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Code Issues Releases Activity

(x-select-utf8-or-ctext): Improve the strategy.

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This commit is contained in:
Kenichi Handa 2007-03-06 05:50:48 +00:00
parent 6f2426638b
commit a28a315a55
1 changed files with 15 additions and 8 deletions
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23
lisp/term/x-win.el
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@ -2198,11 +2198,12 @@ order until succeed.")
;; (1) If their lengthes are different, select the longer one. This
;; is because an X client may just cut off unsupported characters.
;;
;; (2) Otherwise, if the Nth character of CTEXT is an ASCII
;; character that is different from the Nth character of UTF8,
;; select UTF8. This is because an X client may replace unsupported
;; characters with some ASCII character (typically ` ' or `?') in
;; CTEXT.
;; (2) Otherwise, if they are different at Nth character, and that
;; of UTF8 is a Latin character and that of CTEXT belongs to a CJK
;; character set, select UTF8. Also select UTF8 if the Nth
;; character of UTF8 is non-ASCII where as that of CTEXT is ASCII.
;; This is because an X client may replace unsupported characters
;; with some ASCII character (typically ` ' or `?') in CTEXT.
;;
;; (3) Otherwise, select CTEXT. This is because legacy charsets are
;; better for the current Emacs, especially when the selection owner
@ -2217,10 +2218,16 @@ order until succeed.")
(if (/= len-utf8 len-ctext)
(if (> len-utf8 len-ctext) utf8 ctext)
(let ((result (compare-strings utf8 0 len-utf8 ctext 0 len-ctext)))
(if (or (eq result t)
(>= (aref ctext (1- (abs result))) 128))
(if (eq result t)
ctext
utf8)))))
(let ((utf8-char (aref utf8 (1- (abs result))))
(ctext-char (aref ctext (1- (abs result)))))
(if (or (and (aref (char-category-set utf8-char) ?l)
(aref (char-category-set ctext-char) ?C))
(and (>= utf8-char 128)
(< ctext-char 128)))
utf8
ctext)))))))
;; Get a selection value of type TYPE by calling x-get-selection with
;; an appropiate DATA-TYPE argument decidd by `x-select-request-type'.