Allow a condition-case handler on the form (:success BODY) to be
specified as the success continuation of the protected form, with
the specified variable bound to its result.
* src/eval.c (Fcondition_case): Update the doc string.
(internal_lisp_condition_case): Implement in interpreter.
(syms_of_eval): Defsym :success.
* lisp/emacs-lisp/bytecomp.el (byte-compile-condition-case):
Implement in byte-compiler.
* lisp/emacs-lisp/cl-macs.el (cl--self-tco): Allow self-TCO
from success handler.
* doc/lispref/control.texi (Handling Errors): Update manual.
* etc/NEWS: Announce.
* test/lisp/emacs-lisp/bytecomp-tests.el (bytecomp-tests--test-cases)
(bytecomp-condition-case-success):
* test/lisp/emacs-lisp/cl-macs-tests.el (cl-macs--labels):
Add test cases.
This file is needed for CEDET's bootstrap, tho, so we now keep a copy of it
under version control in `gram-wy-boot.el`, very much like we do with
the `ldefs-boot.el` copy of `loaddefs.el`.
* lisp/cedet/semantic/grm-wy-boot.el: Rename from
`lisp/cedet/semantic/grammar-wy.el`.
* lisp/cedet/semantic/grammar.el: Load `grm-wy-boot.el` if
`grammar-wy.el` hasn't been generated yet.
* admin/update_autogen: Also refresh `grm-wy-boot.el`.
* admin/grammars/Makefile.in (WISENT): Add `grammar-wy.el` to the
generated files.
* .gitignore: Add `grammar-wy.el`.
* lisp/emacs-lisp/easy-mmode.el (define-minor-mode):
Use `advertised-calling-convention` to avoid promoting the old
style arguments. Emit a wanring when old-style arguments are used.
Massage the docstring accordingly.
* doc/lispref/modes.texi (Defining Minor Modes): Document the keyword
arguments rather than the old-style positional arguments.
Edebug doesn't deal well with backtracking out of definitions, see
Bug#41988. Rather than trying to support this rare situation (e.g. by
implementing a multipass parser), prevent it by adding an implicit
gate.
* lisp/emacs-lisp/edebug.el (edebug--match-&-spec-op): Disable
backtracking when hitting a &define keyword.
* test/lisp/emacs-lisp/edebug-tests.el
(edebug-tests-duplicate-&define): New unit test.
(edebug-tests--duplicate-&define): New helper macro.
* doc/lispref/edebug.texi (Backtracking): Mention &define in the list
of constructs that disable backtracking.
* etc/NEWS: Document new behavior.
* lisp/emacs-lisp/byte-opt.el (byte-optimize-form-code-walker): Don't
perform incorrect optimisations when a condition-case variable shadows
another lexical variable.
* test/lisp/emacs-lisp/bytecomp-tests.el (bytecomp-tests--test-cases):
New test case.
* lisp/emacs-lisp/cl-macs.el (cl--self-tco): Recognise
`condition-case` handlers as being in the tail position.
* test/lisp/emacs-lisp/cl-macs-tests.el (cl-macs--labels):
Extend test.
* lisp/emacs-lisp/seq.el (seq-subseq): Add autoload cookie.
* lisp/eshell/esh-util.el (eshell-sublist): Redefine using seq-subseq
and make obsolete. Update callers.
* lisp/wid-edit.el (widget-sublist): Redefine as obsolete function
alias for seq-subseq. Update callers.
I've gotten tired of seeing the "function foo not known to be defined"
warning without any line number information. So this patch adds as
line number the position of the first use of that function in the file
(well, approximately, as usual).
(byte-compile-unresolved-functions): Add POSITIONs in the alist.
(byte-compile-function-warn): Store the current position in
`byte-compile-unresolved-functions`.
(byte-compile-arglist-warn): Adjust accordingly.
(byte-compile-print-syms): Delete unused function.
(byte-compile-warn-about-unresolved-functions): Use the stored position
to give more precise warnings.
* lisp/emacs-lisp/chart.el (chart-face-list): Allow a function as
the value (bug#47133) so that we can compute the faces dynamically
on different displays.
(chart--face-list): New function.
(chart-draw-data): Use it.
* lisp/emacs-lisp/package.el (package-install-selected-packages):
Add call to 'package--archives-initialize' and add optional argument
NOCONFIRM to skip user confirmation when installing packages. (Bug#47124)
(cconv--convert-funcbody): Check there's something after a docstring.
* test/lisp/emacs-lisp/bytecomp-tests.el (bytecomp-string-vs-docstring):
New corresponding test.
See the test 'ert-test-fail' for the expected structure.
* lisp/emacs-lisp/ert.el (ert--should-signal-hook): Condition list
should be (SYMBOL . DATA), not (SYMBOL DATA).
* test/lisp/emacs-lisp/ert-tests.el (ert-test-fail-inside-should): Fix
unit test.
This follows from a fix for Bug#46918 and a discussion to use
doc-string-elt:
https://lists.gnu.org/archive/html/emacs-devel/2021-03/msg00232.html
* lisp/emacs-lisp/checkdoc.el (checkdoc--next-docstring): Check for a
non-nil doc-string-elt property, instead of hard-coding the
supported symbols. Use that property to position point at the
doc-string.
