186152ba40 Pacify gcc -Wunused-function on Ubuntu 18.04.3
4cd143aded Fix copyright years by hand
365e01cc9f Update copyright year to 2020
cd2c156163 ; * etc/NEWS: Make the description of XDG fallback more ac...
# Conflicts:
# etc/NEWS
# etc/refcards/ru-refcard.tex
* lisp/emacs-lisp/bytecomp.el (byte-compile-get-constant):
Use eql for looking up constants instead of eq, allowing
for bignum and flonum deduplication (bug#38708).
Add some hints to the message for byte compiler free & unused variable
warnings, and 'void-variable' errors where the variable has confusable
quote characters in it.
* lisp/help.el (uni-confusables), uni-confusables-regexp): New
constants.
(help-command-error-confusable-suggestions): New function, added to
`command-error-function'.
(help-uni-confusable-suggestions): New function.
* lisp/emacs-lisp/bytecomp.el (byte-compile-variable-ref):
* lisp/emacs-lisp/cconv.el (cconv--analyze-use): Use it.
* lisp/emacs-lisp/lisp-mode.el
(lisp--match-confusable-symbol-character): New function.
(lisp-fdefs): Use it to fontify confusable characters with
font-lock-warning-face when they occur in symbol names.
* doc/lispref/modes.texi (Faces for Font Lock):
* doc/lispref/objects.texi (Basic Char Syntax): Recommend backslash
escaping of confusable characters, and mention new fontification.
* etc/NEWS: Announce the new fontification behavior.
* test/lisp/emacs-lisp/lisp-mode-tests.el (lisp-fontify-confusables):
New test.
* lisp/emacs-lisp/bytecomp.el (emacs-lisp-compilation-mode-map):
No need to use set-keymap-parent here; `define-derived-mode' will
do that automatically.
* lisp/emacs-lisp/bytecomp.el (emacs-lisp-compilation-recompile):
New command (bug#4516).
(emacs-lisp-compilation--current-file)
(emacs-lisp-compilation-mode-map): New variables with new `g'
binding.
(byte-compile-log-file): Set variable so that `g' can recompile it.
* lisp/emacs-lisp/bytecomp.el (byte-compile-maybe-guarded): Add
arguments to local-variable-p to the bound list.
* lisp/image-mode.el (image-toggle-display-image): Remove no longer
needed boundp check.
This fix was provided by Pip Cet <pipcet@gmail.com>. It tightens the
code that tries to recognize a bytecode sequence as being a simple
function call (to then decompile it), which occasionally misfired.
I added some minor changes found while investigating this issue.
(byte-compile): Handle corner case where byte-compile-top-level returns
a non-self-evaluating expression.
(byte-compile-out-toplevel): Remove support for `progn` and `t` values
of output-type which aren't used anywhere.
* lisp/emacs-lisp/bytecomp.el (byte-compile-cond-use-jump-table): Set
to nil. We can turn this back on again when Bug#36447 is solved and
we handle dumped hash tables correctly.
See bug#11649 for an example problem, and emacs-devel discussion
«Prickliness of the "invalid byte code" stuff».
* lisp/wid-edit.el, lisp/wdired.el, lisp/vc/pcvs-util.el:
* lisp/progmodes/executable.el, lisp/mail/sendmail.el:
* lisp/emacs-lisp/cl-seq.el, lisp/emacs-lisp/cl-macs.el:
* lisp/emacs-lisp/cl-lib.el, lisp/emacs-lisp/cl-extra.el:
* lisp/dired-x.el, lisp/dired-aux.el, lisp/calendar/calendar.el:
Don't use byte-compile-dynamic any more.
* lisp/emacs-lisp/bytecomp.el (byte-compile-initial-macro-environment):
Change with-suppressed-warnings so it also affects the macro-expansion of
the body.
A single `cond' form can how be compiled to any number of switch ops,
optionally interspersed with non-switch conditions.
Previously, switch ops would only be used for whole `cond' forms
containing no other tests.
* lisp/emacs-lisp/bytecomp.el (byte-compile--cond-vars):
Rename from `byte-compile-cond-vars'.
(byte-compile--default-val): Remove.
(byte-compile--cond-switch-prefix):
Replace `byte-compile-cond-jump-table-info'; now also returns
trailing non-switch clauses.
(byte-compile-cond-jump-table): New arguments; no longer compiles
the default case.
(byte-compile-cond): Look for and compile switches at any place in the
list of clauses.
* test/lisp/emacs-lisp/bytecomp-tests.el (byte-opt-testsuite-arith-data):
Add test expression.
Allow any mixture of `eq', `eql' and `equal', `memq', `memql' and
`member' in a switch-like `cond' to be compiled into a single switch.
* lisp/emacs-lisp/bytecomp.el (byte-compile--common-test): New.
(byte-compile-cond-jump-table-info): Use most specific common test.
* test/lisp/emacs-lisp/bytecomp-tests.el (byte-opt-testsuite-arith-data):
Add test cases for multi-value clause cond forms.
* lisp/emacs-lisp/bytecomp.el (byte-compile-cond-jump-table-info):
Expand `memq', `memql' and `member' to their corresponding
equality tests.
(byte-compile-cond-jump-table): Cases now have multiple values.
* lisp/emacs-lisp/byte-opt.el (byte-decompile-bytecode-1)
(byte-optimize-lapcode): Don't assume switch hash tables to be injective.
* lisp/emacs-lisp/byte-run.el (with-suppressed-warnings): New macro.
* doc/lispref/compile.texi (Compiler Errors): Document
with-suppressed-warnings and deemphasise with-no-warnings
slightly.
* lisp/emacs-lisp/bytecomp.el (byte-compile--suppressed-warnings):
New internal variable.
(byte-compile-warning-enabled-p): Heed
byte-compile--suppressed-warnings, bound via with-suppressed-warnings.
(byte-compile-initial-macro-environment): Provide a macro
expansion of with-suppressed-warnings.
(byte-compile-file-form-with-suppressed-warnings): New byte hunk
handler for the suppressed symbol machinery.
(byte-compile-suppressed-warnings): Ditto for the byteop.
(byte-compile-file-form-defmumble): Ditto.
(byte-compile-form, byte-compile-normal-call)
(byte-compile-normal-call, byte-compile-variable-ref)
(byte-compile-set-default, byte-compile-variable-set)
(byte-compile-function-form, byte-compile-set-default)
(byte-compile-warn-obsolete, byte-compile--declare-var): Pass the
symbol being warned in to byte-compile-warning-enabled-p.
* test/lisp/emacs-lisp/bytecomp-tests.el (test-suppression): New
function.
(bytecomp-test--with-suppressed-warnings): Tests.
* lisp/emacs-lisp/bytecomp.el (byte-compile-from-buffer): Restore lost
let-binding of lread--unescaped-character-literals, so that unescaped
literals warning will only apply to the form just read.
* test/lisp/emacs-lisp/bytecomp-tests.el
(bytecomp-tests--unescaped-char-literals): Expand test to check that
we don't keep warning about old unescaped literals.
* lisp/emacs-lisp/bytecomp.el (byte-compile-callargs-warn): Don't pass
symbols which don't have a known definition to
byte-compile--function-signature, it fails to compile code which
previously compiled successfully (for example, gnus.el until
2019-06-01 "* lisp/gnus/gnus.el: Mark autoloaded macros as such" which
autoloads some macros as if they were functions).
134edc1 Warn about wrong number of args for subrs (Bug#35767)
5f01af6 Use plain symbols for eieio type descriptors (Bug#29220)
4b24b01 Pacify GCC 9 -Wredundant-decls
Fix code mistakes that prevented the correct elimination of duplicated
cases when compiling a `cond' form to a switch bytecode, as in
(cond ((eq x 'a) 1)
((eq x 'b) 2)
((eq x 'a) 3) ; should be elided
((eq x 'c) 4))
Sometimes, this caused the bytecode to use the wrong branch (bug#35770).
* lisp/emacs-lisp/bytecomp.el (byte-compile-cond-vars): Return obj2 eval'ed.
(byte-compile-cond-jump-table-info):
Discard redundant condition. Use `obj2' as evaluated.
Discard duplicated cases instead of failing the table generation.
* test/lisp/emacs-lisp/bytecomp-tests.el (toplevel): Require subr-x.
(byte-opt-testsuite-arith-data, bytecomp-test--switch-duplicates): Test.
Restore lines saying "Maintainer: emacs-devel@gnu.org" when there is
no special maintainer for a file. Although this wasn't documented
it was common practice and removing the lines didn't have consensus.
See Bug#31676.
* lisp/emacs-lisp/byte-run.el
(byte-run--unescaped-character-literals-warning): New defun.
* src/lread.c (load_warn_unescaped_character_literals): Use new defun.
(syms_of_lread): Define symbol for new defun.
* lisp/emacs-lisp/bytecomp.el (byte-compile-from-buffer): Use new
defun.
* test/src/lread-tests.el (lread-tests--unescaped-char-literals):
test/lisp/emacs-lisp/bytecomp-tests.el
(bytecomp-tests--unescaped-char-literals): Adapt unit tests.
* lisp/emacs-lisp/bytecomp.el (byte-compile-setq-default): Delete.
(byte-compile-set-default): Inline the part that it used.
* lisp/emacs-lisp/edebug.el (setq-default): Remove the debug spec.
* src/data.c (Fsetq_default): Delete.
(syms_of_data): Don't register.
Those have been supported by the function implementation since
commit 2014-03-31T12:06:34Z!dmantipov@yandex.ru (Bug#33807).
* lisp/emacs-lisp/bytecomp.el: substring has 1-3 args, not 2-3.
This fixes bug #33602 and is a partial reversion of a commit from
2018-11-28T13:15:50.
* lisp/emacs-lisp/bytecomp.el (byte-compile-log-file): Don't create buffer
*Compile-Log* because it doesn't already exist. Amend message "Compiling no
file" to be clearer (?and less irritating).
In particular, warning messages from compile_defun now contain the source
buffer name and line and column numbers. Typing CR on such a warning now
moves to the pertinent place in the source buffer.
This fixes bug #33475
* lisp/emacs-lisp/bytecomp.el (top-level): Require compile.elc?.
(emacs-lisp-compilation-file-name-or-buffer)
(emacs-lisp-compilation-parse-errors-filename-function): New
variables/constants.
(emacs-lisp-compilation-mode): New mode derived from compilation-mode.
(byte-compile-log-file): Check byte-compile-current-file for being a string,
not merely non-nil. Change wording in message from "buffer" to "in buffer".
Go into emacs-lisp-compilation-mode rather than the plain compilation-mode.
(compile-defun): Bind byte-compile-current-file to current-buffer, not nil.
* lisp/progmodes/compilation-mode
(compilation-parse-errors-filename-function): Amend comments to specify that
this function may return a buffer, and that it need not save the match data.
(Several places): Amend comments to allow for the use of a buffer rather than
a file name.
(compilation-next-error-function): If the "file name" in file struct is
actually a buffer, use it rather than compilation-find-file's result.
(compilation-get-file-structure): save-match-data around the call to
compilation-parse-errors-filename-function. Only call
command-line-normalize-file-name when `filename' is a string.
This improves on the recent fix for master failing to build
on FreeBSD. Suggested by Stefan Monnier in:
https://lists.gnu.org/r/emacs-devel/2018-01/msg00600.html
* lisp/emacs-lisp/bytecomp.el (byte-compile-file):
Put tempfile next to the target file, as was the original intent.
(cherry picked from commit 64c8467386)
I audited use of lsh in the Lisp source code, and fixed the
glitches that I found. While I was at it, I replaced uses of lsh
with ash when either will do. Replacement is OK when either
argument is known to be nonnegative, or when only the low-order
bits of the result matter, and is a (minor) win since ash is a bit
more solid than lsh nowadays, and is a bit faster.
* lisp/calc/calc-ext.el (math-check-fixnum):
Prefer most-positive-fixnum to (lsh -1 -1).
* lisp/vc/vc-hg.el (vc-hg-state-fast): When testing fixnum width,
prefer (zerop (ash most-positive-fixnum -32)) to (zerop (lsh -1
32)) (Bug#32485#11).
* lisp/emacs-lisp/bytecomp.el (byte-compile-lapcode):
Tighten sanity-check for bytecode overflow, by checking that the
result of (ash pc -8) is nonnegative. Formerly this check was not
needed since lsh was used and the number overflowed differently.
* lisp/net/dns.el (dns-write): Fix some obvious sign typos in
shift counts. Evidently this part of the code has never been
exercised.
* lisp/progmodes/hideif.el (hif-shiftleft, hif-shiftright):
* lisp/term/common-win.el (x-setup-function-keys):
Simplify.
* admin/unidata/unidata-gen.el, admin/unidata/uvs.el:
* doc/lispref/keymaps.texi, doc/lispref/syntax.texi:
* doc/misc/calc.texi, doc/misc/cl.texi, etc/NEWS.19:
* lisp/arc-mode.el, lisp/calc/calc-bin.el, lisp/calc/calc-comb.el:
* lisp/calc/calc-ext.el, lisp/calc/calc-math.el:
* lisp/cedet/semantic/wisent/comp.el, lisp/composite.el:
* lisp/disp-table.el, lisp/dos-fns.el, lisp/edmacro.el:
* lisp/emacs-lisp/bindat.el, lisp/emacs-lisp/byte-opt.el:
* lisp/emacs-lisp/bytecomp.el, lisp/emacs-lisp/cl-extra.el:
* lisp/erc/erc-dcc.el, lisp/facemenu.el, lisp/gnus/message.el:
* lisp/gnus/nndoc.el, lisp/gnus/nnmaildir.el, lisp/image.el:
* lisp/international/ccl.el, lisp/international/fontset.el:
* lisp/international/mule-cmds.el, lisp/international/mule.el:
* lisp/json.el, lisp/mail/binhex.el, lisp/mail/rmail.el:
* lisp/mail/uudecode.el, lisp/md4.el, lisp/net/dns.el:
* lisp/net/ntlm.el, lisp/net/sasl.el, lisp/net/socks.el:
* lisp/net/tramp.el, lisp/obsolete/levents.el:
* lisp/obsolete/pgg-parse.el, lisp/org/org.el:
* lisp/org/ox-publish.el, lisp/progmodes/cc-defs.el:
* lisp/progmodes/ebnf2ps.el, lisp/progmodes/hideif.el:
* lisp/ps-bdf.el, lisp/ps-print.el, lisp/simple.el:
* lisp/tar-mode.el, lisp/term/common-win.el:
* lisp/term/tty-colors.el, lisp/term/xterm.el, lisp/vc/vc-git.el:
* lisp/vc/vc-hg.el, lisp/x-dnd.el, test/src/data-tests.el:
Prefer ash to lsh when either will do.
Backport from master.
Do not use the symbol ‘default’ as a special marker.
Instead, use a value that cannot appear in the program,
improving on a patch proposed by Robert Cochran (Bug#31718#14).
* lisp/emacs-lisp/bytecomp.el (byte-compile--default-val):
New constant.
(byte-compile-cond-jump-table-info)
(byte-compile-cond-jump-table): Use it instead of 'default.
* test/lisp/emacs-lisp/bytecomp-tests.el:
(byte-opt-testsuite-arith-data): Add a test for the bug.
