1ESC-B(1)                    General Commands Manual                   ESC-B(1)
2
3NNAAMMEE
4     eesscc--BB - the roff escape B sequence: validate numerical expression
5
6DDEESSCCRRIIPPTTIIOONN
7     empty: 0
8     digit: 1
9     no number: 0
10     trailing garbage: 0
11     trailing operator: 0
12     infix operator: 1
13     infix and trailing operator: 0
14     chain of operations: 1
15     trailing para: 0
16     unclosed para: 0
17     empty pair of parentheses: 0
18     parentheses containing number: 1
19     complex expression: 1
20     other delimiter: 1
21
22   AArrgguummeenntt ddeelliimmiitteerrss
23     unsupported \!: 1u
24     unsupported \r: 042u
25     ignored \%: 1u
26     ignored \&: 1u
27     ignored \): 1u
28     ignored \,: 042u
29     ignored \/: 1u
30     ignored \^: 042u
31     ignored \a: 042u
32     ignored \d: 042u
33     ignored \t: 042u
34     ignored \u: 042u
35     ignored \{: 1u
36     ignored \|: 042u
37     ignored \}: 1u
38     useless \.: 042.u
39     invalid \G: 1u
40     special \ : 042 u
41     special \': 1u
42     special \-: 1u
43     special \0: 042 u
44     special \:: 1u
45     special \_: 1u
46     special \`: 1u
47     special \e: 1u
48     special \~: 042 u
49     break \p: 1u
50     nospace \c: 1u
51     string expansion: 1u
52     register expansion: 03u
53     ignored \O: 042u
54     ignored \Y: 042u
55     ignored \k: 1u
56     special character: 1u
57     ignored \D: 042u
58     ignored \L: 042u
59     ignored \X: 042u
60     ignored \Z: 042u
61     ignored \b: 042u
62     ignored \v: 042u
63     ignored \x: 042u
64     horizontal motion: 042   u
65     horizontal line: 042__u
66     overstrike: 042cdu
67
68OpenBSD                          June 8, 2022                          OpenBSD
69