Event log records many things, and mainly among them are the files that you are visiting in Emacs.
23854 display::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/correct-terminology.pl::9465::0 23851 opened::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/correct-terminology.pl::9465::0 23852 closed::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/correct-terminology.pl::9465::0 23853 conceal::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/correct-terminology.pl::9465::0 23855 opened::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/add-capability.pl::9465::0 23860 display::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/add-capability.pl::9465::0 23856 closed::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/add-capability.pl::9465::0 23857 conceal::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/add-capability.pl::9465::0 23859 display::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/dvds/dvdauthor.xml::9465::0 23858 opened::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/dvds/dvdauthor.xml::9465::0 23862 conceal::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/dvds/dvdauthor.xml::9465::0 23861 closed::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/dvds/dvdauthor.xml::9465::0 23863 opened::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/fork.pl::9465::0 23864 display::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/fork.pl::9465::0 23865 closed::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/fork.pl::9465::0 23868 conceal::/var/lib/myfrdcsa/codebases/internal/evangelist/scripts/fork.pl::9465::0