[Lynx-dev] Only half CJK characters displayed

[gyc]

Hi devs,
first of all, thanks a lot for the effort of developing a feature-rich 
and fully functional web browser. I just migrated from Firefox to here.

I encountered some problems rendering CJK fonts inside browser. Steps to
reproduce:

1. Lynx 2.8.9rel.1, Alacritty, Sway WM and Noto CJK fonts
2. Visit Japanese Wikipedia. Only half characters shown.
     Screenshot: <https://w.wiki/qzr>
3. Open another terminal and `cat` the page cache at /tmp/lynxXXXX/*.html
4. Close current Lynx instance and relaunch Lynx in another terminal.
5. Visit Japanese Wikipedia, now full characters are shown.
     Screenshot: <https://w.wiki/qzt>
6. Delete font cache in ~/.cache
7. Visit Japanese Wikipedia, half characters shown again.

I tried with other text editors and text-based web browsers such as `vim`,
`emacs` and `w3m`. All of them correctly displays characters at first
time, after clearing font cache. Also as noted above, `cat` raw HTML
directly inside `alacritty` also displays full characters.

Therefore I suspect that there might be some bug with `lynx` that
hinders the generation of font cache. I'm not proficient with
programming but I hope this can be fixed in a future release.

Cheers