Merge mysql.com:/home/jimw/my/mysql-5.0-10251

into mysql.com:/home/jimw/my/mysql-5.0-clean

client/mysqltest.c

@@ -2024,11 +2024,11 @@ my_bool end_of_query(int c)
 int read_line(char* buf, int size)
 {
   int c;
+  char quote;
   char* p= buf, *buf_end= buf + size - 1;
   int no_save= 0;
-  enum {R_NORMAL, R_Q1, R_ESC_Q_Q1, R_ESC_Q_Q2,
-	R_ESC_SLASH_Q1, R_ESC_SLASH_Q2,
-	R_Q2, R_COMMENT, R_LINE_START} state= R_LINE_START;
+  enum {R_NORMAL, R_Q, R_Q_IN_Q, R_SLASH_IN_Q,
+	R_COMMENT, R_LINE_START} state= R_LINE_START;
   DBUG_ENTER("read_line");
 
   start_lineno= *lineno;
@@ -2063,10 +2063,11 @@ int read_line(char* buf, int size)
 	*p= 0;
 	DBUG_RETURN(0);
       }
-      else if (c == '\'')
-	state = R_Q1;
-      else if (c == '"')
-	state = R_Q2;
+      else if (c == '\'' || c == '"' || c == '`')
+      {
+        quote= c;
+	state= R_Q;
+      }
       else if (c == '\n')
       {
 	state = R_LINE_START;
@@ -2101,55 +2102,36 @@ int read_line(char* buf, int size)
 	*p= 0;
 	DBUG_RETURN(0);
       }
-      else if (c == '\'')
-	state= R_Q1;
-      else if (c == '"')
-	state= R_Q2;
-      else
-	state= R_NORMAL;
-      break;
-
-    case R_Q1:
-      if (c == '\'')
-	state= R_ESC_Q_Q1;
-      else if (c == '\\')
-	state= R_ESC_SLASH_Q1;
-      break;
-    case R_ESC_Q_Q1:
-      if (end_of_query(c))
+      else if (c == '\'' || c == '"' || c == '`')
       {
-	*p= 0;
-	DBUG_RETURN(0);
+        quote= c;
+	state= R_Q;
       }
-      if (c != '\'')
-	state= R_NORMAL;
       else
-	state= R_Q1;
-      break;
-    case R_ESC_SLASH_Q1:
-      state= R_Q1;
+	state= R_NORMAL;
       break;
 
-    case R_Q2:
-      if (c == '"')
-	state= R_ESC_Q_Q2;
+    case R_Q:
+      if (c == quote)
+	state= R_Q_IN_Q;
       else if (c == '\\')
-	state= R_ESC_SLASH_Q2;
+	state= R_SLASH_IN_Q;
       break;
-    case R_ESC_Q_Q2:
+    case R_Q_IN_Q:
       if (end_of_query(c))
       {
 	*p= 0;
 	DBUG_RETURN(0);
       }
-      if (c != '"')
+      if (c != quote)
 	state= R_NORMAL;
       else
-	state= R_Q2;
+	state= R_Q;
       break;
-    case R_ESC_SLASH_Q2:
-      state= R_Q2;
+    case R_SLASH_IN_Q:
+      state= R_Q;
       break;
+
     }
 
     if (!no_save)

mysql-test/r/mysqltest.result

@@ -142,3 +142,9 @@ after_--enable_abort_on_error
 1064
 select 3 from t1 ;
 ERROR 42S02: Table 'test.t1' doesn't exist
+select 1 as `a'b`, 2 as `a"b`;
+a'b	a"b
+1	2
+select 'aaa\\','aa''a',"aa""a";
+aaa\	aa'a	aa"a
+aaa\	aa'a	aa"a

mysql-test/t/mysqltest.test

@@ -286,3 +286,12 @@ select 3 from t1 ;
 #select 3 from t1 ;
 #
 #select 3 from t1 ;
+
+
+#
+# Bug #10251: Identifiers containing quotes not handled correctly
+#
+select 1 as `a'b`, 2 as `a"b`;
+
+# Test escaping of quotes
+select 'aaa\\','aa''a',"aa""a";