Clean up revertLastWord()

The "deleteChar" argument of this method is acutally always true in the current code path.
Also, in this method, textToTheLeft virtually never has a punctuation letter as its initial
character.  This change is one of preparatory changes for bug:4983945.

Change-Id: I531a32570a35634c21c1d74b2b461e40a1b7f660

1 files changed, 12 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/Utils.java b/java/src/com/android/inputmethod/latin/Utils.java
index 23ef1a03c..16a2b0e5f 100644
--- a/java/src/com/android/inputmethod/latin/Utils.java
+++ b/java/src/com/android/inputmethod/latin/Utils.java
@@ -190,6 +190,18 @@ public class Utils {
         }
     }
 
+    public static boolean canBeFollowedByPeriod(final int codePoint) {
+        // TODO: Check again whether there really ain't a better way to check this.
+        // TODO: This should probably be language-dependant...
+        return Character.isLetterOrDigit(codePoint)
+                || codePoint == Keyboard.CODE_SINGLE_QUOTE
+                || codePoint == Keyboard.CODE_DOUBLE_QUOTE
+                || codePoint == Keyboard.CODE_CLOSING_PARENTHESIS
+                || codePoint == Keyboard.CODE_CLOSING_SQUARE_BRACKET
+                || codePoint == Keyboard.CODE_CLOSING_CURLY_BRACKET
+                || codePoint == Keyboard.CODE_CLOSING_ANGLE_BRACKET;
+    }
+
     /* package */ static class RingCharBuffer {
         private static RingCharBuffer sRingCharBuffer = new RingCharBuffer();
         private static final char PLACEHOLDER_DELIMITER_CHAR = '\uFFFC';