Extend current klipper entry with a space on every line tp paste files in wiki:

dcop klipper klipper setClipboardContents "$(dcop klipper klipper getClipboardContents | sed -e 's/^/ /')"

Abuse klipper for pasting config files in the media wiki:

export FILE_NAME=/etc/make.conf; 
dcop klipper klipper setClipboardContents "$(cat $FILE_NAME)"; 
dcop klipper klipper setClipboardContents "===$FILE_NAME=== $(echo; dcop klipper klipper getClipboardContents | sed -e 's/^/ /')";