From 114a840a419e41963d80382df222ce5308a5a0f3 Mon Sep 17 00:00:00 2001
From: shadmansaleh <13149513+shadmansaleh@users.noreply.github.com>
Date: Mon, 30 Aug 2021 09:45:42 +0600
Subject: [PATCH] enhace: Allow transitional hl to be applied at begining and
 end of stl

Since for left sep at left most location we will not find and prev_hl
We will use 'Normal' for right sep of right most position we will not
find a next_hl we will use 'Normal'.
---
 lua/lualine/init.lua | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lua/lualine/init.lua b/lua/lualine/init.lua
index 14f6157..400c803 100644
--- a/lua/lualine/init.lua
+++ b/lua/lualine/init.lua
@@ -29,9 +29,10 @@ end
 -- Helper for apply_transitional_separators()
 local function fill_section_separator(status, str_checked, last_hl, sep, reverse)
   -- Inserts transitional separator along with transitional highlight
-  if last_hl and #last_hl == 0 then return  end
   local next_hl = find_next_hl(status, str_checked)
-  if next_hl == nil then return end
+  if last_hl == nil then last_hl = 'Normal' end
+  if next_hl == nil then next_hl = 'Normal' end
+  if #next_hl == 0 or #last_hl == 0 then return end
   local transitional_highlight = reverse -- lua ternary assignment x ? y : z
             and modules.highlight.get_transitional_highlights(last_hl, next_hl)
             or modules.highlight.get_transitional_highlights(next_hl, last_hl)