Hi, @dr-ramaanand and all, Ah…, OK. So I changed my line of reasoning : Instead of looking for zones which do not contain the string code\x20?{, I’m looking for sections which do contain the string code\x20?{ Then, using the well-known backtracking control verbs (*SKIP)(*F), I omit these cases and look for the string <code, in all the other cases !! Thus, the following regex should solve your problem : (?xs-i) <code (?:(?!</style>).)+? </code> (?:(?!</style>).)+? <style\x20 (?:(?!</style>).)*? code\x20?{ .+? </style> (*SKIP) (*F) | <code Test it against the sample text, below : <code............>............</code> <style type="text/css"> code{ font-family: &quot;verdana&quot;; font-size: 19px; color: black; font-weight: bold !important; line-height: 1 !important; } } </style> <code............>............</code> <style type="text/css"> </style> <code............>............</code> bla blah bla blah bla blah <style type="text/css"> code{ font-family: &quot;verdana&quot;; font-size: 19px; color: black; font-weight: bold !important; line-height: 1 !important; } } </style> <code............>............</code> <style type="text/css"> </style> <code............>............</code> bla blah bla blah bla blah <style type="text/css"></style> <code............>............</code> <style type="text/css"> code { font-family: &quot;verdana&quot;; font-size: 19px; color: black; font-weight: bold !important; line-height: 1 !important; } } </style> bla blah <code............>............</code> A lot of text here, spanning many lines <style type="text/css"> code { font-family: &quot;verdana&quot;; font-size: 19px; color: black; font-weight: bold !important; line-height: 1 !important; } } </style> Some text/codes here <div id="google_translate_element"></div> <script type="text/javascript"> Some javascript here </script> <code............>............</code> A lot of text here, spanning many lines <style type="text/css"> </style> Some text/codes here <div id="google_translate_element"></div> <script type="text/javascript"> Some javascript here </script> BR guy038

@rafaello , IANAL, and I don’t own the trademark, but with your clarifications and updates, I believe you’re probably not violating the trademark (IMO). It’s good to see someone who is willing to accept such feedback (rather than digging in your heels for a while, like happened with the aforementioned fork).

Another example can be seen at https://community.notepad-plus-plus.org/topic/27601/with-the-help-of-a-regex-how-to-find-code-preceded-by-a-only-if-code-is-absent-between-style-and-style-in-the-css-section-which-is-below/4