[cocci] How do I disable formatting for the "+"-side of a rule?

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

How do I stop coccinelle from turning my "{ 0 };\n" into
"{\n\t\t0\n\t};\n"?

I haven't been able to find in the docs how to disable formatting on the
"+"-side of a rule. I have a rule like:
	
	@@
	type T;
	identifier I;
	@@
	- T I;
	+ T I = { 0 };
	... when != \( I \| &I \)
	- memset(&I, 0, ...);

Which produces the expected results as far as the patch is concerned:
	
	diff -u -p a/builtin/for-each-ref.c b/builtin/for-each-ref.c
	--- a/builtin/for-each-ref.c
	+++ b/builtin/for-each-ref.c
	@@ -20,7 +20,9 @@ int cmd_for_each_ref(int argc, const cha
	 	struct ref_sorting *sorting;
	 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
	 	int maxcount = 0, icase = 0;
	-	struct ref_array array;
	+	struct ref_array array = {
	+		0
	+	};
	 	struct ref_filter filter;
	 	struct ref_format format = REF_FORMAT_INIT;
	 	struct strbuf output = STRBUF_INIT;
	@@ -52,7 +54,6 @@ int cmd_for_each_ref(int argc, const cha
	 		OPT_END(),
	 	};
	 
	-	memset(&array, 0, sizeof(array));
	 	memset(&filter, 0, sizeof(filter));
	 
	 	format.format = "%(objectname) %(objecttype)\t%(refname)";
	
But I'd like for that to be e.g.:

	struct ref_array array = { 0 };

Which is a common idiom both in this codebase (git) and elsewhere.

Usually I can find an answer in one of the coccinelle.git's *.cocci
files, the man page, or the grammar PDF, but in this case I've come up
blank...