# ( "PostfixOperators", ...
# then it translates them into
# ["PostfixOperators"] ++
+# Tabs are a pain to handle portably with sed, so rather than worrying
+# about them we just use tr to remove them all before we start.
echo 'extensions :: [String]' >> $@
echo 'extensions =' >> $@
- sed '/^xFlags/,/]/s/^[[:space:]]*([[:space:]]*\("[^"]*"\)[^"]*/ [\1] ++/p;d' compiler/main/DynFlags.hs >> $@
+ '$(TR)' -d '\t' < compiler/main/DynFlags.hs | '$(SED)' '/^xFlags/,/]/s/^ *( *\("[^"]*"\)[^"]*/ [\1] ++/p;d' >> $@
echo ' []' >> $@
# We don't build dummy-ghc with Cabal, so we need to pass -package