version 1.255, 2022/02/08 18:30:22 |
version 1.264, 2023/04/28 18:55:09 |
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.\" $OpenBSD$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2012, 2014-2021 Ingo Schwarze <schwarze@openbsd.org> |
.\" Copyright (c) 2012, 2014-2022 Ingo Schwarze <schwarze@openbsd.org> |
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" |
.\" |
.\" Permission to use, copy, modify, and distribute this software for any |
.\" Permission to use, copy, modify, and distribute this software for any |
Line 342 and may exceed the output width. |
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Line 342 and may exceed the output width. |
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Output produced by |
Output produced by |
.Fl T Cm html |
.Fl T Cm html |
conforms to HTML5 using optional self-closing tags. |
conforms to HTML5 using optional self-closing tags. |
Default styles use only CSS1. |
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Equations rendered from |
Equations rendered from |
.Xr eqn 7 |
.Xr eqn 7 |
blocks use MathML. |
blocks use MathML. |
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to translate |
to translate |
.Xr mdoc 7 |
.Xr mdoc 7 |
input to the markdown format conforming to |
input to the markdown format conforming to |
.Lk http://daringfireball.net/projects/markdown/syntax.text\ |
.Lk https://daringfireball.net/projects/markdown/syntax.text\ |
"John Gruber's 2004 specification" . |
"John Gruber's 2004 specification" . |
The output also almost conforms to the |
The output also almost conforms to the |
.Lk http://commonmark.org/ CommonMark |
.Lk https://commonmark.org/ CommonMark |
specification. |
specification. |
.Pp |
.Pp |
The character set used for the markdown output is ASCII. |
The character set used for the markdown output is ASCII. |
Line 766 Messages displayed by |
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Line 765 Messages displayed by |
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follow this format: |
follow this format: |
.Bd -ragged -offset indent |
.Bd -ragged -offset indent |
.Nm : |
.Nm : |
.Ar file : Ns Ar line : Ns Ar column : level : message : macro arguments |
.Ar file : Ns Ar line : Ns Ar column : level : message : macro argument ... |
.Pq Ar os |
.Pq Ar os |
.Ed |
.Ed |
.Pp |
.Pp |
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strings are explained below. |
strings are explained below. |
The name of the |
The name of the |
.Ar macro |
.Ar macro |
triggering the message and its |
triggering the message and its arguments are omitted where meaningless. |
.Ar arguments |
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are omitted where meaningless. |
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The |
The |
.Ar os |
.Ar os |
operating system specifier is omitted for messages that are relevant |
operating system specifier is omitted for messages that are relevant |
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.Ic \&Bl , |
.Ic \&Bl , |
.Ic \&D1 , |
.Ic \&D1 , |
.Ic \&Dl , |
.Ic \&Dl , |
.Ic \&MT , |
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.Ic \&RS , |
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or |
or |
.Ic \&UR |
.Ic \&RS |
block contains nothing in its body and will produce no output. |
block contains nothing in its body and will produce no output. |
.It Sy "empty argument, using 0n" |
.It Sy "empty argument, using 0n" |
.Pq mdoc |
.Pq mdoc |
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layout modifier has an unknown |
layout modifier has an unknown |
.Ar font |
.Ar font |
argument. |
argument. |
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.It Sy "ignoring distance argument" |
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.Pq roff |
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In addition to the margin character, an |
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.Ic \&mc |
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request has a second argument supposed to represent a distance, but the |
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.Nm |
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implementation of |
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.Ic \&mc |
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always ignores the second argument. |
.It Sy "odd number of characters in request" |
.It Sy "odd number of characters in request" |
.Pq roff |
.Pq roff |
A |
A |
Line 1788 it is hard to predict which tab stop position the tab |
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Line 1792 it is hard to predict which tab stop position the tab |
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.Pq mdoc |
.Pq mdoc |
A new sentence starts in the middle of a text line. |
A new sentence starts in the middle of a text line. |
Start it on a new input line to help formatters produce correct spacing. |
Start it on a new input line to help formatters produce correct spacing. |
.It Sy "invalid escape sequence" |
.It Sy "invalid escape sequence argument" |
.Pq roff |
.Pq roff |
An escape sequence has an invalid opening argument delimiter, lacks the |
The argument of an escape sequence is of an invalid form. |
closing argument delimiter, the argument is of an invalid form, or it is |
Invalid escape sequences are ignored. |
a character escape sequence with an invalid name. |
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If the argument is incomplete, |
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.Ic \e* |
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and |
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.Ic \en |
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expand to an empty string, |
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.Ic \eB |
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to the digit |
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.Sq 0 , |
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and |
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.Ic \ew |
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to the length of the incomplete argument. |
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All other invalid escape sequences are ignored. |
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.It Sy "undefined escape, printing literally" |
.It Sy "undefined escape, printing literally" |
.Pq roff |
.Pq roff |
In an escape sequence, the first character |
In an escape sequence, the first character |
Line 2082 and expands to the empty string. |
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Line 2073 and expands to the empty string. |
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.Pq roff |
.Pq roff |
The argument of the escape sequence \e$ is not a digit; |
The argument of the escape sequence \e$ is not a digit; |
the escape sequence expands to the empty string. |
the escape sequence expands to the empty string. |
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.It Sy "negative argument, using 0" |
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.Pq roff |
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A |
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.Ic \&shift |
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request has a negative argument |
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or an argument that is negative due to integer overflow. |
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Macro argument numbering remains unchanged. |
.It Sy "NOT IMPLEMENTED: Bd -file" |
.It Sy "NOT IMPLEMENTED: Bd -file" |
.Pq mdoc |
.Pq mdoc |
For security reasons, the |
For security reasons, the |
Line 2117 The first argument of a |
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Line 2115 The first argument of a |
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request is neither a single ASCII character |
request is neither a single ASCII character |
nor a single character escape sequence. |
nor a single character escape sequence. |
The request is ignored including all its arguments. |
The request is ignored including all its arguments. |
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.It Sy "skipping unusable escape sequence" |
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.Pq roff |
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The first argument of an |
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.Ic mc |
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request is neither a single ASCII character |
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nor a single character escape sequence. |
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All arguments are ignored and printing of a margin character is disabled. |
.It Sy "missing manual name, using \(dq\(dq" |
.It Sy "missing manual name, using \(dq\(dq" |
.Pq mdoc |
.Pq mdoc |
The first call to |
The first call to |
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with invalid arguments |
with invalid arguments |
.El |
.El |
The excess arguments are ignored. |
The excess arguments are ignored. |
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.El |
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.Ss "Errors related to escape sequences" |
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.Bl -ohang |
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.It Sy "incomplete escape sequence" |
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.Pq roff |
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The end of the input line is encountered |
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while parsing the argument of an escape sequence. |
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In this case, |
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.Ic \e* |
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and |
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.Ic \en |
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expand to an empty string, |
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.Ic \eB |
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to the digit |
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.Sq 0 , |
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and |
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.Ic \ew |
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to the length of the incomplete argument. |
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All other incomplete escape sequences are ignored. |
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.It Sy "invalid special character" |
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.Pq roff |
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A special character escape sequence is invalid, |
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for example a Unicode sequence pointing to a surrogate |
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or beyond the Unicode range, a \e[char...] escape sequence |
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representing a control character or pointing beyond the |
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.Vt unsigned char |
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range, or an invalid variable-length form |
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of a single-byte character escape sequence, for example writing |
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.Qq \e[e] |
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or |
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.Qq \e[~] |
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instead of |
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.Qq \ee |
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or |
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.Qq \e~ , |
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respectively. |
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The escape sequence is ignored. |
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.It Sy "unknown special character" |
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.Pq roff |
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The name given in a special character escape sequence is not known to |
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.Nm . |
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The escape sequence is ignored. |
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.It Sy "invalid escape argument delimiter" |
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.Pq roff |
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An escape sequence that expects a numerical argument |
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attempts to employ one of the characters |
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.Qq " %&()*+-./0123456789:<=>" |
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as an argument delimiter. |
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The escape sequence is ignored including the invalid opening delimiter |
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and the rest of the argument may appear as output text. |
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While various characters can be used as argument delimiters, |
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using the apostrophe-quote character |
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.Pq Sq \(aq |
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is recommended for readability and robustness. |
.El |
.El |
.Ss Unsupported features |
.Ss Unsupported features |
.Bl -ohang |
.Bl -ohang |