Copy to primary buffer and clipboard

The file names are separated with newlines in the primary and with spaces in
the clipboard.

exec/key-handler

@@ -23,7 +23,7 @@ rotate() {
 }
 
 case "$1" in
-"y")        tr '\n' ' ' | xclip -i ;;
+"C-x")      xclip -in -filter | tr '\n' ' ' | xclip -in -selection clipboard ;;
 "C-c")      while read file; do xclip -selection clipboard -target image/png "$file"; done ;;
 "C-e")      while read file; do urxvt -bg "#444" -fg "#eee" -sl 0 -title "$file" -e sh -c "exiv2 pr -q -pa '$file' | less" & done ;;
 "C-g")      tr '\n' '\0' | xargs -0 gimp & ;;