bug#57066: 29.0.50; Complex emoji overlaps with text

[Protesilaos Stavrou]

> From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> Date: Thu, 11 Aug 2022 15:24:38 +0900
>
> Oops, it breaks non-HarfBuzz builds.  Pleae try below instead.
>
>                                    YAMAMOTO Mitsuharu
>                               mituharu@math.s.chiba-u.ac.jp
>
> diff --git a/src/ftcrfont.c b/src/ftcrfont.c
> index 39ea068556..d5d3e440af 100644
> --- a/src/ftcrfont.c
> +++ b/src/ftcrfont.c
> @@ -568,7 +568,11 @@ ftcrhbfont_begin_hb_font (struct font *font, double 
> *position_unit)
>  
>    ftcrfont_info->ft_size = ft_face->size;
>    hb_font_t *hb_font = fthbfont_begin_hb_font (font, position_unit);
> -  if (ftcrfont_info->bitmap_position_unit)
> +  /* HarfBuzz 5 correctly scales bitmap-only fonts without position
> +     unit adjustment.
> +     (https://github.com/harfbuzz/harfbuzz/issues/489) */
> +  if (!hb_version_atleast (5, 0, 0)
> +      && ftcrfont_info->bitmap_position_unit)
>      *position_unit = ftcrfont_info->bitmap_position_unit;
>  
>    return hb_font;

Thank you!  I just tried it and it works on my end.

I only tested it with a regular 'make'.  Do you want me to use other
build options as well?

-- 
Protesilaos Stavrou
https://protesilaos.com