From d9e943a88df1ab8f1fcb64c9430da0b44d674e67 Mon Sep 17 00:00:00 2001
From: Robbert van der Helm <mail@robbertvanderhelm.nl>
Date: Wed, 16 Mar 2022 22:00:31 +0100
Subject: [PATCH] Filter out the root group

---
 src/wrapper/vst3/param_units.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/wrapper/vst3/param_units.rs b/src/wrapper/vst3/param_units.rs
index 99796239..38564190 100644
--- a/src/wrapper/vst3/param_units.rs
+++ b/src/wrapper/vst3/param_units.rs
@@ -54,7 +54,14 @@ impl ParamUnits {
         let unique_group_names: HashSet<&str> = groups
             .clone()
             .into_iter()
-            .map(|(_, group_name)| group_name)
+            .filter_map(|(_, group_name)| {
+                // The root should not be included here since that's a special case in VST3
+                if !group_name.is_empty() {
+                    Some(group_name)
+                } else {
+                    None
+                }
+            })
             .collect();
         let mut groups_units: Vec<(&str, ParamUnit)> = unique_group_names
             .into_iter()