Function replacement_if_match 

pub fn replacement_if_match(
    line: &str,
    search: &SearchType,
    replace: &str,
) -> Option<String>

Performs a search and replace operation on a string if the pattern matches

Arguments

• line - The string to search within
• search - The search pattern (fixed string, regex, or advanced regex)
• replace - The replacement string

Returns

• Some(String) containing the string with replacements if matches were found
• None if no matches were found