patch 9.0.0697: cursor in wrong position with Visual substitute

Problem:    Cursor in wrong position with Visual substitute.
Solution:   When restoring 'linebreak' mark the virtual column as invalid.
            (closes #11309, closes #11311)

src/ops.c

@@ -2207,6 +2207,35 @@ theend:
     return ret;
 }
 
+/*
+ * Reset 'linebreak' and take care of side effects.
+ * Returns the previous value, to be passed to restore_lbr().
+ */
+    static int
+reset_lbr(void)
+{
+    if (!curwin->w_p_lbr)
+	return FALSE;
+    // changing 'linebreak' may require w_virtcol to be updated
+    curwin->w_p_lbr = FALSE;
+    curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL);
+    return TRUE;
+}
+
+/*
+ * Restore 'linebreak' and take care of side effects.
+ */
+    static void
+restore_lbr(int lbr_saved)
+{
+    if (!curwin->w_p_lbr && lbr_saved)
+    {
+	// changing 'linebreak' may require w_virtcol to be updated
+	curwin->w_p_lbr = TRUE;
+	curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL);
+    }
+}
+
 /*
  * prepare a few things for block mode yank/delete/tilde
  *
@@ -2235,11 +2264,10 @@ block_prep(
     char_u	*prev_pend;
     chartabsize_T cts;
 #ifdef FEAT_LINEBREAK
-    int		lbr_saved = curwin->w_p_lbr;
-
-    // Avoid a problem with unwanted linebreaks in block mode.
-    curwin->w_p_lbr = FALSE;
+		// Avoid a problem with unwanted linebreaks in block mode.
+    int		lbr_saved = reset_lbr();
 #endif
+
     bdp->startspaces = 0;
     bdp->endspaces = 0;
     bdp->textlen = 0;
@@ -2369,7 +2397,7 @@ block_prep(
     bdp->textcol = (colnr_T) (pstart - line);
     bdp->textstart = pstart;
 #ifdef FEAT_LINEBREAK
-    curwin->w_p_lbr = lbr_saved;
+    restore_lbr(lbr_saved);
 #endif
 }
 
@@ -3570,9 +3598,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 
 #ifdef FEAT_LINEBREAK
 	// Avoid a problem with unwanted linebreaks in block mode.
-	if (curwin->w_p_lbr)
-	    curwin->w_valid &= ~VALID_VIRTCOL;
-	curwin->w_p_lbr = FALSE;
+	(void)reset_lbr();
 #endif
 	oap->is_VIsual = VIsual_active;
 	if (oap->motion_force == 'V')
@@ -3908,7 +3934,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 		{
 #ifdef FEAT_LINEBREAK
 		    // make sure redrawing is correct
-		    curwin->w_p_lbr = lbr_saved;
+		    restore_lbr(lbr_saved);
 #endif
 		    redraw_curbuf_later(UPD_INVERTED);
 		}
@@ -3948,7 +3974,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 		    ))
 	{
 #ifdef FEAT_LINEBREAK
-	    curwin->w_p_lbr = lbr_saved;
+	    restore_lbr(lbr_saved);
 #endif
 	    redraw_curbuf_later(UPD_INVERTED);
 	}
@@ -4036,7 +4062,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 	    else
 	    {
 #ifdef FEAT_LINEBREAK
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		oap->excl_tr_ws = cap->cmdchar == 'z';
 		(void)op_yank(oap, FALSE, !gui_yank);
@@ -4065,7 +4091,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 #ifdef FEAT_LINEBREAK
 		// Restore linebreak, so that when the user edits it looks as
 		// before.
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		// Reset finish_op now, don't want it set inside edit().
 		finish_op = FALSE;
@@ -4143,7 +4169,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 #ifdef FEAT_LINEBREAK
 		// Restore linebreak, so that when the user edits it looks as
 		// before.
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		// call 'operatorfunc'
 		op_function(oap);
@@ -4172,12 +4198,12 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 #ifdef FEAT_LINEBREAK
 		// Restore linebreak, so that when the user edits it looks as
 		// before.
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		op_insert(oap, cap->count1);
 #ifdef FEAT_LINEBREAK
 		// Reset linebreak, so that formatting works correctly.
-		curwin->w_p_lbr = FALSE;
+		(void)reset_lbr();
 #endif
 
 		// TODO: when inserting in several lines, should format all
@@ -4203,7 +4229,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 #ifdef FEAT_LINEBREAK
 		// Restore linebreak, so that when the user edits it looks as
 		// before.
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		op_replace(oap, cap->nchar);
 	    }
@@ -4246,7 +4272,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 	    {
 		VIsual_active = TRUE;
 #ifdef FEAT_LINEBREAK
-		curwin->w_p_lbr = lbr_saved;
+		restore_lbr(lbr_saved);
 #endif
 		op_addsub(oap, cap->count1, redo_VIsual.rv_arg);
 		VIsual_active = FALSE;
@@ -4265,7 +4291,7 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 						|| oap->op_type == OP_DELETE))
 	    {
 #ifdef FEAT_LINEBREAK
-		curwin->w_p_lbr = FALSE;
+		(void)reset_lbr();
 #endif
 		coladvance(curwin->w_curswant = old_col);
 	    }
@@ -4279,6 +4305,6 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 	motion_force = NUL;
     }
 #ifdef FEAT_LINEBREAK
-    curwin->w_p_lbr = lbr_saved;
+    restore_lbr(lbr_saved);
 #endif
 }

src/testdir/dumps/Test_linebreak_reset_restore_1.dump

@@ -0,0 +1,8 @@
+|a+0&#ffffff0@64| @9
+|b@9| > @63
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|1|,|7|8|-|8|7| @6|A|l@1| 

src/testdir/test_listlbr.vim

@@ -8,6 +8,7 @@ CheckOption linebreak
 CheckFeature conceal
 
 source view_util.vim
+source screendump.vim
 
 function s:screen_lines(lnum, width) abort
   return ScreenLines(a:lnum, a:width)
@@ -133,6 +134,26 @@ func Test_linebreak_with_visual_operations()
   call s:close_windows()
 endfunc
 
+func Test_linebreak_reset_restore()
+  CheckScreendump
+
+  let lines =<< trim END
+      vim9script
+      &linebreak = true
+      &showcmd = true
+      &showmode = false
+      ('a'->repeat(&columns - 10) .. ' ' .. 'b'->repeat(10) .. ' c')->setline(1)
+  END
+  call writefile(lines, 'XlbrResetRestore', 'D')
+  let buf = RunVimInTerminal('-S XlbrResetRestore', {'rows': 8})
+
+  call term_sendkeys(buf, '$v$s')
+  call VerifyScreenDump(buf, 'Test_linebreak_reset_restore_1', {})
+
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+endfunc
+
 func Test_virtual_block()
   call s:test_windows('setl sbr=+')
   call setline(1, [

src/testdir/test_visual.vim

@@ -1501,5 +1501,37 @@ func Test_switch_buffer_ends_visual_mode()
   exe 'bwipe!' buf2
 endfunc
 
+" Test that cursor is drawn at correct position after an operator in Visual
+" mode when 'linebreak' and 'showcmd' are enabled.
+func Test_visual_operator_with_linebreak()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+    set linebreak showcmd noshowmode
+    call setline(1, repeat('a', &columns - 10) .. ' bbbbbbbbbb c')
+  END
+  call writefile(lines, 'XTest_visual_op_linebreak', 'D')
+
+  let buf = RunVimInTerminal('-S XTest_visual_op_linebreak', {'rows': 6})
+
+  call term_sendkeys(buf, '$v$')
+  call WaitForAssert({-> assert_equal(13, term_getcursor(buf)[1])})
+  call term_sendkeys(buf, 'zo')
+  call WaitForAssert({-> assert_equal(12, term_getcursor(buf)[1])})
+
+  call term_sendkeys(buf, "$\<C-V>$")
+  call WaitForAssert({-> assert_equal(13, term_getcursor(buf)[1])})
+  call term_sendkeys(buf, 'I')
+  call WaitForAssert({-> assert_equal(12, term_getcursor(buf)[1])})
+
+  call term_sendkeys(buf, "\<Esc>$v$")
+  call WaitForAssert({-> assert_equal(13, term_getcursor(buf)[1])})
+  call term_sendkeys(buf, 's')
+  call WaitForAssert({-> assert_equal(12, term_getcursor(buf)[1])})
+
+  " clean up
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    697,
 /**/
     696,
 /**/