diff --git a/code_examples/Reporting2.pm b/code_examples/Reporting2.pm
index f521e8c..9e7aa43 100644
--- a/code_examples/Reporting2.pm
+++ b/code_examples/Reporting2.pm
@@ -9,7 +9,8 @@ sub foo {
 
 #@@:heredoc:sql
 my $s = <<EOT;
-select '<foo attr="3">bar bar</foo>';
+--@@:string:xml
+select '<foo attr="3">blah blah blah</foo>';
 drop table foog;
 insert into mytable (col1, col2, "col3") values (99, 33, 1234);
 select cast(plunk as timestamp) from blarg join plarg using(id_what) where x = 3;
diff --git a/mode/sql.py b/mode/sql.py
index af2e046..062f4e3 100644
--- a/mode/sql.py
+++ b/mode/sql.py
@@ -1,5 +1,5 @@
 import mode, tab
-from lex import Grammar, PatternRule, NocasePatternRule, RegionRule, NocaseRegionRule
+from lex import Grammar, PatternRule, NocasePatternRule, RegionRule, NocaseRegionRule, OverridePatternRule
 from mode.python import StringGrammar1, StringGrammar2
 
 class BitStringGrammar(Grammar):
@@ -10,6 +10,7 @@ class HexStringGrammar(Grammar):
 
 base_rules = [
     PatternRule(r'spaces', r' +'),
+    OverridePatternRule(r'comment', r'--@@:(?P<token>[.a-zA-Z0-9_]+):(?P<mode>[.a-zA-Z0-9_]+) *$'),
     PatternRule(r'comment', r'--.*\n$'),
     RegionRule(r'comment', '/\*', Grammar, '\*/'),
     PatternRule(r'delimiter', r':=|[():;,\.\$\[\]~]'),