PY-13232 Remove ignoring of multiline comments that was previously added for PY-12932

It would not help to preseve indentation of code fragments commented
without whitespace after '#' (i.e. commented not in PyCharm) anyway.

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

@@ -109,10 +109,6 @@ public class PyPreFormatProcessor implements PreFormatProcessor {
         if (charAfterDash == '#' || charAfterDash == ':') {
           return; // doc comment
         }
-        if (commentSpansSeveralLines(comment)) {
-          return;
-        }
-
         final String commentTextWithoutDash = origText.substring(commentStart + 1);
         final String newText;
         if (isTrailingComment(comment)) {
@@ -134,38 +130,6 @@ public class PyPreFormatProcessor implements PreFormatProcessor {
     }
   }
 
-  private static boolean commentSpansSeveralLines(@NotNull PsiComment comment) {
-
-    for (PsiElement prevElement = comment.getPrevSibling(); prevElement != null; prevElement = prevElement.getPrevSibling()) {
-      if (prevElement instanceof PsiWhiteSpace) {
-        if (StringUtil.countNewLines(prevElement.getText()) > 1) {
-          break;
-        }
-      }
-      else if (prevElement instanceof PsiComment) {
-        return true;
-      }
-      else {
-        break;
-      }
-    }
-
-    for (PsiElement nextElement = comment.getNextSibling(); nextElement != null; nextElement = nextElement.getNextSibling()) {
-      if (nextElement instanceof PsiWhiteSpace) {
-        if (StringUtil.countNewLines(nextElement.getText()) > 1) {
-          break;
-        }
-      }
-      else if (nextElement instanceof PsiComment) {
-        return true;
-      }
-      else {
-        break;
-      }
-    }
-    return false;
-  }
-
   private static boolean isTrailingComment(@NotNull PsiComment comment) {
     final PsiElement prevElement = comment.getPrevSibling();
     return !(prevElement instanceof PsiWhiteSpace) || !prevElement.textContains('\n');

python/testData/formatter/multilineCommentIgnored.py

@@ -1,7 +0,0 @@
-#    This line is not considered as part of multiline comment.
-
-#for c in string.ascii_lowercase:
-#    if c not in 'aeiou':
-#        print(c)
-
-#And this one too.

python/testData/formatter/multilineCommentIgnored_after.py

@@ -1,7 +0,0 @@
-# This line is not considered as part of multiline comment.
-
-#for c in string.ascii_lowercase:
-#    if c not in 'aeiou':
-#        print(c)
-
-# And this one too.

python/testData/formatter/whitespaceInsertedAfterHashSignInMultilineComment.py

@@ -0,0 +1,4 @@
+#some
+#invalid
+#pep-8
+#comment

python/testData/formatter/whitespaceInsertedAfterHashSignInMultilineComment_after.py

@@ -0,0 +1,4 @@
+# some
+# invalid
+# pep-8
+# comment

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

@@ -496,11 +496,6 @@ public class PyFormatterTest extends PyTestCase {
     doTest();
   }
 
-  // PY-12932
-  public void testMultilineCommentIgnored() {
-    doTest();
-  }
-
   // PY-12938
   public void testDoubleHashCommentIgnored() {
     doTest();
@@ -516,6 +511,11 @@ public class PyFormatterTest extends PyTestCase {
     doTest();
   }
 
+  // PY-13232
+  public void testWhitespaceInsertedAfterHashSignInMultilineComment() {
+    doTest();
+  }
+
   /**
    * This test merely checks that call to {@link com.intellij.psi.codeStyle.CodeStyleManager#reformat(com.intellij.psi.PsiElement)}
    * is possible for Python sources.