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ClaudSkills / Engineering / devops

Txt Regex

Category: Engineering  ·  Sub-category: devops  ·  Last updated:
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.

About this skill (catalog notes)

Txt Regex includes pricing or quota commentary; 8 code blocks for direct copy-paste. At roughly 1,520 words the SKILL.md is on the longer end of the catalog distribution.

License
MIT
Indexed lastmod
Catalog position
Engineering · devops
Indexed related skills
10

How Txt Regex fits the catalog

Txt Regex sits in the Engineering category under the devops sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Authored against iOS 26.x / Swift 6.x / Xcode 26.x.

What this skill does

Txt Regex is a community-contributed Claude Code skill 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 Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

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.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Txt Regex Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/txt-regex/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Txt Regex skill do?
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.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Txt Regex skill?
Use Txt Regex when your Claude Code task falls under the Engineering category — specifically in the devops area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Txt Regex" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Txt Regex skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Txt Regex is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
ClaudSkills. (2026). Txt Regex [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/txt-regex/
BibTeX
@misc{txt-regex-2026,
  author    = {ClaudSkills},
  title     = {Txt Regex [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/txt-regex/}
}

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