Regular Expressions :: modifiers
| modifier | meaning |
| /i | Ignore case in match |
| /s | Let . match newline and ignore depricated $* variable |
| /m | Let ^ and $ match next to embedded \n |
| /x | Ignore whitespace and comments in regex |
| /o | Compile pattern once only |
| /g | Repeat (with substitution operator) |
| /e | Evaluate replacement expression (with substitution operator) |