NOISSUE change uvim folder name to mnv

Signed-off-by: Mehmet Samet Duman <yongdohyun@projecttick.org>

1 files changed, 4087 insertions, 0 deletions

diff --git a/mnv/src/clipboard.c b/mnv/src/clipboard.c
new file mode 100644
index 0000000000..447a520843
--- /dev/null
+++ b/mnv/src/clipboard.c
@@ -0,0 +1,4087 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * MNV - MNV is not Vim	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in MNV to read copying and usage conditions.
+ * Do ":help credits" in MNV to see a list of people who contributed.
+ * See README.txt for an overview of the MNV source code.
+ */
+
+/*
+ * clipboard.c: Functions to handle the clipboard. Additionally contains the
+ *		clipboard provider code, which is separate from the main
+ *		clipboard code.
+ */
+
+#include "mnv.h"
+
+#ifdef FEAT_CYGWIN_WIN32_CLIPBOARD
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include "winclip.pro"
+#endif
+
+// Functions for copying and pasting text between applications.
+// This is always included in a GUI version, but may also be included when the
+// clipboard and mouse is available to a terminal version such as xterm.
+// Note: there are some more functions in ops.c that handle selection stuff.
+//
+// Also note that the majority of functions here deal with the X 'primary'
+// (visible - for Visual mode use) selection, and only that. There are no
+// versions of these for the 'clipboard' selection, as Visual mode has no use
+// for them.
+
+
+#ifdef FEAT_CLIPBOARD_PROVIDER
+static int clip_provider_is_available(char_u *provider);
+#endif
+
+#if defined(FEAT_CLIPBOARD)
+
+# if defined(FEAT_WAYLAND_CLIPBOARD)
+
+#  include "wayland.h"
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+
+// Structures used for focus stealing
+typedef struct {
+    struct wl_shm_pool	*pool;
+    int			fd;
+
+    struct wl_buffer	*buffer;
+    bool		available;
+
+    int			width;
+    int			height;
+    int			stride;
+    int			size;
+} clip_wl_buffer_store_T;
+
+typedef struct {
+    void		    *user_data;
+    void		    (*on_focus)(void *data, uint32_t serial);
+
+    struct wl_surface	    *surface;
+    struct wl_keyboard	    *keyboard;
+
+    struct {
+	struct xdg_surface  *surface;
+	struct xdg_toplevel *toplevel;
+    } shell;
+
+    bool got_focus;
+} clip_wl_fs_surface_T; // fs = focus steal
+
+#  endif // FEAT_WAYLAND_CLIPBOARD_FS
+
+// Represents either the regular or primary selection
+typedef struct {
+    char_u		*contents;	// Non-null if we own selection,
+					// contains the data to send to other
+					// clients.
+    vwl_data_source_T	*source;	// Non-NULL if we own the selection,
+					// else NULL if we don't.
+    vwl_data_offer_T	*offer;		// Current offer for the selection
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    bool		requires_focus;	// If focus needs to be given to us to
+					// work
+#  endif
+    bool		own_success;	// Used by clip_wl_own_selection()
+    bool		available;	// If selection is ready to serve/use
+
+    // These may point to the same proxy as the other selection
+    vwl_data_device_manager_T	*manager;
+    vwl_data_device_T		*device;
+} clip_wl_selection_T;
+
+// Represents the clipboard for the global Wayland connection, for the chosen
+// seat (using the 'wl_seat' option)
+typedef struct {
+    vwl_seat_T *seat;
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    clip_wl_buffer_store_T *fs_buffer;
+#  endif
+
+    clip_wl_selection_T regular;
+    clip_wl_selection_T primary;
+} clip_wl_T;
+
+// Mime types we support sending and receiving
+// Mimes with a lower index in the array are prioritized first when we are
+// receiving data.
+static const char *supported_mimes[] = {
+    MNVENC_ATOM_NAME,
+    MNV_ATOM_NAME,
+    "text/plain;charset=utf-8",
+    "text/plain",
+    "UTF8_STRING",
+    "STRING",
+    "TEXT"
+};
+
+clip_wl_T clip_wl;
+
+static void
+clip_wl_receive_data(Clipboard_T *cbd, const char *mime_type, int fd);
+static void clip_wl_request_selection(Clipboard_T *cbd);
+static int clip_wl_own_selection(Clipboard_T *cbd);
+static void clip_wl_lose_selection(Clipboard_T *cbd);
+static void clip_wl_set_selection(Clipboard_T *cbd);
+
+#  if defined(USE_SYSTEM)
+static bool clip_wl_owner_exists(Clipboard_T *cbd);
+#  endif
+
+# endif // FEAT_WAYLAND_CLIPBOARD
+
+/*
+ * Selection stuff using Visual mode, for cutting and pasting text to other
+ * windows.
+ */
+
+/*
+ * Call this to initialise the clipboard.  Pass it FALSE if the clipboard code
+ * is included, but the clipboard can not be used, or TRUE if the clipboard can
+ * be used.  Eg unix may call this with FALSE, then call it again with TRUE if
+ * the GUI starts.
+ */
+    void
+clip_init(int can_use)
+{
+    Clipboard_T *cb;
+
+    cb = &clip_star;
+    for (;;)
+    {
+	// No need to init again if cbd is already available
+	if (can_use && cb->available)
+	    goto skip;
+
+	cb->available  = can_use;
+	cb->owned      = FALSE;
+	cb->start.lnum = 0;
+	cb->start.col  = 0;
+	cb->end.lnum   = 0;
+	cb->end.col    = 0;
+	cb->state      = SELECT_CLEARED;
+
+skip:
+	if (cb == &clip_plus)
+	    break;
+	cb = &clip_plus;
+    }
+}
+
+/*
+ * Check whether the VIsual area has changed, and if so try to become the owner
+ * of the selection, and free any old converted selection we may still have
+ * lying around.  If the VIsual mode has ended, make a copy of what was
+ * selected so we can still give it to others.	Will probably have to make sure
+ * this is called whenever VIsual mode is ended.
+ */
+    void
+clip_update_selection(Clipboard_T *clip)
+{
+    pos_T	    start, end;
+
+    // If visual mode is only due to a redo command ("."), then ignore it
+    if (!redo_VIsual_busy && VIsual_active && (State & MODE_NORMAL))
+    {
+	if (LT_POS(VIsual, curwin->w_cursor))
+	{
+	    start = VIsual;
+	    end = curwin->w_cursor;
+	    if (has_mbyte)
+		end.col += (*mb_ptr2len)(ml_get_cursor()) - 1;
+	}
+	else
+	{
+	    start = curwin->w_cursor;
+	    end = VIsual;
+	}
+	if (!EQUAL_POS(clip->start, start)
+		|| !EQUAL_POS(clip->end, end)
+		|| clip->vmode != VIsual_mode)
+	{
+	    clip_clear_selection(clip);
+	    clip->start = start;
+	    clip->end = end;
+	    clip->vmode = VIsual_mode;
+	    clip_free_selection(clip);
+	    clip_own_selection(clip);
+	    clip_gen_set_selection(clip);
+	}
+    }
+}
+
+    static int
+clip_gen_own_selection(Clipboard_T *cbd)
+{
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+	return clip_mch_own_selection(cbd);
+    else
+#  endif
+    {
+	if (clipmethod == CLIPMETHOD_WAYLAND)
+	{
+#  ifdef FEAT_WAYLAND_CLIPBOARD
+	    return clip_wl_own_selection(cbd);
+#  endif
+	}
+	else if (clipmethod == CLIPMETHOD_X11)
+	{
+#  ifdef FEAT_XCLIPBOARD
+	    return clip_xterm_own_selection(cbd);
+#  endif
+	}
+    }
+    return FAIL;
+# else
+    return clip_mch_own_selection(cbd);
+# endif
+}
+
+    void
+clip_own_selection(Clipboard_T *cbd)
+{
+    /*
+     * Also want to check somehow that we are reading from the keyboard rather
+     * than a mapping etc.
+     */
+# if defined(FEAT_X11) || defined(FEAT_WAYLAND_CLIPBOARD)
+    // Always own the selection, we might have lost it without being
+    // notified, e.g. during a ":sh" command.
+    if (cbd->available)
+    {
+	int was_owned = cbd->owned;
+
+	cbd->owned = (clip_gen_own_selection(cbd) == OK);
+	if (!was_owned && (cbd == &clip_star || cbd == &clip_plus))
+	{
+	    // May have to show a different kind of highlighting for the
+	    // selected area.  There is no specific redraw command for this,
+	    // just redraw all windows on the current buffer.
+	    if (cbd->owned
+		    && (get_real_state() == MODE_VISUAL
+					    || get_real_state() == MODE_SELECT)
+		    && (cbd == &clip_star ? clip_isautosel_star()
+						      : clip_isautosel_plus())
+		    && HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC))
+		redraw_curbuf_later(UPD_INVERTED_ALL);
+	}
+    }
+# else
+    // Only own the clipboard when we didn't own it yet.
+    if (!cbd->owned && cbd->available)
+	cbd->owned = (clip_gen_own_selection(cbd) == OK);
+# endif
+}
+
+    static void
+clip_gen_lose_selection(Clipboard_T *cbd)
+{
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+	clip_mch_lose_selection(cbd);
+    else
+#  endif
+    {
+	if (clipmethod == CLIPMETHOD_WAYLAND)
+	{
+#  ifdef FEAT_WAYLAND_CLIPBOARD
+	    clip_wl_lose_selection(cbd);
+#  endif
+	}
+	else if (clipmethod == CLIPMETHOD_X11)
+	{
+#  ifdef FEAT_XCLIPBOARD
+	    clip_xterm_lose_selection(cbd);
+#  endif
+	}
+    }
+# else
+    clip_mch_lose_selection(cbd);
+# endif
+}
+
+    void
+clip_lose_selection(Clipboard_T *cbd)
+{
+# ifdef FEAT_X11
+    int	    was_owned = cbd->owned;
+# endif
+    int     visual_selection = FALSE;
+
+    if (cbd == &clip_star || cbd == &clip_plus)
+	visual_selection = TRUE;
+
+    clip_free_selection(cbd);
+    cbd->owned = FALSE;
+    if (visual_selection)
+	clip_clear_selection(cbd);
+    clip_gen_lose_selection(cbd);
+# ifdef FEAT_X11
+    if (visual_selection)
+    {
+	// May have to show a different kind of highlighting for the selected
+	// area.  There is no specific redraw command for this, just redraw all
+	// windows on the current buffer.
+	if (was_owned
+		&& (get_real_state() == MODE_VISUAL
+		    || get_real_state() == MODE_SELECT)
+		&& (cbd == &clip_star ?
+		    clip_isautosel_star() : clip_isautosel_plus())
+		&& HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)
+		&& !exiting)
+	{
+	    update_curbuf(UPD_INVERTED_ALL);
+	    setcursor();
+	    cursor_on();
+	    out_flush_cursor(TRUE, FALSE);
+	}
+    }
+# endif
+}
+
+    static void
+clip_copy_selection(Clipboard_T *clip)
+{
+    if (VIsual_active && (State & MODE_NORMAL) && clip->available)
+    {
+	clip_update_selection(clip);
+	clip_free_selection(clip);
+	clip_own_selection(clip);
+	if (clip->owned)
+	    clip_get_selection(clip);
+	clip_gen_set_selection(clip);
+    }
+}
+
+/*
+ * Save and restore clip_unnamed before doing possibly many changes. This
+ * prevents accessing the clipboard very often which might slow down MNV
+ * considerably.
+ */
+static int global_change_count = 0; // if set, inside a start_global_changes
+static int clipboard_needs_update = FALSE; // clipboard needs to be updated
+static int clip_did_set_selection = TRUE;
+
+/*
+ * Save clip_unnamed and reset it.
+ */
+    void
+start_global_changes(void)
+{
+    if (++global_change_count > 1)
+	return;
+    clip_unnamed_saved = clip_unnamed;
+    clipboard_needs_update = FALSE;
+
+    if (clip_did_set_selection)
+    {
+	clip_unnamed = 0;
+	clip_did_set_selection = FALSE;
+    }
+}
+
+/*
+ * Return TRUE if setting the clipboard was postponed, it already contains the
+ * right text.
+ */
+    static int
+is_clipboard_needs_update(void)
+{
+    return clipboard_needs_update;
+}
+
+/*
+ * Restore clip_unnamed and set the selection when needed.
+ */
+    void
+end_global_changes(void)
+{
+    if (--global_change_count > 0)
+	// recursive
+	return;
+    if (!clip_did_set_selection)
+    {
+	clip_did_set_selection = TRUE;
+	clip_unnamed = clip_unnamed_saved;
+	clip_unnamed_saved = 0;
+	if (clipboard_needs_update)
+	{
+	    // only store something in the clipboard,
+	    // if we have yanked anything to it
+	    if (clip_unnamed & CLIP_UNNAMED)
+	    {
+		clip_own_selection(&clip_star);
+		clip_gen_set_selection(&clip_star);
+	    }
+	    if (clip_unnamed & CLIP_UNNAMED_PLUS)
+	    {
+		clip_own_selection(&clip_plus);
+		clip_gen_set_selection(&clip_plus);
+	    }
+	}
+    }
+    clipboard_needs_update = FALSE;
+}
+
+/*
+ * Called when Visual mode is ended: update the selection.
+ */
+    void
+clip_auto_select(void)
+{
+    if (clip_isautosel_star())
+	clip_copy_selection(&clip_star);
+    if (clip_isautosel_plus())
+	clip_copy_selection(&clip_plus);
+}
+
+/*
+ * Return TRUE if automatic selection of Visual area is desired for the *
+ * register.
+ */
+    int
+clip_isautosel_star(void)
+{
+# ifdef FEAT_CLIPBOARD_PROVIDER
+    if (clipmethod == CLIPMETHOD_PROVIDER)
+	return false;
+# endif
+# ifdef FEAT_GUI
+    if (gui.in_use)
+	return mnv_strchr(p_go, GO_ASEL) != NULL
+	    && mnv_strchr(p_go, GO_ASELPLUS) == NULL;
+# endif
+    return clip_autoselect_star;
+}
+
+/*
+ * Return TRUE if automatic selection of Visual area is desired for the +
+ * register.
+ */
+    int
+clip_isautosel_plus(void)
+{
+# ifdef FEAT_CLIPBOARD_PROVIDER
+    if (clipmethod == CLIPMETHOD_PROVIDER)
+	return false;
+# endif
+# ifdef FEAT_GUI
+    if (gui.in_use)
+	return mnv_strchr(p_go, GO_ASELPLUS) != NULL;
+# endif
+    return clip_autoselect_plus;
+}
+
+
+/*
+ * Stuff for general mouse selection, without using Visual mode.
+ */
+
+/*
+ * Compare two screen positions ala strcmp()
+ */
+    static int
+clip_compare_pos(
+    int		row1,
+    int		col1,
+    int		row2,
+    int		col2)
+{
+    if (row1 > row2) return(1);
+    if (row1 < row2) return(-1);
+    if (col1 > col2) return(1);
+    if (col1 < col2) return(-1);
+    return(0);
+}
+
+// "how" flags for clip_invert_area()
+# define CLIP_CLEAR	1
+# define CLIP_SET	2
+# define CLIP_TOGGLE	3
+
+/*
+ * Invert or un-invert a rectangle of the screen.
+ * "invert" is true if the result is inverted.
+ */
+    static void
+clip_invert_rectangle(
+	Clipboard_T	*cbd UNUSED,
+	int		row_arg,
+	int		col_arg,
+	int		height_arg,
+	int		width_arg,
+	int		invert)
+{
+    int		row = row_arg;
+    int		col = col_arg;
+    int		height = height_arg;
+    int		width = width_arg;
+
+# ifdef FEAT_PROP_POPUP
+    // this goes on top of all popup windows
+    screen_zindex = CLIP_ZINDEX;
+
+    if (col < cbd->min_col)
+    {
+	width -= cbd->min_col - col;
+	col = cbd->min_col;
+    }
+    if (width > cbd->max_col - col)
+	width = cbd->max_col - col;
+    if (row < cbd->min_row)
+    {
+	height -= cbd->min_row - row;
+	row = cbd->min_row;
+    }
+    if (height > cbd->max_row - row + 1)
+	height = cbd->max_row - row + 1;
+# endif
+# ifdef FEAT_GUI
+    if (gui.in_use)
+	gui_mch_invert_rectangle(row, col, height, width);
+    else
+# endif
+	screen_draw_rectangle(row, col, height, width, invert);
+# ifdef FEAT_PROP_POPUP
+    screen_zindex = 0;
+# endif
+}
+
+/*
+ * Invert a region of the display between a starting and ending row and column
+ * Values for "how":
+ * CLIP_CLEAR:  undo inversion
+ * CLIP_SET:    set inversion
+ * CLIP_TOGGLE: set inversion if pos1 < pos2, undo inversion otherwise.
+ * 0: invert (GUI only).
+ */
+    static void
+clip_invert_area(
+	Clipboard_T	*cbd,
+	int		row1,
+	int		col1,
+	int		row2,
+	int		col2,
+	int		how)
+{
+    int		invert = FALSE;
+    int		max_col;
+
+# ifdef FEAT_PROP_POPUP
+    max_col = cbd->max_col - 1;
+# else
+    max_col = Columns - 1;
+# endif
+
+    if (how == CLIP_SET)
+	invert = TRUE;
+
+    // Swap the from and to positions so the from is always before
+    if (clip_compare_pos(row1, col1, row2, col2) > 0)
+    {
+	int tmp_row, tmp_col;
+
+	tmp_row = row1;
+	tmp_col = col1;
+	row1	= row2;
+	col1	= col2;
+	row2	= tmp_row;
+	col2	= tmp_col;
+    }
+    else if (how == CLIP_TOGGLE)
+	invert = TRUE;
+
+    // If all on the same line, do it the easy way
+    if (row1 == row2)
+    {
+	clip_invert_rectangle(cbd, row1, col1, 1, col2 - col1, invert);
+    }
+    else
+    {
+	// Handle a piece of the first line
+	if (col1 > 0)
+	{
+	    clip_invert_rectangle(cbd, row1, col1, 1,
+						  (int)Columns - col1, invert);
+	    row1++;
+	}
+
+	// Handle a piece of the last line
+	if (col2 < max_col)
+	{
+	    clip_invert_rectangle(cbd, row2, 0, 1, col2, invert);
+	    row2--;
+	}
+
+	// Handle the rectangle that's left
+	if (row2 >= row1)
+	    clip_invert_rectangle(cbd, row1, 0, row2 - row1 + 1,
+							 (int)Columns, invert);
+    }
+}
+
+/*
+ * Start, continue or end a modeless selection.  Used when editing the
+ * command-line, in the cmdline window and when the mouse is in a popup window.
+ */
+    void
+clip_modeless(int button, int is_click, int is_drag)
+{
+    int		repeat;
+
+    repeat = ((clip_star.mode == SELECT_MODE_CHAR
+		|| clip_star.mode == SELECT_MODE_LINE)
+					      && (mod_mask & MOD_MASK_2CLICK))
+	    || (clip_star.mode == SELECT_MODE_WORD
+					     && (mod_mask & MOD_MASK_3CLICK));
+    if (is_click && button == MOUSE_RIGHT)
+    {
+	// Right mouse button: If there was no selection, start one.
+	// Otherwise extend the existing selection.
+	if (clip_star.state == SELECT_CLEARED)
+	    clip_start_selection(mouse_col, mouse_row, FALSE);
+	clip_process_selection(button, mouse_col, mouse_row, repeat);
+    }
+    else if (is_click)
+	clip_start_selection(mouse_col, mouse_row, repeat);
+    else if (is_drag)
+    {
+	// Don't try extending a selection if there isn't one.  Happens when
+	// button-down is in the cmdline and them moving mouse upwards.
+	if (clip_star.state != SELECT_CLEARED)
+	    clip_process_selection(button, mouse_col, mouse_row, repeat);
+    }
+    else // release
+	clip_process_selection(MOUSE_RELEASE, mouse_col, mouse_row, FALSE);
+}
+
+/*
+ * Update the currently selected region by adding and/or subtracting from the
+ * beginning or end and inverting the changed area(s).
+ */
+    static void
+clip_update_modeless_selection(
+    Clipboard_T    *cb,
+    int		    row1,
+    int		    col1,
+    int		    row2,
+    int		    col2)
+{
+    // See if we changed at the beginning of the selection
+    if (row1 != cb->start.lnum || col1 != (int)cb->start.col)
+    {
+	clip_invert_area(cb, row1, col1, (int)cb->start.lnum, cb->start.col,
+								 CLIP_TOGGLE);
+	cb->start.lnum = row1;
+	cb->start.col  = col1;
+    }
+
+    // See if we changed at the end of the selection
+    if (row2 != cb->end.lnum || col2 != (int)cb->end.col)
+    {
+	clip_invert_area(cb, (int)cb->end.lnum, cb->end.col, row2, col2,
+								 CLIP_TOGGLE);
+	cb->end.lnum = row2;
+	cb->end.col  = col2;
+    }
+}
+
+/*
+ * Find the starting and ending positions of the word at the given row and
+ * column.  Only white-separated words are recognized here.
+ */
+# define CHAR_CLASS(c)	(c <= ' ' ? ' ' : mnv_iswordc(c))
+
+    static void
+clip_get_word_boundaries(Clipboard_T *cb, int row, int col)
+{
+    int		start_class;
+    int		temp_col;
+    char_u	*p;
+    int		mboff;
+
+    if (row >= screen_Rows || col >= screen_Columns || ScreenLines == NULL)
+	return;
+
+    p = ScreenLines + LineOffset[row];
+    // Correct for starting in the right half of a double-wide char
+    if (enc_dbcs != 0)
+	col -= dbcs_screen_head_off(p, p + col);
+    else if (enc_utf8 && p[col] == 0)
+	--col;
+    start_class = CHAR_CLASS(p[col]);
+
+    temp_col = col;
+    for ( ; temp_col > 0; temp_col--)
+	if (enc_dbcs != 0
+		   && (mboff = dbcs_screen_head_off(p, p + temp_col - 1)) > 0)
+	    temp_col -= mboff;
+	else if (CHAR_CLASS(p[temp_col - 1]) != start_class
+		&& !(enc_utf8 && p[temp_col - 1] == 0))
+	    break;
+    cb->word_start_col = temp_col;
+
+    temp_col = col;
+    for ( ; temp_col < screen_Columns; temp_col++)
+	if (enc_dbcs != 0 && dbcs_ptr2cells(p + temp_col) == 2)
+	    ++temp_col;
+	else if (CHAR_CLASS(p[temp_col]) != start_class
+		&& !(enc_utf8 && p[temp_col] == 0))
+	    break;
+    cb->word_end_col = temp_col;
+}
+
+/*
+ * Find the column position for the last non-whitespace character on the given
+ * line at or before start_col.
+ */
+    static int
+clip_get_line_end(Clipboard_T *cbd UNUSED, int row)
+{
+    int	    i;
+
+    if (row >= screen_Rows || ScreenLines == NULL)
+	return 0;
+    for (i =
+# ifdef FEAT_PROP_POPUP
+	    cbd->max_col;
+# else
+	    screen_Columns;
+# endif
+			    i > 0; i--)
+	if (ScreenLines[LineOffset[row] + i - 1] != ' ')
+	    break;
+    return i;
+}
+
+/*
+ * Start the selection
+ */
+    void
+clip_start_selection(int col, int row, int repeated_click)
+{
+    Clipboard_T	*cb = &clip_star;
+# ifdef FEAT_PROP_POPUP
+    win_T	*wp;
+    int		row_cp = row;
+    int		col_cp = col;
+
+    wp = mouse_find_win(&row_cp, &col_cp, FIND_POPUP);
+    if (wp != NULL && WIN_IS_POPUP(wp)
+				  && popup_is_in_scrollbar(wp, row_cp, col_cp))
+	// click or double click in scrollbar does not start a selection
+	return;
+# endif
+
+    if (cb->state == SELECT_DONE)
+	clip_clear_selection(cb);
+
+    row = check_row(row);
+    col = check_col(col);
+    col = mb_fix_col(col, row);
+
+    cb->start.lnum  = row;
+    cb->start.col   = col;
+    cb->end	    = cb->start;
+    cb->origin_row  = (short_u)cb->start.lnum;
+    cb->state	    = SELECT_IN_PROGRESS;
+# ifdef FEAT_PROP_POPUP
+    if (wp != NULL && WIN_IS_POPUP(wp))
+    {
+	// Click in a popup window restricts selection to that window,
+	// excluding the border.
+	cb->min_col = wp->w_wincol + wp->w_popup_border[3];
+	cb->max_col = wp->w_wincol + popup_width(wp)
+				 - wp->w_popup_border[1] - wp->w_has_scrollbar;
+	if (cb->max_col > screen_Columns)
+	    cb->max_col = screen_Columns;
+	cb->min_row = wp->w_winrow + wp->w_popup_border[0];
+	cb->max_row = wp->w_winrow + popup_height(wp) - 1
+						   - wp->w_popup_border[2];
+    }
+    else
+    {
+	cb->min_col = 0;
+	cb->max_col = screen_Columns;
+	cb->min_row = 0;
+	cb->max_row = screen_Rows;
+    }
+# endif
+
+    if (repeated_click)
+    {
+	if (++cb->mode > SELECT_MODE_LINE)
+	    cb->mode = SELECT_MODE_CHAR;
+    }
+    else
+	cb->mode = SELECT_MODE_CHAR;
+
+# ifdef FEAT_GUI
+    // clear the cursor until the selection is made
+    if (gui.in_use)
+	gui_undraw_cursor();
+# endif
+
+    switch (cb->mode)
+    {
+	case SELECT_MODE_CHAR:
+	    cb->origin_start_col = cb->start.col;
+	    cb->word_end_col = clip_get_line_end(cb, (int)cb->start.lnum);
+	    break;
+
+	case SELECT_MODE_WORD:
+	    clip_get_word_boundaries(cb, (int)cb->start.lnum, cb->start.col);
+	    cb->origin_start_col = cb->word_start_col;
+	    cb->origin_end_col	 = cb->word_end_col;
+
+	    clip_invert_area(cb, (int)cb->start.lnum, cb->word_start_col,
+			    (int)cb->end.lnum, cb->word_end_col, CLIP_SET);
+	    cb->start.col = cb->word_start_col;
+	    cb->end.col   = cb->word_end_col;
+	    break;
+
+	case SELECT_MODE_LINE:
+	    clip_invert_area(cb, (int)cb->start.lnum, 0, (int)cb->start.lnum,
+			    (int)Columns, CLIP_SET);
+	    cb->start.col = 0;
+	    cb->end.col   = Columns;
+	    break;
+    }
+
+    cb->prev = cb->start;
+
+# ifdef DEBUG_SELECTION
+    printf("Selection started at (%ld,%d)\n", cb->start.lnum, cb->start.col);
+# endif
+}
+
+/*
+ * Continue processing the selection
+ */
+    void
+clip_process_selection(
+    int		button,
+    int		col,
+    int		row,
+    int_u	repeated_click)
+{
+    Clipboard_T	*cb = &clip_star;
+    int		diff;
+    int		slen = 1;	// cursor shape width
+
+    if (button == MOUSE_RELEASE)
+    {
+	if (cb->state != SELECT_IN_PROGRESS)
+	    return;
+
+	// Check to make sure we have something selected
+	if (cb->start.lnum == cb->end.lnum && cb->start.col == cb->end.col)
+	{
+# ifdef FEAT_GUI
+	    if (gui.in_use)
+		gui_update_cursor(FALSE, FALSE);
+# endif
+	    cb->state = SELECT_CLEARED;
+	    return;
+	}
+
+# ifdef DEBUG_SELECTION
+	printf("Selection ended: (%ld,%d) to (%ld,%d)\n", cb->start.lnum,
+		cb->start.col, cb->end.lnum, cb->end.col);
+# endif
+	if (clip_isautosel_star() || clip_isautosel_plus()
+		|| (
+# ifdef FEAT_GUI
+		    gui.in_use ? (mnv_strchr(p_go, GO_ASELML) != NULL) :
+# endif
+		    clip_autoselectml))
+	    clip_copy_modeless_selection(FALSE);
+# ifdef FEAT_GUI
+	if (gui.in_use)
+	    gui_update_cursor(FALSE, FALSE);
+# endif
+
+	cb->state = SELECT_DONE;
+	return;
+    }
+
+    row = check_row(row);
+    col = check_col(col);
+    col = mb_fix_col(col, row);
+
+    if (col == (int)cb->prev.col && row == cb->prev.lnum && !repeated_click)
+	return;
+
+    /*
+     * When extending the selection with the right mouse button, swap the
+     * start and end if the position is before half the selection
+     */
+    if (cb->state == SELECT_DONE && button == MOUSE_RIGHT)
+    {
+	/*
+	 * If the click is before the start, or the click is inside the
+	 * selection and the start is the closest side, set the origin to the
+	 * end of the selection.
+	 */
+	if (clip_compare_pos(row, col, (int)cb->start.lnum, cb->start.col) < 0
+		|| (clip_compare_pos(row, col,
+					   (int)cb->end.lnum, cb->end.col) < 0
+		    && (((cb->start.lnum == cb->end.lnum
+			    && cb->end.col - col > col - cb->start.col))
+			|| ((diff = (cb->end.lnum - row) -
+						   (row - cb->start.lnum)) > 0
+			    || (diff == 0 && col < (int)(cb->start.col +
+							 cb->end.col) / 2)))))
+	{
+	    cb->origin_row = (short_u)cb->end.lnum;
+	    cb->origin_start_col = cb->end.col - 1;
+	    cb->origin_end_col = cb->end.col;
+	}
+	else
+	{
+	    cb->origin_row = (short_u)cb->start.lnum;
+	    cb->origin_start_col = cb->start.col;
+	    cb->origin_end_col = cb->start.col;
+	}
+	if (cb->mode == SELECT_MODE_WORD && !repeated_click)
+	    cb->mode = SELECT_MODE_CHAR;
+    }
+
+    // set state, for when using the right mouse button
+    cb->state = SELECT_IN_PROGRESS;
+
+# ifdef DEBUG_SELECTION
+    printf("Selection extending to (%d,%d)\n", row, col);
+# endif
+
+    if (repeated_click && ++cb->mode > SELECT_MODE_LINE)
+	cb->mode = SELECT_MODE_CHAR;
+
+    switch (cb->mode)
+    {
+	case SELECT_MODE_CHAR:
+	    // If we're on a different line, find where the line ends
+	    if (row != cb->prev.lnum)
+		cb->word_end_col = clip_get_line_end(cb, row);
+
+	    // See if we are before or after the origin of the selection
+	    if (clip_compare_pos(row, col, cb->origin_row,
+						   cb->origin_start_col) >= 0)
+	    {
+		if (col >= (int)cb->word_end_col)
+		    clip_update_modeless_selection(cb, cb->origin_row,
+			    cb->origin_start_col, row, (int)Columns);
+		else
+		{
+		    if (has_mbyte && mb_lefthalve(row, col))
+			slen = 2;
+		    clip_update_modeless_selection(cb, cb->origin_row,
+			    cb->origin_start_col, row, col + slen);
+		}
+	    }
+	    else
+	    {
+		if (has_mbyte
+			&& mb_lefthalve(cb->origin_row, cb->origin_start_col))
+		    slen = 2;
+		if (col >= (int)cb->word_end_col)
+		    clip_update_modeless_selection(cb, row, cb->word_end_col,
+			    cb->origin_row, cb->origin_start_col + slen);
+		else
+		    clip_update_modeless_selection(cb, row, col,
+			    cb->origin_row, cb->origin_start_col + slen);
+	    }
+	    break;
+
+	case SELECT_MODE_WORD:
+	    // If we are still within the same word, do nothing
+	    if (row == cb->prev.lnum && col >= (int)cb->word_start_col
+		    && col < (int)cb->word_end_col && !repeated_click)
+		return;
+
+	    // Get new word boundaries
+	    clip_get_word_boundaries(cb, row, col);
+
+	    // Handle being after the origin point of selection
+	    if (clip_compare_pos(row, col, cb->origin_row,
+		    cb->origin_start_col) >= 0)
+		clip_update_modeless_selection(cb, cb->origin_row,
+			cb->origin_start_col, row, cb->word_end_col);
+	    else
+		clip_update_modeless_selection(cb, row, cb->word_start_col,
+			cb->origin_row, cb->origin_end_col);
+	    break;
+
+	case SELECT_MODE_LINE:
+	    if (row == cb->prev.lnum && !repeated_click)
+		return;
+
+	    if (clip_compare_pos(row, col, cb->origin_row,
+		    cb->origin_start_col) >= 0)
+		clip_update_modeless_selection(cb, cb->origin_row, 0, row,
+			(int)Columns);
+	    else
+		clip_update_modeless_selection(cb, row, 0, cb->origin_row,
+			(int)Columns);
+	    break;
+    }
+
+    cb->prev.lnum = row;
+    cb->prev.col  = col;
+
+# ifdef DEBUG_SELECTION
+	printf("Selection is: (%ld,%d) to (%ld,%d)\n", cb->start.lnum,
+		cb->start.col, cb->end.lnum, cb->end.col);
+# endif
+}
+
+# if defined(FEAT_GUI)
+/*
+ * Redraw part of the selection if character at "row,col" is inside of it.
+ * Only used for the GUI.
+ */
+    void
+clip_may_redraw_selection(int row, int col, int len)
+{
+    int		start = col;
+    int		end = col + len;
+
+    if (clip_star.state != SELECT_CLEARED
+	    && row >= clip_star.start.lnum
+	    && row <= clip_star.end.lnum)
+    {
+	if (row == clip_star.start.lnum && start < (int)clip_star.start.col)
+	    start = clip_star.start.col;
+	if (row == clip_star.end.lnum && end > (int)clip_star.end.col)
+	    end = clip_star.end.col;
+	if (end > start)
+	    clip_invert_area(&clip_star, row, start, row, end, 0);
+    }
+}
+# endif
+
+/*
+ * Called from outside to clear selected region from the display
+ */
+    void
+clip_clear_selection(Clipboard_T *cbd)
+{
+
+    if (cbd->state == SELECT_CLEARED)
+	return;
+
+    clip_invert_area(cbd, (int)cbd->start.lnum, cbd->start.col,
+				 (int)cbd->end.lnum, cbd->end.col, CLIP_CLEAR);
+    cbd->state = SELECT_CLEARED;
+}
+
+/*
+ * Clear the selection if any lines from "row1" to "row2" are inside of it.
+ */
+    void
+clip_may_clear_selection(int row1, int row2)
+{
+    if (clip_star.state == SELECT_DONE
+	    && row2 >= clip_star.start.lnum
+	    && row1 <= clip_star.end.lnum)
+	clip_clear_selection(&clip_star);
+}
+
+/*
+ * Called before the screen is scrolled up or down.  Adjusts the line numbers
+ * of the selection.  Call with big number when clearing the screen.
+ */
+    void
+clip_scroll_selection(
+    int	    rows)		// negative for scroll down
+{
+    int	    lnum;
+
+    if (clip_star.state == SELECT_CLEARED)
+	return;
+
+    lnum = clip_star.start.lnum - rows;
+    if (lnum <= 0)
+	clip_star.start.lnum = 0;
+    else if (lnum >= screen_Rows)	// scrolled off of the screen
+	clip_star.state = SELECT_CLEARED;
+    else
+	clip_star.start.lnum = lnum;
+
+    lnum = clip_star.end.lnum - rows;
+    if (lnum < 0)			// scrolled off of the screen
+	clip_star.state = SELECT_CLEARED;
+    else if (lnum >= screen_Rows)
+	clip_star.end.lnum = screen_Rows - 1;
+    else
+	clip_star.end.lnum = lnum;
+}
+
+/*
+ * Copy the currently selected area into the '*' or '+' register so it will be
+ * available for pasting.
+ * When "both" is TRUE also copy to the other register.
+ */
+    void
+clip_copy_modeless_selection(int both UNUSED)
+{
+    // The info for the modeless selection is stored in '*' register, however if
+    // we are using the '+' register for modeless autoselect, we copy to
+    // clip_plus instead while using the info in clip_star.
+    Clipboard_T *cbd = clip_isautosel_plus() ? &clip_plus : &clip_star;
+    char_u	*buffer;
+    char_u	*bufp;
+    int		row;
+    int		start_col;
+    int		end_col;
+    int		line_end_col;
+    int		add_newline_flag = FALSE;
+    int		len;
+    char_u	*p;
+    int		row1 = clip_star.start.lnum;
+    int		col1 = clip_star.start.col;
+    int		row2 = clip_star.end.lnum;
+    int		col2 = clip_star.end.col;
+
+    // Can't use ScreenLines unless initialized
+    if (ScreenLines == NULL)
+	return;
+
+    /*
+     * Make sure row1 <= row2, and if row1 == row2 that col1 <= col2.
+     */
+    if (row1 > row2)
+    {
+	row = row1; row1 = row2; row2 = row;
+	row = col1; col1 = col2; col2 = row;
+    }
+    else if (row1 == row2 && col1 > col2)
+    {
+	row = col1; col1 = col2; col2 = row;
+    }
+# ifdef FEAT_PROP_POPUP
+    if (col1 < clip_star.min_col)
+	col1 = clip_star.min_col;
+    if (col2 > clip_star.max_col)
+	col2 = clip_star.max_col;
+    if (row1 > clip_star.max_row || row2 < clip_star.min_row)
+	return;
+    if (row1 < clip_star.min_row)
+	row1 = clip_star.min_row;
+    if (row2 > clip_star.max_row)
+	row2 = clip_star.max_row;
+# endif
+    // correct starting point for being on right half of double-wide char
+    p = ScreenLines + LineOffset[row1];
+    if (enc_dbcs != 0)
+	col1 -= (*mb_head_off)(p, p + col1);
+    else if (enc_utf8 && p[col1] == 0)
+	--col1;
+
+    // Create a temporary buffer for storing the text
+    len = (row2 - row1 + 1) * Columns + 1;
+    if (enc_dbcs != 0)
+	len *= 2;	// max. 2 bytes per display cell
+    else if (enc_utf8)
+	len *= MB_MAXBYTES;
+    buffer = alloc(len);
+    if (buffer == NULL)	    // out of memory
+	return;
+
+    // Process each row in the selection
+    for (bufp = buffer, row = row1; row <= row2; row++)
+    {
+	if (row == row1)
+	    start_col = col1;
+	else
+# ifdef FEAT_PROP_POPUP
+	    start_col = clip_star.min_col;
+# else
+	    start_col = 0;
+# endif
+
+	if (row == row2)
+	    end_col = col2;
+	else
+# ifdef FEAT_PROP_POPUP
+	    end_col = clip_star.max_col;
+# else
+	    end_col = Columns;
+# endif
+
+	line_end_col = clip_get_line_end(&clip_star, row);
+
+	// See if we need to nuke some trailing whitespace
+	if (end_col >=
+# ifdef FEAT_PROP_POPUP
+		clip_star.max_col
+# else
+		Columns
+# endif
+		    && (row < row2 || end_col > line_end_col))
+	{
+	    // Get rid of trailing whitespace
+	    end_col = line_end_col;
+	    if (end_col < start_col)
+		end_col = start_col;
+
+	    // If the last line extended to the end, add an extra newline
+	    if (row == row2)
+		add_newline_flag = TRUE;
+	}
+
+	// If after the first row, we need to always add a newline
+	if (row > row1 && !LineWraps[row - 1])
+	    *bufp++ = NL;
+
+	// Safetey check for in case resizing went wrong
+	if (row < screen_Rows && end_col <= screen_Columns)
+	{
+	    if (enc_dbcs != 0)
+	    {
+		int	i;
+
+		p = ScreenLines + LineOffset[row];
+		for (i = start_col; i < end_col; ++i)
+		    if (enc_dbcs == DBCS_JPNU && p[i] == 0x8e)
+		    {
+			// single-width double-byte char
+			*bufp++ = 0x8e;
+			*bufp++ = ScreenLines2[LineOffset[row] + i];
+		    }
+		    else
+		    {
+			*bufp++ = p[i];
+			if (MB_BYTE2LEN(p[i]) == 2)
+			    *bufp++ = p[++i];
+		    }
+	    }
+	    else if (enc_utf8)
+	    {
+		int	off;
+		int	i;
+		int	ci;
+
+		off = LineOffset[row];
+		for (i = start_col; i < end_col; ++i)
+		{
+		    // The base character is either in ScreenLinesUC[] or
+		    // ScreenLines[].
+		    if (ScreenLinesUC[off + i] == 0)
+			*bufp++ = ScreenLines[off + i];
+		    else
+		    {
+			bufp += utf_char2bytes(ScreenLinesUC[off + i], bufp);
+			for (ci = 0; ci < Screen_mco; ++ci)
+			{
+			    // Add a composing character.
+			    if (ScreenLinesC[ci][off + i] == 0)
+				break;
+			    bufp += utf_char2bytes(ScreenLinesC[ci][off + i],
+									bufp);
+			}
+		    }
+		    // Skip right half of double-wide character.
+		    if (ScreenLines[off + i + 1] == 0)
+			++i;
+		}
+	    }
+	    else
+	    {
+		STRNCPY(bufp, ScreenLines + LineOffset[row] + start_col,
+							 end_col - start_col);
+		bufp += end_col - start_col;
+	    }
+	}
+    }
+
+    // Add a newline at the end if the selection ended there
+    if (add_newline_flag)
+	*bufp++ = NL;
+
+    // First cleanup any old selection and become the owner.
+    clip_free_selection(cbd);
+    clip_own_selection(cbd);
+
+    // Yank the text into the '*' register.
+    clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), cbd);
+
+    // Make the register contents available to the outside world.
+    clip_gen_set_selection(cbd);
+
+# ifdef FEAT_X11
+    if (both)
+    {
+	Clipboard_T *other = cbd == &clip_star ? &clip_plus : &clip_star;
+	// Do the same for the '+' register.
+	clip_free_selection(other);
+	clip_own_selection(other);
+	clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), other);
+	clip_gen_set_selection(other);
+    }
+# endif
+    mnv_free(buffer);
+}
+
+    void
+clip_gen_set_selection(Clipboard_T *cbd)
+{
+    if (!clip_did_set_selection)
+    {
+	// Updating postponed, so that accessing the system clipboard won't
+	// hang MNV when accessing it many times (e.g. on a :g command).
+	if ((cbd == &clip_plus && (clip_unnamed_saved & CLIP_UNNAMED_PLUS))
+		|| (cbd == &clip_star && (clip_unnamed_saved & CLIP_UNNAMED)))
+	{
+	    clipboard_needs_update = TRUE;
+	    return;
+	}
+    }
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+	clip_mch_set_selection(cbd);
+    else
+#  endif
+    {
+	if (clipmethod == CLIPMETHOD_WAYLAND)
+	{
+#  ifdef FEAT_WAYLAND_CLIPBOARD
+	    clip_wl_set_selection(cbd);
+#  endif
+	}
+	else if (clipmethod == CLIPMETHOD_X11)
+	{
+#  ifdef FEAT_XCLIPBOARD
+	    clip_xterm_set_selection(cbd);
+#  endif
+	}
+    }
+# else
+    clip_mch_set_selection(cbd);
+# endif
+}
+
+    static void
+clip_gen_request_selection(Clipboard_T *cbd)
+{
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+	clip_mch_request_selection(cbd);
+    else
+#  endif
+    {
+	if (clipmethod == CLIPMETHOD_WAYLAND)
+	{
+#  ifdef FEAT_WAYLAND_CLIPBOARD
+	    clip_wl_request_selection(cbd);
+#  endif
+	}
+	else if (clipmethod == CLIPMETHOD_X11)
+	{
+#  ifdef FEAT_XCLIPBOARD
+	    clip_xterm_request_selection(cbd);
+#  endif
+	}
+    }
+# else
+    clip_mch_request_selection(cbd);
+# endif
+}
+
+# if (defined(FEAT_X11) && defined(FEAT_XCLIPBOARD) && defined(USE_SYSTEM))
+    static int
+clip_x11_owner_exists(Clipboard_T *cbd)
+{
+    return XGetSelectionOwner(X_DISPLAY, cbd->sel_atom) != None;
+}
+# endif
+
+# if (defined(FEAT_X11) || defined(FEAT_WAYLAND_CLIPBOARD)) \
+	&& defined(USE_SYSTEM)
+    int
+clip_gen_owner_exists(Clipboard_T *cbd UNUSED)
+{
+#  if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#   ifdef FEAT_GUI_GTK
+    if (gui.in_use)
+	return clip_gtk_owner_exists(cbd);
+    else
+#   endif
+    {
+	if (clipmethod == CLIPMETHOD_WAYLAND)
+	{
+#   ifdef FEAT_WAYLAND_CLIPBOARD
+	    return clip_wl_owner_exists(cbd);
+#   endif
+	}
+	else if (clipmethod == CLIPMETHOD_X11)
+	{
+#   ifdef FEAT_XCLIPBOARD
+	    return clip_x11_owner_exists(cbd);
+#   endif
+	}
+	else
+	    return FALSE;
+    }
+#  else
+    return TRUE;
+#  endif
+}
+# endif
+
+/*
+ * Stuff for the X clipboard.  Shared between VMS and Unix.
+ */
+
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11)
+#  include <X11/Xatom.h>
+#  include <X11/Intrinsic.h>
+
+/*
+ * Open the application context (if it hasn't been opened yet).
+ * Used for Motif GUI and the xterm clipboard.
+ */
+    void
+open_app_context(void)
+{
+    if (app_context == NULL)
+    {
+	XtToolkitInitialize();
+	app_context = XtCreateApplicationContext();
+    }
+}
+
+static Atom	mnv_atom;	// MNV's own special selection format
+static Atom	mnvenc_atom;	// MNV's extended selection format
+static Atom	utf8_atom;
+static Atom	compound_text_atom;
+static Atom	text_atom;
+static Atom	targets_atom;
+static Atom	timestamp_atom;	// Used to get a timestamp
+
+    void
+x11_setup_atoms(Display *dpy)
+{
+    mnv_atom	       = XInternAtom(dpy, MNV_ATOM_NAME,   False);
+    mnvenc_atom	       = XInternAtom(dpy, MNVENC_ATOM_NAME,False);
+    utf8_atom	       = XInternAtom(dpy, "UTF8_STRING",   False);
+    compound_text_atom = XInternAtom(dpy, "COMPOUND_TEXT", False);
+    text_atom	       = XInternAtom(dpy, "TEXT",	   False);
+    targets_atom       = XInternAtom(dpy, "TARGETS",	   False);
+    clip_star.sel_atom = XA_PRIMARY;
+    clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD",	   False);
+    timestamp_atom     = XInternAtom(dpy, "TIMESTAMP",	   False);
+}
+
+/*
+ * X Selection stuff, for cutting and pasting text to other windows.
+ */
+
+    static Boolean
+clip_x11_convert_selection_cb(
+    Widget	w UNUSED,
+    Atom	*sel_atom,
+    Atom	*target,
+    Atom	*type,
+    XtPointer	*value,
+    long_u	*length,
+    int		*format)
+{
+    static char_u   *save_result = NULL;
+    static long_u   save_length = 0;
+    char_u	    *string;
+    int		    motion_type;
+    Clipboard_T    *cbd;
+    int		    i;
+
+    if (*sel_atom == clip_plus.sel_atom)
+	cbd = &clip_plus;
+    else
+	cbd = &clip_star;
+
+    if (!cbd->owned)
+	return False;	    // Shouldn't ever happen
+
+    // requestor wants to know what target types we support
+    if (*target == targets_atom)
+    {
+	static Atom array[7];
+
+	*value = (XtPointer)array;
+	i = 0;
+	array[i++] = targets_atom;
+	array[i++] = mnvenc_atom;
+	array[i++] = mnv_atom;
+	if (enc_utf8)
+	    array[i++] = utf8_atom;
+	array[i++] = XA_STRING;
+	array[i++] = text_atom;
+	array[i++] = compound_text_atom;
+
+	*type = XA_ATOM;
+	// This used to be: *format = sizeof(Atom) * 8; but that caused
+	// crashes on 64 bit machines. (Peter Derr)
+	*format = 32;
+	*length = i;
+	return True;
+    }
+
+    if (       *target != XA_STRING
+	    && *target != mnvenc_atom
+	    && (*target != utf8_atom || !enc_utf8)
+	    && *target != mnv_atom
+	    && *target != text_atom
+	    && *target != compound_text_atom)
+	return False;
+
+    clip_get_selection(cbd);
+    motion_type = clip_convert_selection(&string, length, cbd);
+    if (motion_type < 0)
+	return False;
+
+    // For our own format, the first byte contains the motion type
+    if (*target == mnv_atom)
+	(*length)++;
+
+    // Our own format with encoding: motion 'encoding' NUL text
+    if (*target == mnvenc_atom)
+	*length += STRLEN(p_enc) + 2;
+
+    if (save_length < *length || save_length / 2 >= *length)
+	*value = XtRealloc((char *)save_result, (Cardinal)*length + 1);
+    else
+	*value = save_result;
+    if (*value == NULL)
+    {
+	mnv_free(string);
+	return False;
+    }
+    save_result = (char_u *)*value;
+    save_length = *length;
+
+    if (*target == XA_STRING || (*target == utf8_atom && enc_utf8))
+    {
+	mch_memmove(save_result, string, (size_t)(*length));
+	*type = *target;
+    }
+    else if (*target == compound_text_atom || *target == text_atom)
+    {
+	XTextProperty	text_prop;
+	char		*string_nt = (char *)save_result;
+	int		conv_result;
+
+	// create NUL terminated string which XmbTextListToTextProperty wants
+	mch_memmove(string_nt, string, (size_t)*length);
+	string_nt[*length] = NUL;
+	conv_result = XmbTextListToTextProperty(X_DISPLAY, &string_nt,
+					   1, XCompoundTextStyle, &text_prop);
+	if (conv_result != Success)
+	{
+	    mnv_free(string);
+	    return False;
+	}
+	*value = (XtPointer)(text_prop.value);	//    from plain text
+	*length = text_prop.nitems;
+	*type = compound_text_atom;
+	XtFree((char *)save_result);
+	save_result = (char_u *)*value;
+	save_length = *length;
+    }
+    else if (*target == mnvenc_atom)
+    {
+	int l = STRLEN(p_enc);
+
+	save_result[0] = motion_type;
+	STRCPY(save_result + 1, p_enc);
+	mch_memmove(save_result + l + 2, string, (size_t)(*length - l - 2));
+	*type = mnvenc_atom;
+    }
+    else
+    {
+	save_result[0] = motion_type;
+	mch_memmove(save_result + 1, string, (size_t)(*length - 1));
+	*type = mnv_atom;
+    }
+    *format = 8;	    // 8 bits per char
+    mnv_free(string);
+    return True;
+}
+
+    static void
+clip_x11_lose_ownership_cb(Widget w UNUSED, Atom *sel_atom)
+{
+    if (*sel_atom == clip_plus.sel_atom)
+	clip_lose_selection(&clip_plus);
+    else
+	clip_lose_selection(&clip_star);
+}
+
+    static void
+clip_x11_notify_cb(Widget w UNUSED, Atom *sel_atom UNUSED, Atom *target UNUSED)
+{
+    // To prevent automatically freeing the selection value.
+}
+
+/*
+ * Property callback to get a timestamp for XtOwnSelection.
+ */
+#  if defined(FEAT_X11) && defined(FEAT_XCLIPBOARD)
+    static void
+clip_x11_timestamp_cb(
+    Widget	w,
+    XtPointer	n UNUSED,
+    XEvent	*event,
+    Boolean	*cont UNUSED)
+{
+    Atom	    actual_type;
+    int		    format;
+    unsigned  long  nitems, bytes_after;
+    unsigned char   *prop=NULL;
+    XPropertyEvent  *xproperty=&event->xproperty;
+
+    // Must be a property notify, state can't be Delete (True), has to be
+    // one of the supported selection types.
+    if (event->type != PropertyNotify || xproperty->state
+	    || (xproperty->atom != clip_star.sel_atom
+				    && xproperty->atom != clip_plus.sel_atom))
+	return;
+
+    if (XGetWindowProperty(xproperty->display, xproperty->window,
+	  xproperty->atom, 0, 0, False, timestamp_atom, &actual_type, &format,
+						&nitems, &bytes_after, &prop))
+	return;
+
+    if (prop)
+	XFree(prop);
+
+    // Make sure the property type is "TIMESTAMP" and it's 32 bits.
+    if (actual_type != timestamp_atom || format != 32)
+	return;
+
+    // Get the selection, using the event timestamp.
+    if (XtOwnSelection(w, xproperty->atom, xproperty->time,
+	    clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb,
+	    clip_x11_notify_cb) == OK)
+    {
+	// Set the "owned" flag now, there may have been a call to
+	// lose_ownership_cb in between.
+	if (xproperty->atom == clip_plus.sel_atom)
+	    clip_plus.owned = TRUE;
+	else
+	    clip_star.owned = TRUE;
+    }
+}
+
+    void
+x11_setup_selection(Widget w)
+{
+    XtAddEventHandler(w, PropertyChangeMask, False,
+	    /*(XtEventHandler)*/clip_x11_timestamp_cb, (XtPointer)NULL);
+}
+#  endif
+
+    static void
+clip_x11_request_selection_cb(
+    Widget	w UNUSED,
+    XtPointer	success,
+    Atom	*sel_atom,
+    Atom	*type,
+    XtPointer	value,
+    long_u	*length,
+    int		*format)
+{
+    int		motion_type = MAUTO;
+    long_u	len;
+    char_u	*p;
+    char	**text_list = NULL;
+    Clipboard_T	*cbd;
+    char_u	*tmpbuf = NULL;
+
+    if (*sel_atom == clip_plus.sel_atom)
+	cbd = &clip_plus;
+    else
+	cbd = &clip_star;
+
+    if (value == NULL || *length == 0)
+    {
+	clip_free_selection(cbd);	// nothing received, clear register
+	*(int *)success = FALSE;
+	return;
+    }
+    p = (char_u *)value;
+    len = *length;
+    if (*type == mnv_atom)
+    {
+	motion_type = *p++;
+	len--;
+    }
+
+    else if (*type == mnvenc_atom)
+    {
+	char_u		*enc;
+	mnvconv_T	conv;
+	int		convlen;
+
+	motion_type = *p++;
+	--len;
+
+	enc = p;
+	p += STRLEN(p) + 1;
+	len -= p - enc;
+
+	// If the encoding of the text is different from 'encoding', attempt
+	// converting it.
+	conv.vc_type = CONV_NONE;
+	convert_setup(&conv, enc, p_enc);
+	if (conv.vc_type != CONV_NONE)
+	{
+	    convlen = len;	// Need to use an int here.
+	    tmpbuf = string_convert(&conv, p, &convlen);
+	    len = convlen;
+	    if (tmpbuf != NULL)
+		p = tmpbuf;
+	    convert_setup(&conv, NULL, NULL);
+	}
+    }
+
+    else if (*type == compound_text_atom
+	    || *type == utf8_atom
+	    || (enc_dbcs != 0 && *type == text_atom))
+    {
+	XTextProperty	text_prop;
+	int		n_text = 0;
+	int		status;
+
+	text_prop.value = (unsigned char *)value;
+	text_prop.encoding = *type;
+	text_prop.format = *format;
+	text_prop.nitems = len;
+#  if defined(X_HAVE_UTF8_STRING)
+	if (*type == utf8_atom)
+	    status = Xutf8TextPropertyToTextList(X_DISPLAY, &text_prop,
+							 &text_list, &n_text);
+	else
+#  endif
+	    status = XmbTextPropertyToTextList(X_DISPLAY, &text_prop,
+							 &text_list, &n_text);
+	if (status != Success || n_text < 1)
+	{
+	    *(int *)success = FALSE;
+	    return;
+	}
+	p = (char_u *)text_list[0];
+	len = STRLEN(p);
+    }
+    clip_yank_selection(motion_type, p, (long)len, cbd);
+
+    if (text_list != NULL)
+	XFreeStringList(text_list);
+    mnv_free(tmpbuf);
+    XtFree((char *)value);
+    *(int *)success = TRUE;
+}
+
+    void
+clip_x11_request_selection(
+    Widget	myShell,
+    Display	*dpy,
+    Clipboard_T	*cbd)
+{
+    XEvent	event;
+    Atom	type;
+    static int	success;
+    int		i;
+    time_t	start_time;
+    int		timed_out = FALSE;
+
+    for (i = 0; i < 6; i++)
+    {
+	switch (i)
+	{
+	    case 0:  type = mnvenc_atom;	break;
+	    case 1:  type = mnv_atom;		break;
+	    case 2:  type = utf8_atom;		break;
+	    case 3:  type = compound_text_atom; break;
+	    case 4:  type = text_atom;		break;
+	    default: type = XA_STRING;
+	}
+	if (type == utf8_atom
+#  if defined(X_HAVE_UTF8_STRING)
+		&& !enc_utf8
+#  endif
+		)
+	    // Only request utf-8 when 'encoding' is utf8 and
+	    // Xutf8TextPropertyToTextList is available.
+	    continue;
+	success = MAYBE;
+	XtGetSelectionValue(myShell, cbd->sel_atom, type,
+	    clip_x11_request_selection_cb, (XtPointer)&success, CurrentTime);
+
+	// Make sure the request for the selection goes out before waiting for
+	// a response.
+	XFlush(dpy);
+
+	/*
+	 * Wait for result of selection request, otherwise if we type more
+	 * characters, then they will appear before the one that requested the
+	 * paste!  Don't worry, we will catch up with any other events later.
+	 */
+	start_time = time(NULL);
+	while (success == MAYBE)
+	{
+	    if (XCheckTypedEvent(dpy, PropertyNotify, &event)
+		    || XCheckTypedEvent(dpy, SelectionNotify, &event)
+		    || XCheckTypedEvent(dpy, SelectionRequest, &event))
+	    {
+		// This is where clip_x11_request_selection_cb() should be
+		// called.  It may actually happen a bit later, so we loop
+		// until "success" changes.
+		// We may get a SelectionRequest here and if we don't handle
+		// it we hang.  KDE klipper does this, for example.
+		// We need to handle a PropertyNotify for large selections.
+		XtDispatchEvent(&event);
+		continue;
+	    }
+
+	    // Time out after 2 to 3 seconds to avoid that we hang when the
+	    // other process doesn't respond.  Note that the SelectionNotify
+	    // event may still come later when the selection owner comes back
+	    // to life and the text gets inserted unexpectedly.  Don't know
+	    // why that happens or how to avoid that :-(.
+	    if (time(NULL) > start_time + 2)
+	    {
+		timed_out = TRUE;
+		break;
+	    }
+
+	    // Do we need this?  Probably not.
+	    XSync(dpy, False);
+
+	    // Wait for 1 msec to avoid that we eat up all CPU time.
+	    ui_delay(1L, TRUE);
+	}
+
+	if (success == TRUE)
+	    return;
+
+	// don't do a retry with another type after timing out, otherwise we
+	// hang for 15 seconds.
+	if (timed_out)
+	    break;
+    }
+
+    // Final fallback position - use the X CUT_BUFFER0 store
+    yank_cut_buffer0(dpy, cbd);
+}
+
+    void
+clip_x11_lose_selection(Widget myShell, Clipboard_T *cbd)
+{
+    XtDisownSelection(myShell, cbd->sel_atom,
+				XtLastTimestampProcessed(XtDisplay(myShell)));
+}
+
+    int
+clip_x11_own_selection(Widget myShell, Clipboard_T *cbd)
+{
+    // When using the GUI we have proper timestamps, use the one of the last
+    // event.  When in the console we don't get events (the terminal gets
+    // them), Get the time by a zero-length append, clip_x11_timestamp_cb will
+    // be called with the current timestamp.
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+    {
+	if (XtOwnSelection(myShell, cbd->sel_atom,
+	       XtLastTimestampProcessed(XtDisplay(myShell)),
+	       clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb,
+	       clip_x11_notify_cb) == False)
+	    return FAIL;
+    }
+    else
+#  endif
+    {
+	if (!XChangeProperty(XtDisplay(myShell), XtWindow(myShell),
+		  cbd->sel_atom, timestamp_atom, 32, PropModeAppend, NULL, 0))
+	    return FAIL;
+    }
+    // Flush is required in a terminal as nothing else is doing it.
+    XFlush(XtDisplay(myShell));
+    return OK;
+}
+
+/*
+ * Send the current selection to the clipboard.  Do nothing for X because we
+ * will fill in the selection only when requested by another app.
+ */
+    void
+clip_x11_set_selection(Clipboard_T *cbd UNUSED)
+{
+}
+
+# endif
+
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK)
+/*
+ * Get the contents of the X CUT_BUFFER0 and put it in "cbd".
+ */
+    void
+yank_cut_buffer0(Display *dpy, Clipboard_T *cbd)
+{
+    int		nbytes = 0;
+    char_u	*buffer = (char_u *)XFetchBuffer(dpy, &nbytes, 0);
+
+    if (nbytes > 0)
+    {
+	int  done = FALSE;
+
+	// CUT_BUFFER0 is supposed to be always latin1.  Convert to 'enc' when
+	// using a multi-byte encoding.  Conversion between two 8-bit
+	// character sets usually fails and the text might actually be in
+	// 'enc' anyway.
+	if (has_mbyte)
+	{
+	    char_u	*conv_buf;
+	    mnvconv_T	vc;
+
+	    vc.vc_type = CONV_NONE;
+	    if (convert_setup(&vc, (char_u *)"latin1", p_enc) == OK)
+	    {
+		conv_buf = string_convert(&vc, buffer, &nbytes);
+		if (conv_buf != NULL)
+		{
+		    clip_yank_selection(MCHAR, conv_buf, (long)nbytes, cbd);
+		    mnv_free(conv_buf);
+		    done = TRUE;
+		}
+		convert_setup(&vc, NULL, NULL);
+	    }
+	}
+	if (!done)  // use the text without conversion
+	    clip_yank_selection(MCHAR, buffer, (long)nbytes, cbd);
+	XFree((void *)buffer);
+	if (p_verbose > 0)
+	{
+	    verbose_enter();
+	    verb_msg(_("Used CUT_BUFFER0 instead of empty selection"));
+	    verbose_leave();
+	}
+    }
+}
+# endif
+
+/*
+ * SELECTION / PRIMARY ('*')
+ *
+ * Text selection stuff that uses the GUI selection register '*'.  When using a
+ * GUI this may be text from another window, otherwise it is the last text we
+ * had highlighted with VIsual mode.  With mouse support, clicking the middle
+ * button performs the paste, otherwise you will need to do <"*p>. "
+ * If not under X, it is synonymous with the clipboard register '+'.
+ *
+ * X CLIPBOARD ('+')
+ *
+ * Text selection stuff that uses the GUI clipboard register '+'.
+ * Under X, this matches the standard cut/paste buffer CLIPBOARD selection.
+ * It will be used for unnamed cut/pasting is 'clipboard' contains "unnamed",
+ * otherwise you will need to do <"+p>. "
+ * If not under X, it is synonymous with the selection register '*'.
+ */
+
+/*
+ * Routine to export any final X selection we had to the environment
+ * so that the text is still available after MNV has exited. X selections
+ * only exist while the owning application exists, so we write to the
+ * permanent (while X runs) store CUT_BUFFER0.
+ * Dump the CLIPBOARD selection if we own it (it's logically the more
+ * 'permanent' of the two), otherwise the PRIMARY one.
+ * For now, use a hard-coded sanity limit of 1Mb of data.
+ */
+# if defined(FEAT_X11) && defined(FEAT_CLIPBOARD)
+    void
+x11_export_final_selection(void)
+{
+    Display	*dpy;
+    char_u	*str = NULL;
+    long_u	len = 0;
+    int		motion_type = -1;
+
+#  ifdef FEAT_GUI
+    if (gui.in_use)
+	dpy = X_DISPLAY;
+    else
+#  endif
+#  ifdef FEAT_XCLIPBOARD
+	dpy = xterm_dpy;
+#  else
+	return;
+#  endif
+
+    // Get selection to export
+    if (clip_plus.owned)
+	motion_type = clip_convert_selection(&str, &len, &clip_plus);
+    else if (clip_star.owned)
+	motion_type = clip_convert_selection(&str, &len, &clip_star);
+
+    // Check it's OK
+    if (dpy != NULL && str != NULL && motion_type >= 0
+					       && len < 1024*1024 && len > 0)
+    {
+	int ok = TRUE;
+
+	// The CUT_BUFFER0 is supposed to always contain latin1.  Convert from
+	// 'enc' when it is a multi-byte encoding.  When 'enc' is an 8-bit
+	// encoding conversion usually doesn't work, so keep the text as-is.
+	if (has_mbyte)
+	{
+	    mnvconv_T	vc;
+
+	    vc.vc_type = CONV_NONE;
+	    if (convert_setup(&vc, p_enc, (char_u *)"latin1") == OK)
+	    {
+		int	intlen = len;
+		char_u	*conv_str;
+
+		vc.vc_fail = TRUE;
+		conv_str = string_convert(&vc, str, &intlen);
+		len = intlen;
+		if (conv_str != NULL)
+		{
+		    mnv_free(str);
+		    str = conv_str;
+		}
+		else
+		{
+		    ok = FALSE;
+		}
+		convert_setup(&vc, NULL, NULL);
+	    }
+	    else
+	    {
+		ok = FALSE;
+	    }
+	}
+
+	// Do not store the string if conversion failed.  Better to use any
+	// other selection than garbled text.
+	if (ok)
+	{
+	    XStoreBuffer(dpy, (char *)str, (int)len, 0);
+	    XFlush(dpy);
+	}
+    }
+
+    mnv_free(str);
+}
+# endif
+
+    void
+clip_free_selection(Clipboard_T *cbd)
+{
+    yankreg_T *y_ptr = get_y_current();
+
+    if (cbd == &clip_plus)
+	set_y_current(get_y_register(PLUS_REGISTER));
+    else
+	set_y_current(get_y_register(STAR_REGISTER));
+    free_yank_all();
+    get_y_current()->y_size = 0;
+    set_y_current(y_ptr);
+}
+
+/*
+ * Get the selected text and put it in register '*' or '+'.
+ */
+    void
+clip_get_selection(Clipboard_T *cbd)
+{
+    yankreg_T	*old_y_previous, *old_y_current;
+    pos_T	old_cursor;
+    pos_T	old_visual;
+    int		old_visual_mode;
+    colnr_T	old_virtcol;
+    colnr_T	old_curswant;
+    int		old_set_curswant;
+    pos_T	old_op_start, old_op_end;
+    oparg_T	oa;
+    cmdarg_T	ca;
+
+    if (cbd->owned)
+    {
+	if ((cbd == &clip_plus
+		&& get_y_register(PLUS_REGISTER)->y_array != NULL)
+		|| (cbd == &clip_star
+		    && get_y_register(STAR_REGISTER)->y_array != NULL))
+	    return;
+
+	// Avoid triggering autocmds such as TextYankPost.
+	block_autocmds();
+
+	// Get the text between clip_star.start & clip_star.end
+	old_y_previous = get_y_previous();
+	old_y_current = get_y_current();
+	old_cursor = curwin->w_cursor;
+	old_virtcol = curwin->w_virtcol;
+	old_curswant = curwin->w_curswant;
+	old_set_curswant = curwin->w_set_curswant;
+	old_op_start = curbuf->b_op_start;
+	old_op_end = curbuf->b_op_end;
+	old_visual = VIsual;
+	old_visual_mode = VIsual_mode;
+	clear_oparg(&oa);
+	oa.regname = (cbd == &clip_plus ? '+' : '*');
+	oa.op_type = OP_YANK;
+	CLEAR_FIELD(ca);
+	ca.oap = &oa;
+	ca.cmdchar = 'y';
+	ca.count1 = 1;
+	ca.retval = CA_NO_ADJ_OP_END;
+	do_pending_operator(&ca, 0, TRUE);
+
+	// restore things
+	set_y_previous(old_y_previous);
+	set_y_current(old_y_current);
+	curwin->w_cursor = old_cursor;
+	curwin->w_virtcol = old_virtcol;
+	changed_cline_bef_curs();   // old w_virtcol et al. may be invalid
+	curwin->w_curswant = old_curswant;
+	curwin->w_set_curswant = old_set_curswant;
+	curbuf->b_op_start = old_op_start;
+	curbuf->b_op_end = old_op_end;
+	VIsual = old_visual;
+	VIsual_mode = old_visual_mode;
+
+	unblock_autocmds();
+    }
+    else if (!is_clipboard_needs_update())
+    {
+	clip_free_selection(cbd);
+
+	// Try to get selected text from another window
+	clip_gen_request_selection(cbd);
+    }
+}
+
+/*
+ * Convert from the GUI selection string into the '*'/'+' register.
+ */
+    void
+clip_yank_selection(
+    int		type,
+    char_u	*str,
+    long	len,
+    Clipboard_T *cbd)
+{
+    yankreg_T *y_ptr;
+
+    if (cbd == &clip_plus)
+	y_ptr = get_y_register(PLUS_REGISTER);
+    else
+	y_ptr = get_y_register(STAR_REGISTER);
+
+    clip_free_selection(cbd);
+
+    str_to_reg(y_ptr, type, str, len, -1, FALSE);
+}
+
+    static int
+clip_convert_selection_offset(
+	char_u	    **str,
+	long_u	    *len,
+	int	    offset, // Extra space to add in *str and the offset to
+			    // place the actual string in *str.
+	Clipboard_T *cbd)
+{
+    char_u	*p;
+    int		lnum;
+    int		i, j;
+    int_u	eolsize;
+    yankreg_T	*y_ptr;
+
+    if (cbd == &clip_plus)
+	y_ptr = get_y_register(PLUS_REGISTER);
+    else
+	y_ptr = get_y_register(STAR_REGISTER);
+
+# ifdef USE_CRNL
+    eolsize = 2;
+# else
+    eolsize = 1;
+# endif
+
+    *str = NULL;
+    *len = 0;
+    if (y_ptr->y_array == NULL)
+	return -1;
+
+    for (i = 0; i < y_ptr->y_size; i++)
+	*len += (long_u)y_ptr->y_array[i].length + eolsize;
+
+    // Don't want newline character at end of last line if we're in MCHAR mode.
+    if (y_ptr->y_type == MCHAR && *len >= eolsize)
+	*len -= eolsize;
+
+    *len += offset;
+    p = *str = alloc(*len + 1);	// add one to avoid zero
+    if (p == NULL)
+	return -1;
+    p += offset;
+    lnum = 0;
+    for (i = 0, j = 0; i < (int)*len - offset; i++, j++)
+    {
+	if (y_ptr->y_array[lnum].string[j] == '\n')
+	    p[i] = NUL;
+	else if (y_ptr->y_array[lnum].string[j] == NUL)
+	{
+# ifdef USE_CRNL
+	    p[i++] = '\r';
+# endif
+	    p[i] = '\n';
+	    lnum++;
+	    j = -1;
+	}
+	else
+	    p[i] = y_ptr->y_array[lnum].string[j];
+    }
+    return y_ptr->y_type;
+}
+
+/*
+ * Convert the '*'/'+' register into a GUI selection string returned in *str
+ * with length *len.
+ * Returns the motion type, or -1 for failure.
+ */
+    int
+clip_convert_selection(char_u **str, long_u *len, Clipboard_T *cbd)
+{
+    return clip_convert_selection_offset(str, len, 0, cbd);
+}
+
+/*
+ * When "regname" is a clipboard register, obtain the selection.  If it's not
+ * available return zero, otherwise return "regname".
+ */
+    int
+may_get_selection(int regname)
+{
+    if (regname == '*')
+    {
+	if (!clip_star.available)
+	    regname = 0;
+	else
+	    clip_get_selection(&clip_star);
+    }
+    else if (regname == '+')
+    {
+	if (!clip_plus.available)
+	    regname = 0;
+	else
+	    clip_get_selection(&clip_plus);
+    }
+    return regname;
+}
+
+/*
+ * If we have written to a clipboard register, send the text to the clipboard.
+ */
+    void
+may_set_selection(void)
+{
+    if ((get_y_current() == get_y_register(STAR_REGISTER))
+	    && clip_star.available)
+    {
+	clip_own_selection(&clip_star);
+	clip_gen_set_selection(&clip_star);
+    }
+    else if ((get_y_current() == get_y_register(PLUS_REGISTER))
+	    && clip_plus.available)
+    {
+	clip_own_selection(&clip_plus);
+	clip_gen_set_selection(&clip_plus);
+    }
+}
+
+# if defined(FEAT_WAYLAND_CLIPBOARD)
+
+    static clip_wl_selection_T *
+clip_wl_get_selection(wayland_selection_T sel)
+{
+    switch (sel)
+    {
+	case WAYLAND_SELECTION_REGULAR:
+	    return &clip_wl.regular;
+	case WAYLAND_SELECTION_PRIMARY:
+	    return &clip_wl.primary;
+	default:
+	    return NULL;
+    }
+}
+
+    static clip_wl_selection_T *
+clip_wl_get_selection_from_cbd(Clipboard_T *cbd)
+{
+    if (cbd == &clip_plus)
+	return &clip_wl.regular;
+    else if (cbd == &clip_star)
+	return &clip_wl.primary;
+    else
+	return NULL;
+}
+
+    static Clipboard_T *
+clip_wl_get_cbd_from_selection(clip_wl_selection_T *sel)
+{
+    if (sel == &clip_wl.regular)
+	return &clip_plus;
+    else if (sel == &clip_wl.primary)
+	return &clip_star;
+    else
+	return NULL;
+}
+
+    static wayland_selection_T
+clip_wl_get_selection_type(clip_wl_selection_T *sel)
+{
+    if (sel == &clip_wl.regular)
+	return WAYLAND_SELECTION_REGULAR;
+    else if (sel == &clip_wl.primary)
+	return WAYLAND_SELECTION_PRIMARY;
+    else
+	return WAYLAND_SELECTION_NONE;
+}
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+/*
+ * If globals required for focus stealing method are available.
+ */
+    static bool
+clip_wl_focus_stealing_available(void)
+{
+    return wayland_ct->gobjects.wl_compositor != NULL &&
+	wayland_ct->gobjects.wl_shm != NULL &&
+	wayland_ct->gobjects.xdg_wm_base != NULL;
+}
+
+/*
+ * Called when compositor isn't using the buffer anymore, we can reuse it
+ * again.
+ */
+    static void
+wl_buffer_listener_release(
+	void		    *data,
+	struct wl_buffer    *buffer UNUSED)
+{
+    clip_wl_buffer_store_T *store = data;
+
+    store->available = true;
+}
+
+static struct wl_buffer_listener    wl_buffer_listener = {
+    .release	    = wl_buffer_listener_release
+};
+
+/*
+ * Destroy a buffer store structure.
+ */
+    static void
+clip_wl_destroy_buffer_store(clip_wl_buffer_store_T *store)
+{
+    if (store == NULL)
+	return;
+    if (store->buffer != NULL)
+	wl_buffer_destroy(store->buffer);
+    if (store->pool != NULL)
+	wl_shm_pool_destroy(store->pool);
+
+    close(store->fd);
+
+    mnv_free(store);
+}
+
+/*
+ * Initialize a buffer and its backing memory pool.
+ */
+    static clip_wl_buffer_store_T *
+clip_wl_init_buffer_store(int width, int height)
+{
+    int			    fd, r;
+    clip_wl_buffer_store_T  *store;
+
+    store = alloc(sizeof(*store));
+
+    if (store == NULL)
+	return NULL;
+
+    store->available = false;
+
+    store->width = width;
+    store->height = height;
+    store->stride = store->width * 4;
+    store->size = store->stride * store->height;
+
+    fd = mch_create_anon_file();
+    r = ftruncate(fd, store->size);
+
+    if (r == -1)
+    {
+	if (fd >= 0)
+	    close(fd);
+	return NULL;
+    }
+
+    store->pool = wl_shm_create_pool(
+	    wayland_ct->gobjects.wl_shm,
+	    fd,
+	    store->size);
+    store->buffer = wl_shm_pool_create_buffer(
+	    store->pool,
+	    0,
+	    store->width,
+	    store->height,
+	    store->stride,
+	    WL_SHM_FORMAT_ARGB8888);
+
+    store->fd = fd;
+
+    wl_buffer_add_listener(store->buffer, &wl_buffer_listener, store);
+
+    if (vwl_connection_roundtrip(wayland_ct) == FAIL)
+    {
+	clip_wl_destroy_buffer_store(store);
+	return NULL;
+    }
+
+    store->available = true;
+
+    return store;
+}
+
+/*
+ * Configure xdg_surface
+ */
+    static void
+xdg_surface_listener_configure(
+	void		    *data UNUSED,
+	struct xdg_surface  *surface,
+	uint32_t	    serial)
+{
+    xdg_surface_ack_configure(surface, serial);
+}
+
+
+static struct xdg_surface_listener  xdg_surface_listener = {
+    .configure = xdg_surface_listener_configure
+};
+
+/*
+ * Destroy a focus stealing structure.
+ */
+    static void
+clip_wl_destroy_fs_surface(clip_wl_fs_surface_T *store)
+{
+    if (store == NULL)
+	return;
+    if (store->shell.toplevel != NULL)
+	xdg_toplevel_destroy(store->shell.toplevel);
+    if (store->shell.surface != NULL)
+	xdg_surface_destroy(store->shell.surface);
+    if (store->surface != NULL)
+	wl_surface_destroy(store->surface);
+    if (store->keyboard != NULL)
+    {
+	if (wl_keyboard_get_version(store->keyboard) >= 3)
+	    wl_keyboard_release(store->keyboard);
+	else
+	    wl_keyboard_destroy(store->keyboard);
+    }
+    mnv_free(store);
+}
+
+VWL_FUNCS_DUMMY_KEYBOARD_EVENTS()
+
+/*
+ * Called when the keyboard focus is on our surface
+ */
+    static void
+clip_wl_fs_keyboard_listener_enter(
+    void		*data,
+    struct wl_keyboard	*keyboard UNUSED,
+    uint32_t		serial,
+    struct wl_surface	*surface UNUSED,
+    struct wl_array	*keys UNUSED)
+{
+    clip_wl_fs_surface_T *store = data;
+
+    store->got_focus = true;
+
+    if (store->on_focus != NULL)
+	store->on_focus(store->user_data, serial);
+}
+
+
+static struct wl_keyboard_listener  vwl_fs_keyboard_listener = {
+    .enter	    = clip_wl_fs_keyboard_listener_enter,
+    .key	    = clip_wl_fs_keyboard_listener_key,
+    .keymap	    = clip_wl_fs_keyboard_listener_keymap,
+    .leave	    = clip_wl_fs_keyboard_listener_leave,
+    .modifiers	    = clip_wl_fs_keyboard_listener_modifiers,
+    .repeat_info    = clip_wl_fs_keyboard_listener_repeat_info
+};
+
+/*
+ * Create an invisible surface in order to gain focus and call on_focus() with
+ * serial that was given.
+ */
+    static int
+clip_wl_init_fs_surface(
+	vwl_seat_T		*seat,
+	clip_wl_buffer_store_T	*buffer_store,
+	void			(*on_focus)(void *, uint32_t),
+	void			*user_data)
+{
+    clip_wl_fs_surface_T    *store;
+#   ifdef ELAPSED_FUNC
+    elapsed_T		    start_tv;
+#   endif
+
+    if (wayland_ct->gobjects.wl_compositor == NULL
+	    || wayland_ct->gobjects.xdg_wm_base == NULL
+	    || buffer_store == NULL
+	    || seat == NULL)
+	return FAIL;
+
+    store = ALLOC_CLEAR_ONE(clip_wl_fs_surface_T);
+
+    if (store == NULL)
+	return FAIL;
+
+    // Get keyboard
+    store->keyboard = vwl_seat_get_keyboard(seat);
+
+    if (store->keyboard == NULL)
+	goto fail;
+
+    wl_keyboard_add_listener(store->keyboard, &vwl_fs_keyboard_listener, store);
+
+    if (vwl_connection_dispatch(wayland_ct) < 0)
+	goto fail;
+
+    store->surface = wl_compositor_create_surface(
+	    wayland_ct->gobjects.wl_compositor);
+    store->shell.surface = xdg_wm_base_get_xdg_surface(
+	    wayland_ct->gobjects.xdg_wm_base, store->surface);
+    store->shell.toplevel = xdg_surface_get_toplevel(store->shell.surface);
+
+    xdg_toplevel_set_title(store->shell.toplevel, "MNV clipboard");
+
+    xdg_surface_add_listener(store->shell.surface,
+	    &xdg_surface_listener, NULL);
+
+    wl_surface_commit(store->surface);
+
+    store->on_focus = on_focus;
+    store->user_data = user_data;
+    store->got_focus = FALSE;
+
+    if (vwl_connection_roundtrip(wayland_ct) == FAIL)
+	goto fail;
+
+    // We may get the enter event early, if we do then we will set `got_focus`
+    // to TRUE.
+    if (store->got_focus)
+	goto early_exit;
+
+    // Buffer hasn't been released yet, abort. This shouldn't happen but still
+    // check for it.
+    if (!buffer_store->available)
+	goto fail;
+
+    buffer_store->available = false;
+
+    wl_surface_attach(store->surface, buffer_store->buffer, 0, 0);
+    wl_surface_damage(store->surface, 0, 0,
+	    buffer_store->width, buffer_store->height);
+    wl_surface_commit(store->surface);
+
+    // Dispatch events until we receive the enter event. Add a max delay of
+    // 'p_wtm' when waiting for it (may be longer depending on how long we poll
+    // when dispatching events)
+#   ifdef ELAPSED_FUNC
+    ELAPSED_INIT(start_tv);
+#   endif
+
+    while (vwl_connection_dispatch(wayland_ct) >= 0)
+    {
+	if (store->got_focus)
+	    break;
+
+#   ifdef ELAPSED_FUNC
+	if (ELAPSED_FUNC(start_tv) >= p_wtm)
+	    goto fail;
+#   endif
+    }
+early_exit:
+    clip_wl_destroy_fs_surface(store);
+    vwl_connection_flush(wayland_ct);
+
+    return OK;
+fail:
+    clip_wl_destroy_fs_surface(store);
+    vwl_connection_flush(wayland_ct);
+
+    return FAIL;
+}
+
+#  endif // FEAT_WAYLAND_CLIPBOARD_FS
+
+    static bool
+wl_data_offer_listener_event_offer(
+    void *data UNUSED,
+    vwl_data_offer_T *offer UNUSED,
+    const char *mime_type
+)
+{
+    // Only accept mime type if we support it
+    for (int i = 0; i < (int)ARRAY_LENGTH(supported_mimes); i++)
+	if (STRCMP(mime_type, supported_mimes[i]) == 0)
+	    return true;
+    return FALSE;
+}
+
+static const vwl_data_offer_listener_T vwl_data_offer_listener = {
+    .offer = wl_data_offer_listener_event_offer
+};
+
+    static void
+vwl_data_device_listener_event_data_offer(
+	void *data UNUSED,
+	vwl_data_device_T *device UNUSED,
+	vwl_data_offer_T *offer)
+{
+    // Immediately start listening for offer events from the data offer
+    vwl_data_offer_add_listener(offer, &vwl_data_offer_listener, NULL);
+}
+
+    static void
+vwl_data_device_listener_event_selection(
+	void *data UNUSED,
+	vwl_data_device_T *device UNUSED,
+	vwl_data_offer_T *offer,
+	wayland_selection_T selection)
+{
+    clip_wl_selection_T *sel = clip_wl_get_selection(selection);
+
+    // Destroy previous offer if any, it is now invalid
+    vwl_data_offer_destroy(sel->offer);
+
+    // There are two cases when sel->offer is NULL
+    // 1. No one owns the selection
+    // 2. We own the selection (we'll just access the register directly)
+    if (offer == NULL || sel->source != NULL)
+    {
+	// Selection event is from us, so we are the source client. Therefore
+	// ignore it. Or the selection is cleared, so set sel->offer to NULL
+	vwl_data_offer_destroy(offer);
+	sel->offer = NULL;
+	return;
+    }
+
+    // Save offer. When we want to request data, then we'll actually call the
+    // receive method.
+    sel->offer = offer;
+
+}
+
+    static void
+vwl_data_device_listener_event_finished(
+	void *data UNUSED,
+	vwl_data_device_T *device)
+{
+    clip_wl_selection_T *sel;
+    // Device finished, guessing this can happen is when the seat becomes
+    // invalid? If so, let the user call :wlrestore! to reset. There wouldn't be
+    // any point in trying to create another data device for the same seat,
+    // since the seat is in an invalid state.
+    if (device == clip_wl.regular.device)
+    {
+	sel = &clip_wl.regular;
+	clip_wl.regular.device = NULL;
+    }
+    else if (device == clip_wl.primary.device)
+    {
+	sel = &clip_wl.primary;
+	clip_wl.primary.device = NULL;
+    }
+    else
+	// Shouldn't happen
+	return;
+
+    mnv_free(sel->contents);
+    vwl_data_source_destroy(sel->source);
+    vwl_data_offer_destroy(sel->offer);
+    sel->available = FALSE;
+
+    vwl_data_device_destroy(device);
+}
+
+static const vwl_data_device_listener_T vwl_data_device_listener = {
+    .data_offer = vwl_data_device_listener_event_data_offer,
+    .selection = vwl_data_device_listener_event_selection,
+    .finished = vwl_data_device_listener_event_finished
+};
+
+/*
+ * Initialize the clipboard for Wayland using the global Wayland connection.
+ * Returns OK on success and FAIL on failure.
+ */
+    int
+clip_init_wayland(void)
+{
+    int_u supported = WAYLAND_SELECTION_NONE;
+
+    if (wayland_ct == NULL)
+	return FAIL;
+
+    memset(&clip_wl, 0, sizeof(clip_wl));
+
+    clip_wl.seat = vwl_connection_get_seat(wayland_ct, (char *)p_wse);
+
+    if (clip_wl.seat == NULL)
+	return FAIL;
+
+    clip_wl.regular.manager = vwl_connection_get_data_device_manager(
+	    wayland_ct, WAYLAND_SELECTION_REGULAR, &supported);
+
+    if (clip_wl.regular.manager != NULL)
+    {
+	clip_wl.regular.device = vwl_data_device_manager_get_data_device(
+		clip_wl.regular.manager, clip_wl.seat);
+
+	if (clip_wl.regular.device != NULL)
+	    clip_wl.regular.available = true;
+	else
+	{
+	    // Shouldn't happen
+	    vwl_data_device_manager_discard(clip_wl.regular.manager);
+	    clip_wl.regular.manager = NULL;
+	    return FAIL;
+	}
+    }
+
+    // If we still don't support the primary selection, try finding one for it
+    // specifically.
+    if (!(supported & WAYLAND_SELECTION_PRIMARY))
+    {
+	clip_wl.primary.manager = vwl_connection_get_data_device_manager(
+		wayland_ct, WAYLAND_SELECTION_PRIMARY, &supported);
+
+	if (clip_wl.primary.manager != NULL)
+	{
+	    clip_wl.primary.device = vwl_data_device_manager_get_data_device(
+		    clip_wl.primary.manager, clip_wl.seat);
+
+	    if (clip_wl.primary.device != NULL)
+		clip_wl.primary.available = true;
+	    else
+	    {
+		vwl_data_device_manager_discard(clip_wl.primary.manager);
+		clip_wl.primary.manager = NULL;
+	    }
+	}
+    }
+
+    if (clip_wl.regular.available && !clip_wl.primary.available)
+    {
+	// The protocol supports both regular and primary selections, just use
+	// one data device manager and one data device. Or the primary selection
+	// is not supported, make it point to the regular selection instead.
+	clip_wl.primary.available = true;
+	clip_wl.primary.manager = clip_wl.regular.manager;
+	clip_wl.primary.device = clip_wl.regular.device;
+    }
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    if (clip_wl.regular.available
+	    && clip_wl.regular.manager->protocol == VWL_DATA_PROTOCOL_CORE
+	    && clip_wl_focus_stealing_available())
+	clip_wl.regular.requires_focus = true;
+    if (clip_wl.primary.available
+	    && clip_wl.primary.manager->protocol == VWL_DATA_PROTOCOL_PRIMARY
+	    && clip_wl_focus_stealing_available())
+	clip_wl.primary.requires_focus = true;
+
+    if (clip_wl.regular.requires_focus || clip_wl.primary.requires_focus)
+    {
+	// Initialize buffer to use for focus stealing
+	clip_wl.fs_buffer = clip_wl_init_buffer_store(1, 1);
+    }
+#  endif
+
+    if (!clip_wl.regular.available && !clip_wl.primary.available)
+	return FAIL;
+
+    // Start listening for selection updates
+    if (clip_wl.regular.device != NULL)
+	vwl_data_device_add_listener(clip_wl.regular.device,
+		&vwl_data_device_listener, NULL);
+    // Don't want to listen to the same data device twice
+    if (clip_wl.primary.device != NULL
+	    && clip_wl.primary.device != clip_wl.regular.device)
+	vwl_data_device_add_listener(clip_wl.primary.device,
+		&vwl_data_device_listener, NULL);
+
+    return OK;
+}
+
+    void
+clip_uninit_wayland(void)
+{
+    clip_wl_selection_T *sel;
+
+    if (clipmethod == CLIPMETHOD_WAYLAND)
+    {
+	if (clip_star.owned)
+	    clip_lose_selection(&clip_star);
+	if (clip_plus.owned)
+	    clip_lose_selection(&clip_plus);
+    }
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    clip_wl_destroy_buffer_store(clip_wl.fs_buffer);
+#  endif
+
+    // Don't want to double free
+    if (clip_wl.regular.manager != clip_wl.primary.manager)
+	vwl_data_device_manager_discard(clip_wl.primary.manager);
+    vwl_data_device_manager_discard(clip_wl.regular.manager);
+
+    if (clip_wl.regular.device != clip_wl.primary.device)
+	vwl_data_device_destroy(clip_wl.primary.device);
+    vwl_data_device_destroy(clip_wl.regular.device);
+
+    sel = &clip_wl.regular;
+    while (true)
+    {
+	mnv_free(sel->contents);
+	vwl_data_source_destroy(sel->source);
+	vwl_data_offer_destroy(sel->offer);
+	sel->available = false;
+
+	if (sel == &clip_wl.primary)
+	    break;
+	sel = &clip_wl.primary;
+    }
+
+    mnv_memset(&clip_wl, 0, sizeof(clip_wl));
+}
+
+    int
+clip_reset_wayland(void)
+{
+    wayland_uninit_connection();
+
+    if (wayland_init_connection(wayland_display_name) == FAIL
+	    || clip_init_wayland() == FAIL)
+	return FAIL;
+
+    choose_clipmethod();
+    return OK;
+}
+
+/*
+ * Read data from a file descriptor and write it to the given clipboard.
+ */
+    static void
+clip_wl_receive_data(Clipboard_T *cbd, const char *mime_type, int fd)
+{
+    char_u	*start, *final, *enc;
+    garray_T	buf;
+    int		motion_type = MAUTO;
+    ssize_t	r = 0;
+#  ifndef HAVE_SELECT
+    struct pollfd   pfd;
+
+    pfd.fd = fd;
+    pfd.events = POLLIN;
+#  else
+    fd_set rfds;
+    struct timeval  tv;
+
+    FD_ZERO(&rfds);
+    FD_SET(fd, &rfds);
+#  endif
+
+    // Make pipe (read end) non-blocking
+    if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK) == -1)
+	return;
+
+    ga_init2(&buf, 1, 4096);
+
+    // 4096 bytes seems reasonable for initial buffer size, memory is cheap
+    // anyways.
+    if (ga_grow(&buf, 4096) == FAIL)
+	return;
+
+    start = buf.ga_data;
+
+#  ifndef HAVE_SELECT
+    while (poll(&pfd, 1, p_wtm) > 0)
+#  else
+    while (tv.tv_sec = p_wtm / 1000, tv.tv_usec = (p_wtm % 1000) * 1000,
+	    select(fd + 1, &rfds, NULL, NULL, &tv) > 0)
+#  endif
+    {
+	r = read(fd, start, buf.ga_maxlen - 1 - buf.ga_len);
+
+	if (r == 0)
+	    break;
+	else if (r < 0)
+	{
+	    if (errno == EAGAIN || errno == EINTR)
+		continue;
+	    break;
+	}
+
+	start += r;
+	buf.ga_len += r;
+
+	// Realloc if we are at the end of the buffer
+	if (buf.ga_len >= buf.ga_maxlen - 1)
+	{
+	    if (ga_grow(&buf, 8192) == FAIL)
+		break;
+	    start = (char_u *)buf.ga_data + buf.ga_len;
+	}
+    }
+
+    if (buf.ga_len == 0)
+    {
+	clip_free_selection(cbd); // Nothing received, clear register
+	ga_clear(&buf);
+	return;
+    }
+
+    final = buf.ga_data;
+
+    if (STRCMP(mime_type, MNV_ATOM_NAME) == 0 && buf.ga_len >= 2)
+    {
+	motion_type = *final++;
+	buf.ga_len--;
+    }
+    else if (STRCMP(mime_type, MNVENC_ATOM_NAME) == 0 && buf.ga_len >= 3)
+    {
+	mnvconv_T   conv;
+	int	    convlen;
+
+	// first byte is motion type
+	motion_type = *final++;
+	buf.ga_len--;
+
+	// Get encoding of selection
+	enc = final;
+
+	// Skip the encoding type including null terminator in final text
+	final += STRLEN(final) + 1;
+
+	// Subtract pointers to get length of encoding;
+	buf.ga_len -= final - enc;
+
+	conv.vc_type = CONV_NONE;
+	convert_setup(&conv, enc, p_enc);
+	if (conv.vc_type != CONV_NONE)
+	{
+	   char_u *tmp;
+
+	   convlen = buf.ga_len;
+	   tmp = string_convert(&conv, final, &convlen);
+	   buf.ga_len = convlen;
+	   if (tmp != NULL)
+		final = tmp;
+	   convert_setup(&conv, NULL, NULL);
+	}
+    }
+
+    clip_yank_selection(motion_type, final, (long)buf.ga_len, cbd);
+    ga_clear(&buf);
+}
+
+/*
+ * Get the current selection and fill the respective register for cbd with the
+ * data.
+ */
+    static void
+clip_wl_request_selection(Clipboard_T *cbd)
+{
+    clip_wl_selection_T *sel = clip_wl_get_selection_from_cbd(cbd);
+    int			fds[2];
+    int			mime_types_len;
+    const char		**mime_types;
+    const char		*chosen_mime = NULL;
+
+    if (!sel->available)
+	goto clear;
+
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    if (sel->requires_focus)
+    {
+	// We don't care about the on_focus callback since once we gain
+	// focus the data offer events will come immediately.
+	if (clip_wl_init_fs_surface(clip_wl.seat,
+		    clip_wl.fs_buffer, NULL, NULL) == FAIL)
+	    goto clear;
+    }
+    else
+#  endif
+    {
+	// Dispatch any events that still queued up before checking for a data
+	// offer.
+	if (vwl_connection_roundtrip(wayland_ct) == FAIL)
+	    goto clear;
+    }
+
+    if (sel->offer == NULL)
+	goto clear;
+
+    mime_types_len = sel->offer->mime_types.ga_len;
+    mime_types = sel->offer->mime_types.ga_data;
+
+    // Choose mime type to receive from. Mime types with a lower index in the
+    // "supported_mimes" array are prioritized over ones after it.
+    for (int i = 0; i < (int)ARRAY_LENGTH(supported_mimes)
+	    && chosen_mime == NULL; i++)
+    {
+	for (int k = 0; k < mime_types_len && chosen_mime == NULL; k++)
+	    if (STRCMP(mime_types[k], supported_mimes[i]) == 0)
+		chosen_mime = supported_mimes[i];
+    }
+
+    if (chosen_mime == NULL || pipe(fds) == -1)
+	goto clear;
+
+    vwl_data_offer_receive(sel->offer, chosen_mime, fds[1]);
+
+    close(fds[1]); // Close before we read data so that when the source client
+		   // closes their end we receive an EOF.
+
+    if (vwl_connection_flush(wayland_ct) >= 0)
+	clip_wl_receive_data(cbd, chosen_mime, fds[0]);
+
+    close(fds[0]);
+
+    return;
+clear:
+    clip_free_selection(cbd);
+}
+
+    static void
+vwl_data_source_listener_event_send(
+    void *data,
+    vwl_data_source_T *source UNUSED,
+    const char *mime_type,
+    int32_t fd
+)
+{
+    clip_wl_selection_T *sel = data;
+    Clipboard_T		*cbd = clip_wl_get_cbd_from_selection(sel);
+    bool		have_mime = false;
+    int			motion_type;
+    long_u		length;
+    char_u		*string; // Will be reallocated to a bigger size if
+				 // needed.
+    int			offset = 0;
+    bool		is_mnv, is_mnvenc;
+    size_t		total = 0;
+#  ifndef HAVE_SELECT
+    struct pollfd   pfd;
+
+    pfd.fd = fd;
+    pfd.events = POLLOUT;
+#  else
+    fd_set	    wfds;
+    struct timeval  tv;
+
+    FD_ZERO(&wfds);
+    FD_SET(fd, &wfds);
+#  endif
+
+    // Check if we actually have mime type
+    for (int i = 0; i < (int)ARRAY_LENGTH(supported_mimes); i++)
+	if (STRCMP(supported_mimes[i], mime_type) == 0)
+	{
+	    have_mime = true;
+	    break;
+	}
+
+    if (!have_mime)
+	goto exit;
+
+    // First byte sent is motion type for mnv specific formats. For the mnvenc
+    // format, after the first byte is the encoding type, which is null
+    // terminated.
+
+    is_mnvenc = STRCMP(mime_type, MNVENC_ATOM_NAME) == 0;
+    is_mnv = STRCMP(mime_type, MNV_ATOM_NAME) == 0;
+
+    if (is_mnvenc)
+	offset += 2 + STRLEN(p_enc);
+    else if (is_mnv)
+	offset += 1;
+
+    clip_get_selection(cbd);
+    motion_type = clip_convert_selection_offset(&string, &length, offset, cbd);
+
+    if (motion_type < 0)
+	goto exit;
+
+    if (is_mnvenc)
+    {
+	string[0] = (char_u)motion_type;
+	// Use mnv_strncpy for safer copying
+	mnv_strncpy(string + 1, p_enc, STRLEN(p_enc));
+    }
+    else if (is_mnv)
+	string[0] = (char_u)motion_type;
+
+
+    while (total < (size_t)length &&
+#  ifndef HAVE_SELECT
+	    poll(&pfd, 1, p_wtm) > 0)
+#  else
+	    ((tv.tv_sec = p_wtm / 1000, tv.tv_usec = (p_wtm % 1000) * 1000),
+	    select(fd + 1, NULL, &wfds, NULL, &tv) > 0))
+#  endif
+    {
+	ssize_t w = write(fd, string + total, length - total);
+
+	if (w == -1)
+	    break;
+	total += w;
+    }
+
+    mnv_free(string);
+exit:
+    close(fd);
+}
+
+    static void
+vwl_data_source_listener_event_cancelled(
+	void *data,
+	vwl_data_source_T *source UNUSED)
+{
+    clip_wl_selection_T *sel = data;
+    Clipboard_T		*cbd = clip_wl_get_cbd_from_selection(sel);
+
+    clip_lose_selection(cbd);
+}
+
+static const vwl_data_source_listener_T vwl_data_source_listener = {
+    .send = vwl_data_source_listener_event_send,
+    .cancelled = vwl_data_source_listener_event_cancelled
+};
+
+    static void
+clip_wl_do_set_selection(void *data, uint32_t serial)
+{
+    clip_wl_selection_T *sel = data;
+    wayland_selection_T sel_type = clip_wl_get_selection_type(sel);
+
+    vwl_data_device_set_selection(sel->device, sel->source, serial, sel_type);
+
+    sel->own_success = (vwl_connection_roundtrip(wayland_ct) == OK);
+}
+
+/*
+ * Own the selection that cbd corresponds to. Start listening for requests from
+ * other Wayland clients so they can receive data from us. Returns OK on success
+ * and FAIL on failure.
+ */
+    static int
+clip_wl_own_selection(Clipboard_T *cbd)
+{
+    clip_wl_selection_T *sel = clip_wl_get_selection_from_cbd(cbd);
+    wayland_selection_T sel_type = clip_wl_get_selection_type(sel);
+
+    if (!sel->available || vwl_connection_roundtrip(wayland_ct) == FAIL)
+	return FAIL;
+
+    if (sel->source != NULL)
+    {
+	if (sel_type == WAYLAND_SELECTION_PRIMARY)
+	    // We already own the selection, ignore (only do this for primary
+	    // selection). We don't re set the selection because then we would
+	    // be setting the selection every time the user moves the visual
+	    // selection cursor, which is messy and inefficient. Some
+	    // applications like Google Chrome do it this way however.
+	    return OK;
+	else if (sel_type == WAYLAND_SELECTION_REGULAR)
+	{
+	    // Technically we don't need to do this as we already own the
+	    // selection, however if a user yanks text a second time, the
+	    // text yanked won't appear in their clipboard manager if they are
+	    // using one.
+	    //
+	    // This can be unexpected behaviour for the user so its probably
+	    // better to do it this way. Additionally other Wayland applications
+	    // seem to set the selection every time.
+	    vwl_data_source_destroy(sel->source);
+	}
+	else
+	    // Shouldn't happen
+	    return FAIL;
+    }
+
+    sel->source = vwl_data_device_manager_create_data_source(sel->manager);
+    vwl_data_source_add_listener(sel->source, &vwl_data_source_listener, sel);
+
+    // Advertise mime types
+    for (int i = 0; i < (int)ARRAY_LENGTH(supported_mimes); i++)
+	vwl_data_source_offer(sel->source, supported_mimes[i]);
+
+    sel->own_success = false;
+#  ifdef FEAT_WAYLAND_CLIPBOARD_FS
+    if (sel->requires_focus)
+    {
+	if (clip_wl_init_fs_surface(clip_wl.seat, clip_wl.fs_buffer,
+		    clip_wl_do_set_selection, sel) == FAIL)
+	    goto fail;
+    }
+    else
+#  endif
+	clip_wl_do_set_selection(sel, 0);
+
+    if (!sel->own_success)
+	goto fail;
+
+    return OK;
+fail:
+    vwl_data_source_destroy(sel->source);
+    sel->source = NULL;
+    return FAIL;
+}
+
+/*
+ * Disown the selection that cbd corresponds to.
+ */
+    static void
+clip_wl_lose_selection(Clipboard_T *cbd)
+{
+    clip_wl_selection_T *sel = clip_wl_get_selection_from_cbd(cbd);
+
+    if (!sel->available)
+	return;
+
+    vwl_data_source_destroy(sel->source);
+    sel->source = NULL;
+}
+
+/*
+ * Send the current selection to the clipboard. Do nothing for Wayland because
+ * we will fill in the selection only when requested by another client.
+ */
+    static void
+clip_wl_set_selection(Clipboard_T *cbd UNUSED)
+{
+}
+
+#  if defined(USE_SYSTEM)
+/*
+ * Return true if we own the selection corresponding to cbd or another client
+ * does.
+ */
+    static bool
+clip_wl_owner_exists(Clipboard_T *cbd)
+{
+    clip_wl_selection_T *sel = clip_wl_get_selection_from_cbd(cbd);
+
+    if (vwl_connection_roundtrip(wayland_ct) == FAIL)
+	return false;
+
+    return sel->available && (sel->source != NULL || sel->offer != NULL);
+}
+#  endif
+
+# endif // FEAT_WAYLAND_CLIPBOARD
+
+#endif // FEAT_CLIPBOARD
+
+#ifdef HAVE_CLIPMETHOD
+
+/*
+ * Returns the first method for accessing the clipboard that is available/works,
+ * depending on the order of values in str.
+ */
+    static clipmethod_T
+get_clipmethod(char_u *str)
+{
+    int		len	= (int)STRLEN(str) + 1;
+    char_u	*buf	= alloc(len);
+
+    if (buf == NULL)
+	return CLIPMETHOD_FAIL;
+
+    clipmethod_T ret = CLIPMETHOD_FAIL;
+    char_u	*p = str;
+
+    while (*p != NUL)
+    {
+	clipmethod_T method = CLIPMETHOD_NONE;
+
+	(void)copy_option_part(&p, buf, len, ",");
+
+	if (STRCMP(buf, "wayland") == 0)
+	{
+# ifdef FEAT_GUI
+	    if (!gui.in_use)
+# endif
+	    {
+# ifdef FEAT_WAYLAND_CLIPBOARD
+		if (clip_wl.regular.available || clip_wl.primary.available)
+		    method = CLIPMETHOD_WAYLAND;
+# endif
+	    }
+	}
+	else if (STRCMP(buf, "x11") == 0)
+	{
+# ifdef FEAT_GUI
+	    if (!gui.in_use)
+# endif
+	    {
+# ifdef FEAT_XCLIPBOARD
+		// x_IOerror_handler() in os_unix.c should set xterm_dpy to NULL if
+		// we lost connection to the X server.
+		if (xterm_dpy != NULL)
+		{
+		    // If the X connection is lost then that handler will longjmp
+		    // somewhere else, in that case we will call choose_clipmethod()
+		    // again from there, and this if block won't be executed since
+		    // xterm_dpy will be set to NULL.
+		    xterm_update();
+		    method = CLIPMETHOD_X11;
+		}
+# endif
+	    }
+	}
+	else
+	{
+# ifdef FEAT_CLIPBOARD_PROVIDER
+	    // Check if name matches a clipboard provider
+	    int r = clip_provider_is_available(buf);
+
+	    if (r == 1)
+	    {
+		method = CLIPMETHOD_PROVIDER;
+		if (ret == CLIPMETHOD_FAIL)
+		{
+		    mnv_free(clip_provider);
+		    clip_provider = mnv_strsave(buf);
+		    if (clip_provider == NULL)
+			goto fail;
+		}
+	    }
+	    else if (r == -1)
+# endif
+	    {
+# ifdef FEAT_CLIPBOARD_PROVIDER
+fail:
+# endif
+		ret = CLIPMETHOD_FAIL;
+		goto exit;
+	    }
+	}
+
+	// Keep on going in order to catch errors
+	if (method != CLIPMETHOD_NONE && ret == CLIPMETHOD_FAIL)
+	    ret = method;
+    }
+
+    // No match found, use "none".
+    ret = (ret == CLIPMETHOD_FAIL) ? CLIPMETHOD_NONE : ret;
+
+exit:
+    mnv_free(buf);
+    return ret;
+}
+
+
+/*
+ * Returns name of clipmethod in a statically allocated string.
+ */
+    static char_u *
+clipmethod_to_str(clipmethod_T method)
+{
+    switch(method)
+    {
+	case CLIPMETHOD_WAYLAND:
+	    return (char_u *)"wayland";
+	case CLIPMETHOD_X11:
+	    return (char_u *)"x11";
+	case CLIPMETHOD_PROVIDER:
+# ifdef FEAT_EVAL
+	    return clip_provider;
+# endif
+	default:
+	    return (char_u *)"none";
+    }
+}
+
+/*
+ * Sets the current clipmethod to use given by `get_clipmethod()`. Returns an
+ * error message on failure else NULL.
+ */
+    char *
+choose_clipmethod(void)
+{
+    clipmethod_T method = get_clipmethod(p_cpm);
+
+    if (method == CLIPMETHOD_FAIL)
+	return e_invalid_argument;
+
+// If GUI is running or we are not on a system with Wayland or X11, then always
+// return CLIPMETHOD_NONE. System or GUI clipboard handling always overrides.
+// This is unless a provider is being used.
+# if defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)
+#  if defined(FEAT_GUI)
+    if (method != CLIPMETHOD_PROVIDER && gui.in_use)
+    {
+#   ifdef FEAT_WAYLAND
+	// We only interact with Wayland for the clipboard, we can just deinit
+	// everything.
+	wayland_uninit_connection();
+#   endif
+
+	method = CLIPMETHOD_NONE;
+	goto lose_sel_exit;
+    }
+#  endif
+# else
+    // If on a system like windows or macos, then clipmethod is irrelevant, we
+    // use their way of accessing the clipboard. This is unless we are using the
+    // clipboard provider
+#  ifdef FEAT_CLIPBOARD_PROVIDER
+    if (method != CLIPMETHOD_PROVIDER)
+#  endif
+    {
+	method = CLIPMETHOD_NONE;
+	goto exit;
+    }
+# endif
+
+# ifdef FEAT_CLIPBOARD
+    // Deinitialize clipboard if there is no way to access clipboard
+    if (method == CLIPMETHOD_NONE)
+	clip_init(FALSE);
+    // If we have a clipmethod that works now, then initialize clipboard
+    else if (clipmethod == CLIPMETHOD_NONE && method != CLIPMETHOD_NONE)
+    {
+	clip_init(TRUE);
+	did_warn_clipboard = false;
+    }
+    // Disown clipboard if we are switching to a new method
+    else if (clipmethod != CLIPMETHOD_NONE && method != clipmethod)
+    {
+#  if (defined(FEAT_XCLIPBOARD) || defined(FEAT_WAYLAND_CLIPBOARD)) \
+	&& defined(FEAT_GUI)
+lose_sel_exit:
+#  endif
+	if (clip_star.owned)
+	    clip_lose_selection(&clip_star);
+	if (clip_plus.owned)
+	    clip_lose_selection(&clip_plus);
+
+#  if defined(FEAT_GUI)
+	if (!gui.in_use)
+#  endif
+	{
+	    clip_init(TRUE);
+	    did_warn_clipboard = false;
+	}
+    }
+# endif // FEAT_CLIPBOARD
+
+# if !defined(FEAT_XCLIPBOARD) && !defined(FEAT_WAYLAND_CLIPBOARD)
+exit:
+# endif
+
+    clipmethod = method;
+
+# ifdef FEAT_EVAL
+    set_mnv_var_string(VV_CLIPMETHOD, (char_u*)clipmethod_to_str(method), -1);
+# endif
+
+    return NULL;
+}
+
+/*
+ * Call choose_clipmethod().
+ */
+    void
+ex_clipreset(exarg_T *eap UNUSED)
+{
+    clipmethod_T prev = clipmethod;
+
+    choose_clipmethod();
+
+    if (clipmethod == CLIPMETHOD_NONE)
+	smsg(_("Could not find a way to access the clipboard."));
+    else if (clipmethod != prev)
+	smsg(_("Switched to clipboard method '%s'."),
+		clipmethod_to_str(clipmethod));
+}
+
+/*
+ * Adjust the register name pointed to with "rp" for the clipboard being
+ * used always and the clipboard being available.
+ */
+    void
+adjust_clip_reg(int *rp)
+{
+# ifdef FEAT_CLIPBOARD_PROVIDER
+    if (clipmethod == CLIPMETHOD_PROVIDER)
+    {
+	if (*rp == 0 && clip_unnamed != 0)
+	    *rp = ((clip_unnamed & CLIP_UNNAMED_PLUS)) ? '+' : '*';
+	return;
+    }
+# endif
+# ifdef FEAT_CLIPBOARD
+    // If no reg. specified, and "unnamed" or "unnamedplus" is in 'clipboard',
+    // use '*' or '+' reg, respectively. "unnamedplus" prevails.
+    if (*rp == 0 && (clip_unnamed != 0 || clip_unnamed_saved != 0))
+    {
+	if (clip_unnamed != 0)
+	    *rp = ((clip_unnamed & CLIP_UNNAMED_PLUS) && clip_plus.available)
+								  ? '+' : '*';
+	else
+	    *rp = ((clip_unnamed_saved & CLIP_UNNAMED_PLUS)
+					   && clip_plus.available) ? '+' : '*';
+    }
+    if ((!clip_star.available && *rp == '*') ||
+	   (!clip_plus.available && *rp == '+'))
+    {
+	msg_warn_missing_clipboard();
+	*rp = 0;
+    }
+# endif
+}
+
+/*
+ * Extract the items in the 'clipboard' option and set global values.
+ * Return an error message or NULL for success.
+ */
+    char *
+did_set_clipboard(optset_T *args UNUSED)
+{
+    int		new_unnamed = 0;
+# ifdef FEAT_CLIPBOARD
+    int		new_autoselect_star = FALSE;
+    int		new_autoselect_plus = FALSE;
+    int		new_autoselectml = FALSE;
+    int		new_html = FALSE;
+# endif
+    regprog_T	*new_exclude_prog = NULL;
+    char	*errmsg = NULL;
+    char_u	*p;
+
+    for (p = p_cb; *p != NUL; )
+    {
+	// Note: Keep this in sync with p_cb_values.
+	if (STRNCMP(p, "unnamed", 7) == 0 && (p[7] == ',' || p[7] == NUL))
+	{
+	    new_unnamed |= CLIP_UNNAMED;
+	    p += 7;
+	}
+	else if (STRNCMP(p, "unnamedplus", 11) == 0
+					    && (p[11] == ',' || p[11] == NUL))
+	{
+	    new_unnamed |= CLIP_UNNAMED_PLUS;
+	    p += 11;
+	}
+# ifdef FEAT_CLIPBOARD
+	else if (STRNCMP(p, "autoselect", 10) == 0
+					    && (p[10] == ',' || p[10] == NUL))
+	{
+	    new_autoselect_star = TRUE;
+	    p += 10;
+	}
+	else if (STRNCMP(p, "autoselectplus", 14) == 0
+					    && (p[14] == ',' || p[14] == NUL))
+	{
+	    new_autoselect_plus = TRUE;
+	    p += 14;
+	}
+	else if (STRNCMP(p, "autoselectml", 12) == 0
+					    && (p[12] == ',' || p[12] == NUL))
+	{
+	    new_autoselectml = TRUE;
+	    p += 12;
+	}
+	else if (STRNCMP(p, "html", 4) == 0 && (p[4] == ',' || p[4] == NUL))
+	{
+	    new_html = TRUE;
+	    p += 4;
+	}
+	else if (STRNCMP(p, "exclude:", 8) == 0 && new_exclude_prog == NULL)
+	{
+	    p += 8;
+	    new_exclude_prog = mnv_regcomp(p, RE_MAGIC);
+	    if (new_exclude_prog == NULL)
+		errmsg = e_invalid_argument;
+	    break;
+	}
+# endif
+	else
+	{
+	    errmsg = e_invalid_argument;
+	    break;
+	}
+	if (*p == ',')
+	    ++p;
+    }
+    if (errmsg == NULL)
+    {
+# ifdef FEAT_CLIPBOARD
+	if (global_busy)
+	    // clip_unnamed will be reset to clip_unnamed_saved
+	    // at end_global_changes
+	    clip_unnamed_saved = new_unnamed;
+	else
+# endif
+	    clip_unnamed = new_unnamed;
+# ifdef FEAT_CLIPBOARD
+	clip_autoselect_star = new_autoselect_star;
+	clip_autoselect_plus = new_autoselect_plus;
+	clip_autoselectml = new_autoselectml;
+	clip_html = new_html;
+	mnv_regfree(clip_exclude_prog);
+	clip_exclude_prog = new_exclude_prog;
+# endif
+# ifdef FEAT_GUI_GTK
+	if (gui.in_use)
+	{
+	    gui_gtk_set_selection_targets((GdkAtom)GDK_SELECTION_PRIMARY);
+	    gui_gtk_set_selection_targets((GdkAtom)clip_plus.gtk_sel_atom);
+	    gui_gtk_set_dnd_targets();
+	}
+# endif
+    }
+    else
+	mnv_regfree(new_exclude_prog);
+
+    return errmsg;
+}
+
+#endif // HAVE_CLIPMETHOD
+
+#ifdef FEAT_CLIPBOARD_PROVIDER
+
+/*
+ * Check if a clipboard provider with given name is available. Returns 1 if available,
+ * 0 if not available, and -1 on error
+ */
+    static int
+clip_provider_is_available(char_u *provider)
+{
+    dict_T	*providers = get_mnv_var_dict(VV_CLIPPROVIDERS);
+    typval_T	provider_tv = {0};
+    callback_T	callback = {0};
+    typval_T	rettv = {0};
+    typval_T	func_tv = {0};
+    int		res = 0;
+
+    if (dict_get_tv(providers, (char *)provider, &provider_tv) == FAIL
+	    || provider_tv.v_type != VAR_DICT)
+	// clipboard provider not defined
+	return -1;
+
+    if (dict_get_tv(provider_tv.vval.v_dict, "available", &func_tv) == FAIL)
+    {
+	clear_tv(&provider_tv);
+	// If "available" function not specified assume always TRUE
+	return 1;
+    }
+
+    if ((callback = get_callback(&func_tv)).cb_name == NULL)
+	goto fail;
+
+    if (call_callback(&callback, -1, &rettv, 0, NULL) == FAIL ||
+	    (rettv.v_type != VAR_BOOL && rettv.v_type != VAR_NUMBER))
+	goto fail;
+
+    if (rettv.vval.v_number)
+	res = 1;
+
+    if (FALSE)
+fail:
+	res = -1;
+
+    free_callback(&callback);
+    clear_tv(&func_tv);
+    clear_tv(&rettv);
+    clear_tv(&provider_tv);
+
+    return res;
+}
+
+/*
+ * Get the specified callback "function" from the provider dictionary for
+ * register "reg".
+ */
+    static int
+clip_provider_get_callback(
+	char_u *reg,
+	char_u *provider,
+	char_u *function,
+	callback_T *callback)
+{
+    dict_T	*providers = get_mnv_var_dict(VV_CLIPPROVIDERS);
+    typval_T	provider_tv;
+    typval_T	action_tv;
+    typval_T	func_tv;
+    callback_T	cb;
+
+    if (dict_get_tv(providers, (char *)provider, &provider_tv) == FAIL)
+	return FAIL;
+    else if (provider_tv.v_type != VAR_DICT)
+    {
+	clear_tv(&provider_tv);
+	return FAIL;
+    }
+    else if (dict_get_tv(
+		provider_tv.vval.v_dict,
+		(char *)function,
+		&action_tv) == FAIL)
+    {
+	clear_tv(&provider_tv);
+	return FAIL;
+    }
+    else if (action_tv.v_type != VAR_DICT)
+    {
+	clear_tv(&provider_tv);
+	clear_tv(&action_tv);
+	return FAIL;
+    }
+    else if (dict_get_tv(action_tv.vval.v_dict, (char *)reg, &func_tv) == FAIL)
+    {
+	clear_tv(&provider_tv);
+	clear_tv(&action_tv);
+	return FAIL;
+    }
+    else if ((cb = get_callback(&func_tv)).cb_name == NULL)
+    {
+	clear_tv(&provider_tv);
+	clear_tv(&action_tv);
+	clear_tv(&func_tv);
+	return FAIL;
+    }
+    clear_tv(&provider_tv);
+    clear_tv(&action_tv);
+
+    // func_tv owns the function name, so we must make a copy for the callback
+    set_callback(callback, &cb);
+    clear_tv(&func_tv);
+    return OK;
+}
+
+    static void
+clip_provider_copy(char_u *reg, char_u *provider)
+{
+    callback_T	callback;
+    typval_T	rettv;
+    typval_T	argvars[4];
+    yankreg_T	*y_ptr;
+    char_u	type[2 + NUMBUFLEN] = {0};
+    list_T	*list = NULL;
+
+    if (clip_provider_get_callback(
+		reg,
+		provider,
+		(char_u *)"copy",
+		&callback) == FAIL)
+	return;
+
+    // Convert register type into a string
+    if (*reg == '+')
+	y_ptr = get_y_register(REAL_PLUS_REGISTER);
+    else
+	y_ptr = get_y_register(STAR_REGISTER);
+
+    switch (y_ptr->y_type)
+    {
+	case MCHAR:
+	    type[0] = 'v';
+	    break;
+	case MLINE:
+	    type[0] = 'V';
+	    break;
+	case MBLOCK:
+	    sprintf((char *)type, "%c%d", Ctrl_V, y_ptr->y_width + 1);
+	    break;
+	default:
+	    type[0] = 0;
+	    break;
+    }
+
+    argvars[0].v_type = VAR_STRING;
+    argvars[0].vval.v_string = reg;
+
+    argvars[1].v_type = VAR_STRING;
+    argvars[1].vval.v_string = type;
+
+    // Get register contents by creating a list of lines
+    list = list_alloc();
+
+    if (list == NULL)
+    {
+	free_callback(&callback);
+	return;
+    }
+
+    for (int i = 0; i < y_ptr->y_size; i++)
+	if (list_append_string(list, y_ptr->y_array[i].string,
+	    (int)y_ptr->y_array[i].length) == FAIL)
+	{
+	    free_callback(&callback);
+	    list_unref(list);
+	    return;
+	}
+
+    list->lv_refcount++;
+
+    argvars[2].v_type = VAR_LIST;
+    argvars[2].v_lock = VAR_FIXED;
+    argvars[2].vval.v_list = list;
+
+    argvars[3].v_type = VAR_UNKNOWN;
+
+    textlock++;
+    call_callback(&callback, -1, &rettv, 3, argvars);
+    clear_tv(&rettv);
+    textlock--;
+
+    free_callback(&callback);
+    list_unref(list);
+}
+
+    static void
+clip_provider_paste(char_u *reg, char_u *provider)
+{
+    callback_T	callback;
+    typval_T	argvars[2];
+    typval_T	rettv;
+    int		ret;
+    char_u	*reg_type;
+    list_T	*lines;
+
+    if (clip_provider_get_callback(
+		reg,
+		provider,
+		(char_u *)"paste",
+		&callback) == FAIL)
+	return;
+
+    argvars[0].v_type = VAR_STRING;
+    argvars[0].vval.v_string = reg;
+
+    argvars[1].v_type = VAR_UNKNOWN;
+
+    textlock++;
+    ret = call_callback(&callback, -1, &rettv, 1, argvars);
+    textlock--;
+
+    if (ret == FAIL)
+	goto exit;
+    else if (rettv.v_type == VAR_TUPLE
+	    && TUPLE_LEN(rettv.vval.v_tuple) == 2
+	    && TUPLE_ITEM(rettv.vval.v_tuple, 0)->v_type == VAR_STRING
+	    && TUPLE_ITEM(rettv.vval.v_tuple, 1)->v_type == VAR_LIST)
+    {
+	reg_type = TUPLE_ITEM(rettv.vval.v_tuple, 0)->vval.v_string;
+	lines = TUPLE_ITEM(rettv.vval.v_tuple, 1)->vval.v_list;
+    }
+    else if (rettv.v_type == VAR_LIST
+	    && rettv.vval.v_list->lv_len == 2
+	    && rettv.vval.v_list->lv_first->li_tv.v_type == VAR_STRING
+	    && rettv.vval.v_list->lv_first->li_next->li_tv.v_type == VAR_LIST)
+    {
+	reg_type = rettv.vval.v_list->lv_first->li_tv.vval.v_string;
+	lines = rettv.vval.v_list->lv_first->li_next->li_tv.vval.v_list;
+    }
+    else
+	goto exit;
+
+    {
+	char_u		yank_type = MAUTO;
+	long		block_len = -1;
+	yankreg_T	*y_ptr, *cur_y_ptr;
+	char_u		**lstval;
+	char_u		**allocval;
+	char_u		buf[NUMBUFLEN];
+	char_u		**curval;
+	char_u		**curallocval;
+	char_u		*strval;
+	listitem_T	*li;
+	int		len;
+
+	// If the list is NULL handle like an empty list.
+	len = lines == NULL ? 0 : lines->lv_len;
+
+	// First half: use for pointers to result lines; second half: use for
+	// pointers to allocated copies.
+	lstval = ALLOC_MULT(char_u *, (len + 1) * 2);
+	if (lstval == NULL)
+	    goto exit;
+	curval = lstval;
+	allocval = lstval + len + 2;
+	curallocval = allocval;
+
+	if (lines != NULL)
+	{
+	    CHECK_LIST_MATERIALIZE(lines);
+	    FOR_ALL_LIST_ITEMS(lines, li)
+	    {
+		strval = tv_get_string_buf_chk(&li->li_tv, buf);
+		if (strval == NULL)
+		    goto free_lstval;
+		if (strval == buf)
+		{
+		    // Need to make a copy, next tv_get_string_buf_chk() will
+		    // overwrite the string.
+		    strval = mnv_strsave(buf);
+		    if (strval == NULL)
+			goto free_lstval;
+		    *curallocval++ = strval;
+		}
+		*curval++ = strval;
+	    }
+	}
+	*curval++ = NULL;
+
+	if (*reg_type != NUL && (STRLEN(reg_type) <= 0
+		|| get_yank_type(&reg_type, &yank_type, &block_len) == FAIL))
+	{
+	    emsg(e_invalid_argument);
+	    goto free_lstval;
+	}
+
+	if (*reg == '+')
+	    y_ptr = get_y_register(REAL_PLUS_REGISTER);
+	else
+	    y_ptr = get_y_register(STAR_REGISTER);
+
+	// Free previous register contents
+	cur_y_ptr = get_y_current();
+	set_y_current(y_ptr);
+
+	free_yank_all();
+	get_y_current()->y_size = 0;
+
+	set_y_current(cur_y_ptr);
+
+	str_to_reg(y_ptr,
+		yank_type,
+		(char_u *)lstval,
+		-1,
+		block_len,
+		TRUE);
+
+free_lstval:
+	while (curallocval > allocval)
+	    mnv_free(*--curallocval);
+	mnv_free(lstval);
+    }
+
+exit:
+    free_callback(&callback);
+    clear_tv(&rettv);
+}
+
+// Used to stop calling the provider callback every time there is an update.
+// This prevents unnecessary calls when accessing the provider often in an
+// interval.
+//
+// If -1 then allow provider callback to be called then set to one. Default
+// value (is allowed) is -2.
+static int star_pause_count = -2, plus_pause_count = -2;
+
+    void
+call_clip_provider_request(int reg)
+{
+    if (clipmethod != CLIPMETHOD_PROVIDER)
+	return;
+
+    if (reg == '+' && plus_pause_count < 0)
+    {
+	if (plus_pause_count == -1)
+	    plus_pause_count = 1;
+	clip_provider_paste((char_u *)"+", clip_provider);
+    }
+    else if (reg == '*' && star_pause_count < 0)
+    {
+	if (star_pause_count == -1)
+	    star_pause_count = 1;
+	clip_provider_paste((char_u *)"*", clip_provider);
+    }
+    else
+	return;
+}
+
+    void
+call_clip_provider_set(int reg)
+{
+    if (clipmethod != CLIPMETHOD_PROVIDER)
+	return;
+
+    if (reg == '+' && plus_pause_count < 0)
+    {
+	if (plus_pause_count == -1)
+	    plus_pause_count = 1;
+	clip_provider_copy((char_u *)"+", clip_provider);
+    }
+    else if (reg == '*' && star_pause_count < 0)
+    {
+	if (star_pause_count == -1)
+	    star_pause_count = 1;
+	clip_provider_copy((char_u *)"*", clip_provider);
+    }
+}
+
+/*
+ * Makes it so that the next provider call is only done once any calls after are
+ * ignored, until dec_clip_provider is called the same number of times after
+ * again. Note that this is per clipboard register ("+", "*")
+ */
+    void
+inc_clip_provider(void)
+{
+    plus_pause_count = (plus_pause_count == -2
+	|| plus_pause_count == -1) ? -1 : plus_pause_count + 1;
+    star_pause_count = (star_pause_count == -2
+	|| star_pause_count == -1) ? -1 : star_pause_count + 1;
+}
+
+    void
+dec_clip_provider(void)
+{
+    if (plus_pause_count != -2)
+	plus_pause_count = plus_pause_count == -1 ? -1 : plus_pause_count - 1;
+    if (star_pause_count != -2)
+	star_pause_count = star_pause_count == -1 ? -1 : star_pause_count - 1;
+
+    if (plus_pause_count == 0 || plus_pause_count == -1)
+	plus_pause_count = -2;
+    if (star_pause_count == 0 || star_pause_count == -1)
+	star_pause_count = -2;
+}
+
+#endif // FEAT_CLIPBOARD_PROVIDER