From aa38ccf0e1123cb91b63b2bded2ad6a4995b9f28 Mon Sep 17 00:00:00 2001
From: Mattias Wadman <mattias.wadman@gmail.com>
Date: Tue, 28 Sep 2021 13:08:22 +0200
Subject: [PATCH] format,interp: Use MustGroup and add probe order test

---
 format/all/all.fqtest | 21 +++++++++++++++++++++
 pkg/interp/funcs.go   |  4 ++--
 2 files changed, 23 insertions(+), 2 deletions(-)
 create mode 100644 format/all/all.fqtest

diff --git a/format/all/all.fqtest b/format/all/all.fqtest
new file mode 100644
index 0000000000..1036afc765
--- /dev/null
+++ b/format/all/all.fqtest
@@ -0,0 +1,21 @@
+$ fq -n _registry.groups.probe
+[
+  "adts",
+  "bzip2",
+  "elf",
+  "flac",
+  "gif",
+  "gzip",
+  "jpeg",
+  "matroska",
+  "mp4",
+  "ogg",
+  "png",
+  "tar",
+  "tiff",
+  "webp",
+  "mpeg_ts",
+  "wav",
+  "mp3",
+  "json"
+]
diff --git a/pkg/interp/funcs.go b/pkg/interp/funcs.go
index 12b042208c..dd0c3815c9 100644
--- a/pkg/interp/funcs.go
+++ b/pkg/interp/funcs.go
@@ -395,10 +395,10 @@ func (i *Interp) _registry(c interface{}, a []interface{}) interface{} {
 	groups := map[string]interface{}{}
 	formats := map[string]interface{}{}
 
-	for fsName, fs := range i.registry.Groups {
+	for fsName := range i.registry.Groups {
 		var group []interface{}
 
-		for _, f := range fs {
+		for _, f := range i.registry.MustGroup(fsName) {
 			group = append(group, f.Name)
 			if _, ok := uniqueFormats[f.Name]; ok {
 				continue