--- texk/web2c/luatexdir/tex/printing.c (revision 49614) +++ texk/web2c/luatexdir/tex/printing.c (working copy) @@ -416,7 +416,7 @@ { char *buffer = NULL; int i = 0; - int newlinechar = new_line_char_par; + int newlinechar = (lua_only == 1) ? 10 : new_line_char_par; int dolog = 0; int doterm = 0; switch (selector) {