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# BASH BUG: spurious DEL characters appear on empty variable interpolation.
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# BASH 4.2.8(1)-release
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recho correct "$a" # correct empty output line
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recho correct "$a""$a" # correct empty output line
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recho correct "$a""$a""$a" # correct empty output line
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recho XwrongX "$a""$a""$a""$a" # spurious two DEL chars appear at line end
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recho correct a"$a" # correct single "a" on line
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recho XwrongX a"$a""$a" # spurious DEL char appears at line end
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recho correct a"$a$a" # correct single "a" on line
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recho correct a"$a$a$a$a" # correct single "a" on line