Re: Documenting gpg-agent

[Daiki Ueno <ueno@unixuser.org>]

>>>>> In <E1Gyt4c-0005JD-8J@fencepost.gnu.org> 
>>>>>	Richard Stallman <rms@gnu.org> wrote:
>     Since allout exploits the use of PGG's passphrase handling functions to
>     provide a custom passphrase handling, it's not a bug in PGG or gpg-agent,
>     I think.

> I am not convinced of that.  He says that PGG was ignoring the
> passphrases that allout passes in.  Why isn't that a bug?

I'm sorry for that I misunderstood his explanation and the current
gpg-agent support of PGG.  I just looked at the code and found it
actually has a bug.  PGG checks whether to use a given passphrase or
gpg-agent two times, for the first time a given passphrase wins, but for
the second time gpg-agent wins.  Here is a tiny patch to fix this.

Sascha, can you check this?

Index: lisp/pgg-gpg.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/pgg-gpg.el,v
retrieving revision 1.19
diff -c -r1.19 pgg-gpg.el
*** lisp/pgg-gpg.el	17 Dec 2006 23:18:36 -0000	1.19
--- lisp/pgg-gpg.el	26 Dec 2006 01:00:29 -0000
***************
*** 61,67 ****
    "GnuPG ID of your default identity.")
  
  (defun pgg-gpg-process-region (start end passphrase program args)
!   (let* ((use-agent (pgg-gpg-use-agent-p)) 
  	 (output-file-name (pgg-make-temp-file "pgg-output"))
  	 (args
  	  `("--status-fd" "2"
--- 61,67 ----
    "GnuPG ID of your default identity.")
  
  (defun pgg-gpg-process-region (start end passphrase program args)
!   (let* ((use-agent (and (null passphrase) (pgg-gpg-use-agent-p)))
  	 (output-file-name (pgg-make-temp-file "pgg-output"))
  	 (args
  	  `("--status-fd" "2"

-- 
Daiki Ueno