[utf8]
type = 'table'
[[.source]]
type = 'global'
``````````
type = 'library'
name = 'utf8'

<default>
type = 'function'
parent = {
    1 = {
        type = 'global',
        name = 'utf8',
    },
    2 = {
        type = 'library',
        name = 'utf8',
    }
}

[char]
[[.args]]
name = 'code'
type = 'integer'
``````````
type = '...'
[[.returns]]
type = 'string'

[charpattern]
type = 'string'
code = [=['[\0-\x7F\xC2-\xF4][\x80-\xBF]*']=]

[codes]
[[.args]]
type = 'string'
[[.returns]]
type = 'function'
returns = {
    1 = {
        name = 'p',
        type = 'integer',
    },
    2 = {
        name = 'c',
        type = 'integer',
    }
}

[codepoint]
[[.args]]
type = 'string'
``````````
name = 'i'
type = 'integer'
optional = 'after'
default = 1
``````````
name = 'j'
type = 'integer'
optional = 'self'
[[.returns]]
name = 'code'
type = 'integer'
``````````
type = '...'

[len]
[[.args]]
type = 'string'
``````````
name = 'i'
type = 'integer'
optional = 'after'
default = 1
``````````
name = 'j'
type = 'integer'
optional = 'self'
default = -1
[[.returns]]
type = 'integer'
``````````
name = 'errpos'
type = 'integer'
optional = 'self'

[offset]
[[.args]]
type = 'string'
``````````
name = 'n'
type = 'integer'
``````````
name = 'i'
type = 'integer'
[[.returns]]
name = 'p'
type = 'integer'