GNU bug report logs - #65057
29.1.50; cc-guess does not work with tree-sitter modes

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#65057: closed (29.1.50; cc-guess does not work with
 tree-sitter modes)
Date: Sat, 02 Sep 2023 16:46:01 +0000

[Message part 1 (text/plain, inline)]

Your message dated Sat, 2 Sep 2023 09:44:53 -0700
with message-id <CADwFkmmZ-AM3bQHk0u2aZ_BLNi9u-tBmYHXT+39LXzTQ8upsdg <at> mail.gmail.com>
and subject line Re: bug#65057: 29.1.50; cc-guess does not work with tree-sitter modes
has caused the debbugs.gnu.org bug report #65057,
regarding 29.1.50; cc-guess does not work with tree-sitter modes
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
65057: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=65057
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Kai Ma <justksqsf <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.1.50; cc-guess does not work with tree-sitter modes
Date: Sat, 05 Aug 2023 01:31:16 +0800

c-guess-buffer called in a buffer whose major mode is c-ts-mode will
raise the following error:

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  looking-at(nil)
  c-guess-basic-syntax()
  c-guess-examine(1 9173 nil)
  c-guess-region-no-install(1 9173 nil)
  c-guess-region(1 9173 nil)
  c-guess-buffer(nil)
  funcall-interactively(c-guess-buffer nil)
  call-interactively(c-guess-buffer record nil)
  command-execute(c-guess-buffer record)
  execute-extended-command(nil "c-guess-buffer" "c-gues")
  funcall-interactively(execute-extended-command nil "c-guess-buffer" "c-gues")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)

This problem can be easily reproduced on emacs -Q:

1. emacs -Q emacs.c
2. M-x c-ts-mode
3. M-x c-guess-buffer

FWIW, c-mode works as expected.


In GNU Emacs 29.1.50 (build 1, x86_64-apple-darwin22.6.0, NS
 appkit-2299.70 Version 13.5 (Build 22G74)) of 2023-08-03 built on
 Kais-MacBook.local
Repository revision: 7280e6aaa1978c6e26c4286db9c446fa74637fa4
Repository branch: emacs-29
Windowing system distributor 'Apple', version 10.3.2299
System Description:  macOS 13.5

Configured using:
 'configure --with-xwidgets --with-ns --with-tree-sitter -C
 'LDFLAGS=-L/usr/local/opt/llvm/lib -L/usr/local/opt/bison/lib
 -L/usr/local/opt/flex/lib' 'CPPFLAGS=-I/usr/local/opt/llvm/include
 -I/usr/local/opt/flex/include''

Configured features:
ACL DBUS GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY
KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
TREE_SITTER WEBP XIM XWIDGETS ZLIB

Important settings:
  value of $LC_ALL: zh_CN.utf-8
  value of $LANG: zh_CN.utf-8
  locale-coding-system: utf-8-unix

Major mode: C/*

Minor modes in effect:
  citre-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  shell-dirtrack-mode: t
  display-line-numbers-mode: t
  hl-todo-mode: t
  rainbow-delimiters-mode: t
  copilot-mode: t
  symbol-overlay-mode: t
  diff-hl-margin-local-mode: t
  diff-hl-margin-mode: t
  diff-hl-mode: t
  recentf-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  doom-modeline-mode: t
  winner-mode: t
  winum-mode: t
  which-key-mode: t
  global-hl-line-mode: t
  solaire-global-mode: t
  projectile-mode: t
  vertico-multiform-mode: t
  vertico-mouse-mode: t
  vertico-mode: t
  keyfreq-autosave-mode: t
  keyfreq-mode: t
  evil-leader-mode: t
  global-evil-surround-mode: t
  evil-surround-mode: t
  global-evil-collection-unimpaired-mode: t
  evil-collection-unimpaired-mode: t
  diredfl-global-mode: t
  evil-mode: t
  evil-local-mode: t
  corfu-popupinfo-mode: t
  global-corfu-mode: t
  corfu-mode: t
  marginalia-mode: t
  prescient-persist-mode: t
  global-ligature-mode: t
  ligature-mode: t
  pixel-scroll-precision-mode: t
  save-place-mode: t
  adaptive-wrap-prefix-mode: t
  server-mode: t
  electric-pair-mode: t
  global-so-long-mode: t
  delete-selection-mode: t
  global-auto-revert-mode: t
  override-global-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  context-menu-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  hs-minor-mode: t

Load-path shadows:
/Users/kaima/.emacs.d/elpa/transient-20230723.1411/transient hides /Applications/Emacs.app/Contents/Resources/lisp/transient

Features:
(shadow ecomplete emacsbug evil-collection-consult consult
magit-bookmark evil-collection-bookmark bookmark cap-words superword
subword rainbow-mode cl-print cus-start citre citre-global citre-tags
citre-ctags citre-readtags citre-readtags-tables citre-backend-interface
citre-ui-peek citre-ui-jump citre-common-tag citre-common-util c-ts-mode
c-ts-common evil-collection-vundo vundo misearch multi-isearch
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evil-collection-edebug edebug info-look evil-collection-elisp-refs
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magit-section benchmark format-spec cursor-sensor crm
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vertico-directory time-date pulse hideshow display-line-numbers hl-todo
rainbow-delimiters copilot copilot-balancer editorconfig
editorconfig-core editorconfig-core-handle editorconfig-fnmatch jsonrpc
evil-collection-ert ert evil-collection-debug debug backtrace find-func
warnings symbol-overlay evil-collection-diff-hl diff-hl-margin
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doom-modeline-segments let-alist doom-modeline-env doom-modeline-core
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evil-collection-which-key which-key hl-line solaire-mode face-remap
projectile project skeleton ibuf-macs find-dired lisp-mnt
evil-collection-grep grep evil-collection-compile compile
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ibuf-ext evil-collection-ibuffer ibuffer ibuffer-loaddefs
evil-collection-vertico vertico-multiform vertico-mouse vertico
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evil-surround evil-collection-unimpaired evil-collection-tabulated-list
evil-collection-tab-bar evil-collection-so-long evil-collection-simple
evil-collection-replace evil-collection-process-menu
evil-collection-popup evil-collection-package-menu evil-collection-info
evil-collection-indent evil-collection-image image-mode
evil-collection-dired diredfl dired dired-loaddefs exif
evil-collection-help evil-collection-eshell em-prompt esh-mode
evil-collection-elisp-mode evil-collection-eldoc evil-collection-custom
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prelude-lang-rust prelude-lang-python prelude-lang-cc prelude-lang-lisp
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data-faicons data-alltheicons pixel-scroll cua-base prelude-core hydra
ring lv saveplace adaptive-wrap dabbrev server finder-inf elec-pair
diminish exec-path-from-shell eshell esh-cmd esh-ext esh-opt esh-proc
esh-io esh-arg esh-module esh-groups esh-util files-x undohist edmacro
kmacro so-long delsel autorevert filenotify prelude-benchmark
benchmark-init advice cl-extra help-mode prelude-common prelude-iload
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use-package-delight use-package-diminish use-package-bind-key bind-key
easy-mmode prelude-loaddefs no-littering compat package browse-url url
url-proxy url-privacy url-expand url-methods url-history url-cookie
generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse
auth-source eieio eieio-core password-cache json subr-x map byte-opt
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cl-loaddefs cl-lib bytecomp byte-compile info adaptive-wrap-autoloads
alert-autoloads all-the-icons-dired-autoloads
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overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads xwidget-internal dbusbind
kqueue cocoa ns lcms2 multi-tty make-network-process emacs)

Memory information:
((conses 16 1640009 1209394)
 (symbols 48 89101 150)
 (strings 32 351297 54059)
 (string-bytes 1 10641159)
 (vectors 16 101882)
 (vector-slots 8 2989626 871662)
 (floats 8 1549 8139)
 (intervals 56 19954 7087)
 (buffers 984 43))

[Message part 3 (message/rfc822, inline)]

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Kai Ma <justksqsf <at> gmail.com>, 65057-done <at> debbugs.gnu.org
Subject: Re: bug#65057: 29.1.50; cc-guess does not work with tree-sitter modes
Date: Sat, 2 Sep 2023 09:44:53 -0700

Eli Zaretskii <eliz <at> gnu.org> writes:

> tags 65057 notabug
> thanks
>
>> From: Kai Ma <justksqsf <at> gmail.com>
>> Date: Sat, 05 Aug 2023 01:31:16 +0800
>>
>>
>> c-guess-buffer called in a buffer whose major mode is c-ts-mode will
>> raise the following error:
>>
>> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>>   looking-at(nil)
>
> cc-guess is incompatible with c-ts-mode, and should not be invoked in
> a buffer under c-ts-mode.  IOW, "don't do that".
>
> This is not a bug, this is a cockpit error.

I'm therefore closing this bug report.

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