Fixes #319

web/editor.tsx

@@ -149,7 +149,6 @@ export class Editor {
 
   // Runtime state (that doesn't make sense in viewState)
   collabState?: CollabState;
-  // enableVimMode = false;
 
   constructor(
     space: Space,
@@ -332,6 +331,7 @@ export class Editor {
       }
     });
 
+    // Need to find a nicer way of doing this stuff
     if (this.builtinSettings.fontFamily) {
       document.getElementById("sb-root")!.setAttribute(
         "style",
@@ -1067,6 +1067,7 @@ export class Editor {
 
     useEffect(() => {
       this.rebuildEditorState();
+      this.dispatchAppEvent("editor:modeswitch");
     }, [viewState.uiOptions.vimMode]);
 
     useEffect(() => {

web/syscalls/editor.ts

@@ -1,5 +1,5 @@
 import { Editor } from "../editor.tsx";
-import { EditorView, Transaction } from "../deps.ts";
+import { EditorView, Transaction, Vim, vimGetCm } from "../deps.ts";
 import { SysCallMapping } from "../../plugos/system.ts";
 import { FilterOption } from "../../common/types.ts";
 
@@ -164,6 +164,10 @@ export function editorSyscalls(editor: Editor): SysCallMapping {
         value,
       });
     },
+    "editor.vimEx": (_ctx, exCommand: string) => {
+      const cm = vimGetCm(editor.editorView!)!;
+      return Vim.handleEx(cm, exCommand);
+    },
   };
 
   return syscalls;