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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.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 07 Sep 2011 16:26:45 +0100
parents 308d34e9f07d
children
line wrap: on
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/* Emacs shell widget external header file.
   Copyright (C) 1994 Sun Microsystems, Inc.

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. */

/* Written by Ben Wing, May, 1994. */

#ifndef INCLUDED_EmacsShell_h_
#define INCLUDED_EmacsShell_h_

#ifndef XtNwidthCells
#define XtNwidthCells "widthCells"
#endif
#ifndef XtCWidthCells
#define XtCWidthCells "WidthCells"
#endif

#ifndef XtNheightCells
#define XtNheightCells "heightCells"
#endif
#ifndef XtCHeightCells
#define XtCHeightCells "HeightCells"
#endif

#ifndef XtNminWidthCells
#define XtNminWidthCells "minWidthCells"
#endif
#ifndef XtCMinWidthCells
#define XtCMinWidthCells "MinWidthCells"
#endif

#ifndef XtNminHeightCells
#define XtNminHeightCells "minHeightCells"
#endif
#ifndef XtCMinHeightCells
#define XtCMinHeightCells "MinHeightCells"
#endif

typedef struct _TopLevelEmacsShellClassRec *TopLevelEmacsShellWidgetClass;
typedef struct _TopLevelEmacsShellRec *TopLevelEmacsShellWidget;
extern WidgetClass topLevelEmacsShellWidgetClass;

typedef struct _TransientEmacsShellClassRec *TransientEmacsShellWidgetClass;
typedef struct _TransientEmacsShellRec *TransientEmacsShellWidget;
extern WidgetClass transientEmacsShellWidgetClass;

void EmacsShellUpdateSizeHints (Widget gw);
void TopLevelEmacsShellUpdateSizeHints (Widget gw);
void TransientEmacsShellUpdateSizeHints (Widget gw);
void EmacsShellSetSizeUserSpecified (Widget gw);
void EmacsShellSetPositionUserSpecified (Widget gw);
void EmacsShellSmashIconicHint (Widget shell, int iconic_p);

#endif /* INCLUDED_EmacsShell_h_ */