations like 1 / 0 produce \"inf\"."))
(message "Computations like 1 / 0 produce \"inf\""))
(message (if (calc-change-mode 'calc-infinite-mode n nil t)
"Computations like 1 / 0 produce \"uinf\"."
"Computations like 1 / 0 are left unsimplified.")))))
"Computations like 1 / 0 produce \"uinf\""
"Computations like 1 / 0 are left unsimplified")))))
(defun calc-matrix-mode (arg)
(interactive "P")
@ -480,13 +490,13 @@
((eq calc-matrix-mode 'scalar) nil)
(t 'matrix)))
(if (integerp calc-matrix-mode)
(message "Variables are assumed to be %dx%d matrices."
(message "Variables are assumed to be %dx%d matrices"
calc-matrix-mode calc-matrix-mode)
(message (if (eq calc-matrix-mode 'matrix)
"Variables are assumed to be matrices."
"Variables are assumed to be matrices"
(if calc-matrix-mode
"Variables are assumed to be scalars (non-matrices)."
"Variables are not assumed to be matrix or scalar."))))))
"Variables are assumed to be scalars (non-matrices)"
"Variables are not assumed to be matrix or scalar"))))))
(defun calc-set-simplify-mode (mode arg msg)
(calc-change-mode 'calc-simplify-mode
@ -497,26 +507,26 @@
mode)))
(message (if (eq calc-simplify-mode mode)
msg
"Default simplifications enabled.")))
"Default simplifications enabled")))
(defun calc-no-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'none arg
"All default simplifications are disabled.")))
"All default simplifications are disabled")))
(defun calc-num-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'num arg
"Default simplifications apply only if arguments are numeric.")))
"Default simplifications apply only if arguments are numeric")))
(defun calc-default-simplify-mode (arg)
(interactive "p")
(cond ((= arg 1)
(calc-wrapper
(calc-set-simplify-mode
nil nil "Usual default simplifications are enabled.")))
nil nil "Usual default simplifications are enabled")))
((= arg 0) (calc-num-simplify-mode 1))
((< arg 0) (calc-no-simplify-mode 1))
((= arg 2) (calc-bin-simplify-mode 1))
@ -529,26 +539,26 @@
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'binary arg
(format "Binary simplification occurs by default (word size=%d)."
(format "Binary simplification occurs by default (word size=%d)"
calc-word-size))))
(defun calc-alg-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'alg arg
"Algebraic simplification occurs by default.")))
"Algebraic simplification occurs by default")))
(defun calc-ext-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'ext arg
"Extended algebraic simplification occurs by default.")))
"Extended algebraic simplification occurs by default")))
(defun calc-units-simplify-mode (arg)
(interactive "P")
(calc-wrapper
(calc-set-simplify-mode 'units arg
"Units simplification occurs by default.")))
"Units simplification occurs by default")))
(defun calc-auto-recompute (arg)
(interactive "P")
@ -556,8 +566,8 @@
(calc-change-mode 'calc-auto-recompute arg nil t)
(calc-refresh-evaltos)
(message (if calc-auto-recompute
"Automatically recomputing `=>' forms when necessary."
"Not recomputing `=>' forms automatically."))))
"Automatically recomputing `=>' forms when necessary"
"Not recomputing `=>' forms automatically"))))
(defun calc-working (n)
(interactive "P")
@ -571,89 +581,89 @@
((eq n 0) (calc-change-mode 'calc-display-working-message nil))
((eq n 1) (calc-change-mode 'calc-display-working-message t)))
(cond ((eq calc-display-working-message t)
(message "\"Working...\" messages enabled."))
(message "\"Working...\" messages enabled"))
(calc-display-working-message
(message "Detailed \"Working...\" messages enabled."))
(message "Detailed \"Working...\" messages enabled"))
(t
(message "\"Working...\" messages disabled.")))))
(message "\"Working...\" messages disabled")))))
(defun calc-always-load-extensions ()
(interactive)
(calc-wrapper
(if (setq calc-always-load-extensions (not calc-always-load-extensions))
(message "Always loading extensions package.")
(message "Loading extensions package on demand only."))))
(message "Always loading extensions package")
(message "Loading extensions package on demand only"))))
(defun calc-matrix-left-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just nil t)
(message "Matrix elements will be left-justified in columns.")))
(message "Matrix elements will be left-justified in columns")))
(defun calc-matrix-center-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just 'center t)
(message "Matrix elements will be centered in columns.")))
(message "Matrix elements will be centered in columns")))
(defun calc-matrix-right-justify ()
(interactive)
(calc-wrapper
(calc-change-mode 'calc-matrix-just 'right t)
(message "Matrix elements will be right-justified in columns.")))
(message "Matrix elements will be right-justified in columns")))
(defun calc-full-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-full-vectors n t t)
"Displaying long vectors in full."
"Displaying long vectors in [a, b, c, ..., z] notation."))))
"Displaying long vectors in full"
"Displaying long vectors in [a, b, c, ..., z] notation"))))
(defun calc-full-trail-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-full-trail-vectors n nil t)
"Recording long vectors in full."
"Recording long vectors in [a, b, c, ..., z] notation."))))
"Recording long vectors in full"
"Recording long vectors in [a, b, c, ..., z] notation"))))
(defun calc-break-vectors (n)
(interactive "P")
(calc-wrapper
(message (if (calc-change-mode 'calc-break-vectors n t t)
"Displaying vector elements one-per-line."
"Displaying vector elements all on one line."))))
"Displaying vector elements one-per-line"
"Displaying vector elements all on one line"))))
(defun calc-vector-commas ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-commas (if calc-vector-commas nil ",") t)
(message "Separating vector elements with \",\".")
(message "Separating vector elements with spaces."))))
(message "Separating vector elements with \",\"")
(message "Separating vector elements with spaces"))))
(defun calc-vector-brackets ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "[]") nil "[]") t)
(message "Surrounding vectors with \"[]\".")
(message "Not surrounding vectors with brackets."))))
(message "Surrounding vectors with \"[]\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-vector-braces ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "{}") nil "{}") t)
(message "Surrounding vectors with \"{}\".")
(message "Not surrounding vectors with brackets."))))
(message "Surrounding vectors with \"{}\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-vector-parens ()
(interactive)
(calc-wrapper
(if (calc-change-mode 'calc-vector-brackets
(if (equal calc-vector-brackets "()") nil "()") t)
(message "Surrounding vectors with \"()\".")
(message "Not surrounding vectors with brackets."))))
(message "Surrounding vectors with \"()\"")
(message "Not surrounding vectors with brackets"))))
(defun calc-matrix-brackets (arg)
(interactive "sCode letters (R, O, C, P): ")