That excuse isn't credible. I mean, I asked about a libraries that handled that usecase, not a standard library. If there was demand for that use case, and that demand popped up so often that it justified the adoption of a de-facto standard, why isn't there any third-party library specialized in that usecase? I mean, putting together a library takes far less work than presenting a proposal to the C standardization committee, which is open to proposals.
So, why isn't there one? Might it be that there is actually no relevant demand for it?