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Fix XCASE feature test macro description
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@ -375,12 +375,12 @@ If \fBICANON\fP is also set, terminal is uppercase only.
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Input is converted to lowercase, except for characters preceded by \\.
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On output, uppercase characters are preceded by \\ and lowercase
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characters are converted to uppercase.
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.\" [requires _BSD_SOURCE or _SVID_SOURCE or _XOPEN_SOURCE]
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[requires _BSD_SOURCE or _SVID_SOURCE or _XOPEN_SOURCE]
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.\" glibc is probably now wrong to allow
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Define
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.B _XOPEN_SOURCE
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to expose
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.BR XCASE .
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.\" Define
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.\" .B _XOPEN_SOURCE
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.\" to expose
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.\" .BR XCASE .
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.TP
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.B ECHO
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Echo input characters.
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