Manpage reference to otherwise unlisted option '-A' or '--auto-number'

[jamespharvey20]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2019.04.30
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

man youtube-dl

or

youtube-dl --help

Description

man youtube-dl doesn't list -A or --auto-number under options, and youtube-dl --help doesn't list it at all.

Yet, man youtube-dl under "FAQ" and "I'm getting an error when trying to use output template" references it:

   I'm getting an error when trying to use output template:
       error: using output template conflicts with using title, video ID or auto number

       Make sure you are not using -o with any of these options -t, --title, --id, -A or --auto-number set in command line or in a configuration file.  Remove the latter if any.

Haven't checked source & git history. Maybe this is an undocumented option, or maybe this is an option previously removed with a dangling reference to it in the FAQ.

[dstftw]

--auto-number is deprecated.