[debbugs-tracker] bug#30664: closed (25.2; eww-download corrupts PDF files (and probably other binary files too))

[GNU bug Tracking System]

Your message dated Fri, 02 Mar 2018 10:46:05 +0200
with message-id <address@hidden>
and subject line Re: bug#30664: 25.2; eww-download corrupts PDF files (and 
probably other binary files too)
has caused the debbugs.gnu.org bug report #30664,
regarding 25.2; eww-download corrupts PDF files (and probably other binary 
files too)
to be marked as done.

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address@hidden)


-- 
30664: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=30664
GNU Bug Tracking System
Contact address@hidden with problems
> --- Begin Message ---
>
>
>
> Subject: 
>
> 25.2; eww-download corrupts PDF files (and probably other binary files too)
>
>
>
>
> Date: 
>
> Thu, 01 Mar 2018 09:58:30 -0600
>
>
>
>
> I tried using eww-download (bound to `d` in eww buffers) to download a
> PDF file. This produced, as expected a file in my downloads directory,
> but I could not open it in my PDF reader. I immediately suspected that
> Emacs had done some unwanted coding system translation on the PDF file.
>
> The variable `last-coding-system-used` was set to `raw-text-dos` (I'm
> using Emacs 25.2 on Windows 10), and the `dos` part sounded suspicious
> to me. Adding the item `("\\.pdf\\'" no-conversion . no-conversion)` to
> the variable `file-coding-system-alist` and redownloading the file fixed
> the problem and produced a valid PDF file.
>
> I'm not sure adding that entry to the default value of
> `file-coding-system-alist` is the right way to solve this problem
> though, because where does it stop? Would we add all known binary file
> types to the list with `no-conversion` specifications? I think it 
> might be best to modify the function `eww-download-callback` to
> save the downloaded file with no-conversion either always or in certain
> cases. Maybe the HTTP response can be inspected and if the type is not
> text/something to use no-conversion.
>
>
>
> In GNU Emacs 25.2.1 (i686-w64-mingw32)
>  of 2017-04-24 built on LAPHROAIG
> Windowing system distributor 'Microsoft Corp.', version 10.0.16299
> Configured using:
>  'configure --host=i686-w64-mingw32 --without-dbus
>  --without-compress-install 'CFLAGS=-static -O2 -g3''
>
> Configured features:
> XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
> TOOLKIT_SCROLL_BARS
>
> Important settings:
>   value of $LANG: ENU
>   locale-coding-system: cp1252
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
>   recentf-mode: t
>   rainbow-delimiters-mode: t
>   which-key-mode: t
>   smartparens-global-mode: t
>   smartparens-mode: t
>   ivy-mode: t
>   global-gobble-whitespace-mode: t
>   override-global-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
>   blink-cursor-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>
> Recent messages:
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> Loading em-term...done
> Loading em-unix...done
> History item: 128
> No matches
> History item: 128
> Mark saved where search started
> Delete julia-0.6.1-win32.exe (y or n) y
> Deleting...done
> Quit
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> c:/Users/oanto/Emacs-25.2/share/emacs/25.2/lisp/org/ob-asymptote
>
> Features:
> (shadow sort bbdb-message mail-extr emacsbug message idna rfc822 mml
> mml-sec epg mm-decode mm-bodies mm-encode gmm-utils mailheader sendmail
> pcmpl-unix em-unix em-term term ehelp em-script em-prompt em-ls em-hist
> em-pred em-glob em-dirs em-cmpl em-basic em-banner em-alias pcomplete
> esh-var esh-io esh-cmd esh-opt esh-ext esh-proc esh-arg esh-groups
> eshell esh-module esh-mode dired-aux wdired macros mc-prompt-once
> 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 dabbrev misc-text executable
> two-column iso-transl ace-window eieio-opt speedbar sb-image ezimage
> dframe find-func doc-view jka-compr image-mode parse-time recentf
> tree-widget bookmark pp network-stream nsm starttls url-http tls gnutls
> mail-parse rfc2231 rfc2047 rfc2045 ietf-drums url-gw url-cache url-auth
> eww mm-url bbdb-mua bbdb-com crm mailabbrev bbdb bbdb-site timezone gnus
> gnus-ems nnheader mail-utils url-queue url url-proxy url-privacy
> url-expand url-methods url-history url-cookie url-domsuf url-util
> mailcap shr dom subr-x browse-url format-spec colir color smex ido
> counsel dired compile comint ansi-color esh-util etags xref project
> swiper rainbow-delimiters which-key smartparens-config smartparens
> advice dash cus-edit cus-start cus-load wid-edit ivy-hydra ivy delsel
> ivy-overlay ffap thingatpt url-parse auth-source eieio eieio-core
> gnus-util mm-util help-fns mail-prsvr password-cache url-vars ace-link
> avy hydra ring lv gobble-whitespace edmacro kmacro diminish cl-macs
> cl-seq use-package use-package-ensure use-package-delight
> use-package-diminish use-package-bind-key bind-key easy-mmode
> use-package-core finder-inf tex-site slime-autoloads info package
> epg-config seq byte-opt gv bytecomp byte-compile cl-extra help-mode
> easymenu cconv cl-loaddefs pcase cl-lib time-date mule-util tooltip
> eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel
> dos-w32 ls-lisp disp-table w32-win w32-vars term/common-win tool-bar dnd
> fontset image regexp-opt fringe tabulated-list newcomment elisp-mode
> lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
> scroll-bar mouse jit-lock font-lock syntax facemenu font-core 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 charscript
> case-table epa-hook jka-cmpr-hook help simple abbrev 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 w32notify w32 multi-tty
> make-network-process emacs)
>
> Memory information:
> ((conses 8 346633 45907)
>  (symbols 32 39136 0)
>  (miscs 32 154 602)
>  (strings 16 91623 67578)
>  (string-bytes 1 2621517)
>  (vectors 8 42157)
>  (vector-slots 4 1449017 44142)
>  (floats 8 541 810)
>  (intervals 28 531 1239)
>  (buffers 520 48))
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#30664: 25.2; eww-download corrupts PDF files (and probably other binary files too)
>
>
>
>
> Date: 
>
> Fri, 02 Mar 2018 10:46:05 +0200
>
>
>
>
> > From: Omar Antolín Camarena <address@hidden>
> > Date: Thu, 1 Mar 2018 15:24:27 -0600
> > 
> > I tested it and yes, that patch does fix the problem for me.
>
> Thanks, I installed that on the emacs-26 branch, and I'm closing the
> bug report.
>
>
> --- End Message ---