[PATCH v2 0/3] for-each-ref: add :remoteref and :remotename specifiers

This introduces support for

	git for-each-ref \
		--format="%(merge:remotename),%(merge:remoteref)"
	git for-each-ref \
		--format="%(push:remotename),%(push:remoteref)"

to figure out the remote nickname as well as the name of the corresponding branch on the remote.

Note: the `%(push:remotename)` placeholder is only interpolated by the value
of `branch.<name>.pushRemote`; unlike `git push`, it does not fall back to
`branch.<name>.remote`. Likewise, `%(push:remoteref)` interpolates to the
empty string unless `remote.<nick>.pushRefs` is configured.

This is useful for third-party tools that need to know this type of information for tons of branches.

Changes since v1:

- added the missing sign-offs

- removed a full stop from the end of the oneline of 2/3 (quite frankly, I am
  surprised I was not slammed for that in the first round of reviews ;-))

- fixed stale commit message parts that were leftovers from previous, internal
  review rounds

- moved the added git-for-each-ref.txt documentation into its own paragraph

- renamed the :remote-name and :remote-ref suffixes into the dashless form
  :remotename and :remoteref, following the example of :trackshort

- clarified the motivation for not DWIMming in the commit messages

- added fields `push` and `push_remote` to the atom to precompute whether we
  are talking about a `push` atom and whether it has a suffix starting with
  `remote`, respectively

Note that this last point actually fixes a bug when the user specified more than one suffix (`push:short,remotename`; even if that `short` has no effect, the `remotename` should).

J Wyman (1):
  for-each-ref: let upstream/push optionally remote ref name

Johannes Schindelin (2):
  for-each-ref: let upstream/push optionally report the remote name
  for-each-ref: test :remotename and :remoteref

 Documentation/git-for-each-ref.txt | 20 ++++++++++-------
 ref-filter.c                       | 46 ++++++++++++++++++++++++++++++++------
 remote.c                           | 30 +++++++++++++++++++++++++
 remote.h                           |  2 ++
 t/t6300-for-each-ref.sh            | 32 ++++++++++++++++++++++++++
 5 files changed, 115 insertions(+), 15 deletions(-)

base-commit: 217f2767cbcb562872437eed4dec62e00846d90c
Published-As: https://github.com/dscho/git/releases/tag/ref-filter-remote-name-v2
Fetch-It-Via: git fetch https://github.com/dscho/git ref-filter-remote-name-v2

Interdiff vs v1:
 diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
 index ba1147a1223..22767025850 100644
 --- a/Documentation/git-for-each-ref.txt
 +++ b/Documentation/git-for-each-ref.txt
 @@ -140,10 +140,11 @@ upstream::
  	(behind), "<>" (ahead and behind), or "=" (in sync). `:track`
  	also prints "[gone]" whenever unknown upstream ref is
  	encountered. Append `:track,nobracket` to show tracking
 -	information without brackets (i.e "ahead N, behind M").  Also
 -	respects `:remote-name` to state the name of the *remote* instead
 -	of the ref, and `:remote-ref` to state the name of the *reference*
 -	as locally known by the remote.
 +	information without brackets (i.e "ahead N, behind M").
 ++
 +Also respects `:remotename` to state the name of the *remote* instead
 +of the ref, and `:remoteref` to state the name of the *reference* as
 +locally known by the remote.
  +
  Has no effect if the ref does not have tracking information associated
  with it.  All the options apart from `nobracket` are mutually exclusive,
 @@ -152,7 +153,7 @@ but if used together the last option is selected.
  push::
  	The name of a local ref which represents the `@{push}`
  	location for the displayed ref. Respects `:short`, `:lstrip`,
 -	`:rstrip`, `:track`, `:trackshort`, `:remote-name`, and `:remote-ref`
 +	`:rstrip`, `:track`, `:trackshort`, `:remotename`, and `:remoteref`
  	options as `upstream` does. Produces an empty string if no `@{push}`
  	ref is configured.
  
 diff --git a/ref-filter.c b/ref-filter.c
 index 696a8241408..b4b2c9b2190 100644
 --- a/ref-filter.c
 +++ b/ref-filter.c
 @@ -80,7 +80,7 @@ static struct used_atom {
  				RR_REF, RR_TRACK, RR_TRACKSHORT, RR_REMOTE_NAME, RR_REMOTE_REF
  			} option;
  			struct refname_atom refname;
 -			unsigned int nobracket : 1;
 +			unsigned int nobracket : 1, push : 1, push_remote : 1;
  		} remote_ref;
  		struct {
  			enum { C_BARE, C_BODY, C_BODY_DEP, C_LINES, C_SIG, C_SUB, C_TRAILERS } option;
 @@ -139,6 +139,9 @@ static void remote_ref_atom_parser(const struct ref_format *format, struct used_
  	struct string_list params = STRING_LIST_INIT_DUP;
  	int i;
  
 +	if (!strcmp(atom->name, "push") || starts_with(atom->name, "push:"))
 +		atom->u.remote_ref.push = 1;
 +
  	if (!arg) {
  		atom->u.remote_ref.option = RR_REF;
  		refname_atom_parser_internal(&atom->u.remote_ref.refname,
 @@ -158,11 +161,13 @@ static void remote_ref_atom_parser(const struct ref_format *format, struct used_
  			atom->u.remote_ref.option = RR_TRACKSHORT;
  		else if (!strcmp(s, "nobracket"))
  			atom->u.remote_ref.nobracket = 1;
 -		else if (!strcmp(s, "remote-name"))
 +		else if (!strcmp(s, "remotename")) {
  			atom->u.remote_ref.option = RR_REMOTE_NAME;
 -		else if (!strcmp(s, "remote-ref"))
 +			atom->u.remote_ref.push_remote = 1;
 +		} else if (!strcmp(s, "remoteref")) {
  			atom->u.remote_ref.option = RR_REMOTE_REF;
 -		else {
 +			atom->u.remote_ref.push_remote = 1;
 +		} else {
  			atom->u.remote_ref.option = RR_REF;
  			refname_atom_parser_internal(&atom->u.remote_ref.refname,
  						     arg, atom->name);
 @@ -1253,7 +1258,7 @@ static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
  			*s = "<>";
  	} else if (atom->u.remote_ref.option == RR_REMOTE_NAME) {
  		int explicit;
 -		const char *remote = starts_with(atom->name, "push") ?
 +		const char *remote = atom->u.remote_ref.push ?
  			pushremote_for_branch(branch, &explicit) :
  			remote_for_branch(branch, &explicit);
  		if (explicit)
 @@ -1377,14 +1382,14 @@ static void populate_value(struct ref_array_item *ref)
  			if (refname)
  				fill_remote_ref_details(atom, refname, branch, &v->s);
  			continue;
 -		} else if (starts_with(name, "push")) {
 +		} else if (atom->u.remote_ref.push) {
  			const char *branch_name;
  			if (!skip_prefix(ref->refname, "refs/heads/",
  					 &branch_name))
  				continue;
  			branch = branch_get(branch_name);
  
 -			if (starts_with(name, "push:remote-"))
 +			if (atom->u.remote_ref.push_remote)
  				refname = NULL;
  			else {
  				refname = branch_get_push(branch, NULL);
 diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
 index edc73dd79aa..d9eb2be0256 100755
 --- a/t/t6300-for-each-ref.sh
 +++ b/t/t6300-for-each-ref.sh
 @@ -675,7 +675,7 @@ test_expect_success 'Verify usage of %(symref:rstrip) atom' '
  	test_cmp expected actual
  '
  
 -test_expect_success ':remote-name and :remote-ref' '
 +test_expect_success ':remotename and :remoteref' '
  	git init remote-tests &&
  	(
  		cd remote-tests &&
 @@ -687,11 +687,11 @@ test_expect_success ':remote-name and :remote-ref' '
  		git config remote.to.push "refs/heads/*:refs/heads/pushed/*" &&
  		git config branch.master.pushRemote to &&
  		for pair in "%(upstream)=refs/remotes/from/stable" \
 -			"%(upstream:remote-name)=from" \
 -			"%(upstream:remote-ref)=refs/heads/stable" \
 +			"%(upstream:remotename)=from" \
 +			"%(upstream:remoteref)=refs/heads/stable" \
  			"%(push)=refs/remotes/to/pushed/master" \
 -			"%(push:remote-name)=to" \
 -			"%(push:remote-ref)=refs/heads/pushed/master"
 +			"%(push:remotename)=to" \
 +			"%(push:remoteref)=refs/heads/pushed/master"
  		do
  			echo "${pair#*=}" >expect &&
  			git for-each-ref --format="${pair%=*}" \
 @@ -701,7 +701,7 @@ test_expect_success ':remote-name and :remote-ref' '
  		git branch push-simple &&
  		git config branch.push-simple.pushRemote from &&
  		actual="$(git for-each-ref \
 -			--format="%(push:remote-name),%(push:remote-ref)" \
 +			--format="%(push:remotename),%(push:remoteref)" \
  			refs/heads/push-simple)" &&
  		test from, = "$actual"
  	)