ctags

--recurse=yes
--tag-relative=yes
--exclude=.git
--exclude=target
--exclude=.git
--exclude=.svn
--exclude=.hg
--exclude=node_modules
--exclude=bundle.js
--exclude=*.js.map
--exclude=*.min.*
--exclude=*.swp
--exclude=*.bak
--exclude=*.tar.*
--langdef=scala
--langmap=scala:.scala
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*(private|protected)?[ \t ]*class[ \t ]+([a-zA-Z0-9_]+)/\4/c,classes/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*(private|protected)?[ \t ]*object[ \t ]+([a-zA-Z0-9_]+)/\4/c,objects/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*(private|protected)?[ \t ]*case class[ \t ]+([a-zA-Z0-9_]+)/\4/c,case classes/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*(private|protected)?[ \t ]*case object[ \t ]+([a-zA-Z0-9_]+)/\4/c,case objects/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*(private|protected)?[ \t ]*trait[ \t ]+([a-zA-Z0-9_]+)/\4/t,traits/
--regex-scala=/^[ \t ]*type[ \t ]+([a-zA-Z0-9_]+)/\1/T,types/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*def[ \t ]+([a-zA-Z0-9_]+)/\3/m,methods/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*val[ \t ]+([a-zA-Z0-9_]+)/\3/l,constants/
--regex-scala=/^[ \t ]*((abstract|final|sealed|implicit|lazy)[ \t ]*)*var[ \t ]+([a-zA-Z0-9_]+)/\3/l,variables/
--regex-scala=/^[ \t ]*package[ \t ]+([a-zA-Z0-9_.]+)/\1/p,packages/