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Document that you can't pass empty strings to console options #7363

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Mar 1, 2017
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Document that you can't pass empty strings to console options #7363

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4 changes: 4 additions & 0 deletions console/input.rst
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Expand Up @@ -203,3 +203,7 @@ You can combine ``VALUE_IS_ARRAY`` with ``VALUE_REQUIRED`` or
when the option was used without a value (``command --language``) or when
it wasn't used at all (``command``). In both cases, the value retrieved for
the option will be ``null``.

Similarly, due to a PHP limitation, there is no way to pass an empty string
as the value of an option. In ``command --prefix`` and ``command --prefix=''``
cases, the value of the ``prefix`` option will be ``null``.