annotate modules/README @ 5562:855b667dea13

Drop cl-macro-environment in favour of byte-compile-macro-environment. lisp/ChangeLog addition: 2011-09-04 Aidan Kehoe <kehoea@parhasard.net> * bytecomp-runtime.el: * bytecomp-runtime.el (byte-compile-macro-environment): Moved from bytecomp.el. * bytecomp.el: * bytecomp.el (byte-compile-initial-macro-environment): Add implementations for #'load-time-value, #'labels here, now cl-macs respects byte-compile-macro-environment. * bytecomp.el (byte-compile-function-environment): * bytecomp.el (byte-compile-macro-environment): Removed. * bytecomp.el (symbol-value): * bytecomp.el (byte-compile-symbol-value): Removed. * cl-extra.el (cl-macroexpand-all): * cl-macs.el: * cl-macs.el (bind-block): * cl-macs.el (cl-macro-environment): Removed. * cl-macs.el (cl-transform-lambda): * cl-macs.el (load-time-value): * cl-macs.el (block): * cl-macs.el (flet): * cl-macs.el (labels): * cl-macs.el (macrolet): * cl-macs.el (symbol-macrolet): * cl-macs.el (lexical-let): * cl-macs.el (apply): * cl-macs.el (nthcdr): * cl-macs.el (getf): * cl-macs.el (substring): * cl-macs.el (values): * cl-macs.el (get-setf-method): * cl-macs.el (cl-setf-do-modify): * cl.el: * cl.el (cl-macro-environment): Removed. * cl.el (cl-macroexpand): * obsolete.el (cl-macro-environment): Moved here. Drop cl-macro-environment, in favour of byte-compile-macro-environment; make the latter available in bytecomp-runtime.el. This makes byte-compile-macro-environment far less useless, since previously code that used cl-macs would ignore it when calling #'cl-macroexpand-all. Add byte-compiler-specific implementations for #'load-time-value, #'labels. The latter is very nice indeed; it avoids the run-time consing of the current implementation, is fully lexical and avoids the run-time shadowing of symbol function slots that flet uses. It would now be reasonable to move most core uses of flet to use labels instead. Non-core code can't rely on print-circle for mutually recursive functions, though, so it's less of an evident win.
author Aidan Kehoe <kehoea@parhasard.net>
date Sun, 04 Sep 2011 20:37:55 +0100
parents da1365dd3f07
children
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1 This file is part of XEmacs.
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2
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3 XEmacs is free software: you can redistribute it and/or modify it
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4 under the terms of the GNU General Public License as published by the
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5 Free Software Foundation, either version 3 of the License, or (at your
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6 option) any later version.
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8 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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11 for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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17 This directory contains a number of XEmacs dynamic modules. These
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18 modules can be loaded directly with the command 'M-x load-module'.
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19 However, the preferred method of loading a module is to issue a
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20 "(require 'module-name)" command to the Lisp interpreter. This will
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21 store information so that a later "(unload-feature 'module-name)" can
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22 succeed.
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24 To compile one of these modules, simply enter the desired directory,
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25 type 'configure', and then 'make'. If you are building the module for
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26 an installed XEmacs, then 'make install' will place the module in the
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27 appropriate directory for XEmacs to find it later (assuming you have
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28 permission to write to that directory). A subsequent 'load-module' or
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29 'require' will then load the module, as described above.
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31 Each of these demonstrates different features and limitations of the
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32 XEmacs module loading technology. For a complete discussion on XEmacs
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33 dynamic modules, please consult the XEmacs Module Writers Guide, which
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34 can be found in the ../info directory.
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36 For those wanting to get started with module writing, please see the
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37 'sample' directory. It contains two subdirectories: internal and
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38 external. The 'internal' subdirectory contains the framework needed to
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39 migrate some core piece of XEmacs functionality into code that can
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40 either be compiled into the core or built as a separate module. The
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41 'external' subdirectory contains the somewhat simpler framework needed
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42 to build a module separately from XEmacs. These should be considered
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43 starting places for module writing.