Fix GH-16174: Empty string is an invalid expression for phpdbg-ev #16177
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Strings may be empty, so we must not assume they are not.
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I'm somewhat concerned that this patch may have unintended side-effects; after all, the fix is too easy, and I think it's somewhat unlikely that empty strings have just been overlooked. |
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Strings may be empty, so we must not assume they are not.