🚀 Feature Proposal

Use formatting functions with interpolation and plurals in the nesting "$t" function.

Motivation

This is useful if you need to reference other keys in a translation and need to change both the pluralization and the formatting simultaneously.

Example

{
    "boy": "Boy",
    "boy_other": "Boys",
    "girl": "Girl",
    "girl_other": "Girls",
    "girlsAndBoys": "They have {{girls}} $t(girl, { \"count\": {{girls}} }, lowercase) and {{boys}} $t(boy, { \"count\": {{boys}} }, lowercase)",
}

Result:

i18next.t("girlsAndBoys", { girls: 3, boys: 2 }); // -> "They have 3 girls and 2 boys"

Currently, both $t(girl, { \"count\": {{girls}} }, lowercase) and $t($t(boy, { \"count\": {{boys}} }), lowercase) will not work. The error message of the latter: i18next::translator: missingKey en $t(boy $t(boy

I can PR based on #1419.