Improve the implementation, documentation of #'labels, #'flet. lisp/ChangeLog addition: 2011-09-07 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el: * bytecomp.el (for-effect): Move this earlier in the file, it's referenced in byte-compile-initial-macro-environment. * bytecomp.el (byte-compile-initial-macro-environment): In the byte-compile-macro-environment definition for #'labels, put off the compiling the lambda bodies until the point where the rest of the form is being compiled, allowing the lambda bodies to access appropriate values for byte-compile-bound-variables, and reducing excessive warning about free variables. Add a byte-compile-macro-environment definition for #'flet. This modifies byte-compile-function-environment appropriately, and warns about bindings of functions that have macro definitions in the current environment, about functions that have byte codes, and about functions that have byte-compile methods (which may not do what the user wants at runtime). * bytecomp.el (byte-compile-funcall): If FUNCTION is constant, call #'byte-compile-callargs-warn if that's appropriate, giving warnings about problems with calling functions bound with #'labels. * cl-macs.el: * cl-macs.el (flet): Mention the main difference from Common Lisp, that the bindings are dynamic, not lexical. Counsel the use of #'labels, not #'flet, for this and other reasons. Explain the limited single use case for #'flet. Cross-reference to bytecomp.el in a comment. * cl-macs.el (labels): Go into detail on which functions may be called from where. Explain how to access the function definition of a label within FORM. Add a comment cross-referencing to bytecomp.el. man/ChangeLog addition: 2011-09-07 Aidan Kehoe <kehoea@parhasard.net> * cl.texi (Function Bindings): Move #'labels first, describe it in more detail, explaining that it is to be preferred over #'flet, and explaining why. Explain that dynamic bindings with #'flet will also not work when functions are accessed through their bytecodes.

/* Sound functions.
   Copyright (C) 2000 Free Software Foundation, Inc.
   Copyright (C) 2001 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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: Not in FSF. */

/* This file Mule-ized by Ben Wing, 5-15-01. */

#include "buffer.h"

/* Defined in *play.c */
void play_sound_file (Extbyte *name, int volume);
void nt_play_sound_file (Lisp_Object name, int volume);
int play_sound_data (Binbyte *data, int length, int volume);

# define sound_perror(string)						 \
do {									 \
  Ibyte *errmess;							 \
  Ibyte *string_int;							 \
  GET_STRERROR (errmess, errno);					 \
  string_int = EXTERNAL_TO_ITEXT (string, Qerror_message_encoding);	 \
  warn_when_safe (Qsound, Qerror, "audio: %s, %s", string_int, errmess); \
} while (0)
# define sound_warn(string)					\
do {								\
  Ibyte *string_int;						\
  string_int = EXTERNAL_TO_ITEXT (GETTEXT (string), Qerror_message_encoding);		\
  warn_when_safe (Qsound, Qwarning, "audio: %s", string_int);	\
} while (0)