Help using DeclareUnicodeCharacter for russian

> Sent: Friday, June 11, 2021 at 1:25 PM
> From: "Jacob Bachmeyer" <[email protected]>
> To: [email protected]
> Cc: "help-texinfo gnu" <[email protected]>
> Subject: Re: Help using DeclareUnicodeCharacter for russian
>
> [email protected] wrote:
> > I am trying to declare unicode characters for russian
> >
> > @macro ru
> >
> > \DeclareUnicodeCharacter{1040}{\ensuremath\rua}
> > \DeclareUnicodeCharacter{1041}{\ensuremath\rube}
> > \DeclareUnicodeCharacter{1042}{\ensuremath\ruve}
> > \DeclareUnicodeCharacter{1043}{\ensuremath\rughe}
> > \DeclareUnicodeCharacter{1044}{\ensuremath\rude}
> > \DeclareUnicodeCharacter{1045}{\ensuremath\ruie}
> > \DeclareUnicodeCharacter{1046}{\ensuremath\ruzhe}
> > \DeclareUnicodeCharacter{1047}{\ensuremath\ruze}
> >
> > @end macro
> >
>
> Instead of "@macro"/"@end macro", try "@tex"/"@end tex".
>
>
> -- Jacob

I have tried that but still get the same problem.

Have also played with

@documentencoding UTF-8
@documentencoding ISO-8859-1
@documentencoding ISO-8859-2

before calling the unicode declarations.