[pango] don't break words between a letter adjacent to a number

[Jose Aliste <jaliste src gnome org>]

commit 1aeb5c840e25a7d8538f701659d77dcd7b3a8444
Author: José Aliste <jaliste src gnome org>
Date:   Tue Apr 30 23:13:45 2013 -0400

    don't break words between a letter adjacent to a number
    
    Newer Unicode specs (6.2 for instance)
    say that one should not break between letter or numbers
    that are adjacent. This also makes us to match word selection
    with many text capable apps.

 pango/break.c |   19 ++-----------------
 1 files changed, 2 insertions(+), 17 deletions(-)
---
diff --git a/pango/break.c b/pango/break.c
index dd55eda..abdf45b 100644
--- a/pango/break.c
+++ b/pango/break.c
@@ -453,8 +453,8 @@ typedef enum
   STATE_SENTENCE_POST_DOT_SEP
 } SentenceState;
 
-/* We call "123" and "foobar" words, but "123foo" is two words;
- * the Unicode spec just calls "123" a non-word
+/* Previously "123foo" was two words. But in UAX 29 of Unicode, 
+ * we know don't break words between consecutive letters and numbers
  */
 typedef enum
 {
@@ -1155,27 +1155,12 @@ pango_default_break (const gchar   *text,
                        attrs[i].is_word_end = TRUE;
                    }
                }
-             else
-               {
-                 /* end the number word, start the letter word */
-                 attrs[i].is_word_end = TRUE;
-                 attrs[i].is_word_start = TRUE;
-                 current_word_type = WordLetters;
-               }
-
              last_word_letter = wc;
              break;
 
            case G_UNICODE_DECIMAL_NUMBER:
            case G_UNICODE_LETTER_NUMBER:
            case G_UNICODE_OTHER_NUMBER:
-             if (current_word_type != WordNumbers)
-               {
-                 attrs[i].is_word_end = TRUE;
-                 attrs[i].is_word_start = TRUE;
-                 current_word_type = WordNumbers;
-               }
-
              last_word_letter = wc;
              break;