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1.1 root 1: .TH ASCII 1
2: .SH NAME
3: ascii, unicode \- interpret ASCII, Unicode characters
4: .SH SYNOPSIS
5: .B ascii
6: [
7: .B -8
8: ]
9: [
10: .BI -oxdb n
11: ]
12: [
13: .B -nct
14: ]
15: [
16: .I text
17: ]
18: .PP
19: .B unicode
20: [
21: .B -nt
22: ]
23: .IB hexmin - hexmax
24: .PP
25: .B unicode
26: [
27: .B -t
28: ]
29: .I hex
30: [
31: \&...
32: ]
33: .PP
34: .B unicode
35: [
36: .B -n
37: ]
38: .I characters
39: .PP
40: .B look
41: .I hex
42: .B /lib/unicode
43: .SH DESCRIPTION
44: .I Ascii
45: prints the
46: .SM ASCII
47: values corresponding to characters and
48: .I vice
49: .IR versa ;
50: under the
51: .B -8
52: option, the
53: .SM ISO
54: Latin-1 extensions (codes 0200-0377) are included.
55: The values are interpreted in a settable numeric base;
56: .B -o
57: specifies octal,
58: .B -d
59: decimal,
60: .B -x
61: hexadecimal (the default), and
62: .BI -b n
63: base
64: .IR n .
65: .PP
66: With no arguments,
67: .I ascii
68: prints a table of the character set in the specified base.
69: Characters of
70: .I text
71: are converted to their
72: .SM ASCII
73: values, one per line. If, however, the first
74: .I text
75: argument is a valid number in the specified base, conversion
76: goes the opposite way.
77: Control characters are printed as two- or three-character mnemonics.
78: Other options are:
79: .TP
80: .B -n
81: Force numeric output.
82: .TP
83: .B -c
84: Force character output.
85: .TP
86: .B -t
87: Convert from numbers to running text; do not interpret
88: control characters or insert newlines.
89: .PP
90: .I Unicode
91: is similar; it converts between
92: .SM UTF
93: and character values from the Unicode Standard (see
94: .IR utf (6)).
95: If given a range of hexadecimal numbers,
96: .I unicode
97: prints a table of the specified Unicode characters \(em their values and
98: .SM UTF
99: representations.
100: Otherwise it translates from
101: .SM UTF
102: to numeric value or vice versa,
103: depending on the appearance of the supplied text;
104: the
105: .B -n
106: option forces numeric output to avoid ambiguity with numeric characters.
107: If converting to
108: .SM UTF ,
109: the characters are printed one per line unless the
110: .B -t
111: flag is set, in which case the output is a single string
112: containing only the specified characters.
113: Unlike
114: .IR ascii ,
115: .I unicode
116: treats no characters specially.
117: .PP
118: The output of
119: .I ascii
120: and
121: .I unicode
122: may be unhelpful if the characters printed are not available in the current font.
123: .PP
124: The file
125: .B /lib/unicode
126: contains a
127: table of characters and descriptions, sorted in hexadecimal order,
128: suitable for
129: .IR look (1)
130: on the lower case
131: .I hex
132: values of characters.
133: .SH EXAMPLES
134: .TP
135: .B "ascii -d"
136: Print the
137: .SM ASCII
138: table base 10.
139: .TP
140: .B "unicode p"
141: Print the hex value of `p'.
142: .TP
143: .B "unicode 2200-22f1"
144: Print a table of miscellaneous mathematical symbols.
145: .TP
146: .B "look 039 /lib/unicode"
147: See the start of the Greek alphabet's encoding in the Unicode Standard.
148: .SH FILES
149: .TF /lib/unicode
150: .TP
151: .B /lib/unicode
152: table of characters and descriptions.
153: .SH SOURCE
154: .B /sys/src/cmd/ascii.c
155: .br
156: .B /sys/src/cmd/unicode.c
157: .SH "SEE ALSO"
158: .IR look (1)
159: .IR tcs (1),
160: .IR utf (6),
161: .IR font (6),
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