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6/30/2026
I cataloged 93 CJK and Unicode bugs in open source. Most are the same five mistakes.

I cataloged 93 CJK and Unicode bugs in open source. Most are the same five mistakes.

Short summary

Author documented 93 bugs across 87 open-source libraries, finding they cluster into 5 patterns in CJK/Unicode text handling. The dominant issue (36 cases) is IME composition: Enter keys firing mid-word before users confirm CJK character selection. The post provides real PR links, code fixes, and actionable debugging steps for developers auditing text inputs.

  • •93 real bugs across 87 libraries cluster into 5 patterns in CJK/Unicode text handling
  • •IME composition dominates (36 cases): Enter fires before CJK character confirmation, silently corrupting data
  • •Includes code fixes, PR links, and grep/manual audit steps for developers to find similar bugs in their own codebases

Generated with AI, which can make mistakes.

#open-source
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