[PATCH RFC 03/20] ref-filter: add rest formatting option

[Olga Telezhnaya <olyatelezhnaya@gmail.com>]

Add rest option that allows to add string into ref_array_item
and then put it into specific place of the output.
We are using it now in cat-file command: user could put anything
in the input after objectname, and it will appear in the output
in place of %(rest).

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com>
---
 ref-filter.c | 4 ++++
 ref-filter.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/ref-filter.c b/ref-filter.c
index 736e1f9cc38fc..46bf89b3330de 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -485,6 +485,7 @@ static struct {
 	{ "if", SOURCE_NONE, FIELD_STR, if_atom_parser },
 	{ "then", SOURCE_NONE },
 	{ "else", SOURCE_NONE },
+	{ "rest", SOURCE_NONE },
 };
 
 #define REF_FORMATTING_STATE_INIT  { 0, NULL }
@@ -1623,6 +1624,9 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
 			else
 				v->s = xstrdup(" ");
 			continue;
+		} else if (starts_with(name, "rest")) {
+			v->s = xstrdup(ref->request_rest ? ref->request_rest : "");
+			continue;
 		} else if (starts_with(name, "align")) {
 			v->handler = align_atom_handler;
 			v->s = xstrdup("");
diff --git a/ref-filter.h b/ref-filter.h
index 4d7d36e9f522d..aaeda9f324f5c 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -40,6 +40,7 @@ struct ref_array_item {
 	const char *symref;
 	struct commit *commit;
 	struct atom_value *value;
+	const char *request_rest;
 	char refname[FLEX_ARRAY];
 };
 

--
https://github.com/git/git/pull/568