This is mostly factored out from tabulated-list.el (with bugs fixed).
* doc/lispref/modes.texi (Header Lines): Document it.
* lisp/display-line-numbers.el (header-line-indent): New variable.
(header-line-indent--line-number-width)
(header-line-indent--watch-line-number-width)
(header-line-indent--window-scroll-function): New helper functions.
(header-line-indent-mode): New minor mode.
* lisp/display-line-numbers.el (header-line-indent-width): New
variable.
* lisp/emacs-lisp/tabulated-list.el (tabulated-list-line-number-width)
(tabulated-list-watch-line-number-width)
(tabulated-list-window-scroll-function): Make into obsolete aliases.
(tabulated-list-mode): Use 'header-line-indent-mode'.
* lisp/emacs-lisp/tabulated-list.el (tabulated-list-init-header):
Adjust the header line format and computation.
* src/buffer.c (syms_of_buffer): Mention header-line-indent-mode.
* lisp/emacs-lisp/package.el (package-update-all): New function
(bug#19146).
(package--updateable-packages): Factored out...
(package-update): ... from here.
* lisp/emacs-lisp/check-declare.el (check-declare-directory): Don't
bug out if we don't find any files with declare-function:(bug#55354)
because this is a predicate function, and that's inconvenient.
* lisp/emacs-lisp/bytecomp.el
(byte-compile--suspicious-defcustom-choice): New function (bug#16271).
(byte-compile-nogroup-warn): Use it to warn about forms like
(choice (const :tag "foo" 'bar)).
* configure.ac (HAVE_TREE_SITTER, TREE_SITTER_OBJ): New variables.
(DYNAMIC_LIB_SUFFIX): new variable, I copied code from MODULES_SUFFIX
so the diff looks this way.
* doc/lispref/elisp.texi (Top): Add tree-sitter manual.
* doc/lispref/modes.texi (Font Lock Mode): mention tree-sitter.
(Parser-based Font Lock): New section.
(Auto-Indentation): Mention tree-sitter.
(Parser-based Indentation): New section.
* doc/lispref/parsing.texi (Parsing Program Source): New chapter.
* lisp/emacs-lisp/cl-preloaded.el (cl--typeof-types): Add
treesit-parser and treesit-node type.
* lisp/treesit.el: New file.
* src/Makefile.in (TREE_SITTER_LIBS, TREE_SITTER_FLAGS,
TREE_SITTER_OBJ): New variables.
* src/alloc.c:
(cleanup_vector): Add cleanup code for treesit-parser and
treesit-node.
* src/casefiddle.c (casify_region): Notify tree-sitter parser of
buffer change.
* src/data.c (Ftype_of): Add treesit-parser and treesit-node type
(Qtreesit_parser, Qtreesit_node): New symbol.
* src/emacs.c (main): Add symbols in treesit.c.
* src/eval.c (define_error): Move the function to here.
* src/insdel.c (insert_1_both, insert_from_string_1, insert_from_gap,
insert_from_buffer_1, replace_range, del_range_2): Notify tree-sitter
parser of buffer change.
* src/json.c (define_error): Move this function out.
* src/lisp.h (DEFINE_GDB_SYMBOL_BEGIN): Add treesit-parser and
treesit-node.
* src/lread.c (Vdynamic_library_suffixes): New variable.
* src/print.c (print_vectorlike): Add code for printing
treesit-parser and treesit-node.
* src/treesit.c: New file.
* src/treesit.h: New file.
* test/src/treesit-tests.el: New file.
* lisp/subr.el (buffer-local-set-state)
(buffer-local-set-state--get, buffer-local-restore-state): Moved
from easy-mmode.el because they have to be available run-time.
* lisp/emacs-lisp/easy-mmode.el (buffer-local-set-state)
(buffer-local-restore-state): Doc fixes.
* doc/lispref/modes.texi (Defining Minor Modes): Fix a typo and
improve wording and indexing.
* lisp/emacs-lisp/easy-mmode.el (buffer-local-set-state--get)
(buffer-local-restore-state): Autoload. Perhaps it would be
better to move these functions to subr.el or something...
* doc/lispref/modes.texi (Defining Minor Modes): Document it.
* lisp/emacs-lisp/easy-mmode.el (buffer-local-set-state): New macro.
(buffer-local-set-state--get): Helper function.
(buffer-local-restore-state): New function.
* lisp/textmodes/word-wrap-mode.el (word-wrap-whitespace-mode):
Use it to simplify code.
* lisp/emacs-lisp/subr-x.el (with-buffer-unmodified-if-unchanged):
Skip the hash if the buffer was not modified at all.
Use `restore-buffer-modified-p`.
Also mention that it's imperative that the current buffer is preserved.
* lisp/emacs-lisp/subr-x.el (with-buffer-unmodified-if-unchanged):
New macro.
* lisp/textmodes/fill.el (fill-paragraph): Macro code copied from
here. Adjust and use the macro.
* doc/lispref/debugging.texi (Error Debugging): Document it.
* doc/lispref/edebug.texi (Edebug Eval): Mention it.
* lisp/emacs-lisp/debug.el (debug-allow-recursive-debug): New user
option (bug#36145).
(debugger-eval-expression): Use it.
* lisp/emacs-lisp/edebug.el (edebug-eval-expression): Ditto.
This patch is based on a patch by Noam Postavsky.
* lisp/subr.el (internal--build-binding)
(internal--build-bindings): Moved from subr-x.el and rewritten to
not use the threading macro.
(if-let*, when-let*, and-let*, if-let, when-let): Moved from
subr-x.el. This avoids breaking the build every time somebody
uses these macros in functions that end up being called during
bootstrap.
* lisp/emacs-lisp/debug-early.el (debug-early-backtrace):
Escape newlines to and bytecodes to make backtraces slightly more
readable. Use `cl-prin1` when available.
`type-of` returns `compiled-function` for bytecode functions, but the
predicate for those objects is called `byte-code-function-p`,
So accept both `compiled-function` and `byte-code-function` as type
names for those objects.
* lisp/emacs-lisp/cl-preloaded.el (cl--typeof-types):
Add `byte-code-function`.
* lisp/emacs-lisp/cl-macs.el (byte-code-function, compiled-function, subr):
New types.
* lisp/emacs-lisp/nadvice.el (advice--make-how-alist): New macro.
(advice--how-alist): Use it.
(nadvice--make-docstring): New function.
(add-function, advice-add): Use it to auto-generate the table
describing the accepted values for `how`.
* lisp/emacs-lisp/nadvice.el (advice): New OClosure type.
(advice--how-alist): Make it hold prototype OClosures rather
than bytecode strings.
(advice--bytecodes): Delete var.
(advice--where): Make it an obsolete alias of new `advice--how`.
(oclosure-interactive-form, cl-print-object) <advice>: New methods.
(advice--make-1): Delete function.
(advice--make): Use `advice-copy` and `advice-cons`.
(advice--tweak): Use `advice-cons`.
(add-function, advice-add): Rename `where` arg to `how`.
* lisp/emacs-lisp/cl-print.el (cl-print-object) <:extra "nadvice">:
Remove now-redundant ad-hoc method.
* test/lisp/emacs-lisp/nadvice-tests.el (advice-test-print): New test.
* lisp/emacs-lisp/oclosure.el (oclosure--accessor-cl-print): New function.
* lisp/emacs-lisp/cl-print.el (cl-print-object) <accessor>: New method.
* test/lisp/emacs-lisp/nadvice-tests.el (advice-test-call-interactively):
Avoid `defun` within a function.
Try and improve the display of methods in `C-h o` by moving
the qualifiers to a separate line and upcasing the formal args.
It still needs love, tho.
* lisp/emacs-lisp/cl-generic.el: Upcase formal args in `C-h o`
(cl--generic-upcase-formal-args): New function.
(cl--generic-describe): Use it.
* lisp/emacs-lisp/vtable.el (vtable):
(make-vtable): Store whether the user has specified the columns.
(vtable-insert): Don't insert a header line or a header if the
user hasn't specified the columns (bug#55075).
These are symbols with position from source code, which should not be replaced
by bare symbols in, e.g., optimization functions.
* lisp/Makefile.in: (BYTE_COMPILE_FLAGS, compile-first case): Set
max-specpdl-size to 5000 for the benefit of lisp/emacs-lisp/comp.el.
* lisp/emacs-lisp/byte-opt.el (byte-optimize-form-code-walker)
(byte-optimize--rename-var, byte-optimize-if, byte-optimize-letX)
* lisp/emacs-lisp/bytecomp.el (byte-compile-recurse-toplevel)
(byte-compile-lambda)
* lisp/emacs-lisp/cconv.el (cconv-convert)
* lisp/emacs-lisp/macroexp.el (macroexp--expand-all): Preserve, e.g., (car
form) in the byte compiler, when this form's car is a symbol with position of
a special form, rather than replacing the symbol with a bare symbol, e.g.
'cond.
A supplementary commit to that on 2022-04-18:
* lisp/emacs-lisp/bytecomp.el (byte-compile--first-symbol-with-pos): Handle
vectors and records correctly.
* lisp/emacs-lisp/byte-run.el (byte-run--ssp-seen): Correct the doc string.
