| readline | |
| ======== | |
| Provides generic line editing, history, and tokenization functions. | |
| See https://www.php.net/manual/en/book.readline.php | |
| Implementation Details | |
| ---------------------- | |
| C variables starting with `rl_*` are declared by the readline library | |
| (or are macros referring to variables from the libedit library). | |
| See http://web.mit.edu/gnu/doc/html/rlman_2.html | |
| This should only be used in the CLI SAPI. | |
| Historically, the code lived in sapi/cli, | |
| but many distributions build readline as a shared extension. | |
| Therefore, that code was split into ext/readline so that this can dynamically | |
| be loaded. With other SAPIs, readline is/should be disabled. | |
| `readline_cli.c` implements most of the interactive shell(`php -a`). | |