From: Jacob Keller <jacob.kel...@gmail.com>

Extend name-rev further to support matching refs by adding `--discard`
patterns. These patterns will limit the scope of refs by discarding any
ref that matches at least one discard pattern. Checking the discard refs
shall happen first, before checking the include --refs patterns. This
will allow more flexibility to matching certain kinds of references.

Add tests and update Documentation for this change.

Signed-off-by: Jacob Keller <jacob.kel...@gmail.com>
---
 Documentation/git-name-rev.txt |  7 +++++++
 builtin/name-rev.c             | 14 +++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 7433627db12d..9b46e5ea9aae 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt
@@ -30,6 +30,13 @@ OPTIONS
        given multiple times, use refs whose names match any of the given shell
        patterns. Use `--no-refs` to clear any previous ref patterns given.
 
+--discard=<pattern>::
+       Do not use any ref whose name matches a given shell pattern. The
+       pattern can be one of branch name, tag name or fully qualified ref
+       name. If given multiple times, discard refs that match any of the given
+       shell patterns. Use `--no-discards` to clear the list of discard
+       patterns.
+
 --all::
        List all commits reachable from all refs
 
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 000a2a700ed3..86479c17a7c9 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -109,6 +109,7 @@ struct name_ref_data {
        int tags_only;
        int name_only;
        struct string_list ref_filters;
+       struct string_list discard_filters;
 };
 
 static struct tip_table {
@@ -150,6 +151,15 @@ static int name_ref(const char *path, const struct 
object_id *oid, int flags, vo
        if (data->tags_only && !starts_with(path, "refs/tags/"))
                return 0;
 
+       if (data->discard_filters.nr) {
+               struct string_list_item *item;
+
+               for_each_string_list_item(item, &data->discard_filters) {
+                       if (subpath_matches(path, item->string) >= 0)
+                               return 0;
+               }
+       }
+
        if (data->ref_filters.nr) {
                struct string_list_item *item;
                int matched = 0;
@@ -323,12 +333,14 @@ int cmd_name_rev(int argc, const char **argv, const char 
*prefix)
 {
        struct object_array revs = OBJECT_ARRAY_INIT;
        int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, 
peel_tag = 0;
-       struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP };
+       struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, 
STRING_LIST_INIT_NODUP };
        struct option opts[] = {
                OPT_BOOL(0, "name-only", &data.name_only, N_("print only names 
(no SHA-1)")),
                OPT_BOOL(0, "tags", &data.tags_only, N_("only use tags to name 
the commits")),
                OPT_STRING_LIST(0, "refs", &data.ref_filters, N_("pattern"),
                                   N_("only use refs matching <pattern>")),
+               OPT_STRING_LIST(0, "discard", &data.discard_filters, 
N_("pattern"),
+                                  N_("ignore refs matching <pattern>")),
                OPT_GROUP(""),
                OPT_BOOL(0, "all", &all, N_("list all commits reachable from 
all refs")),
                OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
-- 
2.11.0.rc2.152.g4d04e67

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