PoC: Optimized by OpenCode

[cometkim]

https://opencode.ai/s/Stq2TzIy

[changeset-bot]

⚠️ No Changeset found

Latest commit: 9dc8e80

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[codspeed-hq]

CodSpeed Performance Report

Merging #93 will improve performances by 28.55%

_{Comparing claude-4-opus (9dc8e80) with main (b351f2a)}

Summary

⚡ 3 improvements
✅ 3 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	grapheme - Code snippet (combined)	239 µs	210.1 µs	+13.76%
⚡	grapheme - Hindi	86.8 µs	67.6 µs	+28.55%
⚡	grapheme - Tweet text (combined)	120.4 µs	103.4 µs	+16.48%

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (b351f2a) to head (9dc8e80).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #93   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        10           
  Lines          900       922   +22     
=========================================
+ Hits           900       922   +22     

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[cometkim]

Slightly better than open models,

• Qwen3 Coder: https://opencode.ai/s/aUezjVvJ
• GLM 4.5: https://opencode.ai/s/32VBpU1n

But still not working for optimization tasks, even with live benchmarks

[cometkim]

Claude Opus 4.1 has just dropped

https://opencode.ai/s/nd6x7ZD9

[cometkim]

Horizon Beta: https://opencode.ai/s/Lkry3w28

Think removing all comments is a perf improvement

[cometkim]

GPT OSS 120B: https://opencode.ai/s/5HnW18a4

[cometkim]

Btw, using a precomputed lookup table for the BMP range is an interesting idea. It can potentially improve the perf for most cases.