Handle "user@" prefix for credentials partially included in URLs

revparse: Lookup branch before described tag

Fix #1306

Win32: Make sure error messages are consistently UTF-8 encoded

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Support local msysgit installations

Try harder to find global config file

Signed-off-by: Sven Strickroth <email@cs-ware.de>

W/o this a libgit2 error message could have a mixed encoding:
e.g. a filename in UTF-8 combined with a native Windows error message
encoded with the local code page.

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Fix clone fail if repo head detached

Signed-off-by: Frank Li <lznuaa@gmail.com>
Signed-off-by: nulltoken <emeric.fermas@gmail.com>

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Crash when resolving a ref starting with "/"

A leading slash confuses the name normalization code when the flags
include ALLOW_ONELEVEL. Catch this case in particular to avoid
triggering an assertion in the uppercase check which expects us not to
pass it an empty string.

The existing tests don't catch this as they simply use the NORMAL
flag.

This fixes #1300.

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Add helper API for diff line stats from patch

This adds a `git_diff_patch_line_stats()` API that gets the total
number of adds, deletes, and context lines in a patch.  This will
make it a little easier to emulate `git diff --stat` and the like.

Right now, this relies on generating the `git_diff_patch` object,
which is a pretty heavyweight way to get stat information.  At
some future point, it would probably be nice to be able to get
this information without allocating the entire `git_diff_patch`,
but that's a much larger project.

Stricter config entry name validation

Fix p_realpath on OpenBSD

Vector improvements and their fallout

This is @nulltoken's work to test various invalid config section
and key names and make sure we are validating properly.