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c60b59e04c
Make `defvaralias` signal an error upon attempts to create variable alias cycles. This detects errors earlier and makes the alias traversal during execution simpler and faster since no cycle detection is needed elsewhere. Now variable and function aliases are handled identically in these respects. * src/lisp.h (indirect_variable): Remove declaration. * src/data.c (indirect_variable): Remove. (Findirect_variable): Update doc string. Simplify alias resolution. (Fboundp, find_symbol_value, set_internal, default_value) (set_default_internal, Fmake_variable_buffer_local) (Fmake_local_variable, Fkill_local_variable, Flocal_variable_p) (Flocal_variable_if_set_p, Fvariable_binding_locus): * src/buffer.c (buffer_local_value): * src/eval.c (specbind): Simplify variable alias resolution. (Fdefvaralias): Update doc string. Check for cycles. * doc/lispref/variables.texi (Variable Aliases): Mention that `defvaralias` can signal `cyclic-variable-indirection` but `indirect-variable` cannot. * etc/NEWS: Announce the change. * test/src/eval-tests.el (eval-tests-defvaralias): New test. |
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| .. | ||
| abbrevs.texi | ||
| anti.texi | ||
| back.texi | ||
| backups.texi | ||
| book-spine.texi | ||
| buffers.texi | ||
| ChangeLog.1 | ||
| commands.texi | ||
| compile.texi | ||
| control.texi | ||
| customize.texi | ||
| debugging.texi | ||
| display.texi | ||
| doclicense.texi | ||
| edebug.texi | ||
| elisp.texi | ||
| errors.texi | ||
| eval.texi | ||
| files.texi | ||
| frames.texi | ||
| functions.texi | ||
| gpl.texi | ||
| hash.texi | ||
| help.texi | ||
| hooks.texi | ||
| index.texi | ||
| internals.texi | ||
| intro.texi | ||
| keymaps.texi | ||
| lay-flat.texi | ||
| lists.texi | ||
| loading.texi | ||
| macros.texi | ||
| Makefile.in | ||
| maps.texi | ||
| markers.texi | ||
| minibuf.texi | ||
| modes.texi | ||
| nonascii.texi | ||
| numbers.texi | ||
| objects.texi | ||
| os.texi | ||
| package.texi | ||
| parsing.texi | ||
| positions.texi | ||
| processes.texi | ||
| README | ||
| records.texi | ||
| searching.texi | ||
| sequences.texi | ||
| spellfile | ||
| streams.texi | ||
| strings.texi | ||
| symbols.texi | ||
| syntax.texi | ||
| text.texi | ||
| threads.texi | ||
| tips.texi | ||
| two-volume-cross-refs.txt | ||
| two-volume.make | ||
| variables.texi | ||
| windows.texi | ||
Copyright (C) 2001-2023 Free Software Foundation, Inc. -*- outline -*-
See the end of the file for license conditions.
README for the Emacs Lisp Reference Manual.
* This directory contains the texinfo source files for the Emacs Lisp
Reference Manual.
* Report bugs in the Lisp Manual (or in Emacs) using M-x report-emacs-bug.
To ask questions, use the help-gnu-emacs mailing list.
* The Emacs Lisp Reference Manual is quite large. It totals around
1100 pages in smallbook format; the info files total around 3.0 megabytes.
* You can format this manual for Info, for printing hardcopy using TeX,
or for HTML.
* You can buy nicely printed copies from the Free Software Foundation.
Buying a manual from the Free Software Foundation helps support our GNU
development work. See <https://shop.fsf.org/>.
(At time of writing, this manual is out of print.)
* The master file for formatting this manual for Tex is called 'elisp.texi'.
It contains @include commands to include all the chapters that make up
the manual.
* This distribution contains a Makefile that you can use with GNU Make.
** To make an Info file, you need to install Texinfo, then run 'make info'.
** Use 'make elisp.pdf' or 'make elisp.html' to create PDF or HTML versions.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
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