编写TCL脚本以匹配两个关键字之间的所有内容
例：
X509v3 Extended Key Usage: 1.2.3.4,1.3.6.1.4.1.311.4,1.1.1.1,234.432.1.36.4564.345 55.55.55.55,66.66.66.66,1234.5443.123.321.12.332.231.1 X509v3 Subject Key Identifier:
1.2.3.4,1234.5443.123.321.12.332.231.1
我没有成功的尝试：
set content [regexp {(?=<Extended Key Usage)(?s)(.*)(?=X509)} $ext match]
.
set content [regexp {\y(Extended Key Usage)(.*)(X509)\y} $ext match]
解决方法
regexp -linestop {Extended Key Usage:\s.*[\r\n]+((?:.|[\r\n])*?)(?=\s*X509v3 Subject Key Identifier:)} $subject regexmatch result
试试这个.结果在捕获组1中捕获.TCL ARE http://wiki.tcl.tk/461不支持Lookbehind
