Chinese characters too small

[skysky97]

Describe the bug
Chinese characters are much more smaller than those in gnome-terminal.

Screenshots

Environment details
kitty 0.24.1 (2151969) created by Kovid Goyal
Linux ubuntu 5.4.0-26-generic

Additional context
Try to reproduce the problem with kitty --config NONE, the same problem.

[kovidgoyal]

How big they are depends on the font used for them. Pick a different
font for chinese characters using the symbol_map directive in
kitty.conf, or using fontconfig.

[skysky97]

I have only 'noto' font installed. I don't know which font gnome-terminal actually used. Can you help me? @kovidgoyal

[kovidgoyal]

If its the same font then its most likely that gnome terminal is rendering it at a higher font size. kitty scales fallback fonts so that their reported height fits within the cell height. You can try using adjust_line_height in kitty.conf to increasethe cell height.

[skysky97]

Increasing the cell height does help. But it wastes some space...

[page-down]

I can reproduce the issue.

Some (e.g. Noto) two character width fonts used with mono fonts (e.g. Hack, the OS default one) are particularly small at standard font size (e.g. font_size=10).
Although it seems to have a very sufficient height.

The font combination works fine in Konsole, filling the entire line height.
I don't have this problem in macOS, it is pretty well filled.

[kovidgoyal]

Yeah, there isn't much that can be done about that, essentially one would
need to fine tune the metrics of the involved fonts to make them more
compatible. In theory I could add a config parameter to do this in
kitty, maybe some rainy day.