Cannot remove priority in todo.txt under language (中文,中国)

[li-zyang]

⚠️ This issue respects the following points: ⚠️

• This is a bug. Not a question or feature request.
• The topic is not already reported at Issues. (I've searched it).
• Markor is up to date. See Releases for the latest version. Updates are available from F-Droid and GitHub.
• The bug is still present in the latest development version (git master). (Please download and try the test version of Markor, named Marder. Don't worry; Markor and Marder appear as completely separate applications. You can install both side-by-side, and Markor settings are not touched. In case the issue is resolved there, you don't need to create a bug report. The change will be part of the next Markor update.)

Description

In todo.txt, when I remove the priority tag of a task using priority selector, it is replaced by (无) instead of being removed. Under other language including similar language (中文,臺灣) and (日本語) the whole tag is removed. If I change the priority tag from (无) to (A), the program adds a new tag.

SVID_20251201_183740_1.mp4

Steps to reproduce

1. Change language setting to "Chinese (中文,中国)" / "Chinese Simplified (中文,中国)"
2. Write arbitrary task in todo.txt
3. Add a priority
4. Remove that priority

Information

Android version: any
Device: any
App Version: 2.15.2 (161) and 2.15.2-0027 (251112)

Source

GitHub Releases

Format / File type

todo.txt

Additional info / Log

-