Open a dired buffer visiting a directory with SVG images. Mark some SVG
files then try to `dired-do-find-regexp-and-replace' in those files.

It fails due to `image-file-mode' turning all visited buffers as
read-only...



In GNU Emacs 25.1.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.22.7)
 of 2017-02-07 built on arojas
Windowing system distributor 'The X.Org Foundation', version
11.0.11901000
System Description:	Arch Linux

Configured using:
 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe
 -fstack-protector-strong' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: fr_FR.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Image[imagemagick]

Minor modes in effect:
  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:
For information about GNU Emacs and the GNU system, type C-h C-a.
Marking matching files...
48 matching files marked.
Type C-c C-c to view the image as text. [2 times]
Mark set
replace-match-maybe-edit: Text is read-only
Making completion list... [2 times]

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message idna format-spec rfc822 mml
mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils
image-mode find-dired semantic/fw mode-local find-func xref cl-seq
project eieio byte-opt bytecomp byte-compile cconv eieio-core cl-macs
gv
cl-extra help-mode easymenu grep compile comint ansi-color ring
dired-aux cl-loaddefs pcase cl-lib thingatpt dired time-date mule-util
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel x-win term/common-win x-dnd 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 dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 113568 8337)
 (symbols 48 21910 0)
 (miscs 40 133 179)
 (strings 32 21059 4609)
 (string-bytes 1 676212)
 (vectors 16 15375)
 (vector-slots 8 461447 4393)
 (floats 8 242 81)
 (intervals 56 1459 8)
 (buffers 976 25))

-- 
Matthias Meulien
www.delair-tech.com