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git: add --no-replace-objects option to disable replacing

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Commit dae556b (environment: add global variable to disable replacement)
adds a variable to enable/disable replacement, and it is enabled by
default for most commands.

So there is no way to disable it for some commands, which is annoying
when we want to get information about a commit that has been replaced.

For example:

$ git cat-file -p N

would output information about the replacement commit if commit N is
replaced.

With the "--no-replace-objects" option that this patch adds it is
possible to get information about the original commit using:

$ git --no-replace-objects cat-file -p N

While at it, let's add some documentation about this new option in the
"git replace" man page too.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2009-10-12 22:30:32 +02:00 committed by Junio C Hamano
parent 78d553b7d7
commit b0fa7ab51b
4 changed files with 36 additions and 2 deletions
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21
Documentation/git-replace.txt
View File

@ -23,6 +23,26 @@ replacement object.
Unless `-f` is given, the replace reference must not yet exist in
`.git/refs/replace/` directory.
Replace references will be used by default by all git commands except
those doing reachability traversal (prune, pack transfer and fsck).
It is possible to disable use of replacement refs for any command
using the --no-replace-objects option just after "git".
For example if commit "foo" has been replaced by commit "bar":
------------------------------------------------
$ git --no-replace-object cat-file commit foo
------------------------------------------------
show information about commit "foo", while:
------------------------------------------------
$ git cat-file commit foo
------------------------------------------------
show information about commit "bar".
OPTIONS
-------
-f::
@ -54,6 +74,7 @@ SEE ALSO
--------
linkgit:git-tag[1]
linkgit:git-branch[1]
linkgit:git[1]
Author
------

6
Documentation/git.txt
View File

@ -10,7 +10,7 @@ SYNOPSIS
--------
[verse]
'git' [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]
[-p|--paginate|--no-pager]
[-p|--paginate|--no-pager] [--no-replace-objects]
[--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]
[--help] COMMAND [ARGS]
@ -237,6 +237,10 @@ help ...`.
environment is not set, it is set to the current working
directory.
--no-replace-objects::
Do not use replacement refs to replace git objects. See
linkgit:git-replace[1] for more information.
FURTHER DOCUMENTATION
---------------------

4
git.c
View File

@ -6,7 +6,7 @@
const char git_usage_string[] =
"git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]\n"
" [-p|--paginate|--no-pager]\n"
" [-p|--paginate|--no-pager] [--no-replace-objects]\n"
" [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]\n"
" [--help] COMMAND [ARGS]";
@ -87,6 +87,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
use_pager = 0;
if (envchanged)
*envchanged = 1;
} else if (!strcmp(cmd, "--no-replace-objects")) {
read_replace_refs = 0;
} else if (!strcmp(cmd, "--git-dir")) {
if (*argc < 2) {
fprintf(stderr, "No directory given for --git-dir.\n" );

7
t/t6050-replace.sh
View File

@ -70,6 +70,13 @@ test_expect_success 'replace the author' '
git show $HASH2 | grep "O Thor"
'
test_expect_success 'test --no-replace-objects option' '
git cat-file commit $HASH2 | grep "author O Thor" &&
git --no-replace-objects cat-file commit $HASH2 | grep "author A U Thor" &&
git show $HASH2 | grep "O Thor" &&
git --no-replace-objects show $HASH2 | grep "A U Thor"
'
cat >tag.sig <<EOF
object $HASH2
type commit