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Find first non-repeating character with case preservation

100 / 100 · Low risk

Fine to try.

By ECNU-ICALK/AutoSkill (GitHub) · coding · 613 stars · scanned at commit 94c47ca

Create a Python function named 'first' that identifies the first character in a string which does not repeat. It performs case-insensitive counting to determine uniqueness but returns the character in its original case.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'find-first-non-repeating-character-with-case-preservation' ] || [ -L ~/.agents/skills/'find-first-non-repeating-character-with-case-preservation' ]; then echo 'A skill folder named find-first-non-repeating-character-with-case-preservation already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/ECNU-ICALK/AutoSkill' "$d" && git -C "$d" checkout --quiet '94c47ca488d4ba4117d20272e66d49b9877e68cf' -- 'SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/find-first-non-repeating-character-with-case-preservation' && mkdir -p ~/.agents/skills && cp -R "$d"/'SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/find-first-non-repeating-character-with-case-preservation' ~/.agents/skills/'find-first-non-repeating-character-with-case-preservation' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'find-first-non-repeating-character-with-case-preservation' ~/.claude/skills/'find-first-non-repeating-character-with-case-preservation' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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