Command/definebreakpoint

\definebreakpoint

Syntax (autogenerated)

\definebreakpoint[...][...][...=...,...]
[...]	name
[...]	character
type	1 2 3 4 5
nleft	number
nright	number
left	command
middle	command
right	command
range	yes no
language	language

Syntax

\definebreakpoint[...][...][...=...]
[...]	name of breakpoint set to add to
[...]	character at which to break
language	two-letter code: language for which this breakpoint applies
nleft	number: minimal characters to left to allow breaking' here'
nright	number: minimal characters to right to allow breaking here
type	1 ...1...1 / ... place breaking character before linebreak 2 ...2... / 2-... place breaking character after linebreak, hyphen inside it. (Used if a break happens before the parenthesised part of a word.) 3 ...3...-3 / ... place breaking character before linebreak, hyphen inside it. (Used if a break happens after the parenthesised part of a word.) 4 ...4...4 / 4... place breaking character on both sides of linebreak 5 specify pattern with left, middle, and right.
middle	'how breaking character should display when no break takes place. Used in combination with {{{1}}}.
left	how breaking character should display at break, at end of first line. Used in combination with {{{1}}}.
right	how breaking character should display at break, at start of second line. Used in combination with {{{1}}}.

Description

\definebreakpoint[setname][?][...=...] defines a breakpoint at ?, and makes it a member of a set that can be activated with \setbreakpoints[setname]. The set must be initialized with \definebreakpoints[setname].

Example

This is how the compound breakpoint set is defined in typo-brk.mkiv

\definebreakpoint [compound] [+] [nleft=3,nright=3,type=1]
\definebreakpoint [compound] [-] [nleft=3,nright=3,type=1]
\definebreakpoint [compound] [/] [nleft=3,nright=3,type=1]
\definebreakpoint [compound] [(] [nleft=3,nright=3,type=2]
\definebreakpoint [compound] [)] [nleft=3,nright=3,type=3]

An illustration of a custom breakpoint of type 5:

\definebreakpoints[test]

\definebreakpoint [test] [?] [type=5,left=L,right=R,middle=M]

\setbreakpoints[test]

\setuppapersize[A7]

\starttext \showframe
xxxx?xxxx?xxxx?xxxx?xxxx?xxxx?xxxx?xxxx\par
\stoptext

More Examples

Hyphenate at any character

In some cases, you might need not to break at a hyphen or other breakpoint, but don't have a chance to put \unhyphenated explicitly. In this case, you may omit the second argument and activate the following breakpoint set instead.

\define[2]\mycommand{
    \startxrow
    \startxcell cmd #1 \stopxcell
    \startxcell #2 \stopxcell
    \stopxrow
    }
\starttext

\setupxtable[width=5cm]
\startxtable
\mycommand{A}{lsfkgjfk-gshgkhigewhgajkdkfkalhfdklahfkhaakfakfh}
\stopxtable

Now setting no specific breakpoint character set:

\definebreakpoint[mybreaks][][type=1]
\setbreakpoints[mybreaks]

\setupxtable[width=5cm]
\startxtable
\mycommand{A}{lsfkgjfk-gshgkhigewhgajkdkfkalhfdklahfkhaakfakfh}
\stopxtable

\stoptext

See also

• Hyphenation
• \hyphenation to define the hyphenation of a specific word
• \startexceptions to define language-specific hyphenations
• \- to define an ad-hoc breakpoint
• \unhyphenated to prevent hyphenation
• \doublehyphendemerits to penalize hyphenation on consecutive lines
• \setupalign justification parameters to tweak the auto-hyphenation algorithm
• \definebreakpoints to initialize a breakpoint set
• \definebreakpoint to add to a breakpoint set
• \setbreakpoints to activate a breakpoint set
• \language to activate a language's settings, including hyphenation
• Wrapping
• typo-brk.mkiv

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