From 1cdfa026cf1f6bbb877f9cd80a0bf563aaf1a21d Mon Sep 17 00:00:00 2001
From: Marc Coquand <marc@baemingo.com>
Date: Mon, 22 May 2023 18:07:18 -0500
Subject: Add check for filetype

---
 lua/buffer_browser.lua | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/lua/buffer_browser.lua b/lua/buffer_browser.lua
index 701e500..c9ab6d7 100644
--- a/lua/buffer_browser.lua
+++ b/lua/buffer_browser.lua
@@ -22,7 +22,7 @@ local function matchesFilter(filters, name)
 end
 
 
-local function StateAppend(bufNr, stateFiletype, state, filters)
+local function stateAppend(bufNr, stateFiletype, state, filters)
 	if (state.current == bufNr) then
 		return state
 	end
@@ -40,7 +40,7 @@ local function StateAppend(bufNr, stateFiletype, state, filters)
 	end
 end
 
-local function StateGoBack(state)
+local function stateGoBack(state)
 	-- Go back in the state by setting current to the first element of previous, and appending the current to the future
 	-- Check if past is empty, if so return state as is
 	if #state.previous == 0 then
@@ -52,7 +52,7 @@ local function StateGoBack(state)
 	return state
 end
 
-local function StateGoForward(state)
+local function stateGoForward(state)
 	-- Go forward in the state by setting current to the first element of future, and appending the current to the previous
 
 	-- Check if future is empty, if so return state as is
@@ -136,8 +136,8 @@ local function getBufNr()
 end
 
 local function getFiletype(bufnr)
-	if (bufnr == nil) then
-		return ''
+	if (bufnr == nil and vim.bo[bufnr] == nil) then
+		return nil
 	end
 	return vim.bo[bufnr].filetype
 end
@@ -153,7 +153,7 @@ function BufferBrowserBufferEnter(args)
 	else
 		if (state.current ~= bufNr) then
 			local stateFiletype = getFiletype(state.current)
-			StateAppend(bufNr, stateFiletype, state, filters)
+			stateAppend(bufNr, stateFiletype, state, filters)
 			setState(state)
 		end
 	end
@@ -200,7 +200,7 @@ local function next()
 	if stateIsEmpty(state) then
 		initState(bufnr)
 	else
-		StateGoForward(state)
+		stateGoForward(state)
 		setState(state)
 	end
 	api.nvim_command('buffer ' .. state.current)
@@ -213,7 +213,7 @@ local function prev()
 	if stateIsEmpty(state) then
 		initState(bufnr)
 	else
-		StateGoBack(state)
+		stateGoBack(state)
 		setState(state)
 	end
 	api.nvim_command('buffer ' .. state.current)
-- 
cgit v1.2.3