How pass multiple args to debug_args?

[MaoPann]

If submitting a bug please make sure

• [ ] If you are using gdb
  • [ ] gdb --version >= 7.7.1
  • [ ] it works on the command line with gdb
  • [ ] cwd and target are properly set
• [ ] If you are using lldb
  • [ ] lldb --version >= 3.7.1
  • [ ] it works on the command line with lldb-mi
  • [ ] cwd and target are properly set

Screenshots are helpful but not required