updated for version 7.3.239

Problem:    Python corrects the cursor column without taking 'virtualedit'
	    into account. (lilydjwg)
Solution:   Call check_cursor_col_win().

Author: brammool

src/if_py_both.h

@@ -534,7 +534,6 @@ WindowSetattr(PyObject *self, char *name, PyObject *val)
     {
 	long lnum;
 	long col;
-	long len;
 
 	if (!PyArg_Parse(val, "(ll)", &lnum, &col))
 	    return -1;
@@ -549,18 +548,15 @@ WindowSetattr(PyObject *self, char *name, PyObject *val)
 	if (VimErrorCheck())
 	    return -1;
 
-	/* When column is out of range silently correct it. */
-	len = (long)STRLEN(ml_get_buf(this->win->w_buffer, lnum, FALSE));
-	if (col > len)
-	    col = len;
-
 	this->win->w_cursor.lnum = lnum;
 	this->win->w_cursor.col = col;
 #ifdef FEAT_VIRTUALEDIT
 	this->win->w_cursor.coladd = 0;
 #endif
-	update_screen(VALID);
+	/* When column is out of range silently correct it. */
+	check_cursor_col_win(this->win);
 
+	update_screen(VALID);
 	return 0;
     }
     else if (strcmp(name, "height") == 0)

src/mbyte.c

@@ -3563,15 +3563,16 @@ dbcs_screen_tail_off(base, p)
     void
 mb_adjust_cursor()
 {
-    mb_adjustpos(&curwin->w_cursor);
+    mb_adjustpos(curbuf, &curwin->w_cursor);
 }
 
 /*
  * Adjust position "*lp" to point to the first byte of a multi-byte character.
  * If it points to a tail byte it's moved backwards to the head byte.
  */
     void
-mb_adjustpos(lp)
+mb_adjustpos(buf, lp)
+    buf_T	*buf;
     pos_T	*lp;
 {
     char_u	*p;
@@ -3582,7 +3583,7 @@ mb_adjustpos(lp)
 #endif
 	    )
     {
-	p = ml_get(lp->lnum);
+	p = ml_get_buf(buf, lp->lnum, FALSE);
 	lp->col -= (*mb_head_off)(p, p + lp->col);
 #ifdef FEAT_VIRTUALEDIT
 	/* Reset "coladd" when the cursor would be on the right half of a

src/misc2.c

@@ -333,7 +333,7 @@ coladvance2(pos, addspaces, finetune, wcol)
 #ifdef FEAT_MBYTE
     /* prevent from moving onto a trail byte */
     if (has_mbyte)
-	mb_adjustpos(pos);
+	mb_adjustpos(curbuf, pos);
 #endif
 
     if (col < wcol)
@@ -543,17 +543,27 @@ check_cursor_lnum()
  */
     void
 check_cursor_col()
+{
+    check_cursor_col_win(curwin);
+}
+
+/*
+ * Make sure win->w_cursor.col is valid.
+ */
+    void
+check_cursor_col_win(win)
+    win_T *win;
 {
     colnr_T len;
 #ifdef FEAT_VIRTUALEDIT
-    colnr_T oldcol = curwin->w_cursor.col;
-    colnr_T oldcoladd = curwin->w_cursor.col + curwin->w_cursor.coladd;
+    colnr_T oldcol = win->w_cursor.col;
+    colnr_T oldcoladd = win->w_cursor.col + win->w_cursor.coladd;
 #endif
 
-    len = (colnr_T)STRLEN(ml_get_curline());
+    len = (colnr_T)STRLEN(ml_get_buf(win->w_buffer, win->w_cursor.lnum, FALSE));
     if (len == 0)
-	curwin->w_cursor.col = 0;
-    else if (curwin->w_cursor.col >= len)
+	win->w_cursor.col = 0;
+    else if (win->w_cursor.col >= len)
     {
 	/* Allow cursor past end-of-line when:
 	 * - in Insert mode or restarting Insert mode
@@ -567,33 +577,33 @@ check_cursor_col()
 		|| (ve_flags & VE_ONEMORE)
 #endif
 		|| virtual_active())
-	    curwin->w_cursor.col = len;
+	    win->w_cursor.col = len;
 	else
 	{
-	    curwin->w_cursor.col = len - 1;
+	    win->w_cursor.col = len - 1;
 #ifdef FEAT_MBYTE
-	    /* prevent cursor from moving on the trail byte */
+	    /* Move the cursor to the head byte. */
 	    if (has_mbyte)
-		mb_adjust_cursor();
+		mb_adjustpos(win->w_buffer, &win->w_cursor);
 #endif
 	}
     }
-    else if (curwin->w_cursor.col < 0)
-	curwin->w_cursor.col = 0;
+    else if (win->w_cursor.col < 0)
+	win->w_cursor.col = 0;
 
 #ifdef FEAT_VIRTUALEDIT
     /* If virtual editing is on, we can leave the cursor on the old position,
      * only we must set it to virtual.  But don't do it when at the end of the
      * line. */
     if (oldcol == MAXCOL)
-	curwin->w_cursor.coladd = 0;
+	win->w_cursor.coladd = 0;
     else if (ve_flags == VE_ALL)
     {
-	if (oldcoladd > curwin->w_cursor.col)
-	    curwin->w_cursor.coladd = oldcoladd - curwin->w_cursor.col;
+	if (oldcoladd > win->w_cursor.col)
+	    win->w_cursor.coladd = oldcoladd - win->w_cursor.col;
 	else
 	    /* avoid weird number when there is a miscalculation or overflow */
-	    curwin->w_cursor.coladd = 0;
+	    win->w_cursor.coladd = 0;
     }
 #endif
 }

src/normal.c

@@ -8774,7 +8774,7 @@ unadjust_for_sel()
 	{
 	    --pp->col;
 #ifdef FEAT_MBYTE
-	    mb_adjustpos(pp);
+	    mb_adjustpos(curbuf, pp);
 #endif
 	}
 	else if (pp->lnum > 1)

src/proto/mbyte.pro

@@ -56,7 +56,7 @@ void utf_find_illegal __ARGS((void));
 int utf_valid_string __ARGS((char_u *s, char_u *end));
 int dbcs_screen_tail_off __ARGS((char_u *base, char_u *p));
 void mb_adjust_cursor __ARGS((void));
-void mb_adjustpos __ARGS((pos_T *lp));
+void mb_adjustpos __ARGS((buf_T *buf, pos_T *lp));
 char_u *mb_prevptr __ARGS((char_u *line, char_u *p));
 int mb_charlen __ARGS((char_u *str));
 int mb_charlen_len __ARGS((char_u *str, int len));

src/proto/misc2.pro

@@ -14,6 +14,7 @@ int decl __ARGS((pos_T *lp));
 linenr_T get_cursor_rel_lnum __ARGS((win_T *wp, linenr_T lnum));
 void check_cursor_lnum __ARGS((void));
 void check_cursor_col __ARGS((void));
+void check_cursor_col_win __ARGS((win_T *win));
 void check_cursor __ARGS((void));
 void adjust_cursor_col __ARGS((void));
 int leftcol_changed __ARGS((void));

src/version.c

@@ -709,6 +709,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    239,
 /**/
     238,
 /**/