Package: emacs;
Reported by: Tom Regner <tom <at> goochesa.de>
Date: Thu, 7 May 2020 08:18:02 UTC
Severity: normal
Tags: patch
Found in version 27.0.91
Done: Eli Zaretskii <eliz <at> gnu.org>
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bug-gnu-emacs <at> gnu.org:bug#41122; Package emacs.
(Thu, 07 May 2020 08:18:02 GMT) Full text and rfc822 format available.Tom Regner <tom <at> goochesa.de>:bug-gnu-emacs <at> gnu.org.
(Thu, 07 May 2020 08:18:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Tom Regner <tom <at> goochesa.de> To: bug-gnu-emacs <at> gnu.org Subject: 27.0.91; [Patch] 'Attempt to shape unibyte char' when using ligatures Date: Thu, 07 May 2020 10:17:26 +0200
[Message part 1 (text/plain, inline)]
Hello, sometimes an emacs frame 'freezes' when a buffer with ligatures is created with the message 'Attempt to shape unibyte char'. Killing the buffer from another frame 'unfreezes' the affected frame. I found a patch (created in 2016) here: https://github.com/tonsky/FiraCode/files/107350/unibyte.diff.txt I manually applied the changes to the current (as of this writing) state of the emacs27 branch. It compiles cleanly and solves the problem -- a freshly compiled emacs27 branch (27.0.91) did freeze all code buffers I tried to create without the changes; no freezes compiled with the attached patch. Please consider applying this patch, or to fix the problem in another way. Thank you for your work on Emacs -- my daily life (work and private) would be a lot worse without it. kind regards, Tom -------------------------------- emacs info ---------------------- In GNU Emacs 27.0.91 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.30) of 2020-05-07 built on cranston Repository revision: 76516465bff31d35ea93bcb2badb14c642bb5767 Repository branch: emacs-27 Windowing system distributor 'The X.Org Foundation', version 11.0.11906000 System Description: Ubuntu 18.04.4 LTS Recent messages: LSP :: jsts-ls:17101 initialized successfully Menu-Bar mode disabled Menu Bar mode disabled. Use M-x menu-bar-mode to make the menu bar appear. Making font-lock-function buffer-local while locally let-bound! Making poly-lock-allow-fontification buffer-local while locally let-bound! Select Projectile command [?DRTVabdefgjkorsv]: f File mode specification error: (wrong-type-argument hash-table-p nil) Quit Vterm needs `vterm-module' to work. Compile it now? (y or n) y Compilation of ‘emacs-libvterm’ module succeeded Configured using: 'configure --with-json' Configured features: XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS GLIB NOTIFY INOTIFY GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS JSON PDUMPER LCMS2 GMP Important settings: value of $LC_MONETARY: de_DE.UTF-8 value of $LC_NUMERIC: de_DE.UTF-8 value of $LC_TIME: de_DE.UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: O Minor modes in effect: poly-org-mode: t bug-reference-mode: t global-magit-file-mode: t magit-file-mode: t magit-wip-initial-backup-mode: t magit-wip-before-change-mode: t magit-wip-after-apply-mode: t magit-wip-after-save-mode: t magit-wip-after-save-local-mode: t magit-wip-mode: t magit-auto-revert-mode: t global-git-commit-mode: t async-bytecomp-package-mode: t dap-tooltip-mode: t which-key-posframe-mode: t volatile-highlights-mode: t all-the-icons-ibuffer-mode: t 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magithub-label magithub-user magithub-core magithub-faces magithub-settings bug-reference ghub+ apiwrap apropos ghub-graphql treepy gsexp ghub magit-bookmark magit-submodule magit-obsolete magit-popup 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 magit-core magit-autorevert magit-margin magit-transient magit-process magit-mode git-commit transient magit-git magit-section benchmark magit-utils which-func crm log-edit message rfc822 mml mml-sec epa gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader pcvs-util with-editor async-bytecomp async server outline-magic sql-indent yaml-mode nodejs-repl php-doc-block dap-mouse dap-php dap-utils php-mode mode-local etags fileloop add-log cc-langs php-face php php-project flymake-proc flymake speedbar sb-image ezimage dframe elixir-mode elixir-format pkg-info url-http url-auth mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums mail-prsvr url-gw elixir-smie smie company-capf lsp-ivy lsp-origami origami origami-parsers lsp-ui lsp-ui-flycheck lsp-ui-doc goto-addr lsp-ui-imenu lsp-ui-peek lsp-ui-sideline flycheck lsp-clients lsp linum-relative linum display-line-numbers which-key-posframe posframe popup-imenu popup aql-mode polymode poly-lock polymode-base polymode-weave polymode-export polymode-compat polymode-methods polymode-core polymode-classes eieio-custom eieio-base volatile-highlights dired-x repl-toggle expand-region text-mode-expansions cc-mode-expansions the-org-mode-expansions js-mode-expansions flyspell-correct-ivy flyspell-correct all-the-icons-ibuffer mini-frame which-key boon-qwerty boon boon-moves er-basic-expansions expand-region-core expand-region-custom boon-search boon-keys boon-main boon-arguments multiple-cursors mc-hide-unmatched-lines-mode mc-separate-operations rectangular-region-mode mc-mark-pop mc-mark-more mc-cycle-cursors mc-edit-lines multiple-cursors-core rect boon-regs boon-utils boon-core circe-color-nicks circe lui-irc-colors irc make-tls-process tls gnutls lcs lui-format lui tracking shorten flyspell ispell circe-compat company-postgresql emacsql-psql emacsql emacsql-compiler yequake org-popnote ob-mermaid ob-sql-mode sql view ob-plantuml ob-http ob-http-mode ob-gnuplot ob-lisp ob-sass ob-ditaa ob-shell plantuml-mode alert log4e notifications dbus ido-completing-read+ flx-ido minibuf-eldef ido xml gntp beacon doom-modeline doom-modeline-segments let-alist doom-modeline-env doom-modeline-core shrink-path cyphejor rainbow-delimiters dashboard dashboard-widgets time recentf page-break-lines diff-hl face-remap vc-hg vc-git vc-dir vc vc-dispatcher diff-mode color-theme-approximate modus-vivendi-theme icons-in-terminal font-lock+ org-projectile org-category-capture org-capture company-box company-box-doc company-box-icons company em-smart esh-mode em-term term disp-table ehelp eshell esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg esh-module esh-groups popwin undo-tree diff fullframe all-the-icons-ivy all-the-icons-ivy-rich all-the-icons all-the-icons-faces data-material data-weathericons data-octicons data-fileicons data-faicons data-alltheicons memoize ivy-rich treemacs-bookmarks bookmark text-property-search pp counsel-projectile counsel xdg swiper ivy flx delsel ivy-overlay colir hook-helpers tramp tramp-loaddefs trampver tramp-integration files-x tramp-compat shell parse-time iso8601 ls-lisp paren persp-mode-projectile-bridge projectile skeleton ibuf-macs find-dired dired dired-loaddefs grep ibuf-ext ibuffer ibuffer-loaddefs persp-mode golden-ratio engine-mode elec-pair dap-ui lsp-treemacs treemacs treemacs-header-line treemacs-compatibility treemacs-mode treemacs-interface treemacs-extensions treemacs-persistence treemacs-mouse-interface treemacs-tag-follow-mode hydra treemacs-filewatch-mode treemacs-tags treemacs-follow-mode treemacs-rendering treemacs-async treemacs-workspaces treemacs-dom treemacs-visuals treemacs-fringe-indicator treemacs-scope pulse treemacs-faces treemacs-icons treemacs-themes treemacs-core-utils pfuture ace-window avy hl-line treemacs-macros treemacs-logging treemacs-customization gdb-mi gud bui bui-list bui-info bui-entry bui-core bui-history bui-button bui-utils cus-edit dap-mode dap-overlays lsp-mode elixir-yasnippets es-mode request autorevert mail-utils url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf mailcap js cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs yasnippet cl-extra help-mode xref project url-util tree-widget wid-edit spinner cl network-stream puny nsm rmc markdown-mode derived color thingatpt lv inline imenu ht filenotify ewoc em-glob esh-util dash-functional compile bindat cus-start cus-load netrc jka-compr auto-compile packed gnu-elpa-keyring-update epg epg-config pallet tex-site slime-autoloads w3m-load warnings cask cask-bootstrap ansi package-recipe-mode package-build-badges package-build package-recipe pcase eieio-compat lisp-mnt shut-up epl rx git commander f dash s finder-inf info package browse-url url-handlers url-parse auth-source eieio eieio-core cl-macs eieio-loaddefs password-cache json map url-vars seq byte-opt gv bytecomp byte-compile cconv edmacro kmacro org-element cl-seq avl-tree generator org advice org-macro org-footnote org-pcomplete pcomplete org-list org-faces org-entities time-date subr-x noutline outline easy-mmode org-version ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint comint ansi-color ring ob-core ob-eval org-compat org-macs org-loaddefs format-spec find-func cal-menu easymenu calendar cal-loaddefs 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 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 dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty make-network-process emacs) Memory information: ((conses 16 1947873 2965598) (symbols 48 83693 2) (strings 32 323317 188369) (string-bytes 1 13015498) (vectors 16 84039) (vector-slots 8 1725288 536404) (floats 8 1274 1632) (intervals 56 9505 2526) (buffers 1000 35)) -- Tom Regner
[emacs_ligatures_unibyte.patch (text/x-diff, attachment)]
Eli Zaretskii <eliz <at> gnu.org>:Tom Regner <tom <at> goochesa.de>:Message #10 received at 41122-done <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tom Regner <tom <at> goochesa.de> Cc: 41122-done <at> debbugs.gnu.org Subject: Re: bug#41122: 27.0.91; [Patch] 'Attempt to shape unibyte char' when using ligatures Date: Thu, 07 May 2020 15:40:08 +0300
> Date: Thu, 07 May 2020 10:17:26 +0200
> From: Tom Regner <tom <at> goochesa.de>
>
> sometimes an emacs frame 'freezes' when a buffer with ligatures is
> created with the message 'Attempt to shape unibyte char'. Killing
> the buffer from another frame 'unfreezes' the affected frame.
This problem is already fixed on the master branch. (It is too late
to apply such changes to the emacs-27 release branch.)
> if (NILP (string))
> {
> - if (NILP (BVAR (current_buffer, enable_multibyte_characters)))
> - error ("Attempt to shape unibyte text");
> - validate_region (&from, &to);
> + validate_region (&from, &to);
> frompos = XFIXNAT (from);
> topos = XFIXNAT (to);
> - frombyte = CHAR_TO_BYTE (frompos);
> + if (!NILP (BVAR (current_buffer, enable_multibyte_characters)))
> + frombyte = CHAR_TO_BYTE (frompos);
> + else
> + {
> + ptrdiff_t pos;
> +
> + /* fill_gstring_header below uses
> + FETCH_CHAR_ADVANCE_NO_CHECK that assumes the current
> + buffer is multibyte, but it is safe as long as it only
> + fetches ASCII chars. */
> + for (pos = frompos; pos < topos; pos++)
> + if (!ASCII_BYTE_P (*(BYTE_POS_ADDR (pos))))
> + error ("Attempt to shape non-ASCII part of unibyte text");
> + frombyte = frompos;
This part is incorrect: unibyte buffers should not be subject to
character composition, even if the bytes found there happen to be
ASCII bytes.
> + else
> + {
> + ptrdiff_t pos;
> +
> + /* fill_gstring_header below uses
> + FETCH_STRING_CHAR_ADVANCE_NO_CHECK that assumes the
> + string is multibyte, but it is safe as long as it only
> + fetches ASCII chars. */
> + for (pos = frompos; pos < topos; pos++)
> + if (!ASCII_BYTE_P (SREF (string, pos)))
> + error ("Attempt to shape non-ASCII part of unibyte text");
> + frombyte = string_char_to_byte (string, frompos);
> + }
This part (or its moral equivalent) is already on the master branch.
Thanks.
Debbugs Internal Request <help-debbugs <at> gnu.org>
to internal_control <at> debbugs.gnu.org.
(Fri, 05 Jun 2020 11:24:04 GMT) Full text and rfc822 format available.
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