Fix rtl::OUString::compareToIgnoreAsciiCase

Change-Id: I40005ef4fad4d44314ec2fb2881fec82e926970e

sal/inc/rtl/ustring.hxx

@@ -527,8 +527,8 @@ public:
     /**
       Perform a ASCII lowercase comparison of two strings.
 
-      Compare teh two string with uppercase ASCII
-      character values between 65 and 90 (ASCII A-Z) are interpreted as
+      Compare the two strings with uppercase ASCII
+      character values between 65 and 90 (ASCII A-Z) interpreted as
       values between 97 and 122 (ASCII a-z).
       This function can't be used for language specific comparison.
 
@@ -536,13 +536,11 @@ public:
       @return   0 - if both strings are equal
                 < 0 - if this string is less than the string argument
                 > 0 - if this string is greater than the string argument
+
+      @since LibreOffice 4.0
     */
     sal_Int32 compareToIgnoreAsciiCase( const OUString & str ) const SAL_THROW(())
     {
-        if ( pData->length != str.pData->length )
-            return sal_False;
-        if ( pData == str.pData )
-            return sal_True;
         return rtl_ustr_compareIgnoreAsciiCase_WithLength( pData->buffer, pData->length,
                                                            str.pData->buffer, str.pData->length );
     }

sal/qa/rtl/strings/test_oustring_compare.cxx

@@ -32,9 +32,12 @@ private:
 
     void compareToAscii();
 
+    void compareToIgnoreAsciiCase();
+
 CPPUNIT_TEST_SUITE(Compare);
 CPPUNIT_TEST(equalsIgnoreAsciiCaseAscii);
 CPPUNIT_TEST(compareToAscii);
+CPPUNIT_TEST(compareToIgnoreAsciiCase);
 CPPUNIT_TEST_SUITE_END();
 };
 
@@ -70,4 +73,16 @@ void test::oustring::Compare::compareToAscii()
         sal_Int32(0), abc.compareToAscii(RTL_CONSTASCII_STRINGPARAM("a")));
 }
 
+void test::oustring::Compare::compareToIgnoreAsciiCase()
+{
+    CPPUNIT_ASSERT_EQUAL(
+        sal_Int32(0),
+        rtl::OUString("abc").compareToIgnoreAsciiCase(rtl::OUString("ABC")));
+    CPPUNIT_ASSERT(
+        rtl::OUString("ABC").compareToIgnoreAsciiCase(rtl::OUString("abcdef"))
+        < 0);
+    CPPUNIT_ASSERT(
+        rtl::OUString("A").compareToIgnoreAsciiCase(rtl::OUString("_")) > 0);
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */