Re: Composing Hebrew diacriticals

[Yair F]

> Yair, does the above work for you?  For me (on MS-Windows), it
> infloops.  I will try to find out where it loops later.
>
The code below sort-of works for me.
However, composition only occurs sometimes. I believe it depends on
the font being used including font size.
How can I debug it further?

(Kubuntu/GTK/XFT)

(defconst hebrew-composable-pattern
  (concat
   "\\("
   "[\u05D0-\u05D4\u05D6-\u05E8\u05EA\u05F1-\u05F3]"
                                      ;; base (except vav and shin)
   "[\u05BC\u05BF]?"                  ;; 0-1 marks of 1st class (dagesh)
   "[\u05B0-\u05B9\u05BB\u05C7]?"     ;; 0-1 marks of 3rd class (vowel)
   "[\u0591-\u05AF\u05BD]*"           ;; 0-2 (3?) marks of 4th class (cantill.)
   "\\|"
   "\u05D5"                           ;; base (vav)
   "\u05BC?"                          ;; 0-1 marks of 1st class (dagesh)
   "[\u05B0-\u05BB\u05C7]?"           ;; 0-1 marks of extended 3rd class (vowel)
   "[\u0591-\u05AF\u05BD]*"           ;; 0-2 (3?) marks of 4th class (cantill.)
   "\\|"
   "\u05E9"                           ;; base (shin)
   "\u05BC?"                          ;; 0-1 marks of 1st class (dagesh)
   "[\u05C1\u05C2]?"                  ;; 0-1 marks of 2nd class (shin dot)
   "[\u05B0-\u05B9\u05BB\u05C7]?"     ;; 0-1 marks of 3rd class (vowel)
   "[\u0591-\u05AF\u05BD]*"           ;; 0-2 (3?) marks of 4th class (cantill.)
   "\\)")
  "Regexp matching a composable sequence of Hebrew characters.")

(set-char-table-range
 composition-function-table '(#x591 . #x5F4)
 (list (vector hebrew-composable-pattern 0 'font-shape-gstring)))