Fix cmp for latex

This stops cmp from using buffer complete in tex files.
I find it is more of a hinderance than a help

after/ftplugin/tex.lua

@@ -0,0 +1,22 @@
+-- stop suggesting buffer contents when writing prose
+local ok,cmp = pcall(require,"cmp")
+if not ok then
+	return
+end
+
+local sources = cmp.get_config().sources
+
+for i = #sources, 1, -1 do
+	if sources[i].name == 'buffer' then
+		table.remove(sources,i)
+	end
+end
+cmp.setup.buffer({ sources = sources})
+
+-- set syntax and spell
+
+vim.opt.spell = true
+vim.opt.foldmarker = '(fold),(end)'
+vim.opt.foldclose = 'all'
+vim.opt.foldmethod = 'marker'
+vim.opt.foldenable = true