bug#30363: 26.0.91; epa-decrypt-file not using epa-pinentry-mode

[Rajeev Narang]

(setq epa-pinentry-mode 'loopback)

epa-decrypt-file (:d in dired mode) does not ask for the password in the 
minibuffer.

in comparison, epa-sign-region does ask for the password in the minibuffer.


In GNU Emacs 26.0.91 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
 of 2018-02-03 built on hp
Repository revision: f589f5ae6e19210b8520526fa3111243ca446b02
Windowing system distributor 'The X.Org Foundation', version 11.0.11902000
System Description:     Debian GNU/Linux 9.3 (stretch)

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Running git --no-pager diff-index --relative -z -M HEAD -- . in background... 
done
Running git --no-pager ls-files -z -c -s -- . in background... done
Running git --no-pager ls-files -z -o --directory --no-empty-directory 
--exclude-standard -- . in background... done
Hiding up-to-date and ignored items
Quit
Configured using:
 'configure --prefix=/home/rajeev/tmp/build/emacs --with-modules
 --with-x-toolkit --with-xwidgets 'CPPFLAGS= -I/usr/local/include
 -I/usr/include/dvdnav' 'LDFLAGS= -L/usr/local/lib''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL GNUTLS LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11
MODULES THREADS XWIDGETS LCMS2

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Shell

Minor modes in effect:
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  editorconfig-mode: t
  global-semanticdb-minor-mode: t
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  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
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  erc-button-mode: t
  erc-fill-mode: t
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  erc-networks-mode: t
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  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  diff-auto-refine-mode: t
  buffer-face-mode: t
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  shell-dirtrack-mode: t
  xterm-mouse-mode: t
  which-function-mode: t
  icomplete-mode: t
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  cl-old-struct-compat-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Load-path shadows:
None found.

Features:
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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
xwidget-internal move-toolbar gtk x-toolkit x multi-tty
make-network-process emacs)

Memory information:
((conses 16 1026844 152317)
 (symbols 48 68857 42)
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 (strings 32 244698 15609)
 (string-bytes 1 7504233)
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