The commit titled `Replaced codecvt with string reconstruction from character method` from April 14th of last year swapped completely correct code out for completely incorrect code, for seemingly no reason

[Akira13641]

This one, specifically.

transform_to will only work properly in contexts where the string being transformed (in either direction) does not actually contain bytes amounting to non-ASCII characters in the first place. Otherwise, it'll either throw something like std::range_error when called or simply produce output containing "garbage" characters.

This particular issue can be entirely resolved just by completely reverting the changes made by that commit.