return {
  require("luasnip").snippet(
    { trig = "mainopt" },
    {
      t({
        "#include <libowfat/errmsg.h>",
        "",
        "#define dieusage() die(100,argv0,TODO)",
        "#define dienoarg(OPT)                     \\",
        "  do {                                    \\",
        "    carp(\"missing argument for -\"OPT);    \\",
        "    dieusage();                           \\",
        "  } while(0)",
        "",
        "int main(int argc, char **argv)",
        "{",
        "  int i;",
        "  errmsg_iam(*argv);",
        "  for (i=1;i<argc;i++) {",
        "    if (argv[i][0]!='-') break;",
        "    if (argv[i][1]=='-' && !argv[i][2]) break;",
        "    switch (argv[i][1]) {",
        "    ",
      }),
      require("luasnip").insert_node(1, ""),
      t({
        "",
        "    default: dieusage();",
        "    }",
        "  }",
        "  argc-=i; argv+=i;",
      }),
    }
  ),
}