OpenClaw

regex-patterns

Practical regex patterns across languages and use cases. Use when validating input (email, URL, IP), parsing log lines, extracting data from text, refactoring code with search-and-replace, or debugging why a regex doesn't match.

gitgoodordietrying0 来源安装数☆ 0 仓库 Stars

查看来源 ↗安装与使用 SKILL.md ↗

安装与使用

请根据来源仓库和你的 AI 工具说明安装此技能。先阅读技能文件和依赖要求，再添加到工作流。

SkillHub CLI

skillhub install gitgoodordietrying/regex-patterns

打开来源仓库，查看说明和兼容环境后，按来源提供的命令或步骤安装。

将来源链接提供给你的 Agent，让它先读取说明、核对依赖，并向你说明将执行的安装步骤。

查看来源 ↗使用指南

技能说明

Regex Patterns

Practical regular expression cookbook. Patterns for validation, parsing, extraction, and refactoring across JavaScript, Python, Go, and command-line tools.

When to Use

Validating user input (email, URL, IP, phone, dates)
Parsing log lines or structured text
Extracting data from strings (IDs, numbers, tokens)
Search-and-replace in code (rename variables, update imports)
Filtering lines in files or command output
Debugging regexes that don't match as expected

Quick Reference

Metacharacters

Pattern	Matches	Example
`.`	Any character (except newline)	`a.c` matches `abc`, `a1c`
`\d`	Digit `[0-9]`	`\d{3}` matches `123`
`\w`	Word char `[a-zA-Z0-9_]`	`\w+` matches `hello_123`
`\s`	Whitespace `[ \t\n\r\f]`	`\s+` matches spaces/tabs
`\b`	Word boundary	`\bcat\b` matches `cat` not `scatter`
`^`	Start of line	`^Error` matches line starting with Error
`$`	End of line	`\.js$` matches line ending with .js
`\D`, `\W`, `\S`	Negated: non-digit, non-word, non-space

Quantifiers

Pattern	Meaning
`*`	0 or more (greedy)
`+`	1 or more (greedy)
`?`	0 or 1 (optional)
`{3}`	Exactly 3
`{2,5}`	Between 2 and 5
`{3,}`	3 or more
`*?`, `+?`	Lazy (match as few as possible)

Groups and Alternation

Pattern	Meaning
`(abc)`	Capture group
`(?:abc)`	Non-capturing group
`(?P<name>abc)`	Named group (Python)
`(?<name>abc)`	Named group (JS/Go)
`a\|b`	Alternation (a or b)
`[abc]`	Character class (a, b, or c)
`[^abc]`	Negated class (not a, b, or c)
`[a-z]`	Range

Lookahead and Lookbehind

Pattern	Meaning
`(?=abc)`	Positive lookahead (followed by abc)
`(?!abc)`	Negative lookahead (not followed by abc)
`(?<=abc)`	Positive lookbehind (preceded by abc)
`(?<!abc)`	Negative lookbehind (not preceded by abc)

Validat...

来源信息

Source: github
Repository: openclaw/skills
Path: skills/gitgoodordietrying/regex-patterns
Version: —
Commit: e6547b5c22819839c969cfbd70837c376a36d08a
分类来源: rules
状态: active
可见性: public

这些信息来自收录时的来源分析，可能滞后；使用前请核对最新来源文件。

来源内容

SKILL.md

# Regex Patterns

Practical regular expression cookbook. Patterns for validation, parsing, extraction, and refactoring across JavaScript, Python, Go, and command-line tools.

## When to Use

- Validating user input (email, URL, IP, phone, dates)
- Parsing log lines or structured text
- Extracting data from strings (IDs, numbers, tokens)
- Search-and-replace in code (rename variables, update imports)
- Filtering lines in files or command output
- Debugging regexes that don't match as expected

## Quick Reference

### Metacharacters

| Pattern | Matches | Example |
|---|---|---|
| `.` | Any character (except newline) | `a.c` matches `abc`, `a1c` |
| `\d` | Digit `[0-9]` | `\d{3}` matches `123` |
| `\w` | Word char `[a-zA-Z0-9_]` | `\w+` matches `hello_123` |
| `\s` | Whitespace `[ \t\n\r\f]` | `\s+` matches spaces/tabs |
| `\b` | Word boundary | `\bcat\b` matches `cat` not `scatter` |
| `^` | Start of line | `^Error` matches line starting with Error |
| `$` | End of line | `\.js$` matches line ending with .js |
| `\D`, `\W`, `\S` | Negated: non-digit, non-word, non-space | |

### Quantifiers

| Pattern | Meaning |
|---|---|
| `*` | 0 or more (greedy) |
| `+` | 1 or more (greedy) |
| `?` | 0 or 1 (optional) |
| `{3}` | Exactly 3 |
| `{2,5}` | Between 2 and 5 |
| `{3,}` | 3 or more |
| `*?`, `+?` | Lazy (match as few as possible) |

### Groups and Alternation

| Pattern | Meaning |
|---|---|
| `(abc)` | Capture group |
| `(?:abc)` | Non-capturing group |
| `(?P<name>abc)` | Named group (Python) |
| `(?<name>abc)` | Named group (JS/Go) |
| `a\|b` | Alternation (a or b) |
| `[abc]` | Character class (a, b, or c) |
| `[^abc]` | Negated class (not a, b, or c) |
| `[a-z]` | Range |

### Lookahead and Lookbehind

| Pattern | Meaning |
|---|---|
| `(?=abc)` | Positive lookahead (followed by abc) |
| `(?!abc)` | Negative lookahead (not followed by abc) |
| `(?<=abc)` | Positive lookbehind (preceded by abc) |
| `(?<!abc)` | Negative lookbehind (not preceded by abc) |

## Validat...

搜索