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bug#59906: 29.0.60; typescript-ts-mode is not highlighting escape sequen


From: Jostein Kjønigsen
Subject: bug#59906: 29.0.60; typescript-ts-mode is not highlighting escape sequences
Date: Thu, 8 Dec 2022 16:04:05 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2

In a buffer with typescript-ts-mode activated, write the following code:

const test = "quoted\"string\" contents";

The entire text, include the \" is highlighted as strings, and escape sequences are not handled:

This code has the following tree-sitter syntax tree:

(lexical_declaration kind: const
 (variable_declarator name: (identifier) value: =
  (string " (string_fragment) (escape_sequence) (string_fragment) (escape_sequence) (string_fragment) "))
 ;)
In typescript-ts-mode we seemingly have rules to handle fontification of escape sequences:

   :language language
   :feature 'escape-sequence
   :override t
   '((escape_sequence) @font-lock-escape-face))
This feature is however not activated in the major-mode setup:

    (setq-local treesit-font-lock-feature-list
                '((comment declaration)
                  (keyword string)
                  (constant _expression_ identifier number pattern property)
                  (bracket delimiter)))

Naively I assumed that simply adding this feature would activate this rule, but still \" is fontified as string.

Invalid escape sequences are not highlighted as warnings either (like they are in json-ts-mode).

Would anyone like to take a stab at this? :)

--
Jostein



In GNU Emacs 29.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.33, cairo version 1.16.0) of 2022-12-08 built on dev-jostein
Repository revision: 8fb2afe051168b2eac2bba0ee102039d0af90a05
Repository branch: emacs-29
Windowing system distributor 'The X.Org Foundation', version 11.0.12201001
System Description: Ubuntu 22.04.1 LTS

Configured using:
 'configure --with-tree-sitter'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
TREE_SITTER X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB

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

Major mode: TypeScript

Minor modes in effect:
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  lsp-diagnostics-mode: t
  lsp-headerline-breadcrumb-mode: t
  lsp-modeline-workspace-status-mode: t
  lsp-modeline-diagnostics-mode: t
  lsp-modeline-code-actions-mode: t
  electric-pair-mode: t
  lsp-completion-mode: t
  editorconfig-mode: t
  flycheck-mode: t
  which-function-mode: t
  nlinum-mode: t
  company-mode: t
  global-ede-mode: t
  dap-tooltip-mode: t
  dap-ui-many-windows-mode: t
  dap-ui-controls-mode: t
  dap-ui-mode: t
  treemacs-filewatch-mode: t
  treemacs-follow-mode: t
  treemacs-git-mode: t
  treemacs-fringe-indicator-mode: t
  dap-auto-configure-mode: t
  dap-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  doom-modeline-mode: t
  projectile-mode: t
  ido-yes-or-no-mode: t
  helm-mode: t
  helm-minibuffer-history-mode: t
  shell-dirtrack-mode: t
  helm--remap-mouse-mode: t
  async-bytecomp-package-mode: t
  delete-selection-mode: t
  global-auto-revert-mode: t
  server-mode: t
  global-hl-line-mode: t
  lsp-managed-mode: t
  lsp-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  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
  auto-fill-function: yas--auto-fill
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
/home/jostein/.emacs.d/elpa/transient-20221202.1727/transient hides /home/jostein/build/emacs/lisp/transient

Features:
(dired-aux ede/dired magit-extras magit-bookmark magit-submodule
magit-obsolete magit-blame magit-stash magit-reflog magit-bisect
magit-push magit-pull magit-fetch magit-clone magit-remote magit-commit
magit-sequence magit-notes magit-worktree magit-tag magit-merge
magit-branch magit-reset magit-files magit-refs magit-status magit
magit-repos magit-apply magit-wip magit-log magit-diff smerge-mode
git-commit log-edit pcvs-util magit-core magit-autorevert magit-margin
magit-transient magit-process with-editor magit-mode transient magit-git
magit-base magit-section crm compat-27 compat-26 semantic/lex-spp
ede/emacs semantic/db semantic/util-modes semantic/util semantic
semantic/tag semantic/lex semantic/fw mode-local bug-reference help-fns
radix-tree shadow sort flyspell ispell emacsbug message yank-media
rfc822 mml mml-sec epa derived mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums mail-extr helm-command helm-elisp helm-eval
typescript-ts-mode lsp-diagnostics lsp-headerline lsp-icons lsp-modeline
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cc-align cc-engine cc-vars cc-defs executable misearch multi-isearch
vc-git diff-mode vc-dispatcher winner ffap disp-table tramp-archive
tramp-gvfs tramp-cache warnings time-stamp zeroconf dbus helm-bookmark
helm-net helm-adaptive helm-info treemacs-bookmarks treemacs-tags
bookmark face-remap add-log lsp-zig lsp-steep lsp-svelte lsp-sqls
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lsp-crystal lsp-cmake lsp-clojure lsp-semantic-tokens lsp-clangd
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lsp-actionscript ido-completing-read+ memoize minibuf-eldef
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editorconfig-core-handle editorconfig-fnmatch realgud realgud-zshdb
realgud:zshdb-track-mode realgud:zshdb-core realgud:zshdb-init
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realgud:trepan3k-init realgud-trepan2 realgud:trepan2-track-mode
realgud:trepan2-core realgud:trepan2-init realgud-trepanpl
realgud:trepanpl-track-mode realgud:trepanpl-core realgud:trepanpl-init
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realgud-remake realgud:remake-track-mode realgud:remake-core
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realgud-locals realgud-buffer-locals realgud-buffer-command
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realgud-lang esh-mode esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg
esh-module esh-groups esh-util cus-start realgud-loc
realgud-buffer-source realgud-key key realgud-follow realgud-fringe
realgud-helper loc-changes realgud-regexp realgud-custom load-relative
flycheck highlight-symbol which-func edebug debug backtrace nlinum linum
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company-gtags company-dabbrev-code company-dabbrev company-files
company-clang company-capf company-cmake company-semantic
company-template company-bbdb company-web-html company-web company-css
web-completion-data company eww url-queue shr pixel-fill kinsoku
url-file svg mm-url gnus nnheader gnus-util mail-utils range mm-util
mail-prsvr ede/speedbar ede/files ede ede/detect ede/base ede/auto
ede/source eieio-base eieio-speedbar speedbar ezimage dframe
eieio-custom cedet dap-mouse dap-ui lsp-treemacs lsp-treemacs-generic
lsp-treemacs-themes treemacs-treelib treemacs treemacs-header-line
treemacs-compatibility treemacs-mode treemacs-interface
treemacs-persistence treemacs-filewatch-mode treemacs-follow-mode
treemacs-rendering treemacs-annotations treemacs-async
treemacs-workspaces treemacs-dom treemacs-visuals
treemacs-fringe-indicator treemacs-scope pulse treemacs-faces
treemacs-icons treemacs-themes treemacs-core-utils pfuture
treemacs-logging treemacs-customization treemacs-macros gdb-mi bindat
gud bui bui-list bui-info bui-entry bui-core bui-history bui-button
bui-utils lsp-lens dap-gdb-lldb dap-netcore dap-node dap-utils dom xml
dap-pwsh lsp-pwsh dap-python dap-mode dap-tasks dap-launch lsp-docker
yaml posframe dap-overlays undo-tree diff queue doom-modeline
doom-modeline-segments doom-modeline-env doom-modeline-core shrink-path
compat compat-macs projectile lisp-mnt grep ibuf-ext ibuffer
ibuffer-loaddefs helm-imenu ob-plantuml org ob ob-tangle ob-ref ob-lob
ob-table ob-exp org-macro org-src ob-comint org-pcomplete org-list
org-footnote org-faces org-entities ob-emacs-lisp ob-core ob-eval
org-cycle org-table ol org-fold org-fold-core org-keys oc org-loaddefs
find-func cal-menu calendar cal-loaddefs org-version org-compat org-macs
ido-yes-or-no advice ido helm-mode helm-misc helm-files image-dired
image-dired-tags image-dired-external image-dired-util xdg image-mode
dired dired-loaddefs exif tramp tramp-loaddefs trampver
tramp-integration cus-edit pp cus-load files-x tramp-compat shell
pcomplete parse-time iso8601 time-date ls-lisp helm-buffers helm-occur
helm-tags helm-locate helm-grep helm-regexp format-spec helm-utils
helm-help helm-types helm helm-global-bindings helm-easymenu edmacro
kmacro helm-core easy-mmode async-bytecomp helm-source helm-multi-match
helm-lib async helm-config delsel cl-extra autorevert server hl-line
lsp-mode lsp-protocol yasnippet help-mode xref project tree-widget
wid-edit spinner pcase network-stream puny nsm markdown-mode color
thingatpt noutline outline icons lv inline imenu ht filenotify f
f-shortdoc shortdoc s ewoc epg rfc6068 epg-config dash dracula-theme
compile-eslint compile text-property-search comint ansi-osc ansi-color
ring cl finder-inf tree-sitter-indent-autoloads expand-region-autoloads
ido-yes-or-no-autoloads nodejs-repl-autoloads marmalade-client-autoloads
doom-modeline-autoloads elisp-slime-nav-autoloads
multiple-cursors-autoloads dracula-theme-autoloads
git-timemachine-autoloads crontab-mode-autoloads
highlight-symbol-autoloads ssh-config-mode-autoloads langtool-autoloads
dap-mode-autoloads lsp-treemacs-autoloads treemacs-autoloads
cfrs-autoloads posframe-autoloads gh-autoloads marshal-autoloads
logito-autoloads pcache-autoloads kv-autoloads toml-mode-autoloads
company-web-autoloads shrink-path-autoloads realgud-autoloads
realgud-recursive-autoloads load-relative-autoloads paredit-autoloads
bui-autoloads tree-sitter-langs-autoloads helpful-autoloads
elisp-refs-autoloads magit-autoloads magit-section-autoloads
git-commit-autoloads with-editor-autoloads flycheck-package-autoloads
package-lint-autoloads rust-mode-autoloads yaml-mode-autoloads
macrostep-autoloads lsp-docker-autoloads yaml-autoloads
lsp-mode-autoloads spinner-autoloads f-autoloads hydra-autoloads
nlinum-autoloads ht-autoloads loc-changes-autoloads transient-autoloads
compat-autoloads web-mode-autoloads undo-tree-autoloads queue-autoloads
ace-window-autoloads avy-autoloads bmx-mode-autoloads company-autoloads
test-simple-autoloads js2-mode-autoloads web-autoloads s-autoloads
ido-completing-read+-autoloads memoize-autoloads lv-autoloads
imenu-anywhere-autoloads helm-projectile-autoloads projectile-autoloads
helm-autoloads popup-autoloads helm-core-autoloads async-autoloads
tree-sitter-autoloads tsc-autoloads editorconfig-autoloads
json-mode-autoloads rx json-snatcher-autoloads yasnippet-autoloads
web-completion-data-autoloads cargo-autoloads markdown-mode-autoloads
pfuture-autoloads flycheck-autoloads pkg-info-autoloads epl-autoloads
info dash-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/x-win x-win term/common-win x-dnd 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 dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
emacs)

Memory information:
((conses 16 679481 87371)
 (symbols 48 59262 47)
 (strings 32 211608 16397)
 (string-bytes 1 6867045)
 (vectors 16 125808)
 (vector-slots 8 2378444 112756)
 (floats 8 591 891)
 (intervals 56 9416 3545)
 (buffers 992 46))

--
Jostein Kjønigsen
jostein.kjønigsen.no
jostein@kjonigsen.net - jostein@gmail.com

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