Package: emacs;
Reported by: Sam Halliday <sam.halliday <at> gmail.com>
Date: Wed, 3 Apr 2019 11:20:01 UTC
Severity: normal
Found in version 26.1
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Sam Halliday <sam.halliday <at> gmail.com> To: bug-gnu-emacs <at> gnu.org Subject: 26.1; narrow-to-region loses word-start/symbol-start information at end Date: Wed, 03 Apr 2019 12:19:08 +0100
If the function `narrow-to-region' (as it is in `looking-back') is used to restrict the region prior to an invocation of re-search-forward or looking-at, then zero length regexp patterns are lost at the boundaries. It is unclear if this is a bug or an undocumented feature, but it has consequences for lexers that must operate backwards (such as those used by SMIE). In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.7) of 2019-03-17 built on juergen Windowing system distributor 'The X.Org Foundation', version 11.0.12004000 System Description: Arch Linux Recent messages: Mark set You did not specify a variable Type "q" to restore previous buffer. [2 times] C-x <down> is undefined funcall-interactively: Beginning of buffer [2 times] Quit Mark set Quit Configured using: 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib --localstatedir=/var --with-x-toolkit=gtk3 --with-xft --with-modules 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now' Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 MODULES THREADS LIBSYSTEMD LCMS2 Important settings: value of $LANG: en_GB.utf8 locale-coding-system: utf-8-unix Major mode: Emacs-Lisp Minor modes in effect: auto-insert-mode: t global-magit-file-mode: t diff-auto-refine-mode: t magit-auto-revert-mode: t global-git-commit-mode: t async-bytecomp-package-mode: t whitespace-mode: t rainbow-delimiters-mode: t smartparens-strict-mode: t 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/usr/share/emacs/site-lisp/notmuch-tree /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-tag hides /usr/share/emacs/site-lisp/notmuch-tag /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-show hides /usr/share/emacs/site-lisp/notmuch-show /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-query hides /usr/share/emacs/site-lisp/notmuch-query /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-print hides /usr/share/emacs/site-lisp/notmuch-print /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-parser hides /usr/share/emacs/site-lisp/notmuch-parser /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-mua hides /usr/share/emacs/site-lisp/notmuch-mua /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-message hides /usr/share/emacs/site-lisp/notmuch-message /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-maildir-fcc hides /usr/share/emacs/site-lisp/notmuch-maildir-fcc /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-lib hides /usr/share/emacs/site-lisp/notmuch-lib /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-jump hides /usr/share/emacs/site-lisp/notmuch-jump /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-hello hides /usr/share/emacs/site-lisp/notmuch-hello /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-draft hides /usr/share/emacs/site-lisp/notmuch-draft /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-crypto hides /usr/share/emacs/site-lisp/notmuch-crypto /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-compat hides /usr/share/emacs/site-lisp/notmuch-compat /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-company hides /usr/share/emacs/site-lisp/notmuch-company /home/fommil/.emacs.d/elpa/notmuch-0.28.3/notmuch-address hides /usr/share/emacs/site-lisp/notmuch-address /home/fommil/.emacs.d/elpa/notmuch-0.28.3/coolj hides /usr/share/emacs/site-lisp/coolj Features: (shadow sort mail-extr emacsbug sendmail completion cl-print debug hippie-exp tabify help-at-pt finder lisp-mnt jka-compr eieio-opt speedbar sb-image ezimage dframe help-fns radix-tree pulse git-gutter haskell-doc inf-haskell haskell-decl-scan haskell haskell-completions haskell-load haskell-commands highlight-uses-mode haskell-modules haskell-sandbox haskell-navigate-imports haskell-repl haskell-svg haskell-collapse hideshow haskell-debug haskell-interactive-mode haskell-presentation-mode haskell-hoogle haskell-process haskell-session sql view ag vc-svn find-dired vc-git smartparens-javascript js smartparens-html sgml-mode dom goto-chg misearch multi-isearch network-stream starttls url-cache github-review s bug-reference highlight-symbol magit-extras yatemplate autoinsert 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 tls gnutls url-gw nsm url-auth url url-proxy url-privacy url-expand url-methods url-history 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darcula-theme ox-gfm ox-md ox-odt rng-loc rng-uri rng-parse rng-match rng-dt rng-util rng-pttrn nxml-parse nxml-ns nxml-enc xmltok nxml-util ox-latex ox-icalendar ox-html table ox-ascii ox-publish ox org-element avl-tree generator org org-macro org-footnote org-pcomplete org-list org-faces org-entities org-version ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-comint org-loaddefs cal-menu calendar cal-loaddefs ob-exp ob-core org-compat ob-eval org-macs graphviz-dot-mode package-utils pcase fommil-manuscripts fommil-scala cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs fommil-haskell hlint-refactor haskell-compile haskell-mode haskell-cabal haskell-utils haskell-font-lock haskell-indentation haskell-string haskell-sort-imports haskell-lexeme haskell-align-imports haskell-compat haskell-complete-module haskell-ghc-support noutline outline flymake-proc flymake warnings etags dabbrev haskell-customize fommil-email erc-hl-nicks color erc-button erc-fill erc-stamp wid-edit erc-goodies erc erc-backend erc-compat pp re-builder flycheck-cask flycheck json map find-func rx subr-x dash cl hydra lv hl-todo tramp-cache tramp-sh tramp tramp-compat tramp-loaddefs trampver ucs-normalize shell pcomplete parse-time format-spec projectile grep compile comint ansi-color ibuf-ext ibuffer ibuffer-loaddefs thingatpt flx-ido advice flx ido persistent-scratch midnight xref project ring dired dired-loaddefs diminish cap-words superword subword edmacro kmacro cl-extra help-mode saveplace autorevert filenotify use-package use-package-ensure use-package-delight use-package-diminish use-package-bind-key bind-key easy-mmode use-package-core finder-inf ess-generics info package easymenu epg-config url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache url-vars seq byte-opt gv bytecomp byte-compile cconv cl-loaddefs cl-lib time-date mule-util 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 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 739335 331995) (symbols 48 55040 2) (miscs 40 697 5902) (strings 32 200805 34113) (string-bytes 1 5847037) (vectors 16 94852) (vector-slots 8 2205971 335526) (floats 8 388 2086) (intervals 56 9116 3117) (buffers 992 39)) -- Best regards, Sam
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