xdiff: add hunk_func()

Add a way to register a callback function that is gets passed the
start line and line count of each hunk of a diff.  Only standard
types are used.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame: use hunk_func(), part 1

Use blame_chunk_cb() directly as hunk_func() callback, without detour
through xdi_diff_hunks().

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame: use hunk_func(), part 2

Use handle_split_cb() directly as hunk_func() callback, without going
through xdi_diff_hunks().

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame: factor out helper for calling xdi_diff()

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdiff: remove emit_func() and xdi_diff_hunks()

The functions are unused now, remove them.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdiff: remove unused functions

The functions xdl_cha_first(), xdl_cha_next() and xdl_atol() are not used
by us.  While removing them increases the difference to the upstream
version of libxdiff, it only adds a bit to the more than 600 differing
lines in xutils.c (mmfile_t management was simplified significantly when
the library was imported initially).  Besides, if upstream modifies these
functions in the future, we won't need to think about importing those
changes, so in that sense it makes tracking modifications easier.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'master' into next

* master:
  The tenth batch of topics
  Update draft release notes to 1.7.10.2
Merge branch 'master' into next
Merge branch 'rs/xdiff-lose-emit-func' into next

Simplifies the interface between the implementation of "blame" and
underlying xdiff engine, and removes a lot of unnecessary code from
the latter.

By René Scharfe
* rs/xdiff-lose-emit-func:
  xdiff: remove unused functions
  xdiff: remove emit_func() and xdi_diff_hunks()
  blame: factor out helper for calling xdi_diff()
  blame: use hunk_func(), part 2
  blame: use hunk_func(), part 1
  xdiff: add hunk_func()
git p4: add test for tag import/export enabled via config

This adds a test for git p4 to check it can import/export tags
when enabled via a config variable rather than on the command
line.

Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git p4: fix bug when verbose enabled with tag export

Wrong variable name used when verbose enabled, causes failure.

Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git p4: fix bug when enabling tag import/export via config variables

Use Python's True, not true. Causes failure when enabling tag
import or export in "git p4" using a config option rather than
the command line.

Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'ld/git-p4-tags-and-labels' into next

Trivial fixes to the machinery to import/export tags to p4.

By Luke Diamand
* ld/git-p4-tags-and-labels:
  git p4: fix bug when enabling tag import/export via config variables
  git p4: fix bug when verbose enabled with tag export
  git p4: add test for tag import/export enabled via config
Merge branch 'jk/blame-tree' into HEAD

By Jeff King
via Jeff King
* jk/blame-tree:
  blame-tree wip
Merge branch 'jk/builtin-attr' into HEAD

By Jeff King
via Jeff King
* jk/builtin-attr:
  attr: drop C/C++ default extension mapping
  attr: map builtin userdiff drivers to well-known extensions
Merge branch 'jk/bundle-fetch' into HEAD

By Jeff King
via Jeff King
* jk/bundle-fetch:
  clone: give advice on how to resume a failed clone
  remote-curl: resume interrupted bundle transfers
  remote-curl: show progress for bundle downloads
  progress: allow pure-throughput progress meters
  remote-curl: try base $URL after $URL/info/refs
  remote-curl: auto-detect bundles when fetching refs
  remote-curl: free "discovery" object
  bundle: add is_bundle_buf helper
  transport: factor out bundle to ref list conversion
  remote-curl: use http callback for requesting refs
  http: add a public function for arbitrary-callback request
  http: refactor http_request function
  http: turn off curl signals
  t/lib-httpd: check for NO_CURL
Merge branch 'jk/cache-patch-id' into HEAD

By Jeff King
via Jeff King
* jk/cache-patch-id:
  cache patch ids on disk
  cherry: read default config
  implement metadata cache subsystem
  map: implement persistent maps
  decorate: use "map" for the underlying implementation
  fast-export: use object to uint32 map instead of "decorate"
  implement generic key/value map
Merge branch 'jk/child-cleanup' into HEAD

By Jeff King
via Jeff King
* jk/child-cleanup:
  send-pack: kill pack-objects helper on signal or exit
Merge branch 'jk/config-sources' into HEAD

By Jeff King
via Jeff King
* jk/config-sources:
  show sources of config options (WIP)
Merge branch 'jk/describe' into HEAD

By Jeff King
via Jeff King
* jk/describe:
  describe WIP