From a0d68f92657ef15875ea2d2f6dd9056b2a0dcf5c Mon Sep 17 00:00:00 2001
From: Julian Prein <druckdev@protonmail.com>
Date: Mon, 21 Nov 2022 16:31:58 +0100
Subject: [PATCH] vim:autocmd: Highlight old cursor position

Highlight old cursor position as if the cursor was still there when
switching window focus.

This way I keep an overview of the cursor positions.
---
 .config/vim/vimrc.d/80-autocommands.vim | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/.config/vim/vimrc.d/80-autocommands.vim b/.config/vim/vimrc.d/80-autocommands.vim
index be89cc5..676a0fd 100644
--- a/.config/vim/vimrc.d/80-autocommands.vim
+++ b/.config/vim/vimrc.d/80-autocommands.vim
@@ -70,6 +70,25 @@ augroup highlight_current_word
 	au CursorMovedI * call HighlightCurrentWord()
 augroup END
 
+" When switching focus to another window, keep the cursor location highlighted.
+function! HighlightOldCursorPos()
+	let w:cursor_pos_match_id = matchaddpos(
+		\ 'TermCursor',
+		\ [getcurpos()[1:2]])
+endfunction
+function! ClearOldCursorPos()
+	if exists('w:cursor_pos_match_id')
+		echo 'foo'
+		call matchdelete(w:cursor_pos_match_id)
+		unlet w:cursor_pos_match_id
+	endif
+endfunction
+augroup highlight_old_cursor_pos
+	au!
+	au WinLeave * call HighlightOldCursorPos()
+	au WinEnter * call ClearOldCursorPos()
+augroup END
+
 " Do not mark input from stdin as modified
 augroup stdin_not_modified
 	au!