From f56ade7941df2ffd53ed013a3fca4a3560776b60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Mangano-Tarumi?= <fmang@mg0.fr>
Date: Sun, 28 Oct 2018 19:54:29 -0400
Subject: [PATCH] delete_tags did not delete multiple tags correctly

---
 opustags.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/opustags.c b/opustags.c
index de118dc..6d3ee30 100644
--- a/opustags.c
+++ b/opustags.c
@@ -113,9 +113,13 @@ void delete_tags(opus_tags *tags, const char *field){
     uint32_t i;
     for(i=0; i<tags->count; i++){
         if(match_field(tags->comment[i], tags->lengths[i], field)){
+            // We want to delete the current element, so we move the last tag at position i, then
+            // decrease the array size. We need decrease i to inspect at the next iteration the tag
+            // we just moved.
             tags->count--;
             tags->lengths[i] = tags->lengths[tags->count];
             tags->comment[i] = tags->comment[tags->count];
+            --i;
             // No need to resize the arrays.
         }
     }