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-rwxr-xr-xshell/ash_test/ash-misc/builtin1.tests6
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diff --git a/shell/ash_test/ash-misc/builtin1.tests b/shell/ash_test/ash-misc/builtin1.tests
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+# builtins, unlike keywords like "while", can be constructed
+# with substitutions
+VARIABLE=export
+$VARIABLE VARIABLE
+env | grep ^VARIABLE
+echo OK:$?