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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3)
Gecko/20041020 Galeon/1.3.19

Description of problem:
This is supposed to work, both according to the manual and the
command-line help.

[root@emyn ~]# echo -e "file1\nfile2\nfile3" | xargs -I '**' echo '**'
blah
xargs: invalid option -- I
Usage: xargs [-0prtx] [-E eof-str] [-e[eof-str]] [-I replace-str]
       [-i[replace-str]] [-L max-lines] [-l[max-lines]] [-n max-args]
       [-s max-chars] [-P max-procs] [--null] [--eof[=eof-str]]
       [--replace[=replace-str]] [--max-lines[=max-lines]] [--interactive]
       [--max-chars=max-chars] [--verbose] [--exit]
[--max-procs=max-procs]
       [--max-args=max-args] [--no-run-if-empty] [--version] [--help]
       [command [initial-arguments]]

Report bugs to <bug-findutils>.



Version-Release number of selected component (if applicable):
findutils-4.1.20-7

How reproducible:
Always

Steps to Reproduce:
1. See report
2.
3.
    

Expected Results:  I expect the same result as:

[root@emyn ~]# echo -e "file1\nfile2\nfile3" | xargs -i'**' echo '**' blah
file1 blah
file2 blah
file3 blah


Additional info: