Table of Contents does not update correctly when using Paragraph menu to manage headers

[againey]

Description

Table of contents does not strip # hash symbols correctly when using the heading-related actions in the Paragraph menu. This includes Promote Heading, Demote Heading, and the 6 items to create a heading at various levels.

• Can you reproduce the issue?

Steps to reproduce

1. Create a new document.
2. Show the Table of Contents in the side bar.
3. In the new document, create a heading by typing # Heading.
4. Observe that the ToC shows Heading.
5. With the cursor on the same line as this heading, select the menu item Paragraph > Demote Heading or use the shortcut Ctrl+Minus.

Alternatively:

3. Select the menu item Paragraph > Heading 2 or use the shortcut Ctrl+2 and then type Heading.

Expected behavior:

The Table of Contents shows just the text Heading.

Actual behavior:

The Table of Contents shows the text ## Heading, failing to trim the leading hash characters.

Saving the file and viewing it in plaintext editor shows that the underlying content is fine. Closing and reopening it in Mark Text rebuilds the Table of Contents correctly.

Versions

• MarkText version: v0.16.3
• Operating system: Windows 11 Home 21H2