Are revlog diff calculated as "text" ALWAYS?

[Kastner Masilko, Friedrich]

> From: mercurial-bounces at selenic.com [mailto:mercurial-bounces at selenic.com] On Behalf Of Jesus Cea
>
> Try the "echo -n 'X' >>z" version to avoid inserting linefeeds.
> Sorry, my mistake.

Indeed. Doing that, I too get snapshots (instead of deltas) all the way through. Even if I only change one byte within the file, a snapshot is taken.
 
> My point is that since Mercurial already recognize files as binary, and
> refuse to show a diff if you doesn't specify "hg diff --text", we could
> use a binary diff backend anyway in those cases.

AFAIK, internally Mercurial does not make a difference if the file is binary or not (what defines "binary", anyway?). However, the front-end commands that display diffs are running a heuristic to decide whether it might be binary-only content and therefore probably not worth printing.

I always was under the impression that Mercurial uses the bdiff.c implementation, which works for binaries just as well. Seems like that changed. I can't see how that behavior is intended, though.

regards,
Fritz



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