sh: Add a testcase for cmdsubst errors that already works properly. If a command substitution consists of one special builtin and there is a redirection error, this should not abort the outer shell. It was fixed in r201366 by ignoring special builtin properties for command substitutions consisting of one builtin.
sh: Add a testcase for cmdsubst errors that already works properly.
If a command substitution consists of one special builtin and there is a
redirection error, this should not abort the outer shell.
It was fixed in r201366 by ignoring special builtin properties for command
substitutions consisting of one builtin.

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