X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=youtube-dl;a=blobdiff_plain;f=youtube_dl%2Futils.py;h=b460393bf37106a47304dfa97dd7b1efa37117cd;hp=574284e944508340ea603e8e047008edee8a35ae;hb=6cc622327ff8289f94894f3695ed31014c61cf8e;hpb=0fe7783eced5c62dbd95780c2150fd1080bd3927

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 574284e94..b460393bf 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -2225,6 +2225,20 @@ def try_get(src, getter, expected_type=None):
                 return v
 
 
+def merge_dicts(*dicts):
+    merged = {}
+    for a_dict in dicts:
+        for k, v in a_dict.items():
+            if v is None:
+                continue
+            if (k not in merged or
+                    (isinstance(v, compat_str) and v and
+                        isinstance(merged[k], compat_str) and
+                        not merged[k])):
+                merged[k] = v
+    return merged
+
+
 def encode_compat_str(string, encoding=preferredencoding(), errors='strict'):
     return string if isinstance(string, compat_str) else compat_str(string, encoding, errors)