Description

Deleting a selection that ends inside a table which is not a top-level block also deletes content outside the selection. That covers a table inside a list item or a quote, and any edit that replaces the selection: Backspace, typing over it or Cut.

Every top-level block after the block where the selection starts is deleted, up to the end of the document. When the table is inside a quote after that block, the quote holding the table is deleted too. The editor then throws Cannot destructure property 'path' of 'this.parent' as it is null. and no longer shows what is saved.

Steps to Reproduce

1. Open a document with:

   - a
   
     | t |
     | --- |
     | 1 |
   
   after
   
   more
   
   # heading

2. Click right after a.
3. Press Shift+↓ twice. The selection now ends at the start of the cell 1.
4. Press Backspace.

after, more and # heading disappear from the editor and from the saved document.

Variant with the table in a quote: use the steps above with

- a

> | t |
> | --- |
> | 1 |

after

An "Unexpected error" appears, and the quote and after are gone.

Expected Behavior

Only the selection is removed. Everything after it stays: after, more, # heading, and the quote holding the table.

Actual Behavior

Measured with real mouse and keyboard input, using Playwright _electron, in MarkText 0.20.0-rc.2 on macOS and in a desktop build of develop @ 0e156b0. Both give the same result:

The emptied cells keep showing their text (#5398), and - b in the second row is kept although it was selected (#5399).

Screenshots / Logs

Analysis: removeBlocks() in packages/muya/src/clipboard/cut.ts hands a selection that ends in a table to removeBlocksIntoTable(). That function removes "every outmost block strictly between before's outmost block and the table" by walking before.outMostBlock.next until it reaches the table.

A table inside a list item or a quote is never one of those top-level blocks, so the walk never stops. It removes every block after the start's outermost block, including a quote that holds the table. The cells of that now detached table are then emptied, and get path throws:

TypeError: Cannot destructure property 'path' of 'this.parent' as it is null.
    at get path
    at set text
    at emptyCellContentsUntil
    at removeBlocksIntoTable
    at removeBlocks

Operating System

macOS

MarkText Version

0.20.0-rc.2, develop @ 0e156b0

OS Version

macOS 27.0

Reproducibility

• I can reliably reproduce this issue