Left/Right

Delimiter matching.

The lr function allows you to match two delimiters and scale them with the content they contain. While this also happens automatically for delimiters that match syntactically, lr allows you to match two arbitrary delimiters and control their size exactly. Apart from the lr function, Typst provides a few more functions that create delimiter pairings for absolute, ceiled, and floored values as well as norms.

To prevent a delimiter from being matched by Typst, and thus auto-scaled, escape it with a backslash. To instead disable auto-scaling completely, use set math.lr(size: 1em).

Example

$ [a, b/2] $
$ lr(]sum_(x=1)^n], size: #50%) x $
$ abs((x + y) / 2) $
$ \{ (x / y) \} $
#set math.lr(size: 1em)
$ { (a / b), a, b in (0; 1/2] } $

Function

`lr`
Element
Element
Element functions can be customized with `set` and `show` rules.

Scales delimiters.

While matched delimiters scale by default, this can be used to scale unmatched delimiters and to control the delimiter scaling more precisely.

math.lr(size:
relative
,content)->content

`size`
relative
Settable
Settable
Settable parameters can be set using the `set` rule, changing the default value used thereafter.

The size of the brackets, relative to the height of the wrapped content.

Default value:

100% + 0pt

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The delimited content, including the delimiters.

`mid`
Element
Element
Element functions can be customized with `set` and `show` rules.

Scales delimiters vertically to the nearest surrounding lr() group.

$ { x mid(|) sum_(i=1)^n w_i|f_i (x)| < 1 } $

math.mid(content)->content

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The content to be scaled.

`abs`

Takes the absolute value of an expression.

$ abs(x/2) $

math.abs(size:
relative
,content)->content

`size`
relative

The size of the brackets, relative to the height of the wrapped content.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The expression to take the absolute value of.

`norm`

Takes the norm of an expression.

$ norm(x/2) $

math.norm(size:
relative
,content)->content

`size`
relative

The size of the brackets, relative to the height of the wrapped content.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The expression to take the norm of.

`floor`

Floors an expression.

$ floor(x/2) $

math.floor(size:
relative
,content)->content

`size`
relative

The size of the brackets, relative to the height of the wrapped content.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The expression to floor.

`ceil`

Ceils an expression.

$ ceil(x/2) $

math.ceil(size:
relative
,content)->content

`size`
relative

The size of the brackets, relative to the height of the wrapped content.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The expression to ceil.

`round`

Rounds an expression.

$ round(x/2) $

math.round(size:
relative
,content)->content

`size`
relative

The size of the brackets, relative to the height of the wrapped content.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

The expression to round.

Left/Right

Example

Function

lrElementElementElement functions can be customized with set and show rules.

sizerelativeSettableSettableSettable parameters can be set using the set rule, changing the default value used thereafter.

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

midElementElementElement functions can be customized with set and show rules.

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

abs

sizerelative

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

norm

sizerelative

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

floor

sizerelative

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

ceil

sizerelative

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

round

sizerelative

bodycontentRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.

Search

`lr`
Element
Element
Element functions can be customized with `set` and `show` rules.

`size`
relative
Settable
Settable
Settable parameters can be set using the `set` rule, changing the default value used thereafter.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`mid`
Element
Element
Element functions can be customized with `set` and `show` rules.

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`abs`

`size`
relative

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`norm`

`size`
relative

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`floor`

`size`
relative

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`ceil`

`size`
relative

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.

`round`

`size`
relative

`body`
content
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.