sokoban.love/0051-run_button

run_button = function(x, y)
	styled_button('run', x,y,
		function()
			Show_menu = nil
			-- ## run: initialize
			clear_handlers()
			local buf = table.concat(map(Current_pane.editor_state.lines, function(line) return line.data end), '\n')
			edit.clear(Current_pane.output_editor_state)
			print = print_to_output
			-- ## run
			local error = eval_all()
			-- ## run: save some stuff, clean up the rest
			if error == nil then
				Show_code = nil
			else
				print = Real_print
				clear_handlers()
				-- could be either output or error
				table.insert(Current_pane.output_editor_state.lines, {data=tostring(error)})
			end
			if #Current_pane.output_editor_state.lines == 0 then
				table.insert(Current_pane.output_editor_state.lines, {data=''})
			end
			Text.redraw_all(Current_pane.output_editor_state)
		end)
	local w = App.width('run')+10
	return x+w+10, y
end