Using generic function pointers

int edit_translate_concise(struct ged *gedp, const union edit_cmd * const cmd);
int edit_translate_add_arg(union edit_cmd * const cmd, struct edit_arg * const arg);

struct edit_cmd_tab {
    char *name;
    char *opt_global;
    char *usage;
    char *help;
    int (*exec_concise)(struct ged *gedp, const union edit_cmd *const cmd);
    int (*add_arg)(union edit_cmd *const cmd, struct edit_arg *const arg);
};

static const struct edit_cmd_tab edit_cmds[] = {
    ...
    {"translate",       (char *)NULL,
        "[FROM] TO OBJECT ...",
        "[[-n] -k {FROM_OBJECT | FROM_POS}]n"
            "[-n] [-a | -r] {TO_OBJECT | TO_POS} OBJECT ...",
        &edit_translate_concise,
        &edit_translate_add_arg
    },
    ...
};

/home/bhinesley/brlcad-trunk/src/libged/edit.c:866:55: warning: ‘union edit_cmd’ declared inside parameter list [enabled by default]
/home/bhinesley/brlcad-trunk/src/libged/edit.c:866:55: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
/home/bhinesley/brlcad-trunk/src/libged/edit.c:867:54: warning: ‘union edit_cmd’ declared inside parameter list [enabled by default]

/home/bhinesley/brlcad-trunk/src/libged/edit.c:1188:2: warning: initialization from incompatible pointer type [enabled by default]
/home/bhinesley/brlcad-trunk/src/libged/edit.c:1188:2: warning: (near initialization for ‘edit_cmds[1].exec_concise’) [enabled by default]
/home/bhinesley/brlcad-trunk/src/libged/edit.c:1190:5: warning: initialization from incompatible pointer type [enabled by default]
/home/bhinesley/brlcad-trunk/src/libged/edit.c:1190:5: warning: (near initialization for ‘edit_cmds[1].add_arg’) [enabled by default]

void foo(union bar *p);

union bar {
  int a;
};

union bar u;
foo(&u);

union bar {
  int a;
};

void foo(union bar *p);

union bar;
void foo(union bar *p);

union bar {
  int a;
};

(*edit_cmds[i].add_arg)( /* arguments go here */ );

edit_cmds[i].add_arg( /* arguments go here */ );

struct ged;
union edit_cmd;
struct edit_arg;
int edit_translate_concise(struct ged *gedp, const union edit_cmd * const cmd);
int edit_translate_add_arg(union edit_cmd * const cmd, struct edit_arg * const arg);