patch 7.4.1491

Problem:    Visual-block shift breaks multi-byte characters.
Solution:   Compute column differently. (Yasuhiro Matsumoto) Add a test.

src/ops.c

@@ -410,7 +410,15 @@ shift_block(oparg_T *oap, int amount)
 	{
 #ifdef FEAT_MBYTE
 	    if (has_mbyte)
-		bd.textstart += (*mb_ptr2len)(bd.textstart);
+	    {
+		if ((*mb_ptr2len)(bd.textstart) == 1)
+		    ++bd.textstart;
+		else
+		{
+		    ws_vcol = 0;
+		    bd.startspaces = 0;
+		}
+	    }
 	    else
 #endif
 		++bd.textstart;

src/testdir/Make_all.mak

@@ -184,6 +184,7 @@ NEW_TESTS = test_arglist.res \
 	    test_syntax.res \
 	    test_viminfo.res \
 	    test_viml.res \
+	    test_visual.res \
 	    test_alot.res
 
 

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1491,
 /**/
     1490,
 /**/