BMP PUA Unicode Workaround

icon-lookup

Workaround for Claude Code filtering BMP PUA Unicode (U+E000-U+F8FF). Supplementary PUA Nerd Font icons like 󰊤 󱃾 󰁹 (U+F0000+, e.g. nf-md-github, nf-md-kubernetes, nf-md-battery) can be written directly. BMP PUA icons (Powerline, Font Awesome, Devicons) require placeholder syntax like {{ U+E0A0 }} or {{ nf-fa-star }} (without spaces), which hooks auto-convert. Invoke when reading or writing Starship configs, tmux themes, shell prompts, or statuslines.

majiayu000/claude-skill-registry·0installs663starsDevOps & CI/CD

SKILL.md

Full skill instructions

BMP PUA Unicode Workaround

Claude Code filters Unicode characters in the BMP Private Use Area (U+E000-U+F8FF), which includes most Nerd Font icons. This skill provides tools for working with these icons.

Quick Reference

Range	Status	Examples
U+E000-U+F8FF (BMP PUA)	Filtered - use placeholders	Powerline, Devicons, Font Awesome, Octicons
U+F0000+ (Supplementary PUA-A)	Works directly	Material Design Icons (nf-md-*)

Automatic Features

When reading files: A PostToolUse hook automatically identifies all PUA characters, showing icon names, codepoints, and whether they're filtered.

When writing files: A PostToolUse hook automatically converts placeholder syntax to actual Unicode characters.

Placeholder Syntax

When writing icons in the filtered BMP PUA range, use placeholder syntax:

By codepoint: {{ U+E0A0 }} (without the spaces)
By name: {{ nf-fa-star }} (without the spaces)

Icon Lookup

Search for icons by name:

python3 ${CLAUDE_PLUGIN_ROOT}/scripts/lookup-icon.py "<search query>"

Example searches:

git branch → finds git-related icons
folder → finds folder/directory icons
wizard → finds wizard icons

Character Identification

Identify a specific character:

# Direct argument (this is nf-md-battery, a Supplementary PUA icon)
python3 ${CLAUDE_PLUGIN_ROOT}/scripts/identify-icons.py -c "󰁹"

# From stdin
echo "󰁹" | python3 ${CLAUDE_PLUGIN_ROOT}/scripts/identify-icons.py -

Workflow

Reading files - Hook automatically shows icon info; use this to understand what icons are present
Writing icons - Search with lookup script, then use placeholder syntax for filtered icons
Comparing icons - Use identify script to check if two characters are the same icon
Material Design Icons (U+F0000+) can be written directly without placeholders

Manual Conversion

If placeholders weren't converted (e.g., hook didn't run):

${CLAUDE_PLUGIN_ROOT}/scripts/convert-placeholders.py /path/to/file

Install skill

Copy and run in your terminal

npx -y skills add https://github.com/majiayu000/claude-skill-registry --skill icon-lookup

View on GitHub

skills/data/icon-lookup/SKILL.md

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