From 4ca7a4c1ae35a4f55dd10e48802b5e9cdd93dedb Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Thu, 1 Oct 2020 12:02:58 +0200
Subject: Vim: set line border color correctly

---
 vim/.vimrc | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'vim')

diff --git a/vim/.vimrc b/vim/.vimrc
index 72f0dd6..b373cf8 100644
--- a/vim/.vimrc
+++ b/vim/.vimrc
@@ -87,6 +87,29 @@ highlight SpellLocal cterm=underline,bold ctermfg=black ctermbg=blue
 highlight SpellRare cterm=underline,bold ctermfg=black ctermbg=white
 highlight ColorColumn ctermfg=black ctermbg=yellow
 
+" The terminal background (set in .Xresources) is the background for that part
+" of the terminal where characters can be placed. The padding at the bottom
+" and right side are the line border (color 708 in .Xresources). This is not
+" colored by Vim by default. When the color scheme is changed, we check the
+" current background color and update the line border of the terminal.
+function! s:set_terminal_line_border()
+	let bg=synIDattr(synIDtrans(hlID('Normal')), 'bg', 'cterm')
+	if bg == '255'
+		silent execute ':!echo -e "\033]708;\#eeeeee\007"'
+	else
+		if bg != '234'
+			echohl WarningMsg
+			echo 'Vim background was set to '.bg.', which is unknown; resetting terminal lineBorder to default...'
+			echohl None
+			call getchar()
+		endif
+		silent execute ':!echo -e "\033]708;\#1c1c1c\007"'
+	endif
+endfunction
+autocmd ColorScheme * call s:set_terminal_line_border()
+" When we leave vim we restore the value set also in .Xresources
+autocmd VimLeave * silent execute ':!echo -e "\033]708;\#002b36\007"'
+
 let network = system("iwconfig wlp2s0 | grep ESSID | cut -d'\"' -f2")
 let network = substitute(network, '\n', '', '')
 if index(["WiFi in de trein", "Syntus-Utrecht"], network) >= 0
-- 
cgit v1.2.3