use more option about chat history

[RexWzh]

No description provided.

[codecov]

Codecov Report

Attention: 50 lines in your changes are missing coverage. Please review.

Comparison is base (d38b9b3) 28.39% compared to head (e3a1123) 19.08%.

Files	Patch %	Lines
askchat/askchat.py	5.66%	50 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
- Coverage   28.39%   19.08%   -9.32%     
==========================================
  Files           3        3              
  Lines          81      131      +50     
==========================================
+ Hits           23       25       +2     
- Misses         58      106      +48     

Flag	Coverage Δ
unittests	19.08% <7.40%> (-9.32%)	⬇️

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