When using this tool to generate a CJK font library, I encountered an issue that causes an error when loading the font.

[lwang1997]

In the code, the ids_size variable is of type uint8_t. However, the font library generated by the tool has a list_length of 256, causing ids_size to wrap around to 0. This results in lv_mem_alloc failing to allocate RAM.
[
HSBR26.txt
](url)

[lwang1997]

In the cmap_split function, can these two conditions be changed to less than 255? Since path.end is incremented by 1, if all_codepoints[i] - all_codepoints[j] equals 255, it satisfies the condition of being less than 256. After path.end + 1, it becomes 256. Could this be the reason why list_length exceeds 255?

[kisvegabor]

I'm not the developer of the font converter, but it seems like an oversight to me. Can you send a pull request to fix it?