You can also test with setting the "target.run-args": (lldb) settings set target.run-args "one 1" 'two 2' three (lldb) settings show target.run-args target.run-args (arguments) = [0]: "one 1" [1]: "two 2" [2]: "three" http://reviews.llvm.org/D8265 EMAIL PREFERENCES http://reviews.llvm.org/settings/panel/emailpreferences/