This will be used later for proving SmPL patches against
legacy patch series.

Signed-off-by: Luis R. Rodriguez <[email protected]>
---
 lib/bpgit.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/bpgit.py b/lib/bpgit.py
index f56e377..f4b53c4 100644
--- a/lib/bpgit.py
+++ b/lib/bpgit.py
@@ -328,3 +328,15 @@ def reset(opts=[], tree=None):
                                close_fds=True, universal_newlines=True, 
cwd=tree)
     process.wait()
     _check(process)
+
+def diff(tree=None, extra_args=None):
+    cmd = ['git', 'diff', '--color=always'] + extra_args
+
+    process = subprocess.Popen(cmd,
+                               stdout=subprocess.PIPE, 
stderr=subprocess.STDOUT,
+                               close_fds=True, universal_newlines=True, 
cwd=tree)
+    stdout = process.communicate()[0]
+    process.wait()
+    _check(process)
+
+    return stdout
-- 
1.8.5.3

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