From 807ba6f6850bf7dbf86fd65299248f2d9cba7f75 Mon Sep 17 00:00:00 2001
From: zsugabubus <zsugabubus@users.noreply.github.com>
Date: Sun, 12 Jan 2020 12:18:01 +0100
Subject: lexers: match whitespaces in text lexer

Otherwise, show-{tabs,newlines,spaces} replacement characters are
undistinguishable from normal text.
---
 lua/lexers/text.lua | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lua')

diff --git a/lua/lexers/text.lua b/lua/lexers/text.lua
index 4988d95..cc41bfa 100644
--- a/lua/lexers/text.lua
+++ b/lua/lexers/text.lua
@@ -1,6 +1,15 @@
 -- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE.
 -- Text LPeg lexer.
 
+local l = require('lexer')
+
 local M = {_NAME = 'text'}
 
+-- Whitespace.
+local ws = l.token(l.WHITESPACE, l.space^1)
+
+M._rules = {
+  {'whitespace', ws},
+}
+
 return M
-- 
cgit v1.2.3


From febe0528303f838fa9f346aa343fff0fe29f5ba3 Mon Sep 17 00:00:00 2001
From: zsugabubus <zsugabubus@users.noreply.github.com>
Date: Sun, 12 Jan 2020 12:27:39 +0100
Subject: filetype: try text lexer as a last resort

---
 lua/plugins/filetype.lua | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'lua')

diff --git a/lua/plugins/filetype.lua b/lua/plugins/filetype.lua
index 35912f6..c7fad69 100644
--- a/lua/plugins/filetype.lua
+++ b/lua/plugins/filetype.lua
@@ -385,6 +385,10 @@ vis.ftdetect.filetypes = {
 	texinfo = {
 		ext = { "%.texi$" },
 	},
+	text = {
+		ext = { "%.txt$" },
+		mime = { "text/plain" },
+	},
 	toml = {
 		ext = { "%.toml$" },
 	},
@@ -497,6 +501,12 @@ vis.events.subscribe(vis.events.WIN_OPEN, function(win)
 		end
 	end
 
+	-- try text lexer as a last resort
+	if (mime or 'text/plain'):match('^text/.+$') then
+		set_filetype('text', vis.ftdetect.filetypes.text)
+		return
+	end
+
 	win:set_syntax(nil)
 end)
 
-- 
cgit v1.2.3