Rainbow-delimiters-mode marks the closing angle brackets of jsx syntax as mismatched because no matching chars seem to be specified in the jsx syntax table. These are the text properties of the opening angle bracket: face (rainbow-delimiters-depth-2-face) font-lock-multiline t fontified t js-jsx-close-tag-pos 97 js-jsx-syntax-table (4) js-jsx-tag-beg (open . 57) syntax-multiline t syntax-table (4) And these are the text properties of the closing angle bracket: face (rainbow-delimiters-mismatched-face) font-lock-multiline t fontified t js-jsx-syntax-table (5) syntax-multiline t syntax-table (5) In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu) of 2019-05-17 built on kubuntu1804 Repository revision: deb88392c61d9cdf99f2fbe432c16d995541e2c0 Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.11906000 System Description: Ubuntu 18.04.2 LTS Recent messages: Saving file /home/tijs/.emacs.d/recentf... Wrote /home/tijs/.emacs.d/recentf Saving file /home/tijs/.emacs.d/recentf... Wrote /home/tijs/.emacs.d/recentf Saving file /home/tijs/.emacs.d/recentf... Wrote /home/tijs/.emacs.d/recentf Char: i (105, #o151, #x69) point=54 of 106 (50%) column=13 You can run the command ‘what-cursor-position’ with C-x = Char: i (105, #o151, #x69) point=54 of 106 (50%) column=13 Configured using: 'configure --with-mailutils --with-x-toolkit=no' Configured features: XPM JPEG TIFF GIF PNG RSVG SOUND GSETTINGS GLIB NOTIFY INOTIFY GNUTLS LIBXML2 FREETYPE XFT ZLIB OLDXMENU X11 XDBE XIM THREADS PDUMPER GMP Important settings: value of $LC_MONETARY: nl_BE.UTF-8 value of $LC_NUMERIC: nl_BE.UTF-8 value of $LC_TIME: nl_BE.UTF-8 value of $LANG: nl_BE.UTF-8 locale-coding-system: utf-8-unix Major mode: JavaScript[JSX] Minor modes in effect: tern-mode: t rainbow-delimiters-mode: t paredit-mode: t global-whitespace-mode: t global-git-gutter-mode: t ivy-mode: t global-magit-file-mode: t magit-auto-revert-mode: t global-git-commit-mode: t async-bytecomp-package-mode: t yas-global-mode: t yas-minor-mode: t override-paredit-newline-mode: t pdf-occur-global-minor-mode: t org-clock-today-mode: t global-company-mode: t company-mode: t ws-butler-global-mode: t ws-butler-mode: t recentf-mode: t delete-selection-mode: t global-flycheck-mode: t flycheck-mode: t shell-dirtrack-mode: t show-paren-mode: t tooltip-mode: t global-eldoc-mode: t electric-indent-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t column-number-mode: t line-number-mode: t transient-mark-mode: t hs-minor-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug sendmail descr-text network-stream company-tern dash-functional hideshow tern js cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs eshell-fringe-status eshell-fixed-prompt eshell-up eshell-z em-unix em-term em-script em-prompt em-ls em-hist em-pred em-glob em-dirs esh-var em-cmpl em-basic em-banner em-alias em-tramp esh-mode org-rmail org-mhe org-irc org-info org-gnus nnir gnus-sum gnus-group gnus-undo gnus-start gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int gnus-range org-docview doc-view org-bibtex bibtex org-bbdb org-w3m rainbow-delimiters paredit solarized-dark-theme solarized hydra lv eww mm-url url-queue shr svg xml dom browse-url company-elisp company-files company-dabbrev company-capf whitespace git-gutter ivy colir ivy-overlay ffap magit-bookmark magit-submodule magit-obsolete magit-blame magit-stash 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-collab ghub-graphql treepy graphql ghub url-http url-gw nsm url-auth url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf url-util mailcap magit-files magit-refs magit-status magit magit-repos magit-apply magit-wip magit-log which-func magit-diff smerge-mode diff-mode magit-core magit-autorevert autorevert filenotify magit-process magit-margin magit-mode git-commit magit-git magit-section magit-utils magit-popup crm log-edit message rmc puny rfc822 mml mml-sec epa derived epg mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader pcvs-util add-log with-editor async-bytecomp async server yasnippet elec-pair pdf-occur ibuf-ext ibuffer ibuffer-loaddefs tablist tablist-filter semantic/wisent/comp semantic/wisent semantic/wisent/wisent semantic/util-modes semantic/util semantic semantic/tag semantic/lex semantic/fw mode-local cedet dired dired-loaddefs pdf-isearch let-alist pdf-misc pdf-tools cus-edit cus-start cus-load pdf-view bookmark pp jka-compr pdf-cache pdf-info tq pdf-util image-mode multi-term cl term disp-table ehelp org-clock-today org-clock mysql-to-org sql view eshell-hl-cmd php-eval php-eval-completion php-eval-eldoc php-eval-utils company pcase gg-find-def cider-scratch cider-eval cider-repl cider-resolve cider-eldoc cider-test cider-stacktrace cider-doc cider-browse-spec org-table org-element avl-tree org org-macro org-footnote org-pcomplete org-list org-faces org-entities noutline outline org-version ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint ob-core ob-eval org-compat org-macs org-loaddefs cal-menu calendar cal-loaddefs cider-grimoire cider-popup easy-mmode cider-overlays cider-client cider-common etags fileloop generator xref project cider-util thingatpt color cider-connection sesman-browser nrepl-client queue nrepl-dict cider-compat spinner sesman vc vc-dispatcher edmacro kmacro clojure-mode lisp-mnt align imenu compile gnus-win gnus nnheader gnus-util rmail rmail-loaddefs rfc2047 rfc2045 ietf-drums text-property-search time-date mail-utils mm-util mail-prsvr s ws-butler recentf tree-widget wid-edit delsel eshell esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg esh-module esh-groups esh-util flycheck cl-extra find-func help-mode rx dash tramp tramp-loaddefs trampver tramp-integration files-x tramp-compat ucs-normalize shell pcomplete comint ansi-color ring parse-time format-spec advice paren ido mule-util info package easymenu epg-config url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache json subr-x map url-vars seq byte-opt gv bytecomp byte-compile cconv cl-loaddefs cl-lib tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type 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 elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame cl-generic 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 charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote threads inotify dynamic-setting system-font-setting font-render-setting x multi-tty make-network-process emacs) Memory information: ((conses 16 570512 33186) (symbols 48 53308 3) (strings 32 191188 4515) (string-bytes 1 5871195) (vectors 16 85927) (vector-slots 8 1767057 55194) (floats 8 552 237) (intervals 56 893 469) (buffers 992 18))