Detect if xrandr fails completely

Xrandr 1.0.2 didn't output --verbose like output at all. This change
detects that and outputs an error, instead of producing an empty
configuration.

diff --git a/autorandr.py b/autorandr.py
index 19f1a5e2e2242f43097f12346364413fc5441e8d..aadb7d4f608e3e179fefe87d7b8f563cc8042d58 100755 (executable)
--- a/autorandr.py
+++ b/autorandr.py
@@ -328,6 +328,8 @@ def parse_xrandr_output():
 
     # Split at output boundaries and instanciate an XrandrOutput per output
     split_xrandr_output = re.split("(?m)^([^ ]+ (?:(?:dis)?connected|unknown connection).*)$", xrandr_output)
+    if len(split_xrandr_output) < 2:
+        raise RuntimeError("No output boundaries found")
     outputs = OrderedDict()
     modes = OrderedDict()
     for i in range(1, len(split_xrandr_output), 2):