The option added in #720 never made it onto the man page.
@ -207,6 +207,9 @@ Recursively search for PATTERN in PATH. Like grep or ack, but faster.
* `--workers NUM`:
Use NUM worker threads. Default is the number of CPU cores, with a max of 8.
* `-W --width NUM`:
Truncate match lines after NUM characters.
* `-z --search-zip`:
Search contents of compressed files. Currently, gz and xz are supported.
This option requires that ag is built with lzma and zlib.