Listers are special segment collections which allow to show some list of segments for each entity in the list of entities (multiply their segments list by a list of entities). E.g. powerline.listers.vim.tablister presented with powerline.segments.vim.tabnr and ….file_name as segments will emit segments with buffer names and tabpage numbers for each tabpage shown by vim.
Listers appear in configuration as irregular segments having segment_list as their type and segments key with a list of segments (a bit more details in Themes section of configuration reference <config-themes-segments>).
More information in Writing listers <dev-listers> section.
powerline.listers.vim
powerline.listers.pdb
i3wm listers ----------
powerline.listers.i3wm