On Sun, Jun 02, 2024 at 11:58:46PM +0100, Gavin Smith wrote:
> I agree that it is undefined behaviour. makeinfo could flag it as an
> error. It may not be possible to modify texinfo.tex to stop reading
> the line at the end of the first line for input line
>
> @cindex aaa@
> bbb
>
> Perhaps a warning like this (of course the same change would have to
> be made to the XS parser):
Looks good to me.
>
> diff --git a/tp/Texinfo/ParserNonXS.pm b/tp/Texinfo/ParserNonXS.pm
> index d39b0b14bd..a6bfab8014 100644
> --- a/tp/Texinfo/ParserNonXS.pm
> +++ b/tp/Texinfo/ParserNonXS.pm
> @@ -5428,6 +5428,12 @@ sub _handle_other_command($$$$$)
> $command), $source_info);
> }
> if ($command eq "\n") {
> + if ($self->_top_context() eq 'ct_line') {
> + $self->_line_warn(
> + "\@ should not occur at end of argument to line command",
> + $source_info);
> + }
> +
> $current = _end_line($self, $current, $source_info);
> $retval = $GET_A_NEW_LINE;
> }
