declare-option -docstring %{
    Command for copying to system clipboard.
} str clipboard_copy_cmd 'wl-copy'

define-command -docstring %{
    clip-copy [-split]: copy selections to system clipboard
        Set the clipboard_copy_cmd option to change the command
    Switches:
        -split  ensure each selection separated by newline
} -params 0..1 clipboard-copy %{
    # preserve registers
    evaluate-commands -save-regs 'a|' %{
        # copy selections
        execute-keys '"ay'
        # disposable buffer
        edit -scratch
        # set shell register to copy command
        set-register | %opt{clipboard_copy_cmd}
        # branch based on switch
        execute-keys %sh{
            if [ ${#} = 1 ] && [ ${1} = '-split' ]; then
                # paste all
                # reduce selections to those without newline
                # append a newline
                # delete trailing newline
                # select all, pipe to copy cmd
                echo '"a<a-P><a-K>\n<ret>a<ret><esc>gjd%<a-|><ret>'
            else
                # paste all, select all, pipe to copy cmd
                echo '"a<a-P>%<a-|><ret>'
            fi
        }
        # clean up
        delete-buffer
    }
}

map -docstring "yank the selections into the clipboard" global user y ": clipboard-copy<ret>"
map -docstring "yank the split selections into the clipboard" global user Y ": clipboard-copy -split<ret>"

map -docstring "paste the clipboard" global user p "<a-!> wl-paste -n<ret>"
map -docstring "paste the clipboard before" global user P "! wl-paste -n<ret>"
map -docstring "replace with the clipboard" global user R '"_d! wl-paste  -n<ret>'