Function emit

packages/computer/src/tools/fs/edit-diff.ts:280–284

(line: string)

      const trailing = nextIsChange;

      const emit = (line: string) => {
        output.push(` ${String(oldLineNum).padStart(w, " ")} ${line}`);
        oldLineNum++;
        newLineNum++;
      };

      if (leading && trailing) {
        if (raw.length <= contextLines * 2) {