Followup for character properties in 2011-08-23T11:48:07Z!handa@m17n.org.

 src/bidi.c (bidi_get_type): Abort if we get zero as the bidi type of
 a character.
 admin/unidata/unidata-gen.el (unidata-prop-alist): Update the default
 values of bidi-class according to DerivedBidiClass.txt from the
 latest UCD.
 lisp/international/uni-bidi.el: Regenerated.
 doc/lispref/nonascii.texi (Character Properties): Document the values for
 unassigned codepoints.

2 files changed, 11 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e7d426f23fb..c629598fcf7 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-23  Eli Zaretskii  <eliz@gnu.org>
+
+        * bidi.c (bidi_get_type): Abort if we get zero as the bidi type of
+        a character.
+
 2011-08-23  Chong Yidong  <cyd@stupidchicken.com>
 
         * nsfont.m (ns_otf_to_script): Fix typo.
diff --git a/src/bidi.c b/src/bidi.c
index 7517eca5aed..00aa31bf48d 100644
--- a/src/bidi.c
+++ b/src/bidi.c
@@ -108,8 +108,12 @@ bidi_get_type (int ch, bidi_dir_t override)
     abort ();
 
   default_type = (bidi_type_t) XINT (CHAR_TABLE_REF (bidi_type_table, ch));
-  if (default_type == 0)
-    default_type = STRONG_L;
+  /* Every valid character code, even those that are unassigned by the
+     UCD, have some bidi-class property, according to
+     DerivedBidiClass.txt file.  Therefore, if we ever get UNKNOWN_BT
+     (= zero) code from CHAR_TABLE_REF, that's a bug.  */
+  if (default_type == UNKNOWN_BT)
+    abort ();
 
   if (override == NEUTRAL_DIR)
     return default_type;