GIT 1.6.0
[git/git.git] / Documentation / RelNotes-1.6.0.txt
1 GIT v1.6.0 Release Notes
2 ========================
3
4 User visible changes
5 --------------------
6
7 With the default Makefile settings, most of the programs are now
8 installed outside your $PATH, except for "git", "gitk" and
9 some server side programs that need to be accessible for technical
10 reasons. Invoking a git subcommand as "git-xyzzy" from the command
11 line has been deprecated since early 2006 (and officially announced in
12 1.5.4 release notes); use of them from your scripts after adding
13 output from "git --exec-path" to the $PATH is still supported in this
14 release, but users are again strongly encouraged to adjust their
15 scripts to use "git xyzzy" form, as we will stop installing
16 "git-xyzzy" hardlinks for built-in commands in later releases.
17
18 An earlier change to page "git status" output was overwhelmingly unpopular
19 and has been reverted.
20
21 Source changes needed for porting to MinGW environment are now all in the
22 main git.git codebase.
23
24 By default, packfiles created with this version uses delta-base-offset
25 encoding introduced in v1.4.4. Pack idx files are using version 2 that
26 allows larger packs and added robustness thanks to its CRC checking,
27 introduced in v1.5.2 and v1.4.4.5. If you want to keep your repositories
28 backwards compatible past these versions, set repack.useDeltaBaseOffset
29 to false or pack.indexVersion to 1, respectively.
30
31 We used to prevent sample hook scripts shipped in templates/ from
32 triggering by default by relying on the fact that we install them as
33 unexecutable, but on some filesystems, this approach does not work.
34 They are now shipped with ".sample" suffix. If you want to activate
35 any of these samples as-is, rename them to drop the ".sample" suffix,
36 instead of running "chmod +x" on them. For example, you can rename
37 hooks/post-update.sample to hooks/post-update to enable the sample
38 hook that runs update-server-info, in order to make repositories
39 friendly to dumb protocols (i.e. HTTP).
40
41 GIT_CONFIG, which was only documented as affecting "git config", but
42 actually affected all git commands, now only affects "git config".
43 GIT_LOCAL_CONFIG, also only documented as affecting "git config" and
44 not different from GIT_CONFIG in a useful way, is removed.
45
46 The ".dotest" temporary area "git am" and "git rebase" use is now moved
47 inside the $GIT_DIR, to avoid mistakes of adding it to the project by
48 accident.
49
50 An ancient merge strategy "stupid" has been removed.
51
52
53 Updates since v1.5.6
54 --------------------
55
56 (subsystems)
57
58 * git-p4 in contrib learned "allowSubmit" configuration to control on
59 which branch to allow "submit" subcommand.
60
61 * git-gui learned to stage changes per-line.
62
63 (portability)
64
65 * Changes for MinGW port have been merged, thanks to Johannes Sixt and
66 gangs.
67
68 * Sample hook scripts shipped in templates/ are now suffixed with
69 *.sample.
70
71 * perl's in-place edit (-i) does not work well without backup files on Windows;
72 some tests are rewritten to cope with this.
73
74 (documentation)
75
76 * Updated howto/update-hook-example
77
78 * Got rid of usage of "git-foo" from the tutorial and made typography
79 more consistent.
80
81 * Disambiguating "--" between revs and paths is finally documented.
82
83 (performance, robustness, sanity etc.)
84
85 * index-pack used too much memory when dealing with a deep delta chain.
86 This has been optimized.
87
88 * reduced excessive inlining to shrink size of the "git" binary.
89
90 * verify-pack checks the object CRC when using version 2 idx files.
91
92 * When an object is corrupt in a pack, the object became unusable even
93 when the same object is available in a loose form, We now try harder to
94 fall back to these redundant objects when able. In particular, "git
95 repack -a -f" can be used to fix such a corruption as long as necessary
96 objects are available.
97
98 * Performance of "git-blame -C -C" operation is vastly improved.
99
100 * git-clone does not create refs in loose form anymore (it behaves as
101 if you immediately ran git-pack-refs after cloning). This will help
102 repositories with insanely large number of refs.
103
104 * core.fsyncobjectfiles configuration can be used to ensure that the loose
105 objects created will be fsync'ed (this is only useful on filesystems
106 that does not order data writes properly).
107
108 * "git commit-tree" plumbing can make Octopus with more than 16 parents.
109 "git commit" has been capable of this for quite some time.
110
111 (usability, bells and whistles)
112
113 * even more documentation pages are now accessible via "man" and "git help".
114
115 * A new environment variable GIT_CEILING_DIRECTORIES can be used to stop
116 the discovery process of the toplevel of working tree; this may be useful
117 when you are working in a slow network disk and are outside any working tree,
118 as bash-completion and "git help" may still need to run in these places.
119
120 * By default, stash entries never expire. Set reflogexpire in [gc
121 "refs/stash"] to a reasonable value to get traditional auto-expiration
122 behaviour back
123
124 * Longstanding latency issue with bash completion script has been
125 addressed. This will need to be backmerged to 'maint' later.
126
127 * pager.<cmd> configuration variable can be used to enable/disable the
128 default paging behaviour per command.
129
130 * "git-add -i" has a new action 'e/dit' to allow you edit the patch hunk
131 manually.
132
133 * git-am records the original tip of the branch in ORIG_HEAD before it
134 starts applying patches.
135
136 * git-apply can handle a patch that touches the same path more than once
137 much better than before.
138
139 * git-apply can be told not to trust the line counts recorded in the input
140 patch but recount, with the new --recount option.
141
142 * git-apply can be told to apply a patch to a path deeper than what the
143 patch records with --directory option.
144
145 * git-archive can be told to omit certain paths from its output using
146 export-ignore attributes.
147
148 * git-archive uses the zlib default compression level when creating
149 zip archive.
150
151 * git-archive's command line options --exec and --remote can take their
152 parameters as separate command line arguments, similar to other commands.
153 IOW, both "--exec=path" and "--exec path" are now supported.
154
155 * With -v option, git-branch describes the remote tracking statistics
156 similar to the way git-checkout reports by how many commits your branch
157 is ahead/behind.
158
159 * git-branch's --contains option used to always require a commit parameter
160 to limit the branches with; it now defaults to list branches that
161 contains HEAD if this parameter is omitted.
162
163 * git-branch's --merged and --no-merged option used to always limit the
164 branches relative to the HEAD, but they can now take an optional commit
165 argument that is used in place of HEAD.
166
167 * git-bundle can read the revision arguments from the standard input.
168
169 * git-cherry-pick can replay a root commit now.
170
171 * git-clone can clone from a remote whose URL would be rewritten by
172 configuration stored in $HOME/.gitconfig now.
173
174 * "git-clone --mirror" is a handy way to set up a bare mirror repository.
175
176 * git-cvsserver learned to respond to "cvs co -c".
177
178 * git-diff --check now checks leftover merge conflict markers.
179
180 * "git-diff -p" learned to grab a better hunk header lines in
181 BibTex, Pascal/Delphi, and Ruby files and also pays attention to
182 chapter and part boundary in TeX documents.
183
184 * When remote side used to have branch 'foo' and git-fetch finds that now
185 it has branch 'foo/bar', it refuses to lose the existing remote tracking
186 branch and its reflog. The error message has been improved to suggest
187 pruning the remote if the user wants to proceed and get the latest set
188 of branches from the remote, including such 'foo/bar'.
189
190 * fast-export learned to export and import marks file; this can be used to
191 interface with fast-import incrementally.
192
193 * fast-import and fast-export learned to export and import gitlinks.
194
195 * "gitk" left background process behind after being asked to dig very deep
196 history and the user killed the UI; the process is killed when the UI goes
197 away now.
198
199 * git-rebase records the original tip of branch in ORIG_HEAD before it is
200 rewound.
201
202 * "git rerere" can be told to update the index with auto-reused resolution
203 with rerere.autoupdate configuration variable.
204
205 * git-rev-parse learned $commit^! and $commit^@ notations used in "log"
206 family. These notations are available in gitk as well, because the gitk
207 command internally uses rev-parse to interpret its arguments.
208
209 * git-rev-list learned --children option to show child commits it
210 encountered during the traversal, instead of showing parent commits.
211
212 * git-send-mail can talk not just over SSL but over TLS now.
213
214 * git-shortlog honors custom output format specified with "--pretty=format:".
215
216 * "git-stash save" learned --keep-index option. This lets you stash away the
217 local changes and bring the changes staged in the index to your working
218 tree for examination and testing.
219
220 * git-stash also learned branch subcommand to create a new branch out of
221 stashed changes.
222
223 * git-status gives the remote tracking statistics similar to the way
224 git-checkout reports by how many commits your branch is ahead/behind.
225
226 * "git-svn dcommit" is now aware of auto-props setting the subversion user
227 has.
228
229 * You can tell "git status -u" to even more aggressively omit checking
230 untracked files with --untracked-files=no.
231
232 * Original SHA-1 value for "update-ref -d" is optional now.
233
234 * Error codes from gitweb are made more descriptive where possible, rather
235 than "403 forbidden" as we used to issue everywhere.
236
237 (internal)
238
239 * git-merge has been reimplemented in C.
240
241
242 Fixes since v1.5.6
243 ------------------
244
245 All of the fixes in v1.5.6 maintenance series are included in
246 this release, unless otherwise noted.
247
248 * git-clone ignored its -u option; the fix needs to be backported to
249 'maint';
250
251 * git-mv used to lose the distinction between changes that are staged
252 and that are only in the working tree, by staging both in the index
253 after moving such a path.
254
255 * "git-rebase -i -p" rewrote the parents to wrong ones when amending
256 (either edit or squash) was involved, and did not work correctly
257 when fast forwarding.
258