[PATCH v2 0/5] provide better error messages for @{upstream}

Hi,

v2:

- Better commit descriptions (hopefully)
- error_message used in tests in one more place
- Error message changed from
  "Upstream branch '%s' not fetched from remote '%s'"
  to
  "Upstream branch '%s' not stored as a remote-tracking branch".

[I thought about using
 "No tracking brach for remote branch '%s'"
 or
 "No remote-tracking branch for upstream branch '%s'"
 or
 "Tracking branch not configured for upstream branch '%s'"
 but neither one is convincing. ]

Zbigniew Jędrzejewski-Szmek (5):
      t1507: add tests to document @{upstream} behaviour
      Provide branch name in error message when using @{u}
      Provide better message for barnhc_wiht_tpyo@{u}
      Be more specific if upstream branch is not tracked
      i18n: mark @{upstream} error messages for translation

 sha1_name.c                   |   20 ++++++++--
 t/t1507-rev-parse-upstream.sh |   81 +++++++++++++++++++++++++++++++++++++++--
 2 files changed, 94 insertions(+), 7 deletions(-)