src/scripts/xzgrep.1: Filenames to xzgrep are optional.
xzgrep --help was correct already.
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@ -14,7 +14,7 @@ xzgrep \- search compressed files for a regular expression
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.RI [ grep_options ]
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.RI [ grep_options ]
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.RB [ \-e ]
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.RB [ \-e ]
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.I pattern
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.I pattern
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.IR file " ..."
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.RI [ file... ]
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.br
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.br
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.B xzegrep
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.B xzegrep
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\&...
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\&...
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