如何编写正则表达式匹配每段set private-key至加密私钥结束的完整内容

我需要编写正则表达式，从给定文本中匹配出3段同时包含set private-key和-----END ENCRYPTED PRIVATE KEY-----"的内容，且需包含这两行本身。我已有匹配起始行的表达式^.*set private-key.*$和匹配结束行的表达式^-----END ENCRYPTED PRIVATE KEY-----"$，但合并为^.*set private-key.*$[\s\S]*^-----END ENCRYPTED PRIVATE KEY-----"$时，会选中第一个起始行到最后一个结束行之间的所有内容，无法单独匹配每一段，特此求助。

示例文本 #

set comments "This is a comment "
    set private-key "-----BEGIN ENCRYPTED PRIVATE KEY-----\nMIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIpQqr96DiyZICAggA\nMIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIpQqr96DiyZICAggA\nMIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIpQqr96DiyZICAggA\n-----END ENCRYPTED PRIVATE KEY-----"\n\n        set range global\n        set source factory\n        set last-updated 1546857127\n    next\n    edit "nothing important"\n        set password ENC b1yM5KXgCoMcQ5Nc8zXW4RUgQe2XnxnVw3JDavLkx7L/dMwEudi2CuZDVEnqaoP/K3oKQb7r0WMwblzPu3sBzJkrSP28WQ==\n        set comments "This is another comment"\n        set private-key "-----BEGIN ENCRYPTED PRIVATE KEY-----\nJzW9TfmKu1lfYq/edslhke7RVPRpJ/Xu+Asbwd/P1qn/ffGbv713Xtyy95zBQbRe\n8u1I3cGvr8LMHsMOdgFuHMr0OcVp7B9amCKQeXQImXK1SXHnZjPuIw7IYBlX1jvN\nMIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIpQqr96DiyZICAggA\n-----END ENCRYPTED PRIVATE KEY-----"\n    next\n    edit "nothing important"\n        set password ENC b1yM5KXgCoMcQ5Nc8zXW4RUgQe2XnxnVw3JDavLkx7L/dMwEudi2CuZDVEnqaoP/K3oKQb7r0WMwblzPu3sBzJkrSP28WQ==\n        set comments "This is another comment"\n        set private-key "-----BEGIN ENCRYPTED PRIVATE KEY-----\nJzW9TfmKu1lfYq/edslhke7RVPRpJ/Xu+Asbwd/P1qn/ffGbv713Xtyy95zBQbRe\n8u1I3cGvr8LMHsMOdgFuHMr0OcVp7B9amCKQeXQImXK1SXHnZjPuIw7IYBlX1jvN\nMIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIpQqr96DiyZICAggA\n-----END ENCRYPTED PRIVATE KEY-----"\n    edit "nothing important"\n        set password ENC b1yM5KXgCoMcQ5Nc8zXW4RUgQe2XnxnVw3JDavLkx7L/dMwEudi2CuZDVEnqaoP/K3oKQb7r0WMwblzPu3sBzJkrSP28WQ==\n        set private-key "-----BEGIN OPENSSH PRIVATE KEY-----\nb3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDyqjjtjF\nb3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDyqjjtjF\nb3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDyqjjtjF\nXUq7T96YiMJWNG4w==\n-----END OPENSSH PRIVATE KEY-----\n"\n\n```

## 解决方案
### 修正后的正则表达式
```regex
^.*set private-key.*$[\s\S]*?^-----END ENCRYPTED PRIVATE KEY-----"$

需配合**多行模式（Multiline Mode，标记为m）**使用，不同场景的开启方式：

• JavaScript：/^.*set private-key.*$[\s\S]*?^-----END ENCRYPTED PRIVATE KEY-----"$/gm
• Python：re.findall(r'^.*set private-key.*$[\s\S]*?^-----END ENCRYPTED PRIVATE KEY-----"$', text, re.MULTILINE)
• 在线正则工具：直接勾选"多行模式"选项

原理说明 #

• 原表达式中的[\s\S]*是贪婪匹配规则，会尽可能覆盖更多内容，导致从第一个起始行直接匹配到最后一个结束行。
• 改为[\s\S]*?后切换为非贪婪匹配，会在遇到第一个符合条件的结束行时停止匹配，实现逐段提取目标内容。
• 多行模式的作用是让^和$能够匹配每行的首尾，而非整个文本的首尾，确保起始行和结束行的匹配精度。

内容的提问来源于stack exchange，提问作者Dan Sherwin