--text follows this line-- While moving cursor in frame, part or whole frame will become blank. Emacs 26 have same bug, Emacs 25 is ok. In GNU Emacs 27.1 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95)) of 2020-08-12 built on builder10-14.porkrind.org Windowing system distributor 'Apple', version 10.3.1894 System Description: Mac OS X 10.15.5 Recent messages: Wrote /Users/fangyu/.eshell/alias Saving file /Users/fangyu/.eshell/alias... Wrote /Users/fangyu/.eshell/alias [yas] Prepared just-in-time loading of snippets successfully. For information about GNU Emacs and the GNU system, type C-h C-a. Package cl is deprecated next-line: End of buffer auto trimmed 0 chars next-line: End of buffer [5 times] is undefined Configured using: 'configure --with-ns '--enable-locallisppath=/Library/Application Support/Emacs/${version}/site-lisp:/Library/Application Support/Emacs/site-lisp' --with-modules' Configured features: NOTIFY KQUEUE ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS MODULES THREADS JSON PDUMPER Important settings: value of $LANG: zh_CN.UTF-8 locale-coding-system: utf-8-unix Major mode: Lisp Interaction Minor modes in effect: linum-mode: t goto-address-mode: t column-enforce-mode: t global-anzu-mode: t anzu-mode: t show-smartparens-global-mode: t show-smartparens-mode: t smartparens-global-mode: t smartparens-mode: t volatile-highlights-mode: t delete-selection-mode: t helm-gtags-mode: t helm-mode: t helm-ff-cache-mode: t helm-autoresize-mode: t helm--remap-mouse-mode: t async-bytecomp-package-mode: t highlight-symbol-mode: t winner-mode: t global-company-mode: t company-mode: t shell-dirtrack-mode: t yas-global-mode: t yas-minor-mode: t ws-butler-mode: t clean-aindent-mode: t global-diff-hl-mode: t save-place-mode: t recentf-mode: t global-hl-line-mode: t global-auto-revert-mode: t workgroups-mode: t cl-old-struct-compat-mode: t tooltip-mode: t global-eldoc-mode: t eldoc-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 auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t size-indication-mode: t column-number-mode: t line-number-mode: t transient-mark-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message rmc puny rfc822 mml mml-sec epa derived epg epg-config gnus-util rmail rmail-loaddefs 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 helm-command helm-elisp helm-eval edebug backtrace helm-info zygospore linum goto-addr column-enforce-mode company-oddmuse company-keywords company-etags company-gtags company-dabbrev-code company-dabbrev company-files company-clang company-template company-capf company-cmake company-bbdb company-c-headers server function-args semantic-directory semantic/ia semantic/analyze/refs semantic/db-find semantic/db-ref semantic/senator semantic/decorate semantic/analyze semantic/sort semantic/scope semantic/analyze/fcn semantic/db eieio-base semantic/ctxt semantic/format semantic/tag-ls semantic/find semantic/util-modes semantic/util semantic semantic/tag semantic/lex semantic/fw cedet ivy ivy-faces ivy-overlay colir unicad duplicate-thing iedit iedit-lib anzu smartparens-config smartparens-text smartparens-python smartparens-c smartparens dtrt-indent volatile-highlights delsel setup-editing setup-helm-gtags helm-gtags pulse which-func setup-helm helm-mode helm-files helm-buffers helm-occur helm-tags helm-locate helm-types helm-swoop helm-grep helm-regexp helm-utils helm-help helm async-bytecomp helm-global-bindings helm-easymenu helm-source eieio-compat helm-multi-match helm-lib async helm-config setup-help color-theme-sanityinc-tomorrow color highlight-symbol setup-faces-and-ui winner setup-environment setup-development vc-svn cl em-alias esh-mode eshell esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg esh-module esh-groups esh-util setup-applications slime-company company slime-banner slime-fancy slime-indentation slime-cl-indent cl-indent slime-trace-dialog slime-fontifying-fu slime-package-fu slime-references slime-compiler-notes-tree slime-scratch slime-presentations bridge slime-macrostep macrostep slime-mdot-fu slime-enclosing-context slime-fuzzy slime-fancy-trace slime-fancy-inspector slime-c-p-c slime-editing-commands slime-autodoc slime-repl slime-parse slime arc-mode archive-mode noutline outline pp hyperspec python-el-fgallina-expansions python tramp-sh tramp tramp-loaddefs trampver tramp-integration files-x tramp-compat shell pcomplete parse-time iso8601 time-date ls-lisp format-spec php-auto-yasnippets yasnippet php-mode mode-local imenu speedbar sb-image ezimage dframe etags fileloop generator xref project cc-langs cc-mode-expansions cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs php-face php php-project flymake-proc flymake warnings ws-butler clean-aindent-mode flycheck find-func rx diff-hl vc-dir ewoc vc vc-dispatcher diff-mode compile setup-programming setup-communication shell-pop term disp-table comint ansi-color ehelp setup-external saveplace setup-data setup-text ztree-dir ztree-diff easy-mmode ztree-diff-model ztree-view ztree-util recentf-ext recentf tree-widget wid-edit wdired dired-x dired dired-loaddefs setup-files expand-region text-mode-expansions er-basic-expansions thingatpt expand-region-core expand-region-custom windmove hl-line autorevert filenotify setup-convenience mylib custom-built-in-functions pcase cl-extra help-mode workgroups2 advice ring dash grandshell-theme finder-inf edmacro kmacro slime-autoloads w3m-load info package easymenu browse-url 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 china-util tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type 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 elisp-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame minibuffer 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 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 kqueue cocoa ns multi-tty make-network-process emacs) Memory information: ((conses 16 364570 261463) (symbols 48 35491 6) (strings 32 107884 27462) (string-bytes 1 3710839) (vectors 16 53606) (vector-slots 8 729597 204068) (floats 8 406 572) (intervals 56 508 520) (buffers 1000 14))