#539 sed: unknown command: `F'

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2012-07-26
2011-06-27
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According to the documentation http://www.gnu.org/software/sed/manual/html_node/Extended-Commands.html#Extended-Commands GNU sed should support the F command: Print out the file name of the current input file (with a trailing newline). But when I try to use it with version 4.2.1 I get the error message: unknown command: `F'.

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