SELECT 
  n.nspname AS routine_schema, 
  p.proname AS routine_name,
pg_get_function_identity_arguments(p.oid) AS parameters,
  CASE WHEN p.prokind='f' THEN 'FUNCTION'
  WHEN p.prokind='p' THEN 'PROCEDURE'
  WHEN p.prokind='w' THEN 'WINDOW FUNCTION' END AS routine_type,
  regexp_replace(pg_get_functiondef(p.oid),'[\r\n]','<br>','g')  AS routine_src,
  d.description AS comment
FROM 
  (pg_catalog.pg_proc p JOIN pg_catalog.pg_namespace n ON p.pronamespace = n.oid) LEFT JOIN pg_catalog.pg_description d ON p.oid=d.objoid
WHERE 
 p.proname NOT IN ('f_assume_you_must_use_files', 'f_check_format_comma_separated_list', 'f_check_password', 'f_default_value_with_no_match') 
 AND p.prokind<>'a'
 AND n.nspname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL) 
AND d.description IS NOT NULL 
AND pg_get_functiondef(p.oid)~*'(/[*]|--)' 
AND NOT EXISTS (SELECT 1
FROM pg_catalog.pg_depend d 
WHERE EXISTS (SELECT 1 
FROM pg_catalog.pg_extension e 
WHERE d.refobjid=e.oid) AND
d.objid=p.oid)
ORDER BY routine_schema, routine_name, parameters;