From 26e69d50708f2c399b2159d6f8a739a415241cc2 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Wed, 19 Aug 2020 15:35:20 +1000
Subject: [PATCH] ensure tag replacements fully match

https://anki.tenderapp.com/discussions/private/5180-anki-desktop-bug-removing-a-tag-removes-all-substrings
---
 rslib/src/tags.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rslib/src/tags.rs b/rslib/src/tags.rs
index abf3de3f2..f1ef9e306 100644
--- a/rslib/src/tags.rs
+++ b/rslib/src/tags.rs
@@ -135,7 +135,7 @@ impl Collection {
         let tags = split_tags(tags)
             .map(|tag| {
                 let tag = if regex { tag.into() } else { text_to_re(tag) };
-                Regex::new(&format!("(?i){}", tag))
+                Regex::new(&format!("(?i)^{}$", tag))
                     .map_err(|_| AnkiError::invalid_input("invalid regex"))
             })
             .collect::<Result<Vec<Regex>>>()?;