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-rw-r--r--docs/manual/patch-policy.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/manual/patch-policy.txt b/docs/manual/patch-policy.txt
index 6e27e717ab..0b4604e5c3 100644
--- a/docs/manual/patch-policy.txt
+++ b/docs/manual/patch-policy.txt
@@ -106,6 +106,10 @@ upstream SCM software to generate the patch set.
Otherwise, concatenate the header with the output of the
+diff -purN package-version.orig/ package-version/+ command.
+If you update an existing patch (e.g. when bumping the package version),
+make sure the existing From header and Signed-off-by tags are not
+removed, but do update the rest of the patch comment when appropriate.
+
At the end, the patch should look like:
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