在元素中指定模式时，请注意，要使用正则表达式来执行匹配和字符串替换。
When specifying patterns in the element, realize that regular expressions are used to perform the matching and string replacement.
内置的操作符使得文本搜索、替换和模式匹配轻而易举。
The built-in operators make text searching, replacing, and pattern matching effortless.
即使在这样一小段脚本中，您也可以找到一些参数扩展，包括长度、子字符串、模式匹配和模式替换。
You'll recognize several parameter expansions, including length, substring, pattern matching, and pattern replacement in even this short piece of script.
类似于vi和Emacs的编辑器将模式匹配与替换组合，从而将查找和替换文本组合成一步操作。
Editors such as vi and Emacs combine pattern matching and substitution to find and replace text in one fell swoop.
类似于vi和Emacs的编辑器将模式匹配与替换组合，从而将查找和替换文本组合成一步操作。
Editors such as vi and Emacs combine pattern matching and substitution to find and replace text in one fell swoop.
应用推荐