Fix handling of btn-group placed inside input-group-btn (used for mixing...

Fix handling of btn-group placed inside input-group-btn (used for mixing dropdowns with normal buttons)

dist/css/bootstrap.css

@@ -3361,8 +3361,10 @@ textarea.input-group-sm > .input-group-btn > .btn {
 .input-group .form-control:first-child,
 .input-group-addon:first-child,
 .input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group > .btn,
 .input-group-btn:first-child > .dropdown-toggle,
-.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle) {
+.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
   border-top-right-radius: 0;
   border-bottom-right-radius: 0;
 }
@@ -3372,8 +3374,10 @@ textarea.input-group-sm > .input-group-btn > .btn {
 .input-group .form-control:last-child,
 .input-group-addon:last-child,
 .input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group > .btn,
 .input-group-btn:last-child > .dropdown-toggle,
-.input-group-btn:first-child > .btn:not(:first-child) {
+.input-group-btn:first-child > .btn:not(:first-child),
+.input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
   border-top-left-radius: 0;
   border-bottom-left-radius: 0;
 }
@@ -3396,10 +3400,12 @@ textarea.input-group-sm > .input-group-btn > .btn {
 .input-group-btn > .btn:active {
   z-index: 2;
 }
-.input-group-btn:first-child > .btn {
+.input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group {
   margin-right: -1px;
 }
-.input-group-btn:last-child > .btn {
+.input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group {
   margin-left: -1px;
 }
 .nav {

less/input-groups.less

@@ -95,8 +95,10 @@
 .input-group .form-control:first-child,
 .input-group-addon:first-child,
 .input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group > .btn,
 .input-group-btn:first-child > .dropdown-toggle,
-.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle) {
+.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
   .border-right-radius(0);
 }
 .input-group-addon:first-child {
@@ -105,8 +107,10 @@
 .input-group .form-control:last-child,
 .input-group-addon:last-child,
 .input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group > .btn,
 .input-group-btn:last-child > .dropdown-toggle,
-.input-group-btn:first-child > .btn:not(:first-child) {
+.input-group-btn:first-child > .btn:not(:first-child),
+.input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
   .border-left-radius(0);
 }
 .input-group-addon:last-child {
@@ -138,10 +142,16 @@
   }
 
   // Negative margin to only have a 1px border between the two
-  &:first-child > .btn {
-    margin-right: -1px;
+  &:first-child {
+    > .btn,
+    > .btn-group {
+      margin-right: -1px;
+    }
   }
-  &:last-child > .btn {
-    margin-left: -1px;
+  &:last-child {
+    > .btn,
+    > .btn-group {
+      margin-left: -1px;
+    }
   }
 }