| C | |
| callout [Pcre] | Type of callout functions | 
| callout_data [Pcre] | |
| cflag [Pcre] | Compilation flags | 
| chtables [Pcre] | Alternative set of char tables for pattern matching | 
| E | |
| error [Pcre] | |
| F | |
| firstbyte_info [Pcre] | Information on matching of "first chars" in patterns | 
| I | |
| icflag [Pcre] | Internal representation of compilation flags | 
| irflag [Pcre] | Internal representation of runtime flags | 
| R | |
| regexp [Pcre] | Compiled regular expressions | 
| rflag [Pcre] | Runtime flags | 
| S | |
| split_result [Pcre] | Result of a  | 
| study_stat [Pcre] | Information on the study status of patterns | 
| substitution [Pcre] | Information on substitution patterns | 
| substrings [Pcre] | Information on substrings after pattern matching |