Keep reference of anchor's value

[goccy]

SSIA

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 82.00000% with 18 lines in your changes missing coverage. Please review.

Project coverage is 77.61%. Comparing base (89a6600) to head (2e921a7).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #660      +/-   ##
==========================================
+ Coverage   77.59%   77.61%   +0.01%     
==========================================
  Files          22       22              
  Lines        7843     7858      +15     
==========================================
+ Hits         6086     6099      +13     
- Misses       1345     1346       +1     
- Partials      412      413       +1