view .arcconfig @ 39353:0d21b1f1722c

stringutil: refactor core of pprint so it emits chunks

This commit splits the core of pprint() to a new function that is
a generator of chunks instead of a function returning a single
value. This will make it possible to stream output without waiting for
all data to be formatted first. And it will make it easier to
implement support for indenting.

Differential Revision: https://phab.mercurial-scm.org/D4397

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