version 1.1, 2017/02/08 03:03:20 |
version 1.3, 2022/06/08 13:24:01 |
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.Dd July 6, 2014 |
.\" $OpenBSD$ |
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.Dd $Mdocdate$ |
.Dt ESC-B 1 |
.Dt ESC-B 1 |
.Os OpenBSD |
.Os |
.Sh NAME |
.Sh NAME |
.Nm esc-B |
.Nm esc-B |
.Nd the roff escape B sequence: validate numerical expression |
.Nd the roff escape B sequence: validate numerical expression |
Line 32 parentheses containing number: \B'(42)' |
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Line 33 parentheses containing number: \B'(42)' |
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complex expression: \B'3+(3*(5==5*2)*4)+(3*5)/2' |
complex expression: \B'3+(3*(5==5*2)*4)+(3*5)/2' |
.br |
.br |
other delimiter: \Bx1+1x |
other delimiter: \Bx1+1x |
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.Ss Argument delimiters |
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unsupported \e!: \B\!42\!u |
.br |
.br |
no closing delimiter: \B'1+1 |
unsupported \er: \B\r42u |
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.br |
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ignored \e%: \B\%42\%u |
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.br |
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ignored \e&: \B\&42\&u |
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.br |
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ignored \e): \B\)42\)u |
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.br |
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ignored \e,: \B\,42\,u |
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.br |
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ignored \e/: \B\/42\/u |
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.br |
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ignored \e^: \B\^42\^u |
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.br |
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ignored \ea: \B\a42\au |
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.br |
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ignored \ed: \B\d42\du |
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.br |
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ignored \et: \B\t42\tu |
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.br |
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ignored \eu: \B\u42\uu |
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.br |
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ignored \e{: \B\{42\{u |
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.br |
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ignored \e|: \B\|42\|u |
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.br |
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ignored \e}: \B\}42\}u |
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.br |
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useless \e.: \B\.42.u |
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.\".br |
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.\"XXX useless \e\e: \B\\42\\u |
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.br |
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invalid \eG: \B\G42Gu |
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.br |
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special \e\ : \B\ 42\ u |
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.br |
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special \e\(aq: \B\'42\'u |
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.br |
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special \e-: \B\-42\-u |
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.br |
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special \e0: \B\042\0u |
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.br |
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special \e:: \B\:42\:u |
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.br |
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special \e_: \B\_42\_u |
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.br |
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special \e\(ga: \B\`42\`u |
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.br |
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special \ee: \B\e42\eu |
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.br |
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special \e~: \B\~42\~u |
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.br |
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break \ep: \B\p42\pu |
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.br |
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nospace \ec: \B\c42\cu |
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.\".br |
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.\"XXX skipchar \ec: \B\z42\zu |
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.br |
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.ds mystr x42xu |
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string expansion: \B\*[mystr] |
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.br |
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.nr myreg 23 |
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register expansion: \B\n[myreg]u |
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.br |
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ignored \eO: \B\O142\O2u |
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.br |
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ignored \eY: \B\Y[mystr]42\Y[mystr]u |
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.br |
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ignored \ek: \B\k[myreg]42\k[myreg]u |
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.br |
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special character: \B\(hy42\(hyu |
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.br |
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ignored \eD: \B\D't 1'42\D't 2'u |
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.br |
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ignored \eL: \B\L'2'42u |
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.br |
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ignored \eX: \B\X'foo'42\X'bar'u |
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.br |
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ignored \eZ: \B\Z'foo'42\Z''u |
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.br |
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ignored \eb: \B\b'2'42\b''u |
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.br |
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ignored \ev: \B\v'2'42\v'0'u |
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.br |
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ignored \ex: \B\x'2'42\v'0'u |
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.br |
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horizontal motion: \B\h'1'42\h'3'u |
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.br |
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horizontal line: \B\l'4'42\l'2'u |
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.br |
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overstrike: \B\o'ab'42\o'cd'u |