[PATCH/RFC] glossary: a revision is just a commit

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The current definition of 'revision' sounds like it is saying that a
revision is a tree object.  In reality it is just a commit.

This should be especially useful for people used to other revision
control systems trying to see how familiar concepts translate into git
terms.

Reported-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
Junio C Hamano wrote:
> On Apr 21, 2013 12:41 AM, "Jonathan Nieder" <jrnieder@xxxxxxxxx> wrote:

>>> revision:: A particular state of files and directories which was
>>> stored in the object database. It is referenced by a commit object.
>>
>> So a revision is a tree?
[...]
> That's a historical misnomer. Some places in the documentation use revision
> as if the word were interchangeable with object name, and HEAD:path listed
> in specifying revision section is a prime example of it. What the section
> lists is historically called extended SHA-1 expression, essentially what
> get_sha1() can grok down to a single object name (as opposed to a slice of
> history, which is a revision range).

Thanks.

 Documentation/glossary-content.txt | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Documentation/glossary-content.txt b/Documentation/glossary-content.txt
index eb7ba84f..521fceeb 100644
--- a/Documentation/glossary-content.txt
+++ b/Documentation/glossary-content.txt
@@ -430,9 +430,7 @@ should not be combined with other pathspec.
 	<<def_merge,merge>> left behind.
 
 [[def_revision]]revision::
-	A particular state of files and directories which was stored in the
-	<<def_object_database,object database>>. It is referenced by a
-	<<def_commit_object,commit object>>.
+	Synonym for <<def_commit,commit>> (the noun).
 
 [[def_rewind]]rewind::
 	To throw away part of the development, i.e. to assign the
-- 
1.8.2.1

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