This package consumes the following services:
selection-counter package
This package adds a simple indication of the number of lines in selection, number of cursors and number of selections in the buffer

selection-counter can be customized by means of editing the pattern of the text shown in the status bar. It allows the following macros: %l is replaced by the total number of lines selected, %c by the number of cursors present, while %s by the number of selections present.