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either behaviour is undefined or it is an error as decided by table~\ref{tab:use
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\item[use] Returns shell true (0) if the first argument (a \t{USE} flag name) is enabled, false |
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\item[use] Returns shell true (0) if the first argument (a \t{USE} flag name) is enabled, false |
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otherwise. If the flag name is prefixed with \t{!}, returns true if the flag is disabled, and |
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otherwise. If the flag name is prefixed with \t{!}, returns true if the flag is disabled, and |
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false if it is enabled. It is guaranteed that this command is quiet. |
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false if it is enabled. It is guaranteed that this command is quiet. |
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\item[usev] The same as \t{use}, but also prints the flag name if it is enabled. |
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\item[usev] The same as \t{use}, but also prints its argument if the return value is true. |
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\item[useq] Deprecated synonym for \t{use}. |
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\item[useq] Deprecated synonym for \t{use}. |
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\item[use\_with] Has one-, two-, and three-argument forms. The first argument is a USE flag name, |
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\item[use\_with] Has one-, two-, and three-argument forms. The first argument is a USE flag name, |
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the second a \t{configure} option name (\t{\$\{opt\}}), defaulting to the same as the first argument |
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the second a \t{configure} option name (\t{\$\{opt\}}), defaulting to the same as the first argument |
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