General changes + vim changes

.config/nvim/lua/BluePlum/utility.lua

@@ -0,0 +1,53 @@
+function Ask(msg)
+	vim.cmd.echohl('Question')
+	vim.cmd.echo('"' .. msg .. '"')
+	vim.cmd.echohl()
+end
+
+function Confirm(msg)
+	Ask(msg .. ' [Y/n] ')
+
+	local answer = vim.fn.getchar()
+	return answer ~= 110 and answer ~= 27 and answer ~= 37 -- 'n', <ESC>, <SPACE>
+end
+
+function Input(prompt, last)
+	local buffer = ''
+	while true do
+		vim.cmd('redraw | echo')
+		vim.api.nvim_echo({
+			{ prompt, 'Question' },
+			last and { last, 'Visual' } or { buffer, 'Normal' },
+		}, false, {})
+
+		local character = vim.fn.getchar()
+		if pcall(function(char)
+			if vim.fn.keytrans(char) ~= '<BS>' then
+				error()
+			end
+		end, character) then
+			last = nil
+			buffer = vim.fn.slice(buffer, 0, -1)
+		elseif character == 27 then
+			vim.cmd('redraw | echo')
+			return nil
+		elseif character == 13 then
+			return last or buffer
+		elseif
+			(character == 32 or pcall(function(char)
+				if vim.fn.keytrans(char) ~= '<Right>' then
+					error()
+				end
+			end, character)) and last
+		then
+			buffer = last
+			if character == 32 then
+				buffer = buffer .. ' '
+			end
+			last = nil
+		else
+			last = nil
+			buffer = buffer .. vim.fn.nr2char(character)
+		end
+	end
+end