[vim/vim] Unexpected cursor position after using gp (#8899)

[naohiro ono]

Describe the bug

Using gp to put the text of a register might move the cursor to an unexpected position when these conditions are met:

• The text contains line break(s).
• The register type is characterwise.
• A count (> 1) is given to gp.

To Reproduce

1. Run vim -Nu NONE.

2. :source this script:

   call setreg('@', "foo\nbar", 'c')
   new
   let lines =<< trim END
     <---->
   END
   call setline(1, lines)
   normal! 1G2f-
   normal! 3gp

   The new window consists of these lines:

   <--foo
   barfoo
   barfoo
   bar-->
   

   This is expected.

   But the cursor is on the f of line 2, which is not expected.

Expected behavior

The cursor is on the first - of line 4. Because the help says gp leaves the cursor just after the new text:

							*gp*
["x]gp			Just like "p", but leave the cursor just after the new
			text.

Environment

• Vim 8.2.3448
• macOS 10.15.7
• iTerm2

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[naohiro ono]

It seems the position of '] mark is also wrong; it is placed on the r of line 2 (i.e. just before the cursor) in the example above. I would think it should be on the r of line 4.

[Bram Moolenaar]

Closed #8899 via 23003e5.

[naohiro ono]

Thank you!