As there are a lot of plugins, it is easy to get a list of installed and available plugins longer than 15, so on headless servers or suing 80x24 character SSH terminal windows, it is esy to lose a lot of the plugins 'off screen'.
For me it was a bonus having over 40 plugins and running headless via a KVM switch. Also the fact that I administer the server on infrequent basis (I have other paying work to do).
Reduces need for scrolling tricks if possible or having to view config.php to find the plugin index required to install/uninstall. Less need to view config.php means less chances of other errors.
This mod replaces two sections of NEARLY identical code in the plugin display menu to give numbered plugin listing in three columns (truncates names > 21 characters). can easily be modified for different numbers of columns. Function can be used to give a numbered list in columns for other lists of strings
Please note that about 80% of the attached file is COMMENTS, for different places in conf.pl to note the changes and ALL lines changed.