Not a bug, user error. See the manpage. It says -i[suffix]. By putting -ir you are telling it to put an r at the end of the file name. The correct syntax to use is -i -r
Not a bug, user error. See the manpage. It says -i[suffix]. By putting -ir you are telling it to put an r at the end of the file name. The correct syntax to use is -i -r