[Bug 8371] New: awk: missing support for length function w/out paren

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8371

           Summary: awk: missing support for length function w/out paren
           Product: Busybox
           Version: unspecified
          Platform: PC
               URL: http://http://pubs.opengroup.org/onlinepubs/9699919799
                    /utilities/awk.html
        OS/Version: Other
            Status: NEW
          Severity: minor
          Priority: P5
         Component: Standard Compliance
        AssignedTo: unassigned at busybox.net
        ReportedBy: vapier at gentoo.org
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0


POSIX allows for calling the length function w/out any parentheses:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/awk.html

length[([s])]
Return the length, in characters, of its argument taken as a string, or of the
whole record, $0, if there is no argument.

simple testcase:
$ echo asdf | gawk '{print length}'
4
$ echo asdf | busybox awk '{print length}'
awk: cmd. line:1: Unexpected token

it does support the implicit $0, but only when () are used:
$ echo asdf | busybox awk '{print length()}'
4

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