Tenth batch for 2.20

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

Junio C Hamano committed Nov 13, 2018 at 22:13 UTC d166e6afe5f257217836ef24a73764eba390c58d
1 file changed +98
Documentation/RelNotes/2.20.0.txt
+98
@@ -161,6 +161,18 @@ UI, Workflows & Features
161 "--smtp-auth=none" option, even when the smtp username is given
162 (which turns the authentication on by default).
163
164 + * A fourth class of configuration files (in addition to the
165 + traditional "system wide", "per user in the $HOME directory" and
166 + "per repository in the $GIT_DIR/config") has been introduced so
167 + that different worktrees that share the same repository (hence the
168 + same $GIT_DIR/config file) can use different customization.
169 +
170 + * A pattern with '**' that does not have a slash on either side used
171 + to be an invalid one, but the code now treats such double-asterisks
172 + the same way as two normal asterisks that happen to be adjacent to
173 + each other.
174 + (merge e5bbe09e88 nd/wildmatch-double-asterisk later to maint).
175 +
176
177 Performance, Internal Implementation, Development Support etc.
178
@@ -282,6 +294,44 @@ Performance, Internal Implementation, Development Support etc.
294
295 * Windows port learned to use nano-second resolution file timestamps.
296
297 + * The overly large Documentation/config.txt file have been split into
298 + million little pieces. This potentially allows each individual piece
299 + included into the manual page of the command it affects more easily.
300 +
301 + * Replace three string-list instances used as look-up tables in "git
302 + fetch" with hashmaps.
303 +
304 + * Unify code to read the author-script used in "git am" and the
305 + commands that use the sequencer machinery, e.g. "git rebase -i".
306 +
307 + * In preparation to the day when we can deprecate and remove the
308 + "rebase -p", make sure we can skip and later remove tests for
309 + it.
310 +
311 + * The history traversal used to implement the tag-following has been
312 + optimized by introducing a new helper.
313 +
314 + * The helper function to refresh the cached stat information in the
315 + in-core index has learned to perform the lstat() part of the
316 + operation in parallel on multi-core platforms.
317 +
318 + * The code to traverse objects for reachability, used to decide what
319 + objects are unreferenced and expendable, have been taught to also
320 + consider per-worktree refs of other worktrees as starting points to
321 + prevent data loss.
322 +
323 + * "git add" needs to internally run "diff-files" equivalent, and the
324 + codepath learned the same optimization as "diff-files" has to run
325 + lstat(2) in parallel to find which paths have been updated in the
326 + working tree.
327 +
328 + * The procedure to install dependencies before testing at Travis CI
329 + is getting revamped for both simplicity and flexibility, taking
330 + advantage of the recent move to the vm-based environment.
331 +
332 + * The support for format-patch (and send-email) by the command-line
333 + completion script (in contrib/) has been simplified a bit.
334 +
335
336 Fixes since v2.19
337 -----------------
@@ -447,6 +497,53 @@ Fixes since v2.19
497 '--verbose-log' option.
498 (merge a5f52c6dab sg/test-verbose-log later to maint).
499
500 + * A regression in Git 2.12 era made "git fsck" fall into an infinite
501 + loop while processing truncated loose objects.
502 + (merge 18ad13e5b2 jk/detect-truncated-zlib-input later to maint).
503 +
504 + * "git ls-remote $there foo" was broken by recent update for the
505 + protocol v2 and stopped showing refs that match 'foo' that are not
506 + refs/{heads,tags}/foo, which has been fixed.
507 + (merge 6a139cdd74 jk/proto-v2-ref-prefix-fix later to maint).
508 +
509 + * Additional comment on a tricky piece of code to help developers.
510 + (merge 0afbe3e806 jk/stream-pack-non-delta-clarification later to maint).
511 +
512 + * A couple of tests used to leave the repository in a state that is
513 + deliberately corrupt, which have been corrected.
514 + (merge aa984dbe5e ab/pack-tests-cleanup later to maint).
515 +
516 + * The submodule support has been updated to read from the blob at
517 + HEAD:.gitmodules when the .gitmodules file is missing from the
518 + working tree.
519 + (merge 2b1257e463 ao/submodule-wo-gitmodules-checked-out later to maint).
520 +
521 + * "git fetch" was a bit loose in parsing responses from the other side
522 + when talking over the protocol v2.
523 +
524 + * "git rev-parse --exclude=* --branches --branches" (i.e. first
525 + saying "add only things that do not match '*' out of all branches"
526 + and then adding all branches, without any exclusion this time")
527 + worked as expected, but "--exclude=* --all --all" did not work the
528 + same way, which has been fixed.
529 + (merge 5221048092 ag/rev-parse-all-exclude-fix later to maint).
530 +
531 + * "git send-email --transfer-encoding=..." in recent versions of Git
532 + sometimes produced an empty "Content-Transfer-Encoding:" header,
533 + which has been corrected.
534 + (merge 3c88e46f1a al/send-email-auto-cte-fixup later to maint).
535 +
536 + * The interface into "xdiff" library used to discover the offset and
537 + size of a generated patch hunk by first formatting it into the
538 + textual hunk header "@@ -n,m +k,l @@" and then parsing the numbers
539 + out. A new interface has been introduced to allow callers a more
540 + direct access to them.
541 + (merge 5eade0746e jk/xdiff-interface later to maint).
542 +
543 + * Pathspec matching against a tree object were buggy when negative
544 + pathspec elements were involved, which has been fixed.
545 + (merge b7845cebc0 nd/tree-walk-path-exclusion later to maint).
546 +
547 * Code cleanup, docfix, build fix, etc.
548 (merge 96a7501aad ts/doc-build-manpage-xsl-quietly later to maint).
549 (merge b9b07efdb2 tg/conflict-marker-size later to maint).
@@ -485,3 +582,4 @@ Fixes since v2.19
582 (merge aaaa881822 jk/uploadpack-packobjectshook-fix later to maint).
583 (merge 3063477445 tb/char-may-be-unsigned later to maint).
584 (merge 8c64bc9420 sg/test-rebase-editor-fix later to maint).
585 + (merge 71571cd7d6 ma/sequencer-do-reset-saner-loop-termination later to maint).