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$ man dash | grep '[<>]&n'
[n1]<&n2 Copy file descriptor n2 as stdout (or fd n1). fd n2.
[n1]>&n2 Copy file descriptor n2 as stdin (or fd n1). fd n2.
The text looks mangled with orphaned "fd n2" not making any sense.
The text has stdout and stdin confused/swapped.
dash.1 says "stdout" for <& - compare:
NetBSD sh.1 says
[n1]<& n2 Redirect standard input (or n1) from a duplicate of file
descriptor n2.
OpenGroup text says:
2.7.5 Duplicating an Input File Descriptor
The redirection operator:
[n]<&word
shall duplicate one input file descriptor from another, or shall close
one.
** Affects: dash (Ubuntu)
Importance: Undecided
Status: New
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Error in dash(1) manual in <& and >& descriptions
https://bugs.launchpad.net/bugs/2051420
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seeded packages, which is subscribed to dash in Ubuntu.
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