Re: [Bug] git log --show-signature print extra carriage return ^M

[Larry Hunter <larhun.it@gmail.com>]

The same ^M is shown in the output of tutorial

    https://www.geekality.net/2017/08/23/setting-up-gpg-signing-for-gitgithub-on-windows/

at item "4. Verify commit was signed"

I confirm the output is right (no ^M characters) with commands

    git verify-commit HEAD
    git -p verify-commit HEAD
    git verify-commit --v HEAD
    git verify-commit --raw HEAD

and wrong (ending with ^M characters) with

    git  log --show-signature -1 HEAD
    git  -p log --show-signature -1 HEAD

I need gpg version 2.1 or greater to generate a gpg key for my windows
system, as stated by the github documentation:

    https://help.github.com/articles/generating-a-new-gpg-key/

that saves my keys in ~/AppData/Roaming/GnuPG.

2018-03-05 15:29 GMT+01:00 Johannes Schindelin <Johannes.Schindelin@gmx.de>:
> Hi Larry,
>
> On Sun, 4 Mar 2018, Larry Hunter wrote:
>
>> There is bug using "git log --show-signature" in my installation
>>
>>     git 2.16.2.windows.1
>>     gpg (GnuPG) 2.2.4
>>     libgcrypt 1.8.2
>
> The gpg.exe shipped in Git for Windows should say something like this:
>
>         $ gpg --version
>         gpg (GnuPG) 1.4.22
>         Copyright (C) 2015 Free Software Foundation, Inc.
>         License GPLv3+: GNU GPL version 3 or later
>         <http://gnu.org/licenses/gpl.html>
>         This is free software: you are free to change and redistribute it.
>         There is NO WARRANTY, to the extent permitted by law.
>
>         Home: ~/.gnupg
>         Supported algorithms:
>         Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
>         Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
>                 CAMELLIA128, CAMELLIA192, CAMELLIA256
>         Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
>         Compression: Uncompressed, ZIP, ZLIB, BZIP2
>
> Therefore, the GNU Privacy Guard version you use is not the one shipped
> and supported by the Git for Windows project.
>
>> that prints (with colors) an extra ^M (carriage return?) at the end of
>> the gpg lines. As an example, the output of "git log --show-signature
>> HEAD" looks like:
>>
>>     $ git log --show-signature HEAD
>>     commit 46c490188ebd216f20c454ee61108e51b481844e (HEAD -> master)
>>     gpg: Signature made 03/04/18 16:53:06 ora solare Europa occidentale^M
>>     gpg:                using RSA key ...^M
>>     gpg: Good signature from "..." [ultimate]^M
>>     Author: ... <...>
>>     Date:   Sun Mar 4 16:53:06 2018 +0100
>>     ...
>>
>> To help find a fix, I tested the command "git verify-commit HEAD" that
>> prints (without colors) the same lines without extra ^M characters.
>>
>>     $ git verify-commit HEAD
>>     gpg: Signature made 03/04/18 16:53:06 ora solare Europa occidentale
>>     gpg:                using RSA key ...
>>     gpg: Good signature from "..." [ultimate]
>
> My guess is that the latter command simply does not go through the pager
> while the former does.
>
> Do you see the ^M in the output of `git -p verify-commit HEAD`?
>
> Ciao,
> Johannes