Supply a missing \ ... this missing has meant that these tests
have not been testing everything they should have been testing.
Never mind, they still all succeed.

Allow for testing other than /bin/sh using TEST_SH (from kre@)

PR/48843: Jarmo Jaakkola: Test cses for break/continue/return broken
inside dot commands:

The test cases are named with the pattern
dotscope_cmd_cmdscope,
where dotscope is the scope in which

PR/48843: Jarmo Jaakkola: Test cses for break/continue/return broken
inside dot commands:

The test cases are named with the pattern
dotscope_cmd_cmdscope,
where dotscope is the scope in which the dot command is and cmdscope
is the scope where cmd is in the sourced file.

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