Regular Expressions 101

Diagnostic-Codethe literal text Diagnostic-Code (case sensitive)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Character Class[\r\n]{2}

{2}matches exactly 2 characters from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

Diagnostic-Code[\s\S]*?[\r\n]{2}

Test String
New

...
Status: 5.0.0
Diagnostic-Code: X-Postfix; skalio.com
*this*
*should*
*be included too*

--EA7634814EFB9.1516804532/mail.example.com
Content-Description: Undelivered Message
...

Regular Expression

Test StringNew

Test String
New