Stefan Beller <sbeller@xxxxxxxxxx> writes:
> the information to what is shown. For example:
>
> $ ./git log --oneline --blobfind=v2.0.0:Makefile
> b2feb64309 Revert the whole "ask curl-config" topic for now
> 47fbfded53 i18n: only extract comments marked with "TRANSLATORS:"
This part is a bit stale???
> diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
> index dd0dba5b1d..67a99e522b 100644
> --- a/Documentation/diff-options.txt
> +++ b/Documentation/diff-options.txt
> @@ -500,6 +500,12 @@ information.
> --pickaxe-regex::
> Treat the <string> given to `-S` as an extended POSIX regular
> expression to match.
> +
> +--find-object=<object-id>::
> + Restrict the output such that one side of the diff
> + matches the given object id. The object can be a blob,
> + or gitlink entry.
OK. In principle you should also be able to find a tree, but I do
not now how useful it would be. Extending it to gitlink, which is
another kind of leaf node in the reachability DAG, does make tons of
sense---it's a no brainer that I feel ashamed not to have thought of
myself ;-)
> +LIB_OBJS += diffcore-oidfind.o
Just to nitpick, but "blobfind" was to find "blob", and if you are
extending it to find any "object", then that should be "objfind".
"oid" is _A_ way to refer to an object (i.e. the _name_ of it), and
name is *not* the same as the thing the name refers to, so...
> +static int parse_oidfind_opt(struct diff_options *opt, const char *arg)
> +{
> + struct object_id oid;
> +
> + /* We don't even need to have the object, any oid works. */
> + if (get_oid_blob(arg, &oid))
> + return error("unable to resolve '%s'", arg);
Should this still be get_oid_blob(), or should it be less specific
to blobs?
> +test_expect_success 'find the greeting blob' '
> + cat >expect <<-EOF &&
> + Revert "add the greeting blob"
> + add the greeting blob
> + EOF
> +
> + git log --format=%s --find-object=greeting^{blob} >actual &&
> +
> + test_cmp expect actual
> +'
Makes sense.
> +
> +test_expect_success 'setup a submodule' '
> + test_create_repo sub &&
> + test_commit -C sub sub &&
> + git submodule add ./sub sub &&
> + git commit -a -m "add sub"
> +'
> +
> +test_expect_success 'find a submodule' '
> + cat >expect <<-EOF &&
> + add sub
> + EOF
> +
> + git log --format=%s --find-object=HEAD:sub >actual &&
> +
> + test_cmp expect actual
> +'
Nice (and cute).
> +test_done
Looking good. Thanks.
