* lisp/progmodes/project.el: New file.
* lisp/cedet/ede.el: (project-try-ede): New function.
(project-root): New implementation.
* lisp/progmodes/elisp-mode.el (emacs-lisp-mode):
Set project-search-path-function.
(elisp--xref-find-references): Delegate some logic to
project-search-path.
(elisp-search-path): New function.
(elisp-xref-find): Don't implement `matches' anymore.
* lisp/progmodes/etags.el: Don't implement `matches'.
Delegate some logic to project-search-path.
(etags-search-path): New function.
* lisp/progmodes/xref.el (xref-find-function):
Remove `matches' from the API.
(xref-find-regexp): Move whatever common logic was in elisp and
etags implementations, and search the directories returned by
project-directories and project-search-path.
* lisp/emacs-lisp/map.el (map-elt, map-delete): Declare a gv-expander.
* lisp/emacs-lisp/map.el (map-put): Refactor using `setf' and `map-elt'.
* test/automated/map-tests.el: Update tests to work with the new
implementations of map-elt and map-put.
* lisp/gnus/nnimap.el (nnimap-open-connection-1): Always query
capabilities, so that a 'plain value for the `nnimap-stream' server
variable is handled correctly.
* doc/misc/gnus.texi (Customizing the IMAP Connection):
Document the 'plain option.
* lisp/gnus/gnus-group.el (gnus-group-group-name):
The group name may already be a string.
Specifically, in the group list reached from the *Server* buffer,
the 'gnus-group text property returns a string. Everywhere else
it returns a symbol.
* doc/emacs/files.texi (Diff Mode): Fix the description of `C-c
C-w' in Diff mode.
* doc/emacs/arevert-xtra.texi (Auto Reverting the Buffer Menu):
Add a cross reference.
; * doc/emacs/search.texi (Regexp Backslash): Minor fix.
* lisp/emacs-lisp/gv.el (gv-setter): New function.
(gv-invalid-place): New error.
(gv-get): Use them.
(gv-synthetic-place, gv-delay-error): New places.
* lisp/emacs-lisp/cl-generic.el (cl--generic-setf-rewrite): Remove.
(cl-defgeneric, cl-defmethod): Use gv-setter.
* lisp/server.el (server-process-filter): Remove redundant check
that 'cygwin-convert-file-name-from-windows' is defined as a
function on Cygwin. Don't call that function unless its argument
starts with a drive letter.
* lisp/help-fns.el (describe-symbol-backends): Move to help-mode.el.
(describe-symbol): Improve the selection of default.
* lisp/help-mode.el: Require cl-lib.
(describe-symbol-backends): Move from help-fns.el.
(help-make-xrefs): Use it.
* lisp/emacs-lisp/cl-extra.el (describe-symbol-backends): Add entry
for types.
(cl--typedef-regexp): New const.
(find-function-regexp-alist): Add entry for types.
(cl-help-type, cl-type-definition): New buttons.
(cl-find-class): New function.
(cl-describe-type): New command.
(cl--describe-class, cl--describe-class-slot)
(cl--describe-class-slots): New functions, moved from eieio-opt.el.
* lisp/emacs-lisp/cl-generic.el (cl--generic-method-documentation)
(cl--generic-all-functions, cl--generic-specializers-apply-to-type-p):
New functions. Moved from eieio-opt.el.
(cl--generic-class-parents): New function, extracted from
cl--generic-struct-specializers.
(cl--generic-struct-specializers): Use it.
* lisp/emacs-lisp/cl-macs.el (cl-defstruct): Use pcase-dolist.
Improve constructor's docstrings.
(cl-struct-unknown-slot): New error.
(cl-struct-slot-offset): Use it.
* lisp/emacs-lisp/cl-preloaded.el (cl-struct-define): Record the type
definition in current-load-list.
* lisp/emacs-lisp/eieio-core.el (eieio--known-slot-names): New var.
(eieio--add-new-slot): Set it.
(eieio-defclass-internal): Use new name for current-load-list.
(eieio-oref): Add compiler-macro to warn about unknown slots.
* lisp/emacs-lisp/eieio.el (defclass): Update eieio--known-slot-names
as compile-time as well. Improve constructor docstrings.
* lisp/emacs-lisp/eieio-opt.el (eieio-help-class)
(eieio--help-print-slot, eieio-help-class-slots): Move to cl-extra.el.
(eieio-class-def): Remove button.
(eieio-help-constructor): Use new name for load-history element.
(eieio--specializers-apply-to-class-p, eieio-all-generic-functions)
(eieio-method-documentation): Move to cl-generic.el.
(eieio-display-method-list): Use new names.
* lisp/emacs-lisp/lisp-mode.el (lisp-imenu-generic-expression):
Add "define-linline".
(lisp-fdefs): Remove "defsubst".
(el-fdefs): Add "defsubst", "cl-defsubst", and "define-linline".
* lisp/emacs-lisp/macroexp.el (macroexp--warned): New var.
(macroexp--warn-and-return): Use it to avoid inf-loops.
Add `compile-only' argument.
* lisp/help-fns.el (describe-symbol-backends): New var.
(help-xref-stack-item): Declare.
(describe-symbol): Rename from describe-function-or-variable.
Rewrite using describe-symbol-backends instead of help-xref-interned.
* lisp/help.el (help-map): Use it.
* lisp/help-mode.el (help-symbol, help-follow-symbol): Use it.
(help-xref-interned): Make it into an obsolete alias.
* lisp/dired-x.el (dired-x--string-to-number): New function.
(dired-mark-sexp): Use it. Tweak dired-re-inode-size. Fix usage
of directory-listing-before-filename-regexp. Consider
forward-word harmful and replace it. Add more verbiage in
comments and doc string.
* lisp/progmodes/python.el
(python-shell-calculate-process-environment): Calculate
process-environment or tramp-remote-process-environment depending
whether current file is remote.
(python-shell-calculate-exec-path): Calculate exec-path or
tramp-remote-path depending whether current file is remote.
(python-shell-with-environment): New macro.
(python-shell-prompt-detect, python-shell-calculate-command)
(python-shell-make-comint, python-check): Use it.
* lisp/progmodes/python.el (python-shell--interpreter)
(python-shell--interpreter-args): New vars.
(inferior-python-mode, python-shell-make-comint): Use them.
