view modules/README @ 5916:1152e0091f8c

Avoid confusion about ELC vs. source file encoding, #'load, #'load-internal. lisp/ChangeLog addition: 2015-06-03 Aidan Kehoe <kehoea@parhasard.net> * code-files.el (load): Revise this to respect load-ignore-out-of-date-elc-files, rather than leaving that to #'load-internal. Avoids a corner case where the source and the compiled file have different, incompatible encodings. Move the call to #'substitute-in-file-name here. No longer check for a zero-length filename, since #'load-internal no longer chokes on same and errors correctly. src/ChangeLog addition: 2015-06-03 Aidan Kehoe <kehoea@parhasard.net> * lread.c (Fload_internal): Delegate calling the handler and #'substitute-in-file-name to #'load. Error correctly with a zero-length file name, instead of giving a bus error on my machine. Delegate the check for out-of-date ELC files to #'load, avoiding a bug where the encoding of the ELC file and the source file differed. * lread.c (PRINT_LOADING_MESSAGE_1): This is simplified, now we no longer have to talk about out-of-date ELC files. tests/ChangeLog addition: 2015-06-03 Aidan Kehoe <kehoea@parhasard.net> * automated/file-tests.el: Gross sanity check for #'load and #'load-internal with a zero-length FILE, something that crashed until today.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 03 Jun 2015 20:13:07 +0100
parents da1365dd3f07
children
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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/>.


This directory contains a number of XEmacs dynamic modules.  These
modules can be loaded directly with the command 'M-x load-module'.
However, the preferred method of loading a module is to issue a
"(require 'module-name)" command to the Lisp interpreter.  This will
store information so that a later "(unload-feature 'module-name)" can
succeed.

To compile one of these modules, simply enter the desired directory,
type 'configure', and then 'make'.  If you are building the module for
an installed XEmacs, then 'make install' will place the module in the
appropriate directory for XEmacs to find it later (assuming you have
permission to write to that directory).  A subsequent 'load-module' or
'require' will then load the module, as described above.

Each of these demonstrates different features and limitations of the
XEmacs module loading technology.  For a complete discussion on XEmacs
dynamic modules, please consult the XEmacs Module Writers Guide, which
can be found in the ../info directory.

For those wanting to get started with module writing, please see the
'sample' directory.  It contains two subdirectories: internal and
external.  The 'internal' subdirectory contains the framework needed to
migrate some core piece of XEmacs functionality into code that can
either be compiled into the core or built as a separate module.  The
'external' subdirectory contains the somewhat simpler framework needed
to build a module separately from XEmacs.  These should be considered
starting places for module writing.