From: Frantisek Hrbata <frantisek@hrbata.com>
Date: Sun, 27 Dec 2020 12:21:18 +0000 (+0100)
Subject: mrlib: don't call git-log in comments2mrs if there are no mboxes
X-Git-Tag: v0.3~3
X-Git-Url: http://www.hrbata.com/gitweb/?a=commitdiff_plain;h=0d425d50bc22c754f5293d5d6e0a02342347f1c9;p=gimrr.git

mrlib: don't call git-log in comments2mrs if there are no mboxes

If there are not mboxes git log --stdin gets stuck waiting on input.
In such case return empty dict.

Signed-off-by: Frantisek Hrbata <frantisek@hrbata.com>
---

diff --git a/mrlib.py b/mrlib.py
index cf2a2fb..a1ed198 100755
--- a/mrlib.py
+++ b/mrlib.py
@@ -177,13 +177,16 @@ def verify_commits(mrcommits, commits):
     return list(revs)
 
 def comments2mrs(refs, mrs=None):
+    m = dict()
+
     mb_refs = filter_refs(refs, mrs=mrs, types=["mbox"])
+    if not mb_refs:
+        return m
 
     stdin = "\n".join(ref for rev, ref in mb_refs)
     rv, out, err = run(["git", "log", "--format=%S %H", "--stdin"],
             stdin=stdin)
 
-    m = dict()
     for line in out.strip().split("\n"):
         ref, rev = line.split()
         mr = ref.split('/')[2]