From 36343ae0fb7247e060abfd35fb8e4337b33abb4b Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sat, 15 Oct 2022 19:04:05 +0100
Subject: [PATCH] patch 9.0.0765: with a Visual block a put command column may
 go negative

Problem:    With a Visual block a put command column may go negative.
Solution:   Check that the column does not become negative.
---
 src/register.c              |  2 ++
 src/testdir/test_visual.vim | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/src/register.c b/src/register.c
index 30e2001..41089a0 100644
--- a/src/register.c
+++ b/src/register.c
@@ -1945,6 +1945,8 @@ do_put(
 	// adjust '] mark
 	curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1;
 	curbuf->b_op_end.col = bd.textcol + totlen - 1;
+	if (curbuf->b_op_end.col < 0)
+	    curbuf->b_op_end.col = 0;
 	curbuf->b_op_end.coladd = 0;
 	if (flags & PUT_CURSEND)
 	{
diff --git a/src/testdir/test_visual.vim b/src/testdir/test_visual.vim
index e965266..956a3d7 100644
--- a/src/testdir/test_visual.vim
+++ b/src/testdir/test_visual.vim
@@ -483,6 +483,18 @@ func Test_visual_block_put()
   bw!
 endfunc
 
+func Test_visual_block_put_invalid()
+  enew!
+  behave mswin
+  norm yy
+  norm v)Ps/^/	
+  " this was causing the column to become negative
+  silent norm ggv)P
+
+  bwipe!
+  behave xterm
+endfunc
+
 " Visual modes (v V CTRL-V) followed by an operator; count; repeating
 func Test_visual_mode_op()
   new
-- 
2.27.0