SpellChecker:fix IdentifierSplitter (support numbers in names IDEA-53401)

plugins/spellchecker/src/com/intellij/spellchecker/inspections/BaseSplitter.java

@@ -47,15 +47,6 @@ public abstract class BaseSplitter implements Splitter {
   }
 
 
-  protected static boolean isAllWordsAreUpperCased(String[] words) {
-    if (words == null) return false;
-    for (String word : words) {
-      if (!Strings.isUpperCase(word)) {
-        return false;
-      }
-    }
-    return true;
-  }
 
   protected static boolean isAllWordsAreUpperCased(@NotNull String text, @NotNull List<TextRange> words) {
     for (TextRange word : words) {

plugins/spellchecker/src/com/intellij/spellchecker/inspections/IdentifierSplitter.java

@@ -33,7 +33,7 @@ public class IdentifierSplitter extends BaseSplitter {
   private static final Pattern WORD = Pattern.compile("\\b\\p{L}*'?\\p{L}*");
 
   @NonNls
-  private static final Pattern WORD_EXT = Pattern.compile("(\\p{L}*?)[-_$\\[\\]]");
+  private static final Pattern WORD_EXT = Pattern.compile("(\\p{L}*?)[-_$\\[\\]0-9]");
 
   @NonNls
   private static final Pattern WORD_IN_QUOTES = Pattern.compile("'([^']*)'");

plugins/spellchecker/testSrc/com/intellij/spellchecker/inspector/SplitterTest.java

@@ -120,6 +120,17 @@ public class SplitterTest extends TestCase {
     correctListToCheck(checkAreas, text, new String[]{});
   }
 
+   public void testIdentifiersWithNumbers() {
+    String text = "result1";
+    List<CheckArea> checkAreas = SplitterFactory.getInstance().getIdentifierSplitter().split(text);
+    correctListToCheck(checkAreas, text, new String[]{"result"});
+  }
+
+    public void testIdentifiersWithNumbersInside() {
+    String text = "result1result";
+    List<CheckArea> checkAreas = SplitterFactory.getInstance().getIdentifierSplitter().split(text);
+    correctListToCheck(checkAreas, text, new String[]{"result","result"});
+  }
 
   public void testWordWithApostrophe2() {
     String text = "customers'";