Signing all patches and email to this list

[Alejandro Colomar <alx@kernel.org>]

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Hi,

I'd like to ask contributors to sign their emails to this list with a
PGP key; especially for mails that include patches, but ideally all of
them.  Of course, it's a suggestion, and there wouldn't be any
enforcement other than asking.  What do you think of that?

I've prepared some text for ./CONTRIBUTING; please review.  It also
depends on mutt(1) maintainers, if they want to patch mutt(1) to allow
crypto operations in batch and mailx modes.

Thanks,
Alex

---

commit f7ba049d975a4b323c8086b2fc859687e4fc1d4e (HEAD -> sign)
Author: Alejandro Colomar <alx@kernel.org>
Date:   Fri Nov 10 01:10:00 2023 +0100

    CONTRIBUTING: Please sign your emails with PGP
    
    Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/CONTRIBUTING b/CONTRIBUTING
index 475244c13..204e04fb3 100644
--- a/CONTRIBUTING
+++ b/CONTRIBUTING
@@ -56,6 +56,29 @@ Description
 
                  help
 
+       Sign your emails with PGP
+             Please sign all of your emails sent to the mailing list,
+             including your emails containing patches, with your PGP
+             key.  This helps establish trust between you and other
+             contributors of this project, and prevent others
+             impersonating you.
+
+             There are many ways you can sign your patches, and it
+             depends on your preferred tools.  You can use
+             git-send-email(1) in combination with mutt(1).  For that,
+             do the following.
+
+             In <~/.gitconfig>, add the following section:
+
+                 [sendemail]
+                     sendmailcmd = mutt -H - && true
+
+             And then, patched mutt(1) to enable encryption in batch and
+             mailx modes, which is disabled in upstream mutt(1).
+             Hopefully, mutt(1) will merge the patch, so it'd be easier
+             to do this.  You can find the patch here:
+             <https://gitlab.com/muttmua/mutt/-/merge_requests/173>.
+
    Patches
        If you know how to fix a problem in a manual page (if not, see
        "Reporting bugs" below), then send a patch in an email.

-- 
<https://www.alejandro-colomar.es/>

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