D 2015-09-21T08:42:00.258
L regexp
U oehhar
W 227
The Spencer regexp engine is shared between PostGres and TCL.

Here is a link to the internal doc of the engine at Postgres: [http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob_plain;f=src/backend/regex/README;hb=HEAD]
Z b7941ffa91766e07044dbf8e81a4876b