Treat U_ARABIC_NUMBER as LTR

Author: Shreeshrii

src/ccstruct/pageres.h

@@ -398,8 +398,7 @@ class WERD_RES : public ELIST_LINK {
       UNICHARSET::Direction dir =
           uch_set->get_direction(unichar_id);
       if (dir == UNICHARSET::U_RIGHT_TO_LEFT ||
-          dir == UNICHARSET::U_RIGHT_TO_LEFT_ARABIC ||
-          dir == UNICHARSET::U_ARABIC_NUMBER)
+          dir == UNICHARSET::U_RIGHT_TO_LEFT_ARABIC)
         return true;
     }
     return false;
@@ -413,7 +412,8 @@ class WERD_RES : public ELIST_LINK {
       if (unichar_id < 0 || unichar_id >= uch_set->size())
         continue;  // Ignore illegal chars.
       UNICHARSET::Direction dir = uch_set->get_direction(unichar_id);
-      if (dir == UNICHARSET::U_LEFT_TO_RIGHT)
+      if (dir == UNICHARSET::U_LEFT_TO_RIGHT ||
+          dir == UNICHARSET::U_ARABIC_NUMBER)
         return true;
     }
     return false;

src/training/boxchar.cpp

@@ -63,9 +63,10 @@ void BoxChar::GetDirection(int* num_rtl, int* num_ltr) const {
   for (char32 ch : uni_vector) {
     UCharDirection dir = u_charDirection(ch);
     if (dir == U_RIGHT_TO_LEFT || dir == U_RIGHT_TO_LEFT_ARABIC ||
-        dir == U_ARABIC_NUMBER || dir == U_RIGHT_TO_LEFT_ISOLATE) {
+        dir == U_RIGHT_TO_LEFT_ISOLATE) {
       ++*num_rtl;
-    } else if (dir != U_DIR_NON_SPACING_MARK && dir != U_BOUNDARY_NEUTRAL) {
+    } else if ((dir == U_ARABIC_NUMBER) ||
+	          (dir != U_DIR_NON_SPACING_MARK && dir != U_BOUNDARY_NEUTRAL)) {
       ++*num_ltr;
     }
   }