init

content/util/regex.md

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++++
+date = '2025-08-10T12:37:16Z'
+title = '正则'
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+
+## 原子组
+
+不回溯
+
+```regex
+(?>...)
+```
+
+## 占有量词
+
+不回溯
+
+```regex
+.*+
+.++
+.?+
+```
+
+## 详细模式（Verbose Mode / Free-Spacing Mode）
+
+```python
+regex_verbose = r"""
+    ^                   # 匹配字符串开头
+    (\d{4})             # 捕获四位数的年份
+    -                   # 匹配连字符
+    (\d{2})             # 捕获两位数的月份
+    -                   # 匹配连字符
+    (\d{2})             # 捕获两位数的日期
+    $                   # 匹配字符串结尾
+"""
+
+date_string = "2023-10-26"
+match = re.match(regex_verbose, date_string, re.VERBOSE)
+```