Enum FmtArg 

pub enum FmtArg<'a> {
    Str(&'a [u8]),
    Char(u8),
    Int(i32),
    LuaInt(i64),
    Float(f64),
    Utf8Codepoint(u32),
}

Typed format argument for push_vfstring.

PORT NOTE: replaces the C va_list variadic interface. C callers of luaO_pushfstring(L, fmt, ...) must be updated to pass structured FmtArg slices. The format-string scanning logic is preserved in push_vfstring; only the argument-list type changes.

Variants

Str(&'a [u8])

%s — a byte string (replaces const char * from va_list).

Char(u8)

%c — a single byte character.

Int(i32)

%d — a 32-bit integer.

LuaInt(i64)

%I — a Lua integer (i64).

Float(f64)

%f — a Lua float (f64).

Utf8Codepoint(u32)

%U — a Unicode codepoint (u32), encoded as UTF-8.