pub struct NoExpand<'t>(pub &'t str);
NoExpand indicates literal string replacement.
It can be used with
replace_all to do a literal string
replacement without expanding
$name to their corresponding capture
groups. This can be both convenient (to avoid escaping
$, for example)
and performant (since capture groups don’t need to be found).
't is the lifetime of the literal text.
0: &'t str
Returns the argument unchanged.