Update codeit.js

Author: benhatsor

lib/codeit.js

@@ -582,49 +582,57 @@ class CodeitElement extends HTMLElement {
         event.preventDefault();
 
         if (event.shiftKey) {
-
-          // delete a tab from selection
-
-          // get caret pos in text
-          const pos = cd.getSelection();
-
-          let startPos = Math.min(pos.start, pos.end);
-          let endPos = Math.max(pos.start, pos.end);
 
-          // get text before cursor
-          
-          cd.setSelection(endPos);
-          
-          const before = cd.beforeCursor();
-
-          // get padding of line
-          let [linePadding, lineStartPos] = getPadding(before);
+          // get current selection
+          const s = window.getSelection();
 
-          // if line has tabs
-          if (linePadding.length > 0) {
-
-            // delete a tab
+          // if selection is collapsed
+          if (s.isCollapsed) {
 
-            const tabLength = cd.options.tab.length;
-
-            cd.setSelection(lineStartPos, lineStartPos + tabLength);
-
-            cd.deleteCurrentSelection();
+            // delete a tab from selection
+  
+            // get caret pos in text
+            const pos = cd.getSelection();
+  
+            let startPos = Math.min(pos.start, pos.end);
+            let endPos = Math.max(pos.start, pos.end);
 
-            // restore pos in text
-            cd.setSelection(lineStartPos + linePadding.length - tabLength, endPos - tabLength);
-
-            const selectedTab = window.getSelection().toString().startsWith(cd.options.tab);
+            // get text before cursor
+            
+            cd.setSelection(endPos);
 
-            if (selectedTab) {
+            const before = cd.beforeCursor();
+  
+            // get padding of line
+            let [linePadding, lineStartPos] = getPadding(before);
+            
+            // if line has tabs
+            if (linePadding.length > 0) {
+  
+              // delete a tab
+              
+              const tabLength = cd.options.tab.length;
+  
+              cd.setSelection(lineStartPos, lineStartPos + tabLength);
+  
+              cd.deleteCurrentSelection();
 
               // restore pos in text
-              cd.setSelection(lineStartPos + linePadding.length, endPos - tabLength);
+              cd.setSelection(lineStartPos + linePadding.length - tabLength, endPos - tabLength);
+  
+              const selectedTab = window.getSelection().toString().startsWith(cd.options.tab);
+              
+              if (selectedTab) {
+                
+                // restore pos in text
+                cd.setSelection(lineStartPos + linePadding.length, endPos - tabLength);
+                
+              }
 
             }
 
           }
-
+  
         } else {
 
           // get current selection