From cff5d8fc6b8bcf69bebd2993e41df62851918fd4 Mon Sep 17 00:00:00 2001
From: Uwe Klotz <uwe.klotz@gmail.com>
Date: Sun, 15 Jan 2023 11:44:25 +0100
Subject: [PATCH] id3v2: Retain frames by predicate

---
 src/id3/v2/tag.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/id3/v2/tag.rs b/src/id3/v2/tag.rs
index d402ae6b..9e3bb5eb 100644
--- a/src/id3/v2/tag.rs
+++ b/src/id3/v2/tag.rs
@@ -190,6 +190,14 @@ impl ID3v2Tag {
 		self.frames.retain(|f| f.id_str() != id)
 	}
 
+	/// Retains [`Frame`]s by evaluating the predicate
+	pub fn retain<P>(&mut self, predicate: P)
+	where
+		P: FnMut(&Frame<'_>) -> bool,
+	{
+		self.frames.retain(predicate)
+	}
+
 	/// Inserts a [`Picture`]
 	///
 	/// According to spec, there can only be one picture of type [`PictureType::Icon`] and [`PictureType::OtherIcon`].