diff --git a/src/testdir/test64.in b/src/testdir/test64.in
index b0b1c91..b29fe76 100644
--- a/src/testdir/test64.in
+++ b/src/testdir/test64.in
@@ -289,15 +289,29 @@
 :call add(tl, [2, '.a\%$', " a\n "])
 :call add(tl, [2, '.a\%$', " a\n_a", "_a"])
 :"
-:"""" Test recognition of some character classes
-:call add(tl, [2, '[0-9]', '8', '8'])
-:call add(tl, [2, '[^0-9]', '8'])
-:call add(tl, [2, '[0-9a-fA-F]*', '0a7', '0a7'])
-:call add(tl, [2, '[^0-9A-Fa-f]\+', '0a7'])
-:call add(tl, [2, '[a-z_A-Z0-9]\+', 'aso_sfoij', 'aso_sfoij'])
-:call add(tl, [2, '[a-z]', 'a', 'a'])
-:call add(tl, [2, '[a-zA-Z]', 'a', 'a'])
-:call add(tl, [2, '[A-Z]', 'a'])
+:"""" Test recognition of character classes
+:call add(tl, [2, '[0-7]\+', 'x0123456789x', '01234567'])
+:call add(tl, [2, '[^0-7]\+', '0a;X+% 897', 'a;X+% 89'])
+:call add(tl, [2, '[0-9]\+', 'x0123456789x', '0123456789'])
+:call add(tl, [2, '[^0-9]\+', '0a;X+% 9', 'a;X+% '])
+:call add(tl, [2, '[0-9a-fA-F]\+', 'x0189abcdefg', '0189abcdef'])
+:call add(tl, [2, '[^0-9A-Fa-f]\+', '0189g;X+% ab', 'g;X+% '])
+:call add(tl, [2, '[a-z_A-Z0-9]\+', ';+aso_SfOij ', 'aso_SfOij'])
+:call add(tl, [2, '[^a-z_A-Z0-9]\+', 'aSo_;+% sfOij', ';+% '])
+:call add(tl, [2, '[a-z_A-Z]\+', '0abyz_ABYZ;', 'abyz_ABYZ'])
+:call add(tl, [2, '[^a-z_A-Z]\+', 'abAB_09;+% yzYZ', '09;+% '])
+:call add(tl, [2, '[a-z]\+', '0abcxyz1', 'abcxyz'])
+:call add(tl, [2, '[a-z]\+', 'AabxyzZ', 'abxyz'])
+:call add(tl, [2, '[^a-z]\+', 'a;X09+% x', ';X09+% '])
+:call add(tl, [2, '[^a-z]\+', 'abX0;%yz', 'X0;%'])
+:call add(tl, [2, '[a-zA-Z]\+', '0abABxzXZ9', 'abABxzXZ'])
+:call add(tl, [2, '[^a-zA-Z]\+', 'ab09_;+ XZ', '09_;+ '])
+:call add(tl, [2, '[A-Z]\+', 'aABXYZz', 'ABXYZ'])
+:call add(tl, [2, '[^A-Z]\+', 'ABx0;%YZ', 'x0;%'])
+:call add(tl, [2, '[a-z]\+\c', '0abxyzABXYZ;', 'abxyzABXYZ'])
+:call add(tl, [2, '[A-Z]\+\c', '0abABxzXZ9', 'abABxzXZ'])
+:call add(tl, [2, '\c[^a-z]\+', 'ab09_;+ XZ', '09_;+ '])
+:call add(tl, [2, '\c[^A-Z]\+', 'ab09_;+ XZ', '09_;+ '])
 :call add(tl, [2, '\C[^A-Z]\+', 'ABCOIJDEOIFNSD jsfoij sa', ' jsfoij sa'])
 :"
 :"""" Tests for \z features