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Support #!, to allow XEmacs to be called as a script interpreter. ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * Makefile.in.in (SHEBANG_PROGNAME): New variable; a symbol link to the XEmacs binary to tell it it should read a script from stdin. * configure.ac (XE_EXPAND_VARIABLE): Set SHEBANG_PROGNAME. * configure: Regenerate. src/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * config.h.in: Add SHEBANG_PROGNAME. * emacs.c (main_1): If we've been called using SHEBANG_PROGNAME, rewrite our arguments to add a --script argument. Also, handle the --script argument by setting noninteractive and vanilla. * lread.c (Fload_internal): If the first two characters of a file are #!, replace them with ;! before they get to the Lisp reader. lisp/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * startup.el (command-line-do-script): New. (command-switch-alist): Use command-line-do-script. New argument, compatible with GNU; --script or -script says "treat the following argument as a file to load in batch mode". man/ChangeLog addition: 2008-01-20 Aidan Kehoe <kehoea@parhasard.net> * xemacs/cmdargs.texi (Command Switches): Describe --script, -script.
author Aidan Kehoe <kehoea@parhasard.net>
date Sun, 20 Jan 2008 19:53:54 +0100
parents 576fb035e263
children 308d34e9f07d
line wrap: on
line source

;;; float-sup.el --- detect absence of floating-point support in XEmacs runtime

;; Copyright (C) 1985-7, 1997 Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: internal, dumped

;; This file is part of XEmacs.

;; XEmacs is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; XEmacs is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with XEmacs; see the file COPYING.  If not, write to the Free
;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
;; 02111-1307, USA.

;;; Synched up with: FSF 19.34.

;;; Code:

;; This file is dumped with XEmacs.

;; Provide a meaningful error message if we are running on
;; bare (non-float) emacs.
;; Can't test for 'floatp since that may be defined by float-imitation
;; packages like float.el in this very directory.

;; XEmacs change
(or (featurep 'lisp-float-type)
    (error "Floating point was disabled at compile time"))

;; define pi and e via math-lib calls. (much less prone to killer typos.)
(defconst pi (* 4 (atan 1)) "The value of Pi (3.1415926...)")
(defconst e (exp 1) "The value of e (2.7182818...)")

;; Careful when editing this file ... typos here will be hard to spot.
;; (defconst pi       3.14159265358979323846264338327
;;  "The value of Pi (3.14159265358979323846264338327...)")

(defconst degrees-to-radians (/ pi 180.0)
  "Degrees to radian conversion constant")
(defconst radians-to-degrees (/ 180.0 pi)
  "Radian to degree conversion constant")

;; these expand to a single multiply by a float when byte compiled

(defmacro degrees-to-radians (x)
  "Convert ARG from degrees to radians."
  (list '* (/ pi 180.0) x))
(defmacro radians-to-degrees (x)
  "Convert ARG from radians to degrees."
  (list '* (/ 180.0 pi) x))

;; Provided in C code in XEmacs
;; (provide 'lisp-float-type)

;;; float-sup.el ends here