Macro runtime_fmt::rt_format_args

macro_rules! rt_format_args {
    (@[$spec:expr] [$($args:tt)*] $name:tt = $e:expr, $($rest:tt)*) => { ... };
    (@[$spec:expr] [$($args:tt)*] $name:tt = $e:expr) => { ... };
    (@[$spec:expr] [$($args:tt)*] $e:expr, $($rest:tt)*) => { ... };
    (@[$spec:expr] [$($args:tt)*] $e:expr) => { ... };
    (@[$spec:expr] [$($args:tt)*]) => { ... };
    ($spec:expr, $($rest:tt)*) => { ... };
    ($spec:expr) => { ... };
}

The core macro for runtime formatting.

This macro produces a value of type Result<FormatBuf, Error>. Invalid format strings are indicated by an error result. The resulting value can be converted to a std::fmt::Arguments via the with() method.

The syntax accepted is the same as format_args!. See the module-level docs for more detail.