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lfs: check content length after downloading content...
lfs: check content length after downloading content Adapted from the Facebook repo[1]. The intent is to distinguish between the connection dying and getting served a corrupt blob. The original message: HTTP makes no provision to tell your client that you failed halfway through producing your response and won't have the answer they're looking for. So, if a LFS server fails while producing a response, then we'll report an OID mismatch. We can do a little better and disambiguate between "the server sent us the wrong blob" (very scary) and "the server crashed" (merely annoying) by looking at the content length of the response we got back. If it's not what was advertised, we can reasonably safely assume the server crashed. [1] https://github.com/facebookexperimental/eden/commit/2a4a6fab4e882ed89b948bfc1e7d56d7c3c99dd2 Differential Revision: https://phab.mercurial-scm.org/D7881
Matt Harbison - - Load All Authors

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diffs.txt
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Mercurial's default format for showing changes between two versions of
a file is compatible with the unified format of GNU diff, which can be
used by GNU patch and many other standard tools.
While this standard format is often enough, it does not encode the
following information:
- executable status and other permission bits
- copy or rename information
- changes in binary files
- creation or deletion of empty files
Mercurial also supports the extended diff format from the git VCS
which addresses these limitations. The git diff format is not produced
by default because a few widespread tools still do not understand this
format.
This means that when generating diffs from a Mercurial repository
(e.g. with :hg:`export`), you should be careful about things like file
copies and renames or other things mentioned above, because when
applying a standard diff to a different repository, this extra
information is lost. Mercurial's internal operations (like push and
pull) are not affected by this, because they use an internal binary
format for communicating changes.
To make Mercurial produce the git extended diff format, use the --git
option available for many commands, or set 'git = True' in the [diff]
section of your configuration file. You do not need to set this option
when importing diffs in this format or using them in the mq extension.