Custom rule with regex boundary does not work

[wdjunaidi]

Describe the bug
Custom rule for matching note title with boundary doesn't apply the icon. The custom rule is ^\d{4}-\d{2}-\d{2}$, where it should matches note with that exact format only.

When I try without boundary, e.g. \d{4}-\d{2}\-d{2}, the icon is shown on the notes but it also shown for other notes that have that format in them, such as Screenshot 2024-09-01 at 11:00:00.png

To Reproduce
Steps to reproduce the behavior:

1. Have 2 notes with 2 the following titles 2024-09-01 and Screenshot 2024-09-01
2. Create custom icon rule with ^\d{4}-\d{2}-\d{2}$ rule and pick an icon
3. The icon does not show

Expected behavior
The icon is shown for 2024-09-01 note only, and not shown for Screenshot 2024-09-01.

[wdjunaidi]

Found the solution, I should use word boundary instead of string boundary.

Using the following regex works: \b\d{4}-\d{2}-\d{2}(?:\.\w+)?\b