_button-group.scss in bootstrap-5.0.0.beta1

- old
+ new

@@ -41,21 +41,21 @@
   }
 
   // Reset rounded corners
   > .btn:not(:last-child):not(.dropdown-toggle),
   > .btn-group:not(:last-child) > .btn {
-    @include border-right-radius(0);
+    @include border-end-radius(0);
   }
 
   // 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);
+    @include border-start-radius(0);
   }
 }
 
 // Sizing
 //
@@ -73,15 +73,15 @@
   padding-right: $btn-padding-x * .75;
   padding-left: $btn-padding-x * .75;
 
   &::after,
   .dropup &::after,
-  .dropright &::after {
+  .dropend &::after {
     margin-left: 0;
   }
 
-  .dropleft &::before {
+  .dropstart &::before {
     margin-right: 0;
   }
 }
 
 .btn-sm + .dropdown-toggle-split {
@@ -130,10 +130,10 @@
   > .btn:not(:last-child):not(.dropdown-toggle),
   > .btn-group:not(:last-child) > .btn {
     @include border-bottom-radius(0);
   }
 
-  > .btn:not(:first-child),
+  > .btn ~ .btn,
   > .btn-group:not(:first-child) > .btn {
     @include border-top-radius(0);
   }
 }