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Why One Emoji Breaks Your Coding Agent's TUI Borders: wcwidth vs Grapheme Clusters

Source: DEV Community·
Claude

Summary

A 2025 emoji shifted Claude Code's TUI one cell until a width-table update. How wcwidth, VS16, ZWJ and mode 2027 decide where your agent's borders land.
CategoryAI Tutorials & Practice
TierOrdinary
Published
Indexed by AIQB
SourceDEV Community
AIQB record IDintel-4783e1d4f46d83cd17267787
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