Markdown link automd must move selection after inserted link

Problem

Markdown link completion inserted the right link node but left selection in the wrong place.

The visible repro was /blocks/link-demo: finish the link with ) and the caret stays before the link instead of after it.

Root cause

LinkRules.markdown inserted the link at the matched range, but unlike bare URL autolink it never ran the shared post-insert selection handoff.

So the transform stopped after upsertLink(...), leaving the collapsed selection in the leading empty text node.

Solution

Make markdown link completion use the same post-insert selection move as the other autolink flows:

const inserted = upsertLink(context.editor, {
  insertNodesOptions: {
    at: match.range,
    select: true,
  },
  skipValidation: true,
  text: match.text,
  url: match.url,
});

if (inserted) {
  moveSelectionAfterLink(context.editor);
  return true;
}

File:

• LinkRules.ts

Why This Works

moveSelectionAfterLink(...) already knew how to place the caret in the text node after a completed link.

The markdown rule simply never called it. Once it does, markdown-link completion matches the expected editing flow:

• insert link node
• move selection after link
• keep typing normally

Prevention

• When two insertion paths create the same node shape, compare their selection handoff too, not just the inserted structure.
• For autoformat-like transforms, add one test for the final caret position.

Verification

bun test packages/link/src/lib/internal/inputRules.spec.tsx
bun test packages/link/src/lib/withLink.spec.tsx
bun test ./apps/www/src/__tests__/package-integration/link/link-automd.slow.tsx
bun test ./apps/www/src/__tests__/package-integration/playground/playground-rules.slow.tsx

Browser proof:

• http://localhost:3001/blocks/link-demo
• reset to a paragraph containing [link](http://google.com
• type )
• selection lands at [0, 2], offset 0, after the inserted link