Fix: don't reinit all editors on save

edit/sections-editor-section.js

@@ -122,6 +122,7 @@ function createSection({
     getCode,
     getModel,
     remove,
+    destroy,
     restore,
     isRemoved: () => removed,
     onChange,
@@ -271,14 +272,15 @@ function createSection({
     return cm.getValue();
   }
 
-  function remove(destroy = false) {
+  function remove() {
     linter.disableForEditor(cm);
     el.classList.add('removed');
     removed = true;
     appliesTo.forEach(a => a.remove());
-    if (destroy) {
-      cmFactory.destroy(cm);
-    }
+  }
+
+  function destroy() {
+    cmFactory.destroy(cm);
   }
 
   function restore() {

edit/sections-editor.js

@@ -406,11 +406,24 @@ function createSectionsEditor(style) {
     }
     API.editSave(newStyle)
       .then(newStyle => {
+        destroyRemovedSections();
         sessionStorage.justEditedStyleId = newStyle.id;
-        replaceStyle(newStyle);
+        replaceStyle(newStyle, false);
       });
   }
 
+  function destroyRemovedSections() {
+    for (let i = 0; i < sections.length;) {
+      if (!sections[i].isRemoved()) {
+        i++;
+        continue;
+      }
+      sections[i].destroy();
+      sections[i].el.remove();
+      sections.splice(i, 1);
+    }
+  }
+
   function updateHeader() {
     nameEl.value = style.name || '';
     enabledEl.checked = style.enabled !== false;
@@ -476,7 +489,8 @@ function createSectionsEditor(style) {
       const index = sections.indexOf(section);
       sections.splice(index, 1);
       section.el.remove();
-      section.remove(true);
+      section.remove();
+      section.destroy();
     } else {
       const lines = [];
       const MAX_LINES = 10;
@@ -486,7 +500,7 @@ function createSectionsEditor(style) {
                    lines.slice(0, MAX_LINES).map(s => clipString(s, 100)).join('\n') +
                    (lines.length > MAX_LINES ? '\n...' : '');
       $('.deleted-section', section.el).title = title;
-      section.remove(false);
+      section.remove();
     }
     dirty.remove(section, section);
     updateSectionOrder();