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"git clone" from an empty repository gave unnecessary error message, even though it did everything else correctly.
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"git cvsserver" invoked git commands via "git-foo" style, which has long been deprecated.
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"git fetch" and "git clone" had an extra sanity check to verify the presence of the corresponding *.pack file before downloading *.idx file by issuing a HEAD request. Github server however sometimes gave 500 (Internal server error) response to HEAD even if a GET request for *.pack file to the same URL would have succeeded, and broke clone over HTTP from some of their repositories. As a workaround, this verification has been removed (as it is not absolutely necessary).
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"git grep" did not like relative pathname to refer outside the current directory when run from a subdirectory.
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an error message from "git push" was formatted in a very ugly way.
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"git svn" did not quote the subversion user name correctly when running its author-prog helper program.
Other minor documentation updates are included.