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docs/deprecated: deprecate passing plugin args through arg=

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Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Message-Id: <20210802134414.52037-1-ma.mandourr@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[AJB: fixed up move of deprecated.rst]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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Mahmoud Mandour 2021-08-02 15:44:14 +02:00 committed by Alex Bennée
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docs/about/deprecated.rst
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@ -139,6 +139,18 @@ The ``-no-quit`` is a synonym for ``-display ...,window-close=off`` which
should be used instead.
Plugin argument passing through ``arg=<string>`` (since 6.1)
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Passing TCG plugins arguments through ``arg=`` is redundant is makes the
command-line less readable, especially when the argument itself consist of a
name and a value, e.g. ``-plugin plugin_name,arg="arg_name=arg_value"``.
Therefore, the usage of ``arg`` is redundant. Single-word arguments are treated
as short-form boolean values, and passed to plugins as ``arg_name=on``.
However, short-form booleans are deprecated and full explicit ``arg_name=on``
form is preferred.
QEMU Machine Protocol (QMP) commands
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