failing test for PY-1065

python/src/META-INF/python-plugin-common.xml

@@ -176,6 +176,7 @@
                    serviceImplementation="com.jetbrains.python.psi.resolve.PythonPathCache"/>
 
     <preserveIndentOnPaste fileType="Python"/>
+    <lang.whiteSpaceFormattingStrategy language="Python" implementationClass="com.jetbrains.python.formatter.PyWhiteSpaceFormattingStrategy"/>
 
     <!-- Django -->
     <codeInsight.lineMarkerProvider language="Python" implementationClass="com.jetbrains.django.annotator.ViewMethodLineMarkerProvider"/>

python/src/com/jetbrains/python/formatter/PyBlock.java

@@ -98,9 +98,11 @@ public class PyBlock implements ASTBlock {
         // whitespace between sub-blocks would include \ characters,
         // because the IDEA 5.0/5.1 formatter core requires that whitespace
         // between blocks must include whitespace-only characters
+        /*
         if (child.getText().indexOf('\\') >= 0) {
           return Collections.emptyList();
         }
+        */
 
         continue;
       }

python/src/com/jetbrains/python/formatter/PyWhiteSpaceFormattingStrategy.java

@@ -0,0 +1,20 @@
+package com.jetbrains.python.formatter;
+
+import com.intellij.formatting.WhiteSpaceFormattingStrategy;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author yole
+ */
+public class PyWhiteSpaceFormattingStrategy implements WhiteSpaceFormattingStrategy {
+  @Override
+  public int check(@NotNull CharSequence text, int start, int end) {
+    for (int i = start; i < end; i++) {
+      char c = text.charAt(i);
+      if (c != ' ' && c != '\t' && c != '\n' && c != '\\') {
+        return i;
+      }
+    }
+    return end;
+  }
+}

python/testData/formatter/spaceAfterCommaWrappedLine.py

@@ -0,0 +1,2 @@
+import contextlib,\
+    math,decimal

python/testData/formatter/spaceAfterCommaWrappedLine_after.py

@@ -0,0 +1,2 @@
+import contextlib,\
+    math, decimal

python/testSrc/com/jetbrains/python/PyFormatterTest.java

@@ -72,6 +72,10 @@ public class PyFormatterTest extends PyLightFixtureTestCase {
     doTest();
   }
 
+  public void _testSpaceAfterCommaWrappedLine() {  // PY-1065
+    doTest();
+  }
+
   private void doTest() {
     myFixture.configureByFile("formatter/" + getTestName(true) + ".py");
     ApplicationManager.getApplication().runWriteAction(new Runnable() {