util.string.width

local width = util.string.width(
    input,
    ambiguous_as_double = false,
    default_width = 0
)

Type	Name	Description
`string` \| `int`	input	String to measure, or a single codepoint
`bool`	ambiguous_as_double	When true - East Asian "ambiguous width" characters count as double-width instead of single-width
`int`	default_width	Width to use for codepoints with no defined display width

Type	Name	Description
`int`	width	Total display width in terminal columns

Measure the width of a plain ASCII string

local width = util.string.width("hello")

core.engine.print("info", width) -- 5

Wide characters count as 2 columns

local width = util.string.width("中文")

core.engine.print("info", width) -- 4

Measure the width of a single codepoint

local width = util.string.width(util.string.byte("中"))

core.engine.print("info", width) -- 2

Treat ambiguous-width characters as double-width

local width = util.string.width("±", true)

core.engine.print("info", width) -- 2