commandline: fix arg selection when browsing the history
commandline: fix arg selection when browsing the history

svn path=/trunk/kdelibs/kate/; revision=391704

cmacq2/kate,hlamer/kate,hlamer/kate,sandsmark/kate,hlamer/kate,sandsmark/kate,hlamer/kate,sandsmark/kate,hlamer/kate,hlamer/kate,cmacq2/kate,jfmcarreira/kate,DickJ/kate,jfmcarreira/kate,jfmcarreira/kate,sandsmark/kate,hlamer/kate,hlamer/kate,DickJ/kate,hlamer/kate,hlamer/kate,DickJ/kate,cmacq2/kate,DickJ/kate