ffc ffb ffa
fdg feg ffg
lxyz nxyz mxyz
{abc,def}
{abc}
{a,b,c,d,e}
x} y} {a} b} c}
x,y {abc} trie
/usr/ucb/ex /usr/ucb/edit /usr/lib/ex /usr/lib/how_ex
XXXX{a,b,c}
XXXXa XXXXb XXXXc
{}
{ }
}
{
abcd{efgh
foo 1 2 bar
foo 1 2 bar
foo 1 2 bar
foobar foobaz.
foobar foobaz
bazx bazy
vx vy
bazx bazy
1 2 3 4 5 6 7 8 9 10
0..10 braces
0 1 2 3 4 5 6 7 8 9 10 braces
x0y x1y x2y x3y x4y x5y x6y x7y x8y x9y x10y xbracesy
3
x3y
10 9 8 7 6 5 4 3 2 1
10y 9y 8y 7y 6y 5y 4y 3y 2y 1y
x10y x9y x8y x7y x6y x5y x4y x3y x2y x1y
a b c d e f
f e d c b a
a ` _ ^ ]  [ Z Y X W V U T S R Q P O N M L K J I H G F E D C B A
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [  ] ^ _ ` a
f
{1..f}
{f..1}
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
-1 -2 -3 -4 -5 -6 -7 -8 -9 -10
-20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0
a-{bd}-c a-{be}-c
a-{bdef-g-c a-{bdef-i-c
{klklkl}1 {klklkl}2 {klklkl}3
{x,x}
1 3 5 7 9
-1 -3 -5 -7 -9
-1 -3 -5 -7 -9
10 8 6 4 2
10 8 6 4 2
1 3 5 7 9 11 13 15 17 19
1
0100 0095 0090 0085 0080 0075 0070 0065 0060 0055 0050 0045 0040 0035 0030 0025 0020 0015 0010 0005 0000
00100 00095 00090 00085 00080 00075 00070 00065 00060 00055 00050 00045 00040 00035 00030 00025 00020 00015 00010 00005 00000
a b c d e f g h i j k l m n o p q r s t u v w x y z
a c e g i k m o q s u w y
z x v t r p n l j h f d b
{1..10.f}
{1..ff}
{1..10..ff}
{1.20..2}
{1..20..f2}
{1..20..2f}
{1..2f..2}
{1..ff..2}
{1..ff}
{1..f}
{1..0f}
{1..10f}
{1..10.f}
{1..10.f}