patch 8.1.0212: preferred cursor column not set in interfaces

Problem:    Preferred cursor column not set in interfaces.
Solution:   Set w_set_curswant when setting the cursor. (David Hotham,
            closes #3060)

Author: brammool

src/if_lua.c

@@ -1377,6 +1377,7 @@ luaV_window_newindex (lua_State *L)
 	luaV_checksandbox(L);
 #endif
 	w->w_cursor.col = v - 1;
+	w->w_set_curswant = TRUE;
 	update_screen(VALID);
     }
     else if (strncmp(s, "width", 5) == 0)

src/if_mzsch.c

@@ -2132,6 +2132,7 @@ set_cursor(void *data, int argc, Scheme_Object **argv)
 
     win->win->w_cursor.lnum = lnum;
     win->win->w_cursor.col = col;
+    win->win->w_set_curswant = TRUE;
     update_screen(VALID);
 
     raise_if_error();

src/if_perl.xs

@@ -1691,6 +1691,7 @@ Cursor(win, ...)
       col = (int) SvIV(ST(2));
       win->w_cursor.lnum = lnum;
       win->w_cursor.col = col;
+      win->w_set_curswant = TRUE;
       check_cursor();		    /* put cursor on an existing line */
       update_screen(NOT_VALID);
     }

src/if_py_both.h

@@ -3985,6 +3985,7 @@ WindowSetattr(WindowObject *self, char *name, PyObject *valObject)
 
 	self->win->w_cursor.lnum = lnum;
 	self->win->w_cursor.col = col;
+	self->win->w_set_curswant = TRUE;
 #ifdef FEAT_VIRTUALEDIT
 	self->win->w_cursor.coladd = 0;
 #endif

src/if_ruby.c

@@ -1517,6 +1517,7 @@ static VALUE window_set_cursor(VALUE self, VALUE pos)
     col = RARRAY_PTR(pos)[1];
     win->w_cursor.lnum = NUM2LONG(lnum);
     win->w_cursor.col = NUM2UINT(col);
+    win->w_set_curswant = TRUE;
     check_cursor();		    /* put cursor on an existing line */
     update_screen(NOT_VALID);
     return Qnil;

src/if_tcl.c

@@ -1091,6 +1091,7 @@ winselfcmd(
 	    /* TODO: should check column */
 	    win->w_cursor.lnum = val1;
 	    win->w_cursor.col = col2vim(val2);
+	    win->w_set_curswant = TRUE;
 	    flags |= FL_UPDATE_SCREEN;
 	    break;
 

src/testdir/test_lua.vim

@@ -555,3 +555,20 @@ func Test_luafile_error()
   call delete('Xlua_file')
   bwipe!
 endfunc
+
+func Test_set_cursor()
+  " Check that setting the cursor position works.
+  new
+  call setline(1, ['first line', 'second line'])
+  normal gg
+  lua << EOF
+w = vim.window()
+w.line = 1
+w.col = 5
+EOF
+  call assert_equal([1, 5], [line('.'), col('.')])
+
+  " Check that movement after setting cursor position keeps current column.
+  normal j
+  call assert_equal([2, 5], [line('.'), col('.')])
+endfunc

src/testdir/test_perl.vim

@@ -258,3 +258,16 @@ func Test_000_SvREFCNT()
 --perl
   %bw!
 endfunc
+
+func Test_set_cursor()
+  " Check that setting the cursor position works.
+  new
+  call setline(1, ['first line', 'second line'])
+  normal gg
+  perldo $curwin->Cursor(1, 5)
+  call assert_equal([1, 6], [line('.'), col('.')])
+
+  " Check that movement after setting cursor position keeps current column.
+  normal j
+  call assert_equal([2, 6], [line('.'), col('.')])
+endfunc

src/testdir/test_python2.vim

@@ -22,3 +22,17 @@ func Test_pydo()
   bwipe!
   bwipe!
 endfunc
+
+func Test_set_cursor()
+  " Check that setting the cursor position works.
+  py import vim
+  new
+  call setline(1, ['first line', 'second line'])
+  normal gg
+  pydo vim.current.window.cursor = (1, 5)
+  call assert_equal([1, 6], [line('.'), col('.')])
+
+  " Check that movement after setting cursor position keeps current column.
+  normal j
+  call assert_equal([2, 6], [line('.'), col('.')])
+endfunc

src/testdir/test_python3.vim

@@ -1,4 +1,4 @@
-" Test for python 2 commands.
+" Test for python 3 commands.
 " TODO: move tests from test88.in here.
 
 if !has('python3')
@@ -22,3 +22,17 @@ func Test_py3do()
   bwipe!
   bwipe!
 endfunc
+
+func Test_set_cursor()
+  " Check that setting the cursor position works.
+  py3 import vim
+  new
+  call setline(1, ['first line', 'second line'])
+  normal gg
+  py3do vim.current.window.cursor = (1, 5)
+  call assert_equal([1, 6], [line('.'), col('.')])
+
+  " Check that movement after setting cursor position keeps current column.
+  normal j
+  call assert_equal([2, 6], [line('.'), col('.')])
+endfunc