Improve the lexical scoping in #'block, #'return-from. lisp/ChangeLog addition: 2011-02-07 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el: * bytecomp.el (byte-compile-initial-macro-environment): Shadow `block', `return-from' here, we implement them differently when byte-compiling. * bytecomp.el (byte-compile-active-blocks): New. * bytecomp.el (byte-compile-block-1): New. * bytecomp.el (byte-compile-return-from-1): New. * bytecomp.el (return-from-1): New. * bytecomp.el (block-1): New. These are two aliases that exist to have their own associated byte-compile functions, which functions implement `block' and `return-from'. * cl-extra.el (cl-macroexpand-all): Fix a bug here when macros in the environment have been compiled. * cl-macs.el (block): * cl-macs.el (return): * cl-macs.el (return-from): Be more careful about lexical scope in these macros. * cl.el: * cl.el ('cl-block-wrapper): Removed. * cl.el ('cl-block-throw): Removed. These aren't needed in code generated by this XEmacs. They shouldn't be needed in code generated by XEmacs 21.4, but if it turns out the packages do need them, we can put them back. 2011-01-30 Mike Sperber <mike@xemacs.org> * font-lock.el (font-lock-fontify-pending-extents): Don't fail if `font-lock-mode' is unset, which can happen in the middle of `revert-buffer'. 2011-01-23 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (delete): * cl-macs.el (delq): * cl-macs.el (remove): * cl-macs.el (remq): Don't use the compiler macro if these functions were given the wrong number of arguments, as happens in lisp-tests.el. * cl-seq.el (remove, remq): Removed. I added these to subr.el, and forgot to remove them from here. 2011-01-22 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el (byte-compile-setq, byte-compile-set): Remove kludge allowing keywords' values to be set, all the code that does that is gone. * cl-compat.el (elt-satisfies-test-p): * faces.el (set-face-parent): * faces.el (face-doc-string): * gtk-font-menu.el: * gtk-font-menu.el (gtk-reset-device-font-menus): * msw-font-menu.el: * msw-font-menu.el (mswindows-reset-device-font-menus): * package-get.el (package-get-installedp): * select.el (select-convert-from-image-data): * sound.el: * sound.el (load-sound-file): * x-font-menu.el (x-reset-device-font-menus-core): Don't quote keywords, they're self-quoting, and the win from backward-compatibility is sufficiently small now that the style problem overrides it. 2011-01-22 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (block, return-from): Require that NAME be a symbol in these macros, as always documented in the #'block docstring and as required by Common Lisp. * descr-text.el (unidata-initialize-unihan-database): Correct the use of non-symbols in #'block and #'return-from in this function. 2011-01-15 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (concatenate): Accept more complicated TYPEs in this function, handing the sequences over to #'coerce if we don't understand them here. * cl-macs.el (inline): Don't proclaim #'concatenate as inline, its compiler macro is more useful than doing that. 2011-01-11 Aidan Kehoe <kehoea@parhasard.net> * subr.el (delete, delq, remove, remq): Move #'remove, #'remq here, they don't belong in cl-seq.el; move #'delete, #'delq here from fns.c, implement them in terms of #'delete*, allowing support for sequences generally. * update-elc.el (do-autoload-commands): Use #'delete*, not #'delq here, now the latter's no longer dumped. * cl-macs.el (delete, delq): Add compiler macros transforming #'delete and #'delq to #'delete* calls. 2011-01-10 Aidan Kehoe <kehoea@parhasard.net> * dialog.el (make-dialog-box): Correct a misplaced parenthesis here, thank you Mats Lidell in 87zkr9gqrh.fsf@mail.contactor.se ! 2011-01-02 Aidan Kehoe <kehoea@parhasard.net> * dialog.el (make-dialog-box): * list-mode.el (display-completion-list): These functions used to use cl-parsing-keywords; change them to use defun* instead, fixing the build. (Not sure what led to me not including this change in d1b17a33450b!) 2011-01-02 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (define-star-compiler-macros): Make sure the form has ITEM and LIST specified before attempting to change to calls with explicit tests; necessary for some tests in lisp-tests.el to compile correctly. (stable-union, stable-intersection): Add compiler macros for these functions, in the same way we do for most of the other functions in cl-seq.el. 2011-01-01 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (dolist, dotimes, do-symbols, macrolet) (symbol-macrolet): Define these macros with defmacro* instead of parsing the argument list by hand, for the sake of style and readability; use backquote where appropriate, instead of calling #'list and and friends, for the same reason. 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * x-misc.el (device-x-display): Provide this function, documented in the Lispref for years, but not existing previously. Thank you Julian Bradfield, thank you Jeff Mincy. 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * cl-seq.el: Move the heavy lifting from this file to C. Dump the cl-parsing-keywords macro, but don't use defun* for the functions we define that do take keywords, dynamic scope lossage makes that not practical. * subr.el (sort, fillarray): Move these aliases here. (map-plist): #'nsublis is now built-in, but at this point #'eql isn't necessarily available as a test; use #'eq. * obsolete.el (cl-delete-duplicates): Make this available for old compiler macros and old code. (memql): Document that this is equivalent to #'member*, and worse. * cl.el (adjoin, subst): Removed. These are in C. 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * simple.el (assoc-ignore-case): Remove a duplicate definition of this function (it's already in subr.el). * iso8859-1.el (char-width): On non-Mule, make this function equivalent to that produced by (constantly 1), but preserve its docstring. * subr.el (subst-char-in-string): Define this in terms of #'substitute, #'nsubstitute. (string-width): Define this using #'reduce and #'char-width. (char-width): Give this a simpler definition, it makes far more sense to check for mule at load time and redefine, as we do in iso8859-1.el. (store-substring): Implement this in terms of #'replace, now #'replace is cheap. 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * update-elc.el (lisp-files-needed-for-byte-compilation) (lisp-files-needing-early-byte-compilation): cl-macs belongs in the former, not the latter, it is as fundamental as bytecomp.el. 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * cl.el: Provde the Common Lisp program-error, type-error as error symbols. This doesn't nearly go far enough for anyone using the Common Lisp errors. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (delete-duplicates): If the form has an incorrect number of arguments, don't attempt a compiler macroexpansion. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (cl-safe-expr-p): Forms that start with the symbol lambda are also safe. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (= < > <= >=): For these functions' compiler macros, the optimisation is safe even if the first and the last arguments have side effects, since they're only used the once. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (inline-side-effect-free-compiler-macros): Unroll a loop here at macro-expansion time, so these compiler macros are compiled. Use #'eql instead of #'eq in a couple of places for better style. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (notany, notevery): Avoid some dynamic scope stupidity with local variable names in these functions, when they weren't prefixed with cl-; go into some more detail in the doc strings. 2010-12-29 Aidan Kehoe <kehoea@parhasard.net> * byte-optimize.el (side-effect-free-fns): #'remove, #'remq are free of side-effects. (side-effect-and-error-free-fns): Drop dot, dot-marker from the list. 2010-11-17 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (coerce): In the argument list, name the first argument OBJECT, not X; the former name was always used in the doc string and is clearer. Handle vector type specifications which include the length of the target sequence, error if there's a mismatch. * cl-macs.el (cl-make-type-test): Handle type specifications starting with the symbol 'eql. 2010-11-14 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (eql): Don't remove the byte-compile property of this symbol. That was necessary to override a bug in bytecomp.el where #'eql was confused with #'eq, which bug we no longer have. If neither expression is constant, don't attempt to handle the expression in this compiler macro, leave it to byte-compile-eql, which produces better code anyway. * bytecomp.el (eq): #'eql is not the function associated with the byte-eq byte code. (byte-compile-eql): Add an explicit compile method for this function, for cases where the cl-macs compiler macro hasn't reduced it to #'eq or #'equal. 2010-10-25 Aidan Kehoe <kehoea@parhasard.net> Add compiler macros and compilation sanity-checking for various functions that take keywords. * byte-optimize.el (side-effect-free-fns): #'symbol-value is side-effect free and not error free. * bytecomp.el (byte-compile-normal-call): Check keyword argument lists for sanity; store information about the positions where keyword arguments start using the new byte-compile-keyword-start property. * cl-macs.el (cl-const-expr-val): Take a new optional argument, cl-not-constant, defaulting to nil, in this function; return it if the expression is not constant. (cl-non-fixnum-number-p): Make this into a separate function, we want to pass it to #'every. (eql): Use it. (define-star-compiler-macros): Use the same code to generate the member*, assoc* and rassoc* compiler macros; special-case some code in #'add-to-list in subr.el. (remove, remq): Add compiler macros for these two functions, in preparation for #'remove being in C. (define-foo-if-compiler-macros): Transform (remove-if-not ...) calls to (remove ... :if-not) at compile time, which will be a real win once the latter is in C. (define-substitute-if-compiler-macros) (define-subst-if-compiler-macros): Similarly for these functions. (delete-duplicates): Change this compiler macro to use #'plists-equal; if we don't have information about the type of SEQUENCE at compile time, don't bother attempting to inline the call, the function will be in C soon enough. (equalp): Remove an old commented-out compiler macro for this, if we want to see it it's in version control. (subst-char-in-string): Transform this to a call to nsubstitute or nsubstitute, if that is appropriate. * cl.el (ldiff): Don't call setf here, this makes for a load-time dependency problem in cl-macs.el 2010-06-14 Stephen J. Turnbull <stephen@xemacs.org> * term/vt100.el: Refer to XEmacs, not GNU Emacs, in permissions. * term/bg-mouse.el: * term/sup-mouse.el: Put copyright notice in canonical "Copyright DATE AUTHOR" form. Refer to XEmacs, not GNU Emacs, in permissions. * site-load.el: Add permission boilerplate. * mule/canna-leim.el: * alist.el: Refer to XEmacs, not APEL/this program, in permissions. * mule/canna-leim.el: Remove my copyright, I've assigned it to the FSF. 2010-06-14 Stephen J. Turnbull <stephen@xemacs.org> * gtk.el: * gtk-widget-accessors.el: * gtk-package.el: * gtk-marshal.el: * gtk-compose.el: * gnome.el: Add copyright notice based on internal evidence. 2010-06-14 Stephen J. Turnbull <stephen@xemacs.org> * easymenu.el: Add reference to COPYING to permission notice. * gutter.el: * gutter-items.el: * menubar-items.el: Fix typo "Xmacs" in permissions notice. 2010-06-14 Stephen J. Turnbull <stephen@xemacs.org> * auto-save.el: * font.el: * fontconfig.el: * mule/kinsoku.el: Add "part of XEmacs" text to permission notice. 2010-10-14 Aidan Kehoe <kehoea@parhasard.net> * byte-optimize.el (side-effect-free-fns): * cl-macs.el (remf, getf): * cl-extra.el (tailp, cl-set-getf, cl-do-remf): * cl.el (ldiff, endp): Tighten up Common Lisp compatibility for #'ldiff, #'endp, #'tailp; add circularity checking for the first two. #'cl-set-getf and #'cl-do-remf were Lisp implementations of #'plist-put and #'plist-remprop; change the names to aliases, changes the macros that use them to using #'plist-put and #'plist-remprop directly. 2010-10-12 Aidan Kehoe <kehoea@parhasard.net> * abbrev.el (fundamental-mode-abbrev-table, global-abbrev-table): Create both these abbrev tables using the usual #'define-abbrev-table calls, rather than attempting to special-case them. * cl-extra.el: Force cl-macs to be loaded here, if cl-extra.el is being loaded interpreted. Previously other, later files would redundantly call (load "cl-macs") when interpreted, it's more reasonable to do it here, once. * cmdloop.el (read-quoted-char-radix): Use defcustom here, we don't have any dump-order dependencies that would prevent that. * custom.el (eval-when-compile): Don't load cl-macs when interpreted or when byte-compiling, rely on cl-extra.el in the former case and the appropriate entry in bytecomp-load-hook in the latter. Get rid of custom-declare-variable-list, we have no dump-time dependencies that would require it. * faces.el (eval-when-compile): Don't load cl-macs when interpreted or when byte-compiling. * packages.el: Remove some inaccurate comments. * post-gc.el (cleanup-simple-finalizers): Use #'delete-if-not here, now the order of preloaded-file-list has been changed to make it available. * subr.el (custom-declare-variable-list): Remove. No need for it. Also remove a stub define-abbrev-table from this file, given the current order of preloaded-file-list there's no need for it. 2010-10-10 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el (byte-compile-constp) Forms quoted with FUNCTION are also constant. (byte-compile-initial-macro-environment): In #'the, if FORM is constant and does not match TYPE, warn at byte-compile time. 2010-10-10 Aidan Kehoe <kehoea@parhasard.net> * backquote.el (bq-vector-contents, bq-list*): Remove; the former is equivalent to (append VECTOR nil), the latter to (list* ...). (bq-process-2): Use (append VECTOR nil) instead of using #'bq-vector-contents to convert to a list. (bq-process-1): Now we use list* instead of bq-list * subr.el (list*): Moved from cl.el, since it is now required to be available the first time a backquoted form is encountered. * cl.el (list*): Move to subr.el. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * test-harness.el (Check-Message): Add an omitted comma here, thank you the buildbot. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * hash-table.el (hash-table-key-list, hash-table-value-list) (hash-table-key-value-alist, hash-table-key-value-plist): Remove some useless #'nreverse calls in these files; our hash tables have no order, it's not helpful to pretend they do. * behavior.el (read-behavior): Do the same in this file, in some code evidently copied from hash-table.el. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * info.el (Info-insert-dir): * format.el (format-deannotate-region): * files.el (cd, save-buffers-kill-emacs): Use #'some, #'every and related functions for applying boolean operations to lists, instead of rolling our own ones that cons and don't short-circuit. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el (byte-compile-initial-macro-environment): * cl-macs.el (the): Rephrase the docstring, make its implementation when compiling files a little nicer. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * descr-text.el (unidata-initialize-unicodedata-database) (unidata-initialize-unihan-database, describe-char-unicode-data) (describe-char-unicode-data): Wrap calls to the database functions with (with-fboundp ...), avoiding byte compile warnings on builds without support for the database functions. (describe-char): (reduce #'max ...), not (apply #'max ...), no need to cons needlessly. (describe-char): Remove a redundant lambda wrapping #'extent-properties. (describe-char-unicode-data): Call #'nsubst when replacing "" with nil in the result of #'split-string, instead of consing inside mapcar. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * x-faces.el (x-available-font-sizes): * specifier.el (let-specifier): * package-ui.el (pui-add-required-packages): * msw-faces.el (mswindows-available-font-sizes): * modeline.el (modeline-minor-mode-menu): * minibuf.el (minibuf-directory-files): Replace the O2N (delq nil (mapcar (lambda (W) (and X Y)) Z)) with the ON (mapcan (lambda (W) (and X (list Y))) Z) in these files. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (= < > <= >=): When these functions are handed more than two arguments, and those arguments have no side effects, transform to a series of two argument calls, avoiding funcall in the byte-compiled code. * mule/mule-cmds.el (finish-set-language-environment): Take advantage of this change in a function called 256 times at startup. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el (byte-compile-function-form, byte-compile-quote) (byte-compile-quote-form): Warn at compile time, and error at runtime, if a (quote ...) or a (function ...) form attempts to quote more than one object. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * byte-optimize.el (byte-optimize-apply): Transform (apply 'nconc (mapcar ...)) to (mapcan ...); warn about use of the first idiom. * update-elc.el (do-autoload-commands): * packages.el (packages-find-package-library-path): * frame.el (frame-list): * extents.el (extent-descendants): * etags.el (buffer-tag-table-files): * dumped-lisp.el (preloaded-file-list): * device.el (device-list): * bytecomp-runtime.el (proclaim-inline, proclaim-notinline) Use #'mapcan, not (apply #'nconc (mapcar ...) in all these files. * bytecomp-runtime.el (eval-when-compile, eval-and-compile): In passing, mention that these macros also evaluate the body when interpreted. tests/ChangeLog addition: 2011-02-07 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: Test lexical scope for `block', `return-from'; add a Known-Bug-Expect-Failure for a contorted example that fails when byte-compiled.

/* Stream device functions.
   Copyright (C) 1995 Free Software Foundation, Inc.
   Copyright (C) 1996, 2001, 2002, 2003 Ben Wing.

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: Not in FSF. */

/* This file has been Mule-ized. */

/* Written by Ben Wing. */

#include <config.h>
#include "lisp.h"

#include "device-impl.h"
#include "events.h"
#include "frame-impl.h"
#include "redisplay.h"
#include "sysdep.h"
#include "window.h"

#include "console-stream-impl.h"
#include "console-tty.h"

#include "sysfile.h"

DEFINE_CONSOLE_TYPE (stream);

Lisp_Object Vterminal_console;
Lisp_Object Vterminal_device;
Lisp_Object Vterminal_frame;

Lisp_Object Vstdio_str;

static const struct memory_description stream_console_data_description_1 [] = {
  { XD_LISP_OBJECT, offsetof (struct stream_console, instream) },
  { XD_END }
};

#ifdef NEW_GC
DEFINE_DUMPABLE_INTERNAL_LISP_OBJECT ("stream-console", stream_console,
				      0, stream_console_data_description_1,
				      Lisp_Stream_Console);
#else /* not NEW_GC */
const struct sized_memory_description stream_console_data_description = {
  sizeof (struct stream_console), stream_console_data_description_1
};
#endif /* not NEW_GC */

static void
stream_init_console (struct console *con, Lisp_Object UNUSED (params))
{
  Lisp_Object tty = CONSOLE_CONNECTION (con);
  struct stream_console *stream_con;

#ifdef NEW_GC
  if (CONSOLE_STREAM_DATA (con) == NULL)
    CONSOLE_STREAM_DATA (con) =
      XSTREAM_CONSOLE (ALLOC_NORMAL_LISP_OBJECT (stream_console));
#else /* not NEW_GC */
  if (CONSOLE_STREAM_DATA (con) == NULL)
    CONSOLE_STREAM_DATA (con) = xnew_and_zero (struct stream_console);
#endif /* not NEW_GC */

  stream_con = CONSOLE_STREAM_DATA (con);

  stream_con->instream  = Qnil;

  /* Open the specified console */
  if (NILP (tty) || internal_equal (tty, Vstdio_str, 0))
    {
      stream_con->in  = stdin;
      stream_con->out = stdout;
      stream_con->err = stderr;
    }
  else
    {
      CHECK_STRING (tty);
      stream_con->in = stream_con->out = stream_con->err =
	/* #### We don't currently do coding-system translation on
	   this descriptor. */
	qxe_fopen (XSTRING_DATA (tty), READ_PLUS_TEXT);
      if (!stream_con->in)
	signal_error (Qio_error, "Unable to open tty", tty);
    }
}

static void
stream_init_device (struct device *d, Lisp_Object UNUSED (params))
{
  struct console *con = XCONSOLE (DEVICE_CONSOLE (d));

  DEVICE_INFD  (d) = fileno (CONSOLE_STREAM_DATA (con)->in);
  DEVICE_OUTFD (d) = fileno (CONSOLE_STREAM_DATA (con)->out);
  init_baud_rate (d);
  init_one_device (d);
}

static int
stream_initially_selected_for_input (struct console *UNUSED (con))
{
  return noninteractive && initialized;
}

extern int stdout_needs_newline;

static void
stream_delete_console (struct console *con)
{
  struct stream_console *stream_con = CONSOLE_STREAM_DATA (con);
  if (stream_con)
    {
      if (/* stream_con->needs_newline */
	  stdout_needs_newline) /* #### clean this up */
	{
	  fputc ('\n', stream_con->out);
	  fflush (stream_con->out);
	}
      if (stream_con->in != stdin)
	retry_fclose (stream_con->in);

#ifndef NEW_GC
      xfree (stream_con);
#endif /* not NEW_GC */
      CONSOLE_STREAM_DATA (con) = NULL;
    }
}

Lisp_Object
stream_semi_canonicalize_console_connection (Lisp_Object connection,
					     Error_Behavior UNUSED (errb))
{
  return NILP (connection) ? Vstdio_str : connection;
}

Lisp_Object
stream_canonicalize_console_connection (Lisp_Object connection,
					Error_Behavior errb)
{
  if (NILP (connection) || internal_equal (connection, Vstdio_str, 0))
    return Vstdio_str;

  if (!ERRB_EQ (errb, ERROR_ME))
    {
      if (!STRINGP (connection))
	return Qunbound;
    }
  else
    CHECK_STRING (connection);

  return Ffile_truename (connection, Qnil);
}

Lisp_Object
stream_semi_canonicalize_device_connection (Lisp_Object connection,
					    Error_Behavior errb)
{
  return stream_semi_canonicalize_console_connection (connection, errb);
}

Lisp_Object
stream_canonicalize_device_connection (Lisp_Object connection,
				       Error_Behavior errb)
{
  return stream_canonicalize_console_connection (connection, errb);
}


static void
stream_init_frame_1 (struct frame *f, Lisp_Object UNUSED (props),
		     int frame_name_is_defaulted)
{
#if 0
  struct device *d = XDEVICE (FRAME_DEVICE (f));
  if (!NILP (DEVICE_FRAME_LIST (d)))
    invalid_operation ("Only one frame allowed on stream devices", Qunbound);
#endif
  if (frame_name_is_defaulted)
    f->name = build_ascstring ("stream");
  f->height = 80;
  f->width = 24;
  f->visible = 0; /* so redisplay doesn't try to do anything */
}


static int
stream_text_width (struct window *UNUSED (w),
		   struct face_cachel *UNUSED (cachel),
		   const Ichar *UNUSED (str), Charcount len)
{
  return len;
}

static int
stream_left_margin_width (struct window *UNUSED (w))
{
  return 0;
}

static int
stream_right_margin_width (struct window *UNUSED (w))
{
  return 0;
}

static int
stream_divider_height (void)
{
  return 1;
}

static int
stream_eol_cursor_width (void)
{
  return 1;
}

/* We used to try and check for redisplaying on stream devices (e.g. in
   redisplay_device(), and beg out if so.  However, we didn't always manage
   completely.  Now we do manage completely, and to verify this we abort if
   we try to display a stream device.  This might fix some crashes I've
   been getting in pdump -- the only difference between crash and non-crash
   is a few changes to the redisplay critical-section handling. */

static void
stream_window_output_begin (struct window *UNUSED (w))
{
  ABORT ();
}

static void
stream_window_output_end (struct window *UNUSED (w))
{
  ABORT ();
}

static void
stream_frame_output_begin (struct frame *UNUSED (f))
{
  ABORT ();
}

static void
stream_frame_output_end (struct frame *UNUSED (f))
{
  ABORT ();
}

static void
stream_output_display_block (struct window *UNUSED (w),
			     struct display_line *UNUSED (dl),
			     int UNUSED (block), int UNUSED (start),
			     int UNUSED (end), int UNUSED (start_pixpos),
			     int UNUSED (cursor_start),
			     int UNUSED (cursor_width),
			     int UNUSED (cursor_height))
{
  ABORT ();
}

static void
stream_clear_region (Lisp_Object UNUSED (window), struct device* UNUSED (d),
		     struct frame *UNUSED (f), face_index UNUSED (findex),
		     int UNUSED (x), int UNUSED (y), int UNUSED (width),
		     int UNUSED (height), Lisp_Object UNUSED (fcolor),
		     Lisp_Object UNUSED (bcolor),
		     Lisp_Object UNUSED (background_pixmap),
		     Lisp_Object UNUSED (background_placement))
{
  ABORT ();
}

static int
stream_flash (struct device *UNUSED (d))
{
  return 0; /* sorry can't do it */
}

static void
stream_ring_bell (struct device *d, int UNUSED (volume), int UNUSED (pitch),
		  int UNUSED (duration))
{
  struct console *c = XCONSOLE (DEVICE_CONSOLE (d));
  /* Don't output ^G when not a TTY -- in particular, under MS Windows, ^G
     is interpreted as bell by the console, but not when running under
     VC++.  Probably this would be the same under Unix. */
  if (isatty (fileno (CONSOLE_STREAM_DATA (c)->out)))
    {
      fputc (07, CONSOLE_STREAM_DATA (c)->out);
      fflush (CONSOLE_STREAM_DATA (c)->out);
    }
}


/************************************************************************/
/*                            initialization                            */
/************************************************************************/

void
console_type_create_stream (void)
{
  INITIALIZE_CONSOLE_TYPE (stream, "stream", "console-stream-p");

  /* console methods */
  CONSOLE_HAS_METHOD (stream, init_console);
  CONSOLE_HAS_METHOD (stream, initially_selected_for_input);
  CONSOLE_HAS_METHOD (stream, delete_console);
  CONSOLE_HAS_METHOD (stream, canonicalize_console_connection);
  CONSOLE_HAS_METHOD (stream, canonicalize_device_connection);
  CONSOLE_HAS_METHOD (stream, semi_canonicalize_console_connection);
  CONSOLE_HAS_METHOD (stream, semi_canonicalize_device_connection);

  /* device methods */
  CONSOLE_HAS_METHOD (stream, init_device);

  /* frame methods */
  CONSOLE_HAS_METHOD (stream, init_frame_1);

  /* redisplay methods */
  CONSOLE_HAS_METHOD (stream, text_width);
  CONSOLE_HAS_METHOD (stream, left_margin_width);
  CONSOLE_HAS_METHOD (stream, right_margin_width);
  CONSOLE_HAS_METHOD (stream, divider_height);
  CONSOLE_HAS_METHOD (stream, eol_cursor_width);
  CONSOLE_HAS_METHOD (stream, window_output_begin);
  CONSOLE_HAS_METHOD (stream, window_output_end);
  CONSOLE_HAS_METHOD (stream, frame_output_begin);
  CONSOLE_HAS_METHOD (stream, frame_output_end);
  CONSOLE_HAS_METHOD (stream, output_display_block);
  CONSOLE_HAS_METHOD (stream, clear_region);
  CONSOLE_HAS_METHOD (stream, flash);
  CONSOLE_HAS_METHOD (stream, ring_bell);
}

void
reinit_console_type_create_stream (void)
{
  REINITIALIZE_CONSOLE_TYPE (stream);
}

void
vars_of_console_stream (void)
{
  DEFVAR_LISP ("terminal-console", &Vterminal_console /*
The initial console object, which represents XEmacs' stdout.
*/ );
  Vterminal_console = Qnil;

  DEFVAR_LISP ("terminal-device", &Vterminal_device /*
The initial device object, which represents XEmacs' stdout.
*/ );
  Vterminal_device = Qnil;

  DEFVAR_LISP ("terminal-frame", &Vterminal_frame /*
The initial frame object, which represents XEmacs' stdout.
*/ );
  Vterminal_frame = Qnil;

  /* Moved from console-tty.c */
  Vstdio_str = build_ascstring ("stdio");
  staticpro (&Vstdio_str);
}

#ifndef PDUMP
void
init_console_stream (int UNUSED (reinit))
{
  /* This function can GC */
  if (!initialized)
    {
      Vterminal_device = Fmake_device (Qstream, Qnil, Qnil);
      Vterminal_console = Fdevice_console (Vterminal_device);
      Vterminal_frame = Fmake_frame (Qnil, Vterminal_device);
      minibuf_window = XFRAME (Vterminal_frame)->minibuffer_window;
    }
  else
    {
      /* Re-initialize the FILE fields of the console. */
      stream_init_console (XCONSOLE (Vterminal_console), Qnil);
      if (noninteractive)
        event_stream_select_console (XCONSOLE (Vterminal_console));
    }
}

#else

void
init_console_stream (int reinit)
{
  /* This function can GC */
  if (!reinit)
    {
      Vterminal_device = Fmake_device (Qstream, Qnil, Qnil);
      Vterminal_console = Fdevice_console (Vterminal_device);
      Vterminal_frame = Fmake_frame (Qnil, Vterminal_device);
      minibuf_window = XFRAME (Vterminal_frame)->minibuffer_window;
    }
  if (initialized)
    {
      stream_init_console (XCONSOLE (Vterminal_console), Qnil);
      if (noninteractive)
	event_stream_select_console (XCONSOLE (Vterminal_console));
    }
}
#endif