mandoc/mandoc_char.7 - diff

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Diff for /mandoc/mandoc_char.7 between version 1.62 and 1.66

version 1.62, 2015/03/30 16:06:14

version 1.66, 2017/06/02 12:43:52

Line 2

.\"

.\" Permission to use, copy, modify, and distribute this software for any

.\" purpose with or without fee is hereby granted, provided that the above

Line 49 names; instead, provide ASCII transcriptions of the na

.Ss Dashes and Hyphens

In typography there are different types of dashes of various width:

the hyphen (-),

the minus sign (\-),

the minus sign (\(mi),

the en-dash (\(en),

and the em-dash (\(em).

.Pp

Line 62 blue-eyed

lorry-driver

.Ed

.Pp

If a word on a text input line contains a hyphen, a formatter may decide

to insert an output line break after the hyphen if that helps filling

the current output line, but the whole word would overflow the line.

If it is important that the word is not broken across lines in this

way, a zero-width space

.Pq Sq \e&

can be inserted before or after the hyphen.

While

.Xr mandoc 1

never breaks the output line after hyphens adjacent to a zero-width

space, after any of the other dash- or hyphen-like characters

represented by escape sequences, or after hyphens inside words in

macro arguments, other software may not respect these rules and may

break the line even in such cases.

.Pp

Some

.Xr roff 7

implementations contains dictionaries allowing to break the line

at syllable boundaries even inside words that contain no hyphens.

Such automatic hyphenation is not supported by

.Xr mandoc 1 ,

which only breaks the line at whitespace, and inside words only

after existing hyphens.

.Pp

The mathematical minus sign is used for negative numbers or subtraction.

It should be written as

.Sq \e- :

.Sq \e(mi :

.Bd -unfilled -offset indent

a = 3 \e- 1;

a = 3 \e(mi 1;

b = \e-2;

b = \e(mi2;

.Ed

.Pp

The en-dash is used to separate the two elements of a range,

Line 145 even on request and macro lines.

Line 169 even on request and macro lines.

.Ss Accents

In output modes supporting such special output characters, for example

.Fl T Cm pdf ,

and sometimes less consistently in

.Fl T Cm utf8 ,

some

.Xr roff 7

formatters convert the following ASCII input characters to the

Line 153 following Unicode special output characters:

Line 179 following Unicode special output characters:

.It \(ga Ta U+2018 Ta left single quotation mark

.It \(aq Ta U+2019 Ta right single quotation mark

.It \(ti Ta U+02DC Ta small tilde

.It \(ha Ta U+02C6 Ta modifier letter circumflex

.El

.Pp

In prose, this automatic substitution is often desirable;

Line 163 escaping to render as follows:

Line 190 escaping to render as follows:

.It \e(ga Ta U+0060 Ta grave accent

.It \e(aq Ta U+0027 Ta apostrophe

.It \e(ti Ta U+007E Ta tilde

.It \e(ha Ta U+005E Ta circumflex accent

.El

.Ss Periods

The period

Line 255 Text markers:

Line 283 Text markers:

.It \e(sh Ta \(sh Ta hash (pound)

.It \e(CR Ta \(CR Ta carriage return

.It \e(OK Ta \(OK Ta check mark

.It \e(CL Ta \(CL Ta club suit

.It \e(SP Ta \(SP Ta spade suit

.It \e(HE Ta \(HE Ta heart suit

.It \e(DI Ta \(DI Ta diamond suit

.El

.Pp

Legal symbols:

Line 348 Arrows:

Line 380 Arrows:

.It \e(uA Ta \(uA Ta up double-arrow

.It \e(dA Ta \(dA Ta down double-arrow

.It \e(vA Ta \(vA Ta up-down double-arrow

.It \e(an Ta \(an Ta horizontal arrow extension

.El

.Pp

Logical:

Line 426 Mathematical:

Line 459 Mathematical:

.It \e(Ah Ta \(Ah Ta aleph

.It \e(Im Ta \(Im Ta imaginary

.It \e(Re Ta \(Re Ta real

.It \e(wp Ta \(wp Ta Weierstrass p

.It \e(pd Ta \(pd Ta partial differential

.It \e(-h Ta \(-h Ta Planck constant over 2\(*p

.It \e[12] Ta \[12] Ta one-half

.It \e[hbar] Ta \[hbar] Ta Planck constant over 2\(*p

.It \e[14] Ta \[14] Ta one-fourth

.It \e(12 Ta \(12 Ta one-half

.It \e[34] Ta \[34] Ta three-fourths

.It \e(14 Ta \(14 Ta one-fourth

.It \e(34 Ta \(34 Ta three-fourths

.It \e(18 Ta \(18 Ta one-eighth

.It \e(38 Ta \(38 Ta three-eighths

.It \e(58 Ta \(58 Ta five-eighths

.It \e(78 Ta \(78 Ta seven-eighths

.It \e(S1 Ta \(S1 Ta superscript 1

.It \e(S2 Ta \(S2 Ta superscript 2

.It \e(S3 Ta \(S3 Ta superscript 3

.El

.Pp

Ligatures:

Line 564 Units:

Line 606 Units:

.It \e(fm Ta \(fm Ta minute

.It \e(sd Ta \(sd Ta second

.It \e(mc Ta \(mc Ta micro

.It \e(Of Ta \(Of Ta Spanish female ordinal

.It \e(Om Ta \(Om Ta Spanish masculine ordinal

.El

.Pp

Greek letters:

Line 720 In

Line 764 In

.Fl T Ns Cm ascii ,

the

\e(ss, \e(nm, \e(nb, \e(nc, \e(ib, \e(ip, \e(pp, \e[sum], \e[product],

\e[coproduct], \e(gr, \e(\-h, and \e(a. special characters render

\e[coproduct], \e(gr, \e(-h, and \e(a. special characters render

differently between mandoc and groff.

.It

.Fl T Ns Cm html

.Fl T Ns Cm html ,

and

.Fl T Ns Cm xhtml ,

the \e(\(ti=, \e(nb, and \e(nc special characters render differently

between mandoc and groff.

.It

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