下表列出了各种杂项构造−
| Construct | Definition | Example |
|---|---|---|
| (?imnsx-imnsx) | Sets or disables options such as case insensitivity in the middle of a pattern. | \bA(?i)b\w+\b matches "ABA", "Able" in "ABA Able Act" |
| (?#comment) | Inline comment. The comment ends at the first closing parenthesis. | \bA(?#Matches words starting with A)\w+\b |
| # [to end of line] | X-mode comment. The comment starts at an unescaped # and continues to the end of the line. | (?x)\bA\w+\b#Matches words starting with A |
