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説明
Describe the issue
Digit separators are not supported: if you write 20_000_000 for example, 20 will be number-colored, while _000_000 will be treated as invalid.
Which language seems to have the issue? C#
Are you using highlight or highlightAuto?
highlight
Sample Code to Reproduce
int i = 20_000_000;

Expected behavior
the entirety of the number to be highlighted as a number, like on GitHub:

Additional context None