Documentation / RelNotes / 1.7.10.txton commit perf: compare diff algorithms (8555123)
   1Git v1.7.10 Release Notes
   2=========================
   3
   4Updates since v1.7.9
   5--------------------
   6
   7UI, Workflows & Features
   8
   9 * Teams for localizing the messages from the Porcelain layer of
  10   commands are starting to form, thanks to Jiang Xin who volunteered
  11   to be the localization coordinator.  An initial set of translated
  12   messages for simplified chinese is available.
  13
  14 * The configuration mechanism learned an "include" facility; an
  15   assignment to the include.path pseudo-variable causes the named
  16   file to be included in-place when Git looks up configuration
  17   variables.
  18
  19 * A content filter (clean/smudge) used to be just a way to make the
  20   recorded contents "more useful", and allowed to fail; a filter can
  21   new optionally be marked as "required".
  22
  23 * Options whose names begin with "--no-" (e.g. the "--no-verify"
  24   option of the "git commit" command) can be negated by omitting
  25   "no-" from its name, e.g. "git commit --verify".
  26
  27 * "git am" learned to pass "-b" option to underlying "git mailinfo", so
  28   that bracketed string other than "PATCH" at the beginning can be kept.
  29
  30 * "git clone" learned "--single-branch" option to limit cloning to a
  31   single branch (surprise!).
  32
  33 * "git clone" learned to detach the HEAD in the resulting repository
  34   when the source repository's HEAD does not point to a branch.
  35
  36 * When showing a patch while ignoring whitespace changes, the context
  37   lines are taken from the postimage, in order to make it easier to
  38   view the output.
  39
  40 * "diff-highlight" filter (in contrib/) was updated to produce more
  41   aesthetically pleasing output.
  42
  43 * "fsck" learned "--no-dangling" option to omit dangling object
  44   information.
  45
  46 * "git merge" in an interactive session learned to spawn the editor
  47   by default to let the user edit the auto-generated merge message,
  48   to encourage people to explain their merges better. Legacy scripts
  49   can export GIT_MERGE_AUTOEDIT=no to retain the historical behavior.
  50   Both "git merge" and "git pull" can be given --no-edit from the
  51   command line to accept the auto-generated merge message.
  52
  53 * "git push" learned the "--prune" option, similar to "git fetch".
  54
  55 * "git symbolic-ref" learned the "--short" option to abbreviate the
  56   refname it shows unambiguously.
  57
  58 * "git tag --list" can be given "--points-at <object>" to limit its
  59   output to those that point at the given object.
  60
  61 * "gitweb" allows intermediate entries in the directory hierarchy
  62   that leads to a projects to be clicked, which in turn shows the
  63   list of projects inside that directory.
  64
  65 * "gitweb" learned to read various pieces of information for the
  66   repositories lazily, instead of reading everything that could be
  67   needed (including the ones that are not necessary for a specific
  68   task).
  69
  70 * Project search in "gitweb" shows the substring that matched in the
  71   project name and description highlighted.
  72
  73Foreign Interface
  74
  75 * Improved handling of views, labels and branches in git-p4 (in contrib).
  76
  77 * "git-p4" (in contrib) suffered from unnecessary merge conflicts when
  78   p4 expanded the embedded $RCS$-like keywords; it can be now told to
  79   unexpand them.
  80
  81 * Some "git-svn" updates.
  82
  83 * "vcs-svn"/"svn-fe" learned to read dumps with svn-deltas and
  84   support incremental imports.
  85
  86Performance
  87
  88 * During "git upload-pack" in response to "git fetch", unnecessary calls
  89   to parse_object() have been eliminated, to help performance in
  90   repositories with excessive number of refs.
  91
  92Internal Implementation (please report possible regressions)
  93
  94 * Recursive call chains in "git index-pack" to deal with long delta
  95   chains have been flattened, to reduce the stack footprint.
  96
  97 * Use of add_extra_ref() API is now gone, to make it possible to
  98   cleanly restructure the overall refs API.
  99
 100 * The command line parser of "git pack-objects" now uses parse-options
 101   API.
 102
 103 * The test suite supports the new "test_pause" helper function.
 104
 105 * Parallel to the test suite, there is a beginning of performance
 106   benchmarking framework.
 107
 108 * t/Makefile is adjusted to prevent newer versions of GNU make from
 109   running tests in seemingly random order.
 110
 111Also contains minor documentation updates and code clean-ups.
 112
 113
 114Fixes since v1.7.9
 115------------------
 116
 117Unless otherwise noted, all the fixes since v1.7.9 in the maintenance
 118releases are contained in this release (see release notes to them for
 119details).
 120
 121 * The code to synthesize the fake ancestor tree used by 3-way merge
 122   fallback in "git am" was not prepared to read a patch created with
 123   a non-standard -p<num> value.
 124   (merge a61ba26 jc/am-3-nonstandard-popt later to maint).
 125
 126 * "gitweb" used to drop warnings in the log file when "heads" view is
 127   accessed in a repository whose HEAD does not point at a valid
 128   branch.
 129
 130---
 131exec >/var/tmp/1
 132O=v1.7.9.2-383-gb8b5290
 133echo O=$(git describe)
 134git log --first-parent --oneline ^maint $O..
 135echo
 136git shortlog --no-merges ^maint $O..