* lisp/emacs-lisp/elisp-scope.el (elisp-scope-if-let): Fix
handling of a plain symbol as one the bindings in an
'if-let*' form, as in (if-let* (foo) 'bar).
* test/lisp/progmodes/elisp-mode-resources/semantic-highlighting.el:
Test it.
* lisp/emacs-lisp/elisp-scope.el
(elisp-scope--local-function-analyzer): New function.
(elisp-scope-flet, elisp-scope-labels)
(elisp-scope-named-let): Use it.
(elisp-scope-cl-macrolet): Check that argument is
'symbol-with-pos-p' before calling 'symbol-with-pos-pos'.
* test/lisp/progmodes/elisp-mode-resources/semantic-highlighting.el:
Add test form with 'when-let*'.
* test/lisp/progmodes/elisp-mode-tests.el (elisp-test-font-lock):
Trust temporary test buffer.
* lisp/progmodes/elisp-mode.el (elisp-bound-variable)
(elisp-free-variable): Inherit from
'font-lock-variable-use-face', override foreground face to
keep current appearance.
* lisp/emacs-lisp/elisp-scope.el (elisp-scope-1): All
special-forms should have an associated analyzer, so drop
fallback handling for unknown special-forms.
* lisp/emacs-lisp/elisp-scope.el
(elisp-scope-local-definitions): New variable. Replaces...
(elisp-scope-flet-alist, elisp-scope-macrolet-alist): these.
Removed, no longer used.
(elisp-scope-1, elisp-scope--handle-quoted): Update.
(elisp-scope-with-local-definition): New macro.
(elisp-scope-flet, elisp-scope-labels, elisp-scope-named-let)
(elisp-scope-cl-macrolet): Use it.
* lisp/emacs-lisp/elisp-scope.el (elisp-scope-flet)
(elisp-scope-labels, elisp-scope-cl-macrolet): Add argument
'outspec' and pass it down to 'elisp-scope-n'.
* lisp/emacs-lisp/elisp-scope.el
(special-variable-declaration): New symbol role.
(defvar): Update analyzer to distinguish between
declarations and definitions.
(defconst): Add a separate analyzer.
* lisp/progmodes/elisp-mode.el
(elisp-special-variable-declaration): New face.
* test/lisp/progmodes/elisp-mode-tests.el
(elisp-test-font-lock): New test.
* test/lisp/progmodes/elisp-mode-resources/semantic-highlighting.el:
New resource file.
* lisp/emacs-lisp/elisp-scope.el
(elisp-scope-add-symbol-roles-to-describe-symbol): New
autoloaded function intended for user configs, hooks
`elisp-scope-describe-symbol-role' into `describe-symbol'.
Extend the "type" system (to be renamed to "spec" in
subsequent commit) of elisp-scope.el with a plist spec.
This allows us to define a spec for the 'slots' argument of
'eieio-defclass-internal'. Also add a 'cl-type' spec,
describing the type specifications used by 'cl-typep', and
replace the 'equal' spec with a more general 'member' spec,
like we have in 'cl-typep'.
Take an Edebug spec of t as an indication that all of the
macro's arguments are evaluated, and analyze them as such.
Only do so as a fallback for macros that we cannot expand,
because expanding can lead to more accurate analysis,
e.g. with regards to the output type of the form.
Hook semantic highlighting into 'font-lock-keywords' instead
of 'font-lock-fontify-region-function'. See discussion at
https://yhetil.org/emacs/jwvseg2mnkx.fsf-monnier+emacs@gnu.org/T/#t
* lisp/progmodes/elisp-mode.el (elisp-fontify-region)
(elisp-fontify-region-semantically): Remove, no longer used.
(elisp-fontify-symbols): New function.
(elisp-semantic-font-lock-keywords): New 'defconst'.
(emacs-lisp-mode): Use it as the new highest
'font-lock-keywords' level.
Change the terminology used in elisp-scope.el to call the
symbols we use to categorizes the use of (other) symbols
"symbol roles" instead of "symbol types".
* lisp/emacs-lisp/elisp-scope.el:
* lisp/progmodes/elisp-mode.el: Change all occurrences of
"symbol type" say "role" instead.
Update all remaining function handlers to use
'elisp-scope-define-func-analyzer' instead of
'elisp-scope-define-function-analyzer'. The difference is
that the former handles all arguments explicitly, while the
latter analyzes all arguments as evaluated forms
automatically. By handling the arguments explicitly, we get
a chance to specify the expected type of different arguments.
Lastly, since 'elisp-scope-define-function-analyzer' is now
unused, rename 'elisp-scope-define-func-analyzer' to
'elisp-scope-define-function-analyzer'.
* lisp/gnus/mm-decode.el (mm-copy-to-buffer): Always return a
unibyte buffer. If the original text was multibyte, encode it
while inserting it into the copy buffer. (Bug#79376)
* lisp/progmodes/etags-regen.el
(etags-regen--process-file-region): New function.
(etags-regen--tags-generate, etags-regen--append-tags): Use the
new helper function to run the program, and use relative file
name if TAGS file is in the project root.
(etags-regen--update-file): Use relative file name if possible.
