If a file has been deleted/renamed, annotate refuses to work
because the file does not exist on the working tree anymore
(even if the path provided does match a blob on said revision).

Signed-off-by: Edmundo Carmona Antoranz <eantoranz@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>

Extend transfer.hideRefs to work better with use of namespaces.

* lf/ref-is-hidden-namespace:
  t5509: add basic tests for hideRefs
  hideRefs: add support for matching full refs
  upload-pack: strip refs before calling ref_is_hidden()
  config.txt: document the semantics of hideRefs with namespaces

Having a leftover .idx file without corresponding .pack file in
the repository hurts performance; "git gc" learned to prune them.

* dk/gc-idx-wo-pack:
  gc: remove garbage .idx files from pack dir
  t5304: test cleaning pack garbage
  prepare_packed_git(): refactor garbage reporting in pack directory

Test whether regular and full hideRefs patterns work as expected when
namespaces are used.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Lukas Fleischer <lfleischer@lfos.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Add a custom report_garbage handler to collect and remove
garbage .idx files from the pack directory.

Signed-off-by: Doug Kelly <dougk.ff7@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Pack garbage, noticeably stale .idx files, can be cleaned up during
a garbage collection.  This tests to ensure such garbage is properly
cleaned up.

Note that the prior test for checking pack garbage with count-objects
left some stale garbage after the test exited.  This has also been
corrected.

Signed-off-by: Doug Kelly <dougk.ff7@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

"git blame" learnt to take "--first-parent" and "--reverse" at the
same time when it makes sense.

* mk/blame-first-parent:
  blame: allow blame --reverse --first-parent when it makes sense
  blame: extract find_single_final
  blame: test to describe use of blame --reverse --first-parent

"git status --branch --short" accessed beyond the constant string
"HEAD", which has been corrected.

* rs/wt-status-detached-branch-fix:
  wt-status: use skip_prefix() to get rid of magic string length constants
  wt-status: don't skip a magical number of characters blindly
  wt-status: avoid building bogus branch name with detached HEAD
  wt-status: exit early using goto in wt_shortstatus_print_tracking()
  t7060: add test for status --branch on a detached HEAD

Allow easier debugging of a single "git" invocation in our test
scripts.

* js/git-gdb:
  test: facilitate debugging Git executables in tests with gdb

The code to prepare the working tree side of temporary directory
for the "dir-diff" feature forgot that symbolic links need not be
copied (or symlinked) to the temporary area, as the code already
special cases and overwrites them.  Besides, it was wrong to try
computing the object name of the target of symbolic link, which may
not even exist or may be a directory.

* da/difftool:
  difftool: ignore symbolic links in use_wt_file