Type Editor

---

Type Editor / @type-editor/commands / split-block-keep-marks / splitBlockKeepMarks

Variable: splitBlockKeepMarks

const splitBlockKeepMarks: Command;

Defined in: split-block-keep-marks.ts:42

Splits a block while preserving active marks.

This command works exactly like splitBlock, but it preserves the active marks at the cursor position when creating the new block. This is essential for maintaining formatting context when splitting blocks during typing.

Mark Preservation Logic:

• Uses stored marks if they exist (e.g., after toggling a mark without typing)
• Otherwise, uses the marks at the cursor position (if not at the start of the parent)
• Ensures these marks are applied to the new block

This behavior is typically desired for Enter key handling in rich text editors, where users expect formatting to continue into the next paragraph.

Param

The current editor state

Param

Optional dispatch function to execute the transaction

Returns

true if the split was performed, false otherwise

Example

// Use for Enter key to maintain formatting
const keymap = {
  Enter: chainCommands(
    newlineInCode,
    exitCode,
    liftEmptyBlock,
    splitBlockKeepMarks,
  ),
};

// Compare behaviors:
// splitBlock: **bold text**|  → Press Enter → **bold text**\n|
// splitBlockKeepMarks: **bold text**|  → Press Enter → **bold text**\n**|**