Re: [PATCH v2 19/22] xdiff-interface: allow early return from xdiff_emit_{line,hunk}_fn

Ævar Arnfjörð Bjarmason  [off-list ref] writes:

Change the function prototype of xdiff_emit_{line,hunk}_fn to return
an int instead of void. This will allow for returning early from hunk
& diff consumers that want some of the data, but not all of it.

No behavior is being changed here, just replacing the equivalent of
"return" with "return 0", nothing acts on the changed return values
yet.

So, is this "allowing" early return yet?  I am looking at the patch
title and then reading the above paragraph and wondering.

Or is this step "preparation for allowing" and the real fun is left
for later steps?