IStdlib.IFmtLow-level combinators built on Fmt. Sophisticated pretty-printing functions should rather go in Pp.
val colon_sp : 'a tcolon_sp is Fmt.any ":@ ". It prints a colon and a space break hint.
Should be directly in Fmt >=0.9.1.
if' bool pp is pp if bool is true and Fmt.nop otherwise.
module Labelled : sig ... endAdapters of Fmt functions using labelled interfaces