diff --git a/python/gen/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.java b/python/gen/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.java
index fb7fb5410633..66dc6bbf61f0 100644
--- a/python/gen/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.java
+++ b/python/gen/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.java
@@ -112,7 +112,7 @@ public class _CommandLineLexer implements FlexLexer {
 
   /* The ZZ_CMAP_A table has 3088 entries */
   static final char ZZ_CMAP_A[] = zzUnpackCMap(
-    "\11\0\5\2\22\0\1\2\1\0\1\14\4\0\1\15\5\0\1\10\2\7\12\12\1\6\2\0\1\16\3\0\32"+
+    "\11\0\5\2\22\0\1\2\1\7\1\14\4\0\1\15\5\0\1\10\2\7\12\12\1\6\2\0\1\16\3\0\32"+
     "\5\1\0\1\6\2\0\1\4\13\5\3\0\1\13\6\0\1\1\12\0\1\1\11\0\1\3\12\0\1\3\4\0\1"+
     "\3\5\0\27\3\1\0\12\3\4\0\14\3\16\0\5\3\7\0\1\3\1\0\1\3\1\0\5\3\1\0\2\3\2\0"+
     "\4\3\1\0\1\3\6\0\1\3\1\0\3\3\1\0\1\3\1\0\4\3\1\0\23\3\1\0\13\3\10\0\6\3\1"+
diff --git a/python/src/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.flex b/python/src/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.flex
index 21b90331e648..d75b0ad64835 100644
--- a/python/src/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.flex
+++ b/python/src/com/jetbrains/commandInterface/commandLine/_CommandLineLexer.flex
@@ -26,15 +26,15 @@ EOL=\R
 WHITE_SPACE=\s+
 
 SPACE=[ \t\n\x0B\f\r]+
-LITERAL_STARTS_FROM_LETTER=[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-)*
-LITERAL_STARTS_FROM_DIGIT=[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-)*
-LITERAL_STARTS_FROM_SYMBOL=([/\~\.]([a-zA-Z_0-9]|:|\\|"/"|\.|-)*)
-SPACED_LITERAL_STARTS_FROM_LETTER=\"[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*\"
-SPACED_LITERAL_STARTS_FROM_DIGIT=\"[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*\"
-SPACED_LITERAL_STARTS_FROM_SYMBOL=\"([/\~\.]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*)\"
-SINGLE_Q_SPACED_LITERAL_STARTS_FROM_LETTER='[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*'
-SINGLE_Q_SPACED_LITERAL_STARTS_FROM_DIGIT='[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*'
-SINGLE_Q_SPACED_LITERAL_STARTS_FROM_SYMBOL='([/\~\.]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r])*)'
+LITERAL_STARTS_FROM_LETTER=[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|\!)*
+LITERAL_STARTS_FROM_DIGIT=[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|\!)*
+LITERAL_STARTS_FROM_SYMBOL=([/\~\.!]([a-zA-Z_0-9]|:|\\|"/"|\.|-|\!)*)
+SPACED_LITERAL_STARTS_FROM_LETTER=\"[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*\"
+SPACED_LITERAL_STARTS_FROM_DIGIT=\"[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*\"
+SPACED_LITERAL_STARTS_FROM_SYMBOL=\"([/\~\.!]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*)\"
+SINGLE_Q_SPACED_LITERAL_STARTS_FROM_LETTER='[:letter:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*'
+SINGLE_Q_SPACED_LITERAL_STARTS_FROM_DIGIT='[:digit:]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*'
+SINGLE_Q_SPACED_LITERAL_STARTS_FROM_SYMBOL='([/\~\.!]([a-zA-Z_0-9]|:|\\|"/"|\.|-|[ \t\n\x0B\f\r]|\!)*)'
 SHORT_OPTION_NAME_TOKEN=-[:letter:]
 LONG_OPTION_NAME_TOKEN=--[:letter:](-|[a-zA-Z_0-9])*
 
diff --git a/python/src/com/jetbrains/commandInterface/commandLine/command_line.bnf b/python/src/com/jetbrains/commandInterface/commandLine/command_line.bnf
index d007fa9c9666..072f69405e35 100644
--- a/python/src/com/jetbrains/commandInterface/commandLine/command_line.bnf
+++ b/python/src/com/jetbrains/commandInterface/commandLine/command_line.bnf
@@ -25,18 +25,18 @@
   tokens=[
     space='regexp:\s+' // WARNING: Comment out or remove this (space) before generating Flex file! It is here only for live preview.
     EQ = '='
-    LITERAL_STARTS_FROM_LETTER='regexp:\p{Alpha}(\w|:|\\|/|\.|-)*'
-    LITERAL_STARTS_FROM_DIGIT='regexp:\p{Digit}(\w|:|\\|/|\.|-)*'
-    LITERAL_STARTS_FROM_SYMBOL='regexp:([/\~\.](\w|:|\\|/|\.|-)*)'
+    LITERAL_STARTS_FROM_LETTER='regexp:\p{Alpha}(\w|:|\\|/|\.|-|\!)*'
+    LITERAL_STARTS_FROM_DIGIT='regexp:\p{Digit}(\w|:|\\|/|\.|-|\!)*'
+    LITERAL_STARTS_FROM_SYMBOL='regexp:([/\~\.!](\w|:|\\|/|\.|-|\!)*)'
 
-    SPACED_LITERAL_STARTS_FROM_LETTER='regexp:"\p{Alpha}(\w|:|\\|/|\.|-|\s)*"'
-    SPACED_LITERAL_STARTS_FROM_DIGIT='regexp:"\p{Digit}(\w|:|\\|/|\.|-|\s)*"'
-    SPACED_LITERAL_STARTS_FROM_SYMBOL='regexp:"([/\~\.](\w|:|\\|/|\.|-|\s)*)"'
+    SPACED_LITERAL_STARTS_FROM_LETTER='regexp:"\p{Alpha}(\w|:|\\|/|\.|-|\s|\!)*"'
+    SPACED_LITERAL_STARTS_FROM_DIGIT='regexp:"\p{Digit}(\w|:|\\|/|\.|-|\s|\!)*"'
+    SPACED_LITERAL_STARTS_FROM_SYMBOL='regexp:"([/\~\.!](\w|:|\\|/|\.|-|\s|\!)*)"'
 
 
-    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_LETTER="regexp:'\p{Alpha}(\w|:|\\|/|\.|-|\s)*'"
-    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_DIGIT="regexp:'\p{Digit}(\w|:|\\|/|\.|-|\s)*'"
-    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_SYMBOL="regexp:'([/\~\.](\w|:|\\|/|\.|-|\s)*)'"
+    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_LETTER="regexp:'\p{Alpha}(\w|:|\\|/|\.|-|\s|\!)*'"
+    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_DIGIT="regexp:'\p{Digit}(\w|:|\\|/|\.|-|\s|\!)*'"
+    SINGLE_Q_SPACED_LITERAL_STARTS_FROM_SYMBOL="regexp:'([/\~\.!](\w|:|\\|/|\.|-|\s|\!)*)'"
 
 
 
diff --git a/python/testData/testRunner/env/nose/test_with_slow/test_with_slow.py b/python/testData/testRunner/env/nose/test_with_slow/test_with_slow.py
new file mode 100644
index 000000000000..fbccf0507e42
--- /dev/null
+++ b/python/testData/testRunner/env/nose/test_with_slow/test_with_slow.py
@@ -0,0 +1,8 @@
+from nose.plugins.attrib import attr
+
+def test_fast():
+    pass
+
+@attr('slow')
+def test_Slow():
+    pass
\ No newline at end of file
diff --git a/python/testSrc/com/jetbrains/env/python/testing/PythonNoseTestingTest.java b/python/testSrc/com/jetbrains/env/python/testing/PythonNoseTestingTest.java
index abd1870f47b0..839ee3ede14a 100644
--- a/python/testSrc/com/jetbrains/env/python/testing/PythonNoseTestingTest.java
+++ b/python/testSrc/com/jetbrains/env/python/testing/PythonNoseTestingTest.java
@@ -6,11 +6,14 @@ import com.jetbrains.env.PyEnvTestCase;
 import com.jetbrains.env.PyProcessWithConsoleTestTask;
 import com.jetbrains.env.python.testing.CreateConfigurationTestTask.PyConfigurationCreationTask;
 import com.jetbrains.env.ut.PyNoseTestProcessRunner;
+import com.jetbrains.env.ut.PyTestTestProcessRunner;
 import com.jetbrains.python.sdkTools.SdkCreationType;
 import com.jetbrains.python.testing.PythonTestConfigurationsModel;
 import com.jetbrains.python.testing.universalTests.PyUniversalNoseTestConfiguration;
 import com.jetbrains.python.testing.universalTests.PyUniversalNoseTestFactory;
+import com.jetbrains.python.testing.universalTests.PyUniversalPyTestConfiguration;
 import org.jetbrains.annotations.NotNull;
+import org.junit.Assert;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -23,6 +26,41 @@ import static org.junit.Assert.assertEquals;
 @EnvTestTagsRequired(tags = "nose")
 public final class PythonNoseTestingTest extends PyEnvTestCase {
 
+
+  // Ensure slow test is not run when --attr="!slow"  is provided
+  @Test
+  public void testMarkerWithSlow() throws Exception {
+    runPythonTest(
+      new PyProcessWithConsoleTestTask<PyNoseTestProcessRunner>("/testRunner/env/nose/test_with_slow", SdkCreationType.EMPTY_SDK) {
+
+        @NotNull
+        @Override
+        protected PyNoseTestProcessRunner createProcessRunner() throws Exception {
+          return new PyNoseTestProcessRunner("test_with_slow.py", 0) {
+            @Override
+            protected void configurationCreatedAndWillLaunch(@NotNull PyUniversalNoseTestConfiguration configuration) throws IOException {
+              super.configurationCreatedAndWillLaunch(configuration);
+              configuration.setAdditionalArguments("--attr=\"!slow\"");
+            }
+          };
+        }
+
+
+        @Override
+        protected void checkTestResults(@NotNull PyNoseTestProcessRunner runner,
+                                        @NotNull String stdout,
+                                        @NotNull String stderr,
+                                        @NotNull String all) {
+          Assert.assertEquals("--slow runner borken", "Test tree:\n" +
+                                                       "[root]\n" +
+                                                       ".test_with_slow\n" +
+                                                       "..test_fast(+)\n",
+                              runner.getFormattedTestTree());
+        }
+      });
+  }
+
+
   @Test
   public void testMultipleCases() throws Exception {
     runPythonTest(