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From: Jeremie Dimino <>
To: caml users <>
Subject: [Caml-list] [ANN] First release of Pp, a pretty-printing library
Date: Tue, 24 Mar 2020 17:32:44 +0000
Message-ID: <> (raw)

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I'm happy to announce the first release of the pp library!

This library provides a lean alternative to the Format module [1] of the
standard library. It uses the same comcepts of boxes and break hints,
however it defines its own algebra which some might find easier to work
with and reason about.  I personally do :). The final rendering is still
done via a formatter which makes it easy to integrate `Pp` in existing
programs using `Format`.

We introduced this module in [Dune][2] to help improve the formatting of
messages printed in the terminal and it has been a success. The new API is
smaller, simpler and makes it easy for developers to do the right thing.
Once the `Pp` module of Dune was mature enough, we decided to extract it
into a separate library so that it could benefit others.

The library itself is composed of a single `Pp` module and has no
dependencies.  Its documentation is self-contained and no previous
knowledge is required to start using it, however the various guides for the
`Format` module such as this one [3] should be applicable to `Pp` as well.

If you have used `Format` before and like me found its API complicated and
difficult to use, I hope that you will find `Pp` nicer to work with!




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