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Ensure that X selection convertors properly encode returned strings.

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Though not itself a regression, this bug was exposed by the support
for MULTIPLE selections, which is new to Emacs 24 (see Bug#11315).

* lisp/select.el (xselect--encode-string): New function, split from
xselect-convert-to-string.
(xselect-convert-to-string): Use it.
(xselect-convert-to-filename, xselect-convert-to-os)
(xselect-convert-to-host, xselect-convert-to-user): Ensure that
returned strings are properly encoded.
This commit is contained in:
Chong Yidong 2012-04-24 13:34:50 +08:00
parent 9be2fd9b4f
commit acb71f1dad
2 changed files with 34 additions and 22 deletions
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9
lisp/ChangeLog
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@ -1,3 +1,12 @@
2012-04-24 Chong Yidong <cyd@gnu.org>
* select.el (xselect--encode-string): New function, split from
xselect-convert-to-string.
(xselect-convert-to-string): Use it.
(xselect-convert-to-filename, xselect-convert-to-os)
(xselect-convert-to-host, xselect-convert-to-user): Ensure that
returned strings are properly encoded (Bug#11315).
2012-04-22 Chong Yidong <cyd@gnu.org>
* simple.el (delete-active-region): Move to killing custom group.

47
lisp/select.el
View File

@ -213,30 +213,25 @@ two markers or an overlay. Otherwise, it is nil."
(defun xselect--int-to-cons (n)
(cons (ash n -16) (logand n 65535)))
(defun xselect-convert-to-string (_selection type value)
(let (str coding)
;; Get the actual string from VALUE.
(cond ((stringp value)
(setq str value))
((setq value (xselect--selection-bounds value))
(with-current-buffer (nth 2 value)
(setq str (buffer-substring (nth 0 value)
(nth 1 value))))))
(when str
;; If TYPE is nil, this is a local request, thus return STR as
;; is. Otherwise, encode STR.
(if (not type)
str
(setq coding (or next-selection-coding-system selection-coding-system))
(defun xselect--encode-string (type str &optional can-modify)
(when str
;; If TYPE is nil, this is a local request; return STR as-is.
(if (null type)
str
;; Otherwise, encode STR.
(let ((coding (or next-selection-coding-system
selection-coding-system)))
(if coding
(setq coding (coding-system-base coding)))
(let ((inhibit-read-only t))
;; Suppress producing escape sequences for compositions.
;; But avoid modifying the string if it's a buffer name etc.
(unless can-modify (setq str (substring str 0)))
(remove-text-properties 0 (length str) '(composition nil) str)
;; TEXT is a polymorphic target. Select the actual type
;; from `UTF8_STRING', `COMPOUND_TEXT', `STRING', and
;; `C_STRING'.
(if (eq type 'TEXT)
;; TEXT is a polymorphic target. We must select the
;; actual type from `UTF8_STRING', `COMPOUND_TEXT',
;; `STRING', and `C_STRING'.
(if (not (multibyte-string-p str))
(setq type 'C_STRING)
(let (non-latin-1 non-unicode eight-bit)
@ -279,6 +274,14 @@ two markers or an overlay. Otherwise, it is nil."
(setq next-selection-coding-system nil)
(cons type str))))
(defun xselect-convert-to-string (_selection type value)
(let ((str (cond ((stringp value) value)
((setq value (xselect--selection-bounds value))
(with-current-buffer (nth 2 value)
(buffer-substring (nth 0 value)
(nth 1 value)))))))
(xselect--encode-string type str t)))
(defun xselect-convert-to-length (_selection _type value)
(let ((len (cond ((stringp value)
(length value))
@ -311,7 +314,7 @@ two markers or an overlay. Otherwise, it is nil."
(defun xselect-convert-to-filename (_selection _type value)
(when (setq value (xselect--selection-bounds value))
(buffer-file-name (nth 2 value))))
(xselect--encode-string 'TEXT (buffer-file-name (nth 2 value)))))
(defun xselect-convert-to-charpos (_selection _type value)
(when (setq value (xselect--selection-bounds value))
@ -337,13 +340,13 @@ two markers or an overlay. Otherwise, it is nil."
(xselect--int-to-cons (max beg end))))))))
(defun xselect-convert-to-os (_selection _type _size)
(symbol-name system-type))
(xselect--encode-string 'TEXT (symbol-name system-type)))
(defun xselect-convert-to-host (_selection _type _size)
(system-name))
(xselect--encode-string 'TEXT (system-name)))
(defun xselect-convert-to-user (_selection _type _size)
(user-full-name))
(xselect--encode-string 'TEXT (user-full-name)))
(defun xselect-convert-to-class (_selection _type _size)
"Convert selection to class.