Function replace_all_if_match 

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

Calculate replacement text for a line containing matches.

This is used in line-mode search where we replace ALL occurrences of the pattern on the line(s). Returns the full line content with all matches replaced.

For both fixed and pattern searches, this uses replace_all semantics.

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 ALL replacements if matches were found
• None if no matches were found