I can't find what I'm looking for: plugins/opensource/link.md - url input field, autocomplete list

[mac93pl]

Hi! I'm trying to modify the link plugin. I want to use the benefits of autocomplete list that shows up while typing in url input field. Right now the list consists of internal anchors in my document plus 'top' and 'bottom' anchors; I work with the minimum link plugin settings. I want to find the part of a script that produces this list or the part that appends it to the 'url' input field in dialog window of a plugin and try to work with it, but I completly can't find any part of the code (in link plugin script) that produces this! It drives me crazy. I'd appreciate any help with that. Thanks in advance!