--- jigdo-0.7.3.orig/scripts/jigdo-lite	2017-12-07 16:35:00.806877547 +0000
+++ jigdo-0.7.3/scripts/jigdo-lite	2017-12-07 16:35:03.514902976 +0000
@@ -14,6 +14,8 @@
 maxMissing=30 # Don't try fallback servers if x% or more of files missing
 rcFile="$HOME/.jigdo-lite"
 
+unset GREP_OPTIONS
+
 if test "x$OSTYPE" = "xmsys"; then
   windows=true
   OSTYPE=Windows