Git v2.9.1 Release Notes
========================

Fixes since v2.9
----------------

 * When "git daemon" is run without --[init-]timeout specified, a
   connection from a client that silently goes offline can hang around
   for a long time, wasting resources.  The socket-level KEEPALIVE has
   been enabled to allow the OS to notice such failed connections.

 * The commands in `git log` family take %C(auto) in a custom format
   string.  This unconditionally turned the color on, ignoring
   --no-color or with --color=auto when the output is not connected to
   a tty; this was corrected to make the format truly behave as
   "auto".

 * "git rev-list --count" whose walk-length is limited with "-n"
   option did not work well with the counting optimized to look at the
   bitmap index.

 * "git show -W" (extend hunks to cover the entire function, delimited
   by lines that match the "funcname" pattern) used to show the entire
   file when a change added an entire function at the end of the file,
   which has been fixed.

 * The documentation set has been updated so that literal commands,
   configuration variables and environment variables are consistently
   typeset in fixed-width font and bold in manpages.

 * "git svn propset" subcommand that was added in 2.3 days is
   documented now.

 * The documentation tries to consistently spell "GPG"; when
   referring to the specific program name, "gpg" is used.

 * "git reflog" stopped upon seeing an entry that denotes a branch
   creation event (aka "unborn"), which made it appear as if the
   reflog was truncated.

 * The git-prompt scriptlet (in contrib/) was not friendly with those
   who uses "set -u", which has been fixed.

 * A codepath that used alloca(3) to place an unbounded amount of data
   on the stack has been updated to avoid doing so.

 * "git update-index --add --chmod=+x file" may be usable as an escape
   hatch, but not a friendly thing to force for people who do need to
   use it regularly.  "git add --chmod=+x file" can be used instead.

 * Build improvements for gnome-keyring (in contrib/)

 * "git status" used to say "working directory" when it meant "working
   tree".

 * Comments about misbehaving FreeBSD shells have been clarified with
   the version number (9.x and before are broken, newer ones are OK).

 * "git cherry-pick A" worked on an unborn branch, but "git
   cherry-pick A..B" didn't.

 * "git add -i/-p" learned to honor diff.compactionHeuristic
   experimental knob, so that the user can work on the same hunk split
   as "git diff" output.

 * "log --graph --format=" learned that "%>|(N)" specifies the width
   relative to the terminal's left edge, not relative to the area to
   draw text that is to the right of the ancestry-graph section.  It
   also now accepts negative N that means the column limit is relative
   to the right border.

 * The ownership rule for the piece of memory that hold references to
   be fetched in "git fetch" was screwy, which has been cleaned up.

 * "git bisect" makes an internal call to "git diff-tree" when
   bisection finds the culprit, but this call did not initialize the
   data structure to pass to the diff-tree API correctly.

 * Formats of the various data (and how to validate them) where we use
   GPG signature have been documented.

 * Fix an unintended regression in v2.9 that breaks "clone --depth"
   that recurses down to submodules by forcing the submodules to also
   be cloned shallowly, which many server instances that host upstream
   of the submodules are not prepared for.

 * Fix unnecessarily waste in the idiomatic use of ': ${VAR=default}'
   to set the default value, without enclosing it in double quotes.

 * Some platform-specific code had non-ANSI strict declarations of C
   functions that do not take any parameters, which has been
   corrected.

 * The internal code used to show local timezone offset is not
   prepared to handle timestamps beyond year 2100, and gave a
   bogus offset value to the caller.  Use a more benign looking
   +0000 instead and let "git log" going in such a case, instead
   of aborting.

 * One among four invocations of readlink(1) in our test suite has
   been rewritten so that the test can run on systems without the
   command (others are in valgrind test framework and t9802).

 * t/perf needs /usr/bin/time with GNU extension; the invocation of it
   is updated to "gtime" on Darwin.

 * A bug, which caused "git p4" while running under verbose mode to
   report paths that are omitted due to branch prefix incorrectly, has
   been fixed; the command said "Ignoring file outside of prefix" for
   paths that are _inside_.

 * The top level documentation "git help git" still pointed at the
   documentation set hosted at now-defunct google-code repository.
   Update it to point to https://git.github.io/htmldocs/git.html
   instead.

Also contains minor documentation updates and code clean-ups.