Txt Regex

Quality score: 70/100 · Category: Engineering · Sub-category: devops

Choose between Swift Regex and NSRegularExpression for text parsing, and bridge match results to NSRange for use with NSAttributedString and TextKit. Covers regex literals, RegexBuilder DSL, runtime-constructed regexes, AnyRegexOutput, Foundation parser captures (date, currency, localizedInteger), NSRegularExpression patterns and options, NSTextCheckingResult, the NSRange(_:in:) bridge, syntax-highlighting patterns, and the performance and deployment-target tradeoffs that decide which engine to use. Use when picking a regex API for new code, migrating existing NSRegularExpression code to Swift Regex, wiring matches into syntax highlighting or attribute application in NSTextStorage, or debugging "the match is in the wrong place" bugs caused by NSRange/String.Index mismatch. Do NOT use for NLTagger, NLTokenizer, NSDataDetector, or general Natural Language utilities — see txt-detectors-tagger. Do NOT use for Markdown parsing or PresentationIntent — see txt-markdown.

What this skill does

Txt Regex is a production-ready Claude Code skill (quality score 70/100) in the devops sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/txt-regex/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when picking a regex API for new code, migrating existing NSRegularExpression code to Swift Regex, wiring matches into syntax highlighting or attribute application in NSTextStorage, or debugging "the match is in the wrong place" bugs caused by NSRange/String.Index mismatch.

Who uses this skill

The Txt Regex skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/txt-regex
curl -L https://claudskills.com/skills/txt-regex/SKILL.md \
  -o ~/.claude/skills/txt-regex/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/txt-regex/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/txt-regex/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\txt-regex\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these top-rated picks from the same category:

Browse all Engineering skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Code skills. · What's New · Install guide · About · llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: GifPerfect · AspectPerfect · SlomoPerfect · Ucaption · UTagger · AutoXPoster · TestYourSkills