Fix SELECT tokenization before parenthesis

sqlparse/lexer.py

@@ -154,6 +154,11 @@ def get_tokens(self, text, encoding=None):
 
                 if not m:
                     continue
+                elif action is tokens.Name and m.group().upper() == 'SELECT':
+                    # The function-name lookahead runs before keyword lookup.
+                    # SELECT followed immediately by "(" is still a DML
+                    # keyword, not a function name (see issue #775).
+                    yield tokens.Keyword.DML, m.group()
                 elif isinstance(action, tokens._TokenType):
                     yield action, m.group()
                 elif action is keywords.PROCESS_AS_KEYWORD:

tests/test_issue775.py

@@ -0,0 +1,13 @@
+import sqlparse
+
+from sqlparse import sql
+from sqlparse import tokens as T
+
+
+def test_select_followed_by_parenthesis_without_space():
+    statement = sqlparse.parse('select(select 1)')[0]
+
+    assert statement.get_type() == 'SELECT'
+    assert statement.tokens[0].ttype is T.Keyword.DML
+    assert statement.tokens[0].value == 'select'
+    assert isinstance(statement.tokens[1], sql.Parenthesis)