Package: emacs;
Reported by: Benjamin Riefenstahl <Riefenstahl <at> mecom.de>
Date: Thu, 27 Jun 2019 10:14:02 UTC
Severity: minor
Found in version 26.0.90
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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From: Benjamin Riefenstahl <Riefenstahl <at> mecom.de> To: 36401 <at> debbugs.gnu.org Subject: bug#36401: 26.0.90; set-auto-mode uses case-insensitive match for magic-mode-alist Date: Thu, 27 Jun 2019 11:30:47 +0200
My use case: I use "magic-mode-alist" to detect a binary file type for which I have written a mode. The magic at the beginning is "mTFf", so it is simple ASCII, but unusually capitalized. When I add this to "magic-mode-alist", files and buffers that start with "mtff" are also put in my binary file mode. It turns out that "set-auto-mode" in lisp/files.el is the function that uses magic-mode-alist, and it just calls "looking-at" to test the type. Because "case-fold-search" is "t" by default, this catches files starting with "mtff". Is this intentional? If so, the documentation for "magic-mode-alist" should call this out, so users know they might need to work around it. If not, I could propose a patch to fix it. TIA, benny -- In GNU Emacs 26.0.90 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.14.5) of 2017-10-18 built on riefenstahl-linux Repository revision: b970a4a52a1c04afce4916ca2bf337e2b36d26c4 Windowing system distributor 'The X.Org Foundation', version 11.0.11604000 System Description: Debian GNU/Linux 8.11 (jessie) Recent messages: Mark set Saving file /home/riefenstahl/.emacs.cfg/local.riefenstahl-linux.el... Wrote /home/riefenstahl/.emacs.cfg/local.riefenstahl-linux.el (No changes need to be saved) Auto-saving...done Saving file /home/riefenstahl/.emacs.cfg/local.riefenstahl-linux.el... Wrote /home/riefenstahl/.emacs.cfg/local.riefenstahl-linux.el (No changes need to be saved) [6 times] Making completion list... Type "q" in help window to restore its previous buffer. Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 LCMS2 Important settings: value of $LANG: C.UTF-8 locale-coding-system: utf-8-unix Major mode: Emacs-Lisp Minor modes in effect: global-magit-file-mode: t magit-file-mode: t global-git-commit-mode: t async-bytecomp-package-mode: t desktop-save-mode: t display-time-mode: t diff-auto-refine-mode: t delete-selection-mode: t shell-dirtrack-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 column-number-mode: t line-number-mode: t transient-mark-mode: t Load-path shadows: ~/site-lisp/css-mode hides /usr/local/share/emacs/26.0.90/lisp/textmodes/css-mode Features: (shadow sort mail-extr emacsbug sendmail find-dired thingatpt eieio-opt speedbar sb-image ezimage dframe find-func ruler-mode hl-line hexl pp cl-print misearch multi-isearch help-fns arc-mode archive-mode benny-mtff-mode magit-obsolete magit-blame magit-stash magit-bisect magit-remote magit-commit magit-sequence magit-notes magit-worktree magit-tag magit-merge magit-branch magit-reset magit-collab ghub-graphql ghub url-http tls gnutls url-gw nsm url-auth url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf url-util mailcap let-alist json magit-files magit-refs magit-status magit magit-repos magit-apply magit-wip magit-log magit-diff smerge-mode magit-core magit-autorevert autorevert filenotify magit-process magit-margin magit-mode git-commit magit-git magit-section magit-utils crm subr-x magit-popup log-edit message-x message rmc puny rfc822 mml mml-sec epa epg gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev mail-utils gmm-utils mailheader pcvs-util add-log with-editor cl-extra help-mode async-bytecomp async dash elec-pair dired-aux make-mode time-date map sh-script smie executable desktop frameset highline ange-ftp generic-x cl autoinsert ps-print ps-print-loaddefs ps-def lpr dired dired-loaddefs benny-x-clipboard disp-table mm-util mail-prsvr time server protbuf solar cal-dst cal-islam cal-hebrew holidays hol-loaddefs vc-git diff-mode easy-mmode diary-lib diary-loaddefs cal-menu calendar cal-loaddefs which-func imenu jka-compr grep compile delsel cus-start cus-load generic benny-calendar-cfg derived cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs filecache benny-file-cache tramp-sh docker-tramp tramp-cache tramp tramp-compat tramp-loaddefs trampver ucs-normalize shell pcomplete comint ansi-color ring parse-time format-spec advice benny-unicode benny-tools browse-url autoload radix-tree lisp-mnt finder-inf gh-common marshal eieio-compat rx 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 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 418674 115456) (symbols 48 37479 2) (miscs 40 2593 3720) (strings 32 93366 4129) (string-bytes 1 2851917) (vectors 16 66469) (vector-slots 8 1822112 223144) (floats 8 700 564) (intervals 56 6177 3982) (buffers 992 36) (heap 1024 70067 2662))
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