Merge branch 'bc/http-keep-memory-given-to-curl'

Older cURL wanted piece of memory we call it with to be stable, but
we updated the auth material after handing it to a call.

* bc/http-keep-memory-given-to-curl:
  http.c: don't rewrite the user:passwd string multiple times
Merge branch 'jk/pull-into-dirty-unborn'

"git pull" into nothing trashed "local changes" that were in the
index, and this avoids it.

* jk/pull-into-dirty-unborn:
  pull: merge into unborn by fast-forwarding from empty tree
  pull: update unborn branch tip after index
Merge branch 'mt/send-email-cc-match-fix'

Logic used by git-send-email to suppress cc mishandled names that
need RFC2047 quoting.

* mt/send-email-cc-match-fix:
  send-email: sanitize author when writing From line
  send-email: add test for duplicate utf8 name
Merge branch 'rr/cherry-pick-fast-forward-reflog-message'

The reflog message created when "git cherry-pick" fast-forwarded
did not say anything but "cherry-pick", but it now says
"cherry-pick: fast-forward".

* rr/cherry-pick-fast-forward-reflog-message:
  sequencer: write useful reflog message for fast-forward
Merge branch 'jk/add-i-custom-diff-algo'

* jk/add-i-custom-diff-algo:
  add -i: add extra options at the right place in "diff" command line
  add--interactive: respect diff.algorithm
Update draft release notes to 1.8.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'jh/checkout-auto-tracking' into maint

* jh/checkout-auto-tracking:
  glossary: Update and rephrase the definition of a remote-tracking branch
  branch.c: Validate tracking branches with refspecs instead of refs/remotes/*
  t9114.2: Don't use --track option against "svn-remote"-tracking branches
  t7201.24: Add refspec to keep --track working
  t3200.39: tracking setup should fail if there is no matching refspec.
  checkout: Use remote refspecs when DWIMming tracking branches
  t2024: Show failure to use refspec when DWIMming remote branch names
  t2024: Add tests verifying current DWIM behavior of 'git checkout <branch>'
Merge branch 'mh/fetch-into-shallow' into maint

* mh/fetch-into-shallow:
  t5500: add test for fetching with an unknown 'shallow'
  upload-pack: ignore 'shallow' lines with unknown obj-ids
Merge branch 'jk/subtree-do-not-push-if-split-fails' into maint

* jk/subtree-do-not-push-if-split-fails:
  contrib/subtree: don't delete remote branches if split fails
Merge branch 'kb/ancestry-path-threedots' into maint

* kb/ancestry-path-threedots:
  revision.c: treat A...B merge bases as if manually specified
  t6019: demonstrate --ancestry-path A...B breakage
Merge branch 'mk/combine-diff-context-horizon-fix' into maint

* mk/combine-diff-context-horizon-fix:
  combine-diff.c: Fix output when changes are exactly 3 lines apart
Merge branch 'jc/strbuf-branchname-fix' into maint

* jc/strbuf-branchname-fix:
  strbuf_branchname(): do not double-expand @{-1}~22
Merge branch 'rs/commit-m-no-edit' into maint

* rs/commit-m-no-edit:
  commit: don't start editor if empty message is given with -m
Merge branch 'tr/push-no-verify-doc' into maint

* tr/push-no-verify-doc:
  Document push --no-verify
Merge branch 'nd/urls-doc-no-file-hyperlink-fix' into maint

* nd/urls-doc-no-file-hyperlink-fix:
  urls.txt: avoid auto converting to hyperlink
Merge branch 'tg/maint-zsh-svn-remote-prompt' into maint

* tg/maint-zsh-svn-remote-prompt:
  prompt: fix show upstream with svn and zsh
Merge branch 'fc/show-branch-in-rebase-am' into maint

* fc/show-branch-in-rebase-am:
  prompt: fix for simple rebase
Merge branch 'rr/push-head' into maint

* rr/push-head:
  push: make push.default = current use resolved HEAD
  push: fail early with detached HEAD and current
  push: factor out the detached HEAD error message
Merge branch 'ks/difftool-dir-diff-copy-fix' into maint

* ks/difftool-dir-diff-copy-fix:
  difftool --dir-diff: allow changing any clean working tree file
Start preparing for 1.8.3.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>