bug#26213: [PATCH] maint: Mention the Signed-off-by line in 'HACKING'.

[Clément Lassieur]

* HACKING: Mention the Signed-off-by line.
---
 HACKING | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/HACKING b/HACKING
index 46a724961..26f828bd6 100644
--- a/HACKING
+++ b/HACKING
@@ -50,6 +50,10 @@ You can prevent yourself from accidentally pushing unsigned 
commits to Savannah
 by using the pre-push Git hook called 'pre-push'. It's located at
 'etc/git/pre-push'.
 
+When pushing a commit on behalf of somebody else, you should add a
+Signed-off-by line at the end of the commit log message (e.g. with ‘git am
+--signoff’).  This improves tracking of who did what.
+
 For anything else, please post to address@hidden and leave time for a
 review, without committing anything.  If you didn’t receive any reply
 after two weeks, and if you’re confident, it’s OK to commit.
-- 
2.12.0