Why does gpg.program work for commit but not log?

jpyeron@black /projects/microsoft-smartcard-sign/tmp $ git --version git version 1.7.9 jpyeron@black /projects/microsoft-smartcard-sign/tmp $ GIT_TRACE=1 git commit -S -m 'bin' trace: built-in: git 'commit' '-S' '-m' 'bin' trace: run_command: '/projects/microsoft-smartcard-sign/tmp/bin/logginggpg.sh' '-bsau' 'Jason Pyeron <jpyeron+test3@pdinc.us>' gpg: WARNING: using insecure memory! gpg: please see http://www.gnupg.org/documentation/faqs.html for more information

You need a passphrase to unlock the secret key for user: "Jason Pyeron <jpyeron+test3@pdinc.us>" 2048-bit RSA key, ID 54D0E8E4, created 2014-06-18

[master 38afa1f] bin
 1 files changed, 19 insertions(+), 0 deletions(-)
 create mode 100755 bin/logginggpg.sh

jpyeron@black /projects/microsoft-smartcard-sign/tmp
$ GIT_TRACE=1 git log --show-signature
trace: built-in: git 'log' '--show-signature'
trace: run_command: 'less'
trace: exec: 'less'
trace: run_command: 'gpg' '--verify' '/tmp/.git_vtag_tmpNLFqtm' '-'
commit 38afa1f4d0c73fd47d5788310a1a2080aa0abbba
gpg: WARNING: using insecure memory!
gpg: please see http://www.gnupg.org/documentation/faqs.html for more
information
gpg: Signature made Wed, Jun 18, 2014  0:11:40 EDT using RSA key ID 54D0E8E4
gpg: Good signature from "Jason Pyeron <jpyeron+test3@pdinc.us>"
Author: Jason Pyeron <jpyeron+test3@pdinc.us>
Date:   Wed Jun 18 00:11:40 2014 -0400

    bin
trace: run_command: 'gpg' '--verify' '/tmp/.git_vtag_tmp41t6O6' '-'

commit 174d4544627883c4b03a9b888c2d2c127accefa5
gpg: WARNING: using insecure memory!
gpg: please see http://www.gnupg.org/documentation/faqs.html for more
information
gpg: Signature made Wed, Jun 18, 2014  0:08:39 EDT using RSA key ID 54D0E8E4
gpg: Good signature from "Jason Pyeron <jpyeron+test3@pdinc.us>"
Author: Jason Pyeron <jpyeron+test3@pdinc.us>
Date:   Wed Jun 18 00:08:39 2014 -0400

    loged signed commit
trace: run_command: 'gpg' '--verify' '/tmp/.git_vtag_tmpo6b0D3' '-'

commit 4f7ad8a8f38b06d675ac5196c80b1a26ecbee433
gpg: WARNING: using insecure memory!
gpg: please see http://www.gnupg.org/documentation/faqs.html for more
information
gpg: Signature made Tue, Jun 17, 2014 23:18:01 EDT using RSA key ID 54D0E8E4
gpg: Good signature from "Jason Pyeron <jpyeron+test3@pdinc.us>"
Author: Jason Pyeron <jpyeron+test3@pdinc.us>
Date:   Tue Jun 17 23:17:55 2014 -0400

    test signed commit

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- Jason Pyeron                      PD Inc. http://www.pdinc.us -
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On Wed, Jun 18, 2014 at 12:18:35AM -0400, Jason Pyeron wrote:

That's rather old. In the meantime we have:

	commit 6005dbb9bf21d10b209f7924e305bd04b9ab56d2
	Author: Jacob Sarvis <jsarvis@openspan.com>
	Date:   Wed Mar 27 10:13:39 2013 -0500
	
	    log: read gpg settings for signed commit verification
	    
	    "show --show-signature" and "log --show-signature" do not read the
	    gpg.program setting from git config, even though, commit signing,
	    tag signing, and tag verification honor it.

which is in v1.8.3. In general, please double-check your problem against a recent version of "master" when making a bug report.

-Peff

I will (try to) compile master and test. This is the latest version in cygwin.

--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-                                                               -
- Jason Pyeron                      PD Inc. http://www.pdinc.us -
- Principal Consultant              10 West 24th Street #100    -
- +1 (443) 269-1555 x333            Baltimore, Maryland 21218   -
-                                                               -
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
This message is copyright PD Inc, subject to license 20080407P00.

On Wed, Jun 18, 2014 at 08:38:32AM -0400, Jason Pyeron wrote:

To save you some trouble, I actually found that commit by reproducing your problem on Linux and bisecting. So I'm fairly sure it will fix it for you. :)

You may want to bug the cygwin packagers about updating their version of git. v1.7.9 is two and a half years old, and since then we have many bugfixes, including some which are specifically targeted at cygwin (which can only lead me to assume a lot of people are building from source on cygwin).

-Peff

--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-                                                               -
- Jason Pyeron                      PD Inc. http://www.pdinc.us -
- Principal Consultant              10 West 24th Street #100    -
- +1 (443) 269-1555 x333            Baltimore, Maryland 21218   -
-                                                               -
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
This message is copyright PD Inc, subject to license 20080407P00.

Ok, so now I will be using locally compiled git. 

jpyeron@black /projects/microsoft-smartcard-sign/tmp $ /projects/git/local-build/bin/git --version git version 1.8.4.21.g992c386

jpyeron@black /projects/microsoft-smartcard-sign/tmp $ GIT_TRACE=1 /projects/git/local-build/bin/git log --show-signature trace: built-in: git 'log' '--show-signature' trace: run_command: 'less' trace: exec: 'less' trace: run_command: '/projects/microsoft-smartcard-sign/tmp/bin/logginggpg.sh' '--status-fd=1' '--verify' '/tmp/.git_vtag_tmp66WxpM' '-' commit 38afa1f4d0c73fd47d5788310a1a2080aa0abbba