snippet [[ "lit named regex" i
[[${1:name}${2::${3:regex}}]]
endsnippet

snippet {{ "lit regex" i
{{${1:regex}}}
endsnippet

snippet gid "lit global ID regex" i
@[a-zA-Z0-9_]+
endsnippet

snippet id "lit ID regex" i
%[a-zA-Z0-9_]+
endsnippet