regex101: PCRE (Legacy) Substitution Workspace

Regular Expression

^.*(?:/[*]{2}|[*]/).*$\n?

New

/**
/// Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
/// Lorem Ipsum has been the industry's standard dummy text ever since the 
/// 1500s, when an unknown printer took a galley of type and scrambled it to 
/// make a type specimen book. It has survived not only five centuries, but 
/// also the leap into electronic typesetting, remaining essentially 
/// unchanged. It was popularised in the 1960s with the release of Letraset 
/// sheets containing Lorem Ipsum passages, and more recently with desktop 
/// publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  */

[rest of code]

Extraction

/**
/// Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
/// Lorem Ipsum has been the industry's standard dummy text ever since the 
/// 1500s, when an unknown printer took a galley of type and scrambled it to 
/// make a type specimen book. It has survived not only five centuries, but 
/// also the leap into electronic typesetting, remaining essentially 
/// unchanged. It was popularised in the 1960s with the release of Letraset 
/// sheets containing Lorem Ipsum passages, and more recently with desktop 
/// publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  */

[rest of code]