repeat charactar

packages/codemirror/codemirror.mjs

@@ -11,6 +11,7 @@ import {
   keymap,
   lineNumbers,
 } from '@codemirror/view';
+import {repeatCharKeymap} from './repeatcharacter.mjs';
 import { persistentAtom } from '@nanostores/persistent';
 import { logger, registerControl, repl } from '@strudel/core';
 import { cleanupDraw, cleanupDrawContext, Drawer } from '@strudel/draw';
@@ -111,6 +112,7 @@ export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, roo
       syntaxHighlighting(defaultHighlightStyle),
       EditorView.updateListener.of((v) => onChange(v)),
       drawSelection({ cursorBlinkRate: 0 }),
+      repeatCharKeymap,
       Prec.highest(
         keymap.of([
           {
@@ -215,7 +217,6 @@ export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, roo
               },
             };
           }),
-
           /* {
             key: 'Ctrl-Shift-.',
             run: () => (onPanic ? onPanic() : onStop?.()),

packages/codemirror/repeatcharacter.mjs

@@ -0,0 +1,55 @@
+import { Compartment } from "@codemirror/state";
+import { keymap } from "@codemirror/view";
+
+const repeatMode = new Compartment();
+
+function repeatPreviousChar(times) {
+  return ({ state, dispatch }) => {
+    const { from, empty } = state.selection.main;
+    if (!empty || from === 0) return false;
+
+    const prevChar = state.doc.sliceString(from - 1, from);
+    const text = Array(times).fill(prevChar).join(" ");
+
+    dispatch(state.update({
+      changes: {
+        from,
+        insert: " " + text
+      }
+    }));
+
+    return true;
+  };
+}
+
+function exitRepeatMode(view) {
+  view.dispatch({
+    effects: repeatMode.reconfigure([])
+  });
+}
+
+const digitBindings = Array.from({ length: 9 }, (_, i) => ({
+  key: String(i + 1),
+  run(view) {
+    repeatPreviousChar(i + 1)(view);
+    exitRepeatMode(view);
+    return true;
+  }
+}));
+
+export const repeatCharKeymap = [
+    
+  repeatMode.of([]),
+
+  keymap.of([
+    {
+      key: "Alt-r",
+      run(view) {
+        view.dispatch({
+          effects: repeatMode.reconfigure(keymap.of(digitBindings))
+        });
+        return true;
+      }
+    }
+  ])
+];