Re: [luatex] Identity-V fonts in RTT direction

[luigi scarso]

On Mon, 12 Jan 2026 at 21:26, Hironori KITAGAWA via luatex <luatex@tug.org>
wrote:

> With

   > res.identity='vertical'; res.writingmode='vertical'
> commented, position of glyphs seems fine.
> But they are written by three TJ operators in a PDF,
> which makes text extraction from the PDF "incorrect".
>
> BT
> /F65 9.999991 Tf
> 1 0 0 1 72 704.6474 Tm [<094E>]TJ
> 1 0 0 1 72 692.9274 Tm [<097B>]TJ
> 1 0 0 1 72 681.6774 Tm [<0356>]TJ
> ET
>
> The reason why I want to use
>    > res.identity='vertical'; res.writingmode='vertical'
> is text extraction.
> With that, glyphs are written by one TJ operator:
>
> BT
> /F65 9.999991 Tf
> 1 0 0 1 72 704.6474 Tm [<094E>-172<097B>-125<0356>]TJ
> ET
>
>
Ok,  I need to check this.

--
luigi