GNU bug report logs - #67417
29.1.50; c-ts-mode syntax issues with no brackets

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From: Arteen Abrishami <arteen <at> linux.ucla.edu>
To: 67417 <at> debbugs.gnu.org
Subject: bug#67417: 29.1.50; c-ts-mode syntax issues with no brackets
Date: Thu, 23 Nov 2023 12:55:31 -0800

This is specifically for the usage of `c-ts-mode` and is not a problem
in `c-mode`. Sometimes, when you type something like:

else
break

it won't indent the "break" until you type a semicolon. In this below
scenario, it does not indent the break at all, but `c-mode` does, and
switching from `c-mode` to `c-ts-mode` with correct indentation leaves
it fixed, but `c-ts-mode` cannot detect or fix it itself.

You can put it into a `.c` buffer all by itself and see:

```
unsigned
heap_pop(struct heapq * heap)
{
  if (heap->sz == 0)
    return -1;

  unsigned ret_val = heap->vals[0];
  heap->vals[0] = heap->vals[heap->len];
  heap->len -= 1;
  unsigned i = 0;
  unsigned lc;

  while ((lc = HEAPQ_L_CHILD(i)) < heap->len)
    {
      unsigned rc = HEAPQ_R_CHILD(i);
      /* no right child for our guy, special case */      
      if (rc == heap->len)
        {
          if (heap->vals[lc] < heap->vals[i])
            SWAP(heap->vals[lc], heap->vals[i]);
          break;
        }

      if (heap->vals[lc] < heap->vals[i])
        {
          SWAP(heap->vals[lc], heap->vals[i]);
          i = lc;
        }
      else if (heap->vals[rc] < heap->vals[i])
        {
          SWAP(heap->vals[rc], heap->vals[i]);
          i = rc;
        }
      else
      break;
      
    }
}
```

The very last break on the else without brackets around it will not indent.c


In GNU Emacs 29.1.50 (build 2, x86_64-apple-darwin23.0.0, NS
appkit-2487.00 Version 14.0 (Build 23A344)) of 2023-09-30 built on
Arteens-MacBook-Pro.local
Repository revision: 63ec6d998d42c970a825dca17743ece9c651d929
Repository branch: emacs-29
Windowing system distributor 'Apple', version 10.3.2487
System Description:  macOS 14.1.1

Configured using:
'configure --with-native-compilation=aot --without-pop
--with-tree-sitter --with-json 'CFLAGS=-O2 -pipe'
CPPFLAGS=-I/usr/local/opt/openjdk/bin:/usr/local/opt/openjdk/bin:/usr/local/opt/make/libexec/gnubin:/usr/local/opt/python <at> 3.11/libexec/bin:/usr/local/sbin:/Library/Frameworks/Python.framework/Versions/3.11/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Library/TeX/texbin'

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

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: C/*

Minor modes in effect:
  override-global-mode: t
  windmove-mode: t
  winner-mode: t
  delete-selection-mode: t
  global-auto-revert-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
  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:
None found.

Features:
(shadow sort mail-extr emacsbug message yank-media puny rfc822 mml
mml-sec epa derived epg rfc6068 epg-config gnus-util
text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils c++-ts-mode c-ts-mode c-ts-common treesit
misearch multi-isearch time-date comp comp-cstr warnings icons vc-git
diff-mode vc-dispatcher cc-mode cc-fonts cc-guess cc-menus cc-cmds
cc-styles cc-align cc-engine cc-vars cc-defs hideshow dired-subtree
dired-hacks-utils dired dired-loaddefs dash edmacro kmacro
use-package-bind-key bind-key easy-mmode rx doom-themes-ext-org
doom-themes-ext-visual-bell face-remap doom-vibrant-theme doom-themes
doom-themes-base exec-path-from-shell cl-extra help-mode
use-package-ensure use-package-core windmove winner ring delsel
autorevert filenotify dired-sidebar-autoloads dired-subtree-autoloads
dired-hacks-utils-autoloads info dash-autoloads doom-themes-autoloads
exec-path-from-shell-autoloads expand-region-autoloads 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 cl-seq eieio eieio-core cl-macs password-cache
json subr-x map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs
cl-lib rmc iso-transl tooltip cconv eldoc paren electric uniquify
ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads kqueue cocoa ns lcms2
multi-tty make-network-process native-compile emacs)

Memory information:
((conses 16 240395 9962)
(symbols 48 13899 0)
(strings 32 41716 3048)
(string-bytes 1 1380541)
(vectors 16 26557)
(vector-slots 8 519687 16325)
(floats 8 260 374)
(intervals 56 5432 0)
(buffers 984 16))

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