Add .git-blame-ignore-revs with reformat commits

This allows git blame to ignore reformatting changes and instead
to show the previous commit that changed the line.

To avoid manually building the list of commits this commit
adds a file with a list of reformatting commits. I might have
missed a few but this should be a good start. To use the file
use:

   git blame --ignore-revs-file=.git-blame-ignore-revs file

or to automatically always use the file

   git config blame.ignoreRevsFile .git-blame-ignore-revs

Naming the file .git-blame-ignore-revs is a convention.

Some more details in this random blog post:

https://www.moxio.com/blog/43/ignoring-bulk-change-commits-with-git-blame

Patch V2: Remove merge commit of the great formatting, add small
          reminder how to use the feature at the top of the file

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: David Sommerseth <davids@openvpn.net>
Message-Id: <20200604235338.11728-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg19967.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>

diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644 (file)
index 0000000..6d9b374
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,39 @@
+# This FILE allows git blame to ignore reformatting changes and instead
+# shows the previous commit that changed the line.
+#
+# To avoid manually building the list of commits this commit
+# adds a file with a list of reformatting commits. TO use:
+#
+#   git blame --ignore-revs-file=.git-blame-ignore-revs file
+#
+# or to automatically always use the file
+#
+#   git config blame.ignoreRevsFile .git-blame-ignore-revs
+
+
+# Uncrustify the tests/unit_tests/ part of our tree.
+da1574ef7826d73f01e120cbd1ba40ce39a305b7
+
+# Another round of uncrustify code cleanup.
+9cf7b4925a54d93fbea1cadcf3dc0e11f3ce358f
+
+# networking_sitnl.c: uncrustify file
+2c45d268ca65c522fbabb7c4dab5e721296b4623
+
+# Uncrustify tapctl and openvpnmsica
+6280d3d5536174934ee22d3840457d61896e0e3a
+
+# tun.c: uncrustify
+baef44fc8769bbd99f4d699ce9f63180c29a5455
+
+# networking_sitnl.c: uncrustify file
+2c45d268ca65c522fbabb7c4dab5e721296b4623
+
+# uncrustify openvpn sources
+f57431cdc88f22fa4d7962946f0d3187fe058539
+
+# More broadly enforce Allman style and braces-around-conditionals
+4cd4899e8e80efae03c584a760fd107251735723
+
+# The Great Reformatting - first phase
+81d882d5302b8b647202a6893b57dfdc61fd6df2