stay with literate, for now:

using straight UTF-8 chars would now show up in the .lst file,
but the formatting breaks (the entire line is slightly indented
yet, strangely, seems to take up less space; I think they are
not counted, width-wise)

teckids2style.sty

@@ -284,6 +284,23 @@
 	upquote=true,
 	keepspaces,
 	literate=
+		{á}{{\'a}}1 {é}{{\'e}}1 {í}{{\'i}}1 {ó}{{\'o}}1 {ú}{{\'u}}1
+		{Á}{{\'A}}1 {É}{{\'E}}1 {Í}{{\'I}}1 {Ó}{{\'O}}1 {Ú}{{\'U}}1
+		{à}{{\`a}}1 {è}{{\`e}}1 {ì}{{\`i}}1 {ò}{{\`o}}1 {ù}{{\`u}}1
+		{À}{{\`A}}1 {È}{{\'E}}1 {Ì}{{\`I}}1 {Ò}{{\`O}}1 {Ù}{{\`U}}1
+		{ä}{{\"a}}1 {ë}{{\"e}}1 {ï}{{\"i}}1 {ö}{{\"o}}1 {ü}{{\"u}}1
+		{Ä}{{\"A}}1 {Ë}{{\"E}}1 {Ï}{{\"I}}1 {Ö}{{\"O}}1 {Ü}{{\"U}}1
+		{â}{{\^a}}1 {ê}{{\^e}}1 {î}{{\^i}}1 {ô}{{\^o}}1 {û}{{\^u}}1
+		{Â}{{\^A}}1 {Ê}{{\^E}}1 {Î}{{\^I}}1 {Ô}{{\^O}}1 {Û}{{\^U}}1
+		{æ}{{\ae}}1 {Æ}{{\AE}}1 {ß}{{\ss}}1 {œ}{{\oe}}1 {Œ}{{\OE}}1
+		{ő}{{\H{o}}}1 {Ő}{{\H{O}}}1 {ű}{{\H{u}}}1 {Ű}{{\H{U}}}1
+		{å}{{\r a}}1 {Å}{{\r A}}1 {ç}{{\c c}}1 {Ç}{{\c C}}1 {ø}{{\o}}1
+		{©}{{\textcopyright}}1 {™}{\texttrademark}1 {§}{\S}1
+		{£}{{\pounds}}1 {°}{\textdegree{}}1 {„}{{\quotedblbase}}1
+		{“}{{\textquotedblleft}}1 {”}{{\textquotedblright}}1
+		{‘}{{\textquoteleft}}1 {’}{{\textquoteright}}1
+		{«}{\guillemotleft}1 {»}{\guillemotright}1
+		{€}{{\fontencoding{LY1}\selectfont\symbol{'001}}}1
 		{‐}{-}1 {‑}{-}1 {‒}{-}1 {–}{-}1 {—}{-}1 {―}{-}1
 		{…}{{\fontencoding{LY1}\selectfont\symbol{'205}}}1,
 	columns=flexible,