From 93f1028e82fb66afa5a34f221f51e5620c9cd2c4 Mon Sep 17 00:00:00 2001
From: Martijn Cuppens <martijn.cuppens@gmail.com>
Date: Thu, 4 Jun 2020 16:48:17 +0200
Subject: [PATCH] Clarify removal of border radii

---
 scss/_button-group.scss | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/scss/_button-group.scss b/scss/_button-group.scss
index 8be6c0f52f..b15c6292ed 100644
--- a/scss/_button-group.scss
+++ b/scss/_button-group.scss
@@ -48,11 +48,12 @@
     @include border-right-radius(0);
   }
 
-  // - Target second buttons which are not part of toggle buttons
-  // - Target third or more child
-  // - Target buttons in a button group
-  > :not(.btn-check) + .btn,
+  // The left radius should be 0 if the button is:
+  // - the "third or more" child
+  // - the second child and the previous element isn't `.btn-check` (making it the first child visually)
+  // - part of a btn-group which isn't the first child
   > .btn:nth-child(n + 3),
+  > :not(.btn-check) + .btn,
   > .btn-group:not(:first-child) > .btn {
     @include border-left-radius(0);
   }