Cambios
for better compatiblity, define prefered parameter aliases ltr= and rtl= (instead of just parameters 2 and 3 which may contain "=" signs); note also that parameter 1=lang is optional
{{#switch:{{lc:{{#if:{{{lang|}}}|{{{lang|}}}|{{#if:{{{1|}}}|{{{1|}}}|{{int:lang}}}}}}}}
|ar|arc|arz|azb|bcc|ckb|bqi|dv|fa|fa-af|glk|ha|he|kk-arab|kk-cn|ks|ku-arab|mzn|pnb|prd|ps|sd|ug|ur|ydd|yi
={{#if:{{{rtl|}}}|{{{rtl|}}}|{{#if:{{{2|}}}|{{{2|}}}|rtl}}}}
|#default
={{#if:{{{ltr|}}}|{{{ltr|}}}|{{#if:{{{3|}}}|{{{3|}}}|ltr}}}}
}}<noinclude>{{documentation}}</noinclude>
|ar|arc|arz|azb|bcc|ckb|bqi|dv|fa|fa-af|glk|ha|he|kk-arab|kk-cn|ks|ku-arab|mzn|pnb|prd|ps|sd|ug|ur|ydd|yi
={{#if:{{{rtl|}}}|{{{rtl|}}}|{{#if:{{{2|}}}|{{{2|}}}|rtl}}}}
|#default
={{#if:{{{ltr|}}}|{{{ltr|}}}|{{#if:{{{3|}}}|{{{3|}}}|ltr}}}}
}}<noinclude>{{documentation}}</noinclude>
