Merge from emacs-24; up to 2012-12-23T17:06:58Z!eliz@gnu.org

[gnu-emacs] / lisp / select.el

diff --git a/lisp/select.el b/lisp/select.el
index 35c103d1c1505740d17f38a96a0cea0962826965..58fbe5f0f5119e257a57b7478cec8535d7c2d0b2 100644 (file)
--- a/lisp/select.el
+++ b/lisp/select.el
@@ -1,18 +1,16 @@
 ;;; select.el --- lisp portion of standard selection support
 
 ;;; select.el --- lisp portion of standard selection support
 

+;; Copyright (C) 1993-1994, 2001-2013 Free Software Foundation, Inc.
+

 ;; Maintainer: FSF
 ;; Keywords: internal
 
 ;; Maintainer: FSF
 ;; Keywords: internal
 

-;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007 Free Software Foundation, Inc.
-;; Based partially on earlier release by Lucid.
-

 ;; This file is part of GNU Emacs.
 
 ;; This file is part of GNU Emacs.
 

-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify

 ;; it under the terms of the GNU General Public License as published by
 ;; it under the terms of the GNU General Public License as published by

-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.

 
 ;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -20,17 +18,24 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License

-;; along with GNU Emacs; see the file COPYING.  If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

 
 ;;; Commentary:
 
 
 ;;; Commentary:
 

+;; Based partially on earlier release by Lucid.
+

 ;;; Code:
 
 ;;; Code:
 

-(defvar selection-coding-system nil
-  "Coding system for communicating with other X clients.
+(defcustom selection-coding-system nil
+  "Coding system for communicating with other programs.
+
+For MS-Windows and MS-DOS:
+When sending or receiving text via selection and clipboard, the text
+is encoded or decoded by this coding system.  The default value is
+the current system default encoding on 9x/Me, `utf-16le-dos'
+\(Unicode) on NT/W2K/XP, and `iso-latin-1-dos' on MS-DOS.

 
 

+For X Windows:

 When sending text via selection and clipboard, if the target
 data-type matches with the type of this coding system, it is used
 for encoding the text.  Otherwise (including the case that this
 When sending text via selection and clipboard, if the target
 data-type matches with the type of this coding system, it is used
 for encoding the text.  Otherwise (including the case that this


@@ -50,17 +55,28 @@ proper coding system is used according to the data-type as above.
 See also the documentation of the variable `x-select-request-type' how
 to control which data-type to request for receiving text.
 
 See also the documentation of the variable `x-select-request-type' how
 to control which data-type to request for receiving text.
 

-The default value is nil.")
+The default value is nil."
+  :type 'coding-system
+  :group 'mule
+  ;; Default was compound-text-with-extensions in 22.x (pre-unicode).
+  :version "23.1"
+  :set (lambda (symbol value)
+         (set-selection-coding-system value)
+         (set symbol value)))

 
 (defvar next-selection-coding-system nil
 
 (defvar next-selection-coding-system nil

-  "Coding system for the next communication with other X clients.
+  "Coding system for the next communication with other programs.

 Usually, `selection-coding-system' is used for communicating with
 Usually, `selection-coding-system' is used for communicating with

-other X clients.  But, if this variable is set, it is used for
-the next communication only.  After the communication, this
-variable is set to nil.")
+other programs (X Windows clients or MS Windows programs).  But, if this
+variable is set, it is used for the next communication only.
+After the communication, this variable is set to nil.")
+
+(declare-function x-get-selection-internal "xselect.c"
+                 (selection-symbol target-type &optional time-stamp terminal))
+
+;; Only declared obsolete in 23.3.
+(define-obsolete-function-alias 'x-selection 'x-get-selection "at least 19.34")

 
 

-;; This is for temporary compatibility with pre-release Emacs 19.
-(defalias 'x-selection 'x-get-selection)

 (defun x-get-selection (&optional type data-type)
   "Return the value of an X Windows selection.
 The argument TYPE (default `PRIMARY') says which selection,
 (defun x-get-selection (&optional type data-type)
   "Return the value of an X Windows selection.
 The argument TYPE (default `PRIMARY') says which selection,


@@ -83,14 +99,14 @@ in `selection-converter-alist', which see."
                       selection-coding-system
                       (cond ((eq data-type 'UTF8_STRING)
                              'utf-8)
                       selection-coding-system
                       (cond ((eq data-type 'UTF8_STRING)
                              'utf-8)

-                            ((eq data-type 'COMPOUND-TEXT)
+                            ((eq data-type 'COMPOUND_TEXT)

                              'compound-text-with-extensions)
                             ((eq data-type 'C_STRING)
                              nil)
                             ((eq data-type 'STRING)
                              'iso-8859-1)
                             (t
                              'compound-text-with-extensions)
                             ((eq data-type 'C_STRING)
                              nil)
                             ((eq data-type 'STRING)
                              'iso-8859-1)
                             (t

-                             (error "Unknow selection data type: %S" type))))
+                             (error "Unknown selection data type: %S" type))))

            data (if coding (decode-coding-string data coding)
                   (string-to-multibyte data)))
       (setq next-selection-coding-system nil)
            data (if coding (decode-coding-string data coding)
                   (string-to-multibyte data)))
       (setq next-selection-coding-system nil)


@@ -101,8 +117,13 @@ in `selection-converter-alist', which see."
   "Return text pasted to the clipboard."
   (x-get-selection-internal 'CLIPBOARD 'STRING))
 
   "Return text pasted to the clipboard."
   (x-get-selection-internal 'CLIPBOARD 'STRING))
 

+(declare-function x-own-selection-internal "xselect.c"
+                 (selection-name selection-value &optional frame))
+(declare-function x-disown-selection-internal "xselect.c"
+                 (selection &optional time terminal))
+

 (defun x-set-selection (type data)
 (defun x-set-selection (type data)

-  "Make an X Windows selection of type TYPE and value DATA.
+  "Make an X selection of type TYPE and value DATA.

 The argument TYPE (nil means `PRIMARY') says which selection, and
 DATA specifies the contents.  TYPE must be a symbol.  \(It can also
 be a string, which stands for the symbol with that name, but this
 The argument TYPE (nil means `PRIMARY') says which selection, and
 DATA specifies the contents.  TYPE must be a symbol.  \(It can also
 be a string, which stands for the symbol with that name, but this


@@ -121,13 +142,14 @@ The return value is DATA.
 
 Interactively, this command sets the primary selection.  Without
 prefix argument, it reads the selection in the minibuffer.  With
 
 Interactively, this command sets the primary selection.  Without
 prefix argument, it reads the selection in the minibuffer.  With

-prefix argument, it uses the text of the region as the selection value ."
+prefix argument, it uses the text of the region as the selection value.
+
+Note that on MS-Windows, primary and secondary selections set by Emacs
+are not available to other programs."

   (interactive (if (not current-prefix-arg)
                   (list 'PRIMARY (read-string "Set text for pasting: "))
                 (list 'PRIMARY (buffer-substring (region-beginning) (region-end)))))
   (interactive (if (not current-prefix-arg)
                   (list 'PRIMARY (read-string "Set text for pasting: "))
                 (list 'PRIMARY (buffer-substring (region-beginning) (region-end)))))

-  ;; This is for temporary compatibility with pre-release Emacs 19.
-  (if (stringp type)
-      (setq type (intern type)))
+  (if (stringp type) (setq type (intern type)))

   (or (x-valid-simple-selection-p data)
       (and (vectorp data)
           (let ((valid t)
   (or (x-valid-simple-selection-p data)
       (and (vectorp data)
           (let ((valid t)


@@ -145,166 +167,150 @@ prefix argument, it uses the text of the region as the selection value ."
   data)
 
 (defun x-valid-simple-selection-p (data)
   data)
 
 (defun x-valid-simple-selection-p (data)

-  (or (stringp data)
-      (symbolp data)
-      (integerp data)
-      (and (consp data)
-          (integerp (car data))
-          (or (integerp (cdr data))
-              (and (consp (cdr data))
-                   (integerp (car (cdr data))))))
-      (overlayp data)
+  (or (bufferp data)

       (and (consp data)
           (markerp (car data))
           (markerp (cdr data))
           (marker-buffer (car data))
       (and (consp data)
           (markerp (car data))
           (markerp (cdr data))
           (marker-buffer (car data))

-          (marker-buffer (cdr data))
-          (eq (marker-buffer (car data))
-              (marker-buffer (cdr data)))

           (buffer-name (marker-buffer (car data)))
           (buffer-name (marker-buffer (car data)))

-          (buffer-name (marker-buffer (cdr data))))))
-\f
-;;; Cut Buffer support
-
-(declare-function x-get-cut-buffer-internal "xselect.c")
-
-(defun x-get-cut-buffer (&optional which-one)
-  "Returns the value of one of the 8 X server cut-buffers.
-Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0.
-Cut buffers are considered obsolete; you should use selections instead."
-  (x-get-cut-buffer-internal
-   (if which-one
-       (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3
-             CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7]
-            which-one)
-     'CUT_BUFFER0)))
-
-(declare-function x-rotate-cut-buffers-internal "xselect.c")
-(declare-function x-store-cut-buffer-internal "xselect.c")
-
-(defun x-set-cut-buffer (string &optional push)
-  "Store STRING into the X server's primary cut buffer.
-If PUSH is non-nil, also rotate the cut buffers:
-this means the previous value of the primary cut buffer moves to the second
-cut buffer, and the second to the third, and so on (there are 8 buffers.)
-Cut buffers are considered obsolete; you should use selections instead."
-  (or (stringp string) (signal 'wrong-type-argument (list 'string string)))
-  (if push
-      (x-rotate-cut-buffers-internal 1))
-  (x-store-cut-buffer-internal 'CUT_BUFFER0 string))
-
+          (eq (marker-buffer (car data))
+              (marker-buffer (cdr data))))
+      (stringp data)
+      (and (overlayp data)
+          (overlay-buffer data)
+          (buffer-name (overlay-buffer data)))
+      (symbolp data)
+      (integerp data)))

 \f
 \f

-;;; Functions to convert the selection into various other selection types.
-;;; Every selection type that Emacs handles is implemented this way, except
-;;; for TIMESTAMP, which is a special case.
-
-(defun xselect-convert-to-string (selection type value)
-  (let (str coding)
-    ;; Get the actual string from VALUE.
-    (cond ((stringp value)
-          (setq str value))
-
-         ((overlayp value)
-          (save-excursion
-            (or (buffer-name (overlay-buffer value))
-                (error "selection is in a killed buffer"))
-            (set-buffer (overlay-buffer value))
-            (setq str (buffer-substring (overlay-start value)
-                                        (overlay-end value)))))
-         ((and (consp value)
-               (markerp (car value))
-               (markerp (cdr value)))
-          (or (eq (marker-buffer (car value)) (marker-buffer (cdr value)))
-              (signal 'error
-                      (list "markers must be in the same buffer"
-                            (car value) (cdr value))))
-          (save-excursion
-            (set-buffer (or (marker-buffer (car value))
-                            (error "selection is in a killed buffer")))
-            (setq str (buffer-substring (car value) (cdr 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))
+;; Functions to convert the selection into various other selection types.
+;; Every selection type that Emacs handles is implemented this way, except
+;; for TIMESTAMP, which is a special case.
+
+(defun xselect--selection-bounds (value)
+  "Return bounds of X selection value VALUE.
+The return value is a list (BEG END BUF) if VALUE is a cons of
+two markers or an overlay.  Otherwise, it is nil."
+  (cond ((bufferp value)
+        (with-current-buffer value
+          (when (mark t)
+            (list (mark t) (point) value))))
+       ((and (consp value)
+             (markerp (car value))
+             (markerp (cdr value)))
+        (when (and (marker-buffer (car value))
+                   (buffer-name (marker-buffer (car value)))
+                   (eq (marker-buffer (car value))
+                       (marker-buffer (cdr value))))
+          (list (marker-position (car value))
+                (marker-position (cdr value))
+                (marker-buffer (car value)))))
+       ((overlayp value)
+        (when (overlay-buffer value)
+          (list (overlay-start value)
+                (overlay-end value)
+                (overlay-buffer value))))))
+
+(defun xselect--int-to-cons (n)
+  (cons (ash n -16) (logand n 65535)))
+
+(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.
        (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)
          (remove-text-properties 0 (length str) '(composition nil) str)

-         (if (not (multibyte-string-p str))
-             ;; Don't have to encode unibyte string.
-             (setq type 'C_STRING)
-           (if (eq type 'TEXT)
-               ;; TEXT is a polimorphic target.  We must select the
-               ;; actual type from `UTF8_STRING', `COMPOUND_TEXT',
-               ;; `STRING', and `C_STRING'.
-               (let (non-latin-1 non-unicode eight-bit)
-                 (mapc #'(lambda (x)
-                           (if (>= x #x100)
-                               (if (< x #x110000)
-                                   (setq non-latin-1 t)
-                                 (if (< x #x3FFF80)
-                                     (setq non-unicode t)
-                                   (setq eight-bit t)))))
-                       str)
-                 (setq type (if non-unicode 'COMPOUND_TEXT
-                              (if non-latin-1 'UTF8_STRING
-                                (if eight-bit 'C_STRING 'STRING))))))
+         ;; For X selections, TEXT is a polymorphic target; choose
+         ;; the actual type from `UTF8_STRING', `COMPOUND_TEXT',
+         ;; `STRING', and `C_STRING'.  On Nextstep, always use UTF-8
+         ;; (see ns_string_to_pasteboard_internal in nsselect.m).
+         (when (eq type 'TEXT)

            (cond
            (cond

-            ((eq type 'UTF8_STRING)
-             (if (or (not coding)
-                     (not (eq (coding-system-type coding) 'utf-8)))
-                 (setq coding 'utf-8))
-             (setq str (encode-coding-string str coding)))
-
-            ((eq type 'STRING)
-             (if (or (not coding)
-                     (not (eq (coding-system-type coding) 'charset)))
-                 (setq coding 'iso-8859-1))
-             (setq str (encode-coding-string str coding)))
-
-            ((eq type 'COMPOUND_TEXT)
-             (if (or (not coding)
-                     (not (eq (coding-system-type coding) 'iso-2022)))
-                 (setq coding 'compound-text-with-extensions))
-             (setq str (encode-coding-string str coding)))
-
-            ((eq type 'C_STRING)
-             (setq str (string-make-unibyte str)))
-
+            ((featurep 'ns)
+             (setq type 'UTF8_STRING))
+            ((not (multibyte-string-p str))
+             (setq type 'C_STRING))

             (t
             (t

-             (error "Unknow selection type: %S" type))
-            ))))
+             (let (non-latin-1 non-unicode eight-bit)
+               (mapc #'(lambda (x)
+                         (if (>= x #x100)
+                             (if (< x #x110000)
+                                 (setq non-latin-1 t)
+                               (if (< x #x3FFF80)
+                                   (setq non-unicode t)
+                                 (setq eight-bit t)))))
+                     str)
+               (setq type (if (or non-unicode
+                                  (and
+                                   non-latin-1
+                                   ;; If a coding is specified for
+                                   ;; selection, and that is
+                                   ;; compatible with COMPOUND_TEXT,
+                                   ;; use it.
+                                   coding
+                                   (eq (coding-system-get coding :mime-charset)
+                                       'x-ctext)))
+                              'COMPOUND_TEXT
+                            (if non-latin-1 'UTF8_STRING
+                              (if eight-bit 'C_STRING
+                                'STRING))))))))
+         (cond
+          ((eq type 'UTF8_STRING)
+           (if (or (not coding)
+                   (not (eq (coding-system-type coding) 'utf-8)))
+               (setq coding 'utf-8))
+           (setq str (encode-coding-string str coding)))
+
+          ((eq type 'STRING)
+           (if (or (not coding)
+                   (not (eq (coding-system-type coding) 'charset)))
+               (setq coding 'iso-8859-1))
+           (setq str (encode-coding-string str coding)))
+
+          ((eq type 'COMPOUND_TEXT)
+           (if (or (not coding)
+                   (not (eq (coding-system-type coding) 'iso-2022)))
+               (setq coding 'compound-text-with-extensions))
+           (setq str (encode-coding-string str coding)))
+
+          ((eq type 'C_STRING)
+           (setq str (string-make-unibyte str)))
+
+          (t
+           (error "Unknown selection type: %S" type)))))

 
       (setq next-selection-coding-system nil)
       (cons type str))))
 
 
       (setq next-selection-coding-system nil)
       (cons type str))))
 

-
-(defun xselect-convert-to-length (selection type value)
-  (let ((value
-        (cond ((stringp value)
-               (length value))
-              ((overlayp value)
-               (abs (- (overlay-end value) (overlay-start value))))
-              ((and (consp value)
-                    (markerp (car value))
-                    (markerp (cdr value)))
-               (or (eq (marker-buffer (car value))
-                       (marker-buffer (cdr value)))
-                   (signal 'error
-                           (list "markers must be in the same buffer"
-                                 (car value) (cdr value))))
-               (abs (- (car value) (cdr value)))))))
-    (if value ; force it to be in 32-bit format.
-       (cons (ash value -16) (logand value 65535))
-      nil)))
-
-(defun xselect-convert-to-targets (selection type value)
+(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))
+                  ((setq value (xselect--selection-bounds value))
+                   (abs (- (nth 0 value) (nth 1 value)))))))
+    (if len
+       (xselect--int-to-cons len))))
+
+(defun xselect-convert-to-targets (_selection _type _value)

   ;; return a vector of atoms, but remove duplicates first.
   ;; return a vector of atoms, but remove duplicates first.

-  (let* ((all (cons 'TIMESTAMP (mapcar 'car selection-converter-alist)))
+  (let* ((all (cons 'TIMESTAMP
+                   (cons 'MULTIPLE
+                         (mapcar 'car selection-converter-alist))))

         (rest all))
     (while rest
       (cond ((memq (car rest) (cdr rest))
         (rest all))
     (while rest
       (cond ((memq (car rest) (cdr rest))


@@ -315,117 +321,77 @@ Cut buffers are considered obsolete; you should use selections instead."
             (setq rest (cdr rest)))))
     (apply 'vector all)))
 
             (setq rest (cdr rest)))))
     (apply 'vector all)))
 

-(defun xselect-convert-to-delete (selection type value)
+(defun xselect-convert-to-delete (selection _type _value)

   (x-disown-selection-internal selection)
   ;; A return value of nil means that we do not know how to do this conversion,
   ;; and replies with an "error".  A return value of NULL means that we have
   ;; done the conversion (and any side-effects) but have no value to return.
   'NULL)
 
   (x-disown-selection-internal selection)
   ;; A return value of nil means that we do not know how to do this conversion,
   ;; and replies with an "error".  A return value of NULL means that we have
   ;; done the conversion (and any side-effects) but have no value to return.
   'NULL)
 

-(defun xselect-convert-to-filename (selection type value)
-  (cond ((overlayp value)
-        (buffer-file-name (or (overlay-buffer value)
-                              (error "selection is in a killed buffer"))))
-       ((and (consp value)
-             (markerp (car value))
-             (markerp (cdr value)))
-        (buffer-file-name (or (marker-buffer (car value))
-                              (error "selection is in a killed buffer"))))
-       (t nil)))
-
-(defun xselect-convert-to-charpos (selection type value)
-  (let (a b tmp)
-    (cond ((cond ((overlayp value)
-                 (setq a (overlay-start value)
-                       b (overlay-end value)))
-                ((and (consp value)
-                      (markerp (car value))
-                      (markerp (cdr value)))
-                 (setq a (car value)
-                       b (cdr value))))
-          (setq a (1- a) b (1- b)) ; zero-based
-          (if (< b a) (setq tmp a a b b tmp))
-          (cons 'SPAN
-                (vector (cons (ash a -16) (logand a 65535))
-                        (cons (ash b -16) (logand b 65535))))))))
-
-(defun xselect-convert-to-lineno (selection type value)
-  (let (a b buf tmp)
-    (cond ((cond ((and (consp value)
-                      (markerp (car value))
-                      (markerp (cdr value)))
-                 (setq a (marker-position (car value))
-                       b (marker-position (cdr value))
-                       buf (marker-buffer (car value))))
-                ((overlayp value)
-                 (setq buf (overlay-buffer value)
-                       a (overlay-start value)
-                       b (overlay-end value)))
-                )
-          (save-excursion
-            (set-buffer buf)
-            (setq a (count-lines 1 a)
-                  b (count-lines 1 b)))
-          (if (< b a) (setq tmp a a b b tmp))
-          (cons 'SPAN
-                (vector (cons (ash a -16) (logand a 65535))
-                        (cons (ash b -16) (logand b 65535))))))))
-
-(defun xselect-convert-to-colno (selection type value)
-  (let (a b buf tmp)
-    (cond ((cond ((and (consp value)
-                      (markerp (car value))
-                      (markerp (cdr value)))
-                 (setq a (car value)
-                       b (cdr value)
-                       buf (marker-buffer a)))
-                ((overlayp value)
-                 (setq buf (overlay-buffer value)
-                       a (overlay-start value)
-                       b (overlay-end value)))
-                )
-          (save-excursion
-            (set-buffer buf)
-            (goto-char a)
-            (setq a (current-column))
-            (goto-char b)
-            (setq b (current-column)))
-          (if (< b a) (setq tmp a a b b tmp))
-          (cons 'SPAN
-                (vector (cons (ash a -16) (logand a 65535))
-                        (cons (ash b -16) (logand b 65535))))))))
-
-(defun xselect-convert-to-os (selection type size)
-  (symbol-name system-type))
-
-(defun xselect-convert-to-host (selection type size)
-  (system-name))
-
-(defun xselect-convert-to-user (selection type size)
-  (user-full-name))
-
-(defun xselect-convert-to-class (selection type size)
+(defun xselect-convert-to-filename (_selection _type value)
+  (when (setq value (xselect--selection-bounds 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))
+    (let ((beg (1- (nth 0 value))) ; zero-based
+         (end (1- (nth 1 value))))
+      (cons 'SPAN (vector (xselect--int-to-cons (min beg end))
+                         (xselect--int-to-cons (max beg end)))))))
+
+(defun xselect-convert-to-lineno (_selection _type value)
+  (when (setq value (xselect--selection-bounds value))
+    (with-current-buffer (nth 2 value)
+      (let ((beg (line-number-at-pos (nth 0 value)))
+           (end (line-number-at-pos (nth 1 value))))
+       (cons 'SPAN (vector (xselect--int-to-cons (min beg end))
+                           (xselect--int-to-cons (max beg end))))))))
+
+(defun xselect-convert-to-colno (_selection _type value)
+  (when (setq value (xselect--selection-bounds value))
+    (with-current-buffer (nth 2 value)
+      (let ((beg (progn (goto-char (nth 0 value)) (current-column)))
+           (end (progn (goto-char (nth 1 value)) (current-column))))
+       (cons 'SPAN (vector (xselect--int-to-cons (min beg end))
+                           (xselect--int-to-cons (max beg end))))))))
+
+(defun xselect-convert-to-os (_selection _type _size)
+  (xselect--encode-string 'TEXT (symbol-name system-type)))
+
+(defun xselect-convert-to-host (_selection _type _size)
+  (xselect--encode-string 'TEXT (system-name)))
+
+(defun xselect-convert-to-user (_selection _type _size)
+  (xselect--encode-string 'TEXT (user-full-name)))
+
+(defun xselect-convert-to-class (_selection _type _size)

   "Convert selection to class.
 This function returns the string \"Emacs\"."
   "Emacs")
 
 ;; We do not try to determine the name Emacs was invoked with,
 ;; because it is not clean for a program's behavior to depend on that.
   "Convert selection to class.
 This function returns the string \"Emacs\"."
   "Emacs")
 
 ;; We do not try to determine the name Emacs was invoked with,
 ;; because it is not clean for a program's behavior to depend on that.

-(defun xselect-convert-to-name (selection type size)
+(defun xselect-convert-to-name (_selection _type _size)

   "Convert selection to name.
 This function returns the string \"emacs\"."
   "emacs")
 
   "Convert selection to name.
 This function returns the string \"emacs\"."
   "emacs")
 

-(defun xselect-convert-to-integer (selection type value)
+(defun xselect-convert-to-integer (_selection _type value)

   (and (integerp value)
   (and (integerp value)

-       (cons (ash value -16) (logand value 65535))))
+       (xselect--int-to-cons value)))

 
 

-(defun xselect-convert-to-atom (selection type value)
+(defun xselect-convert-to-atom (_selection _type value)

   (and (symbolp value) value))
 
   (and (symbolp value) value))
 

-(defun xselect-convert-to-identity (selection type value) ; used internally
+(defun xselect-convert-to-identity (_selection _type value) ; used internally

   (vector value))
 
   (vector value))
 

+;; Null target that tells clipboard managers we support SAVE_TARGETS
+;; (see freedesktop.org Clipboard Manager spec).
+(defun xselect-convert-to-save-targets (selection _type _value)
+  (when (eq selection 'CLIPBOARD)
+    'NULL))
+

 (setq selection-converter-alist
       '((TEXT . xselect-convert-to-string)
        (COMPOUND_TEXT . xselect-convert-to-string)
 (setq selection-converter-alist
       '((TEXT . xselect-convert-to-string)
        (COMPOUND_TEXT . xselect-convert-to-string)


@@ -445,10 +411,9 @@ This function returns the string \"emacs\"."
        (NAME . xselect-convert-to-name)
        (ATOM . xselect-convert-to-atom)
        (INTEGER . xselect-convert-to-integer)
        (NAME . xselect-convert-to-name)
        (ATOM . xselect-convert-to-atom)
        (INTEGER . xselect-convert-to-integer)

-       (_EMACS_INTERNAL . xselect-convert-to-identity)
-       ))
+       (SAVE_TARGETS . xselect-convert-to-save-targets)
+       (_EMACS_INTERNAL . xselect-convert-to-identity)))

 
 (provide 'select)
 
 
 (provide 'select)
 

-;;; arch-tag: bb634f97-8a3b-4b0a-b940-f6e09982328c

 ;;; select.el ends here
 ;;; select.el ends here