Describe two-dot and three-dot notation for diff endpoints.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Mike Hommey 2007-08-27 22:05:19 -07:00 committed by Junio C Hamano
parent 6257271629
commit 2b9232cc23

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@ -22,10 +22,10 @@ tree and the index file, or the index file and the working tree.
words, the differences are what you _could_ tell git to words, the differences are what you _could_ tell git to
further add to the index but you still haven't. You can further add to the index but you still haven't. You can
stage these changes by using gitlink:git-add[1]. stage these changes by using gitlink:git-add[1].
+
If exactly two paths are given, and at least one is untracked, If exactly two paths are given, and at least one is untracked,
compare the two files / directories. This behavior can be compare the two files / directories. This behavior can be
forced by --no-index. forced by --no-index.
'git-diff' [--options] --cached [<commit>] [--] [<path>...]:: 'git-diff' [--options] --cached [<commit>] [--] [<path>...]::
@ -44,8 +44,22 @@ tree and the index file, or the index file and the working tree.
'git-diff' [--options] <commit> <commit> [--] [<path>...]:: 'git-diff' [--options] <commit> <commit> [--] [<path>...]::
This form is to view the changes between two <commit>, This is to view the changes between two arbitrary
for example, tips of two branches. <commit>.
'git-diff' [--options] <commit>..<commit> [--] [<path>...]::
This is synonymous to the previous form. If <commit> on
one side is omitted, it will have the same effect as
using HEAD instead.
'git-diff' [--options] <commit>...<commit> [--] [<path>...]::
This form is to view the changes on the branch containing
and up to the second <commit>, starting at a common ancestor
of both <commit>. "git-diff A...B" is equivalent to
"git-diff $(git-merge-base A B) B". You can omit any one
of <commit>, which has the same effect as using HEAD instead.
Just in case if you are doing something exotic, it should be Just in case if you are doing something exotic, it should be
noted that all of the <commit> in the above description can be noted that all of the <commit> in the above description can be
@ -53,7 +67,10 @@ any <tree-ish>.
For a more complete list of ways to spell <commit>, see For a more complete list of ways to spell <commit>, see
"SPECIFYING REVISIONS" section in gitlink:git-rev-parse[1]. "SPECIFYING REVISIONS" section in gitlink:git-rev-parse[1].
However, "diff" is about comparing two _endpoints_, not ranges,
and the range notations ("<commit>..<commit>" and
"<commit>...<commit>") do not mean a range as defined in the
"SPECIFYING RANGES" section in gitlink:git-rev-parse[1].
OPTIONS OPTIONS
------- -------
@ -97,6 +114,18 @@ the tip of the current branch, but limit the comparison to the
file "test". file "test".
<3> Compare the version before the last commit and the last commit. <3> Compare the version before the last commit and the last commit.
Comparing branches::
+
------------
$ git diff topic master <1>
$ git diff topic..master <2>
$ git diff topic...master <3>
------------
+
<1> Changes between the tips of the topic and the master branches.
<2> Same as above.
<3> Changes that occured on the master branch since when the topic
branch was started off it.
Limiting the diff output:: Limiting the diff output::
+ +