fmtlib: an API to return parts of the formatted number in result string?

Is there a fmtlib API to have something similar to std::to_chars, but also returning a set of string_view for every part of the resulting string - specifically, sign; integer part; decimal part; exponent sign; exponent itself? That could help create own post-processing of e.g. floating-point or integer output, inserting separators (where standard things provided by locale are insufficient) without complexity of parsing the string, and benefit from fast and correct implementation of the library functions. Thanks!