ブラケット表現（Bracket Expression）
| [:space:] スペースやタブ、改行 | ||||
|---|---|---|---|---|
| HT (Horizontal Tab) | LF (Line Feed) | VT (Vertical Tab) | FF (Form Feed) | CR (Carriage Return) |
| SP (SPace) | ||||
| [:punct:] 記号 (graph - alnum) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / |
| : | ; | < | = | > | ? | |||||||||
| @ | ||||||||||||||
| [ | \ | ] | ^ | _ | ||||||||||
| ` | ||||||||||||||
| { | | | } | ~ | |||||||||||
| [:alnum:] 英数字 (graph - punct) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |||||
| 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 | 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 | ||||
| [:alpha:] 英字 (alnum - digit) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 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 | ||||
| [:cntrl:] 制御文字 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NUL (NULl) | SOH (Start Of Heading) | STX (Start of TeXt) | ETX (End of TeXt) | EOT (End Of Transmission) | ENQ (ENQuiry) | ACK (ACKnowledge) | BEL (BELl) | BS (Back Space) | HT | LF | VT | FF | CR | SO (Shift Out) | SI (Shift In) |
| DLE (Data Link Escape) | DC1 (Device Control 1) | DC2 (Device Control 2) | DC3 (Device Control 3) | DC4 (Device Control 4) | NAK (Negative AcKnowledge) | SYN (SYNchronous idle) | ETB (End of Transmission Block) | CAN (CANcel) | EM (End of Medium) | SUB (SUBstitute) | ESC (ESCape) | FS (File Separator) | GS (Group Separator) | RS (Record Separator) | US (Unit Separator) |
| DEL (DELete) | |||||||||||||||
| [:digit:] 数字 (alnum - alpha) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| [:graph:] 文字記号 (alnum + punct, print - SP) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / | |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| @ | 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 | 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 | { | | | } | ~ | |
| [:lower:] 英小文字 (alpha - upper) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||
| [:print:] 表示可能文字 (graph + SP) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SP | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| @ | 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 | 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 | { | | | } | ~ | |
| [:upper:] 英大文字 (alpha - lower) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||
| [:xdigit:] 16進数 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| A | B | C | D | E | F | ||||
| a | b | c | d | e | f | ||||