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diff --git a/tests/herestr1.sub b/tests/herestr1.sub
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+# problems with word splitting unquoted here-strings present since bash-3.2
+
+x="foo bar"
+cat <<< $x # Word-splitting appears to collapse the run of whitespace
+cat <<< "$x" # Whitespace preserved, as with here doc
+
+x="qux:::::bax"
+IFS=':'
+cat <<< $x # Word-splitting appears to collapse the run of whitespace
+cat <<< "$x" # Whitespace preserved, as with here doc