Module Ppx_string_runtime.For_string

Empty string.

Literal string.

Finish a conversion to t.

Pad to some minimum length.

Combine multiple values in order.

Called in place of concat when there is just one component, an interpolated part, in the interpolation. This function has two purposes:

1. Ensure an argument has type t in expanded code without calling concat and without needing the type t to be exported explicitly for a type annotation. See note above about destructive substitution. 2. Globalize t when using the version of the interface designed for extensions that consume locals but produce global concatenation results.