Add support for digit separators #73
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srawlins
approved these changes
Jul 31, 2024
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This updates the grammar to allow underscores within numbers (but not as the first digit), using some examples from https://github.com/dart-lang/language/blob/main/working/digit-separators/feature-specification.md#examples as tests.
I committed this in two parts:
This is to make it easier to see the impact of the change to the grammar (by looking at the second changeset) without the whole block being new code.
Note: This change does allow trailing underscores (which are not valid), because that way the colouring will still work out while you're typing a literal with an underscore (you'll ofc still see an analysis error while it's invalid) and it keeps the regex simpler.
@srawlins