Fix display of annotation for double width characters #46
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magurotuna commented Sep 4, 2021
Comment on lines +638 to +644
| let expected = r#" --> <current file>:1:1 | ||
| | | ||
| 1 | お寿司 | ||
| | ^^^^^^ Sushi1 | ||
| 2 | 食べたい🍣 | ||
| | ---- note: Sushi2 | ||
| |"#; |
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magurotuna commented Sep 4, 2021
Comment on lines +601 to +607
| let expected = r#" --> <current file>:1:3 | ||
| | | ||
| 1 | おはよう | ||
| | _____^ | ||
| 2 | | ございます | ||
| | |______^ Good morning | ||
| |"#; |
magurotuna commented Sep 4, 2021
Comment on lines +573 to +577
| let expected = r#" --> <current file>:1:7 | ||
| | | ||
| 1 | こんにちは、世界 | ||
| | ^^^^ world | ||
| |"#; |
magurotuna commented Sep 4, 2021
Comment on lines +668 to +672
| let expected = r#" --> <current file>:1:7 | ||
| | | ||
| 1 | こんにちは、新しいWorld！ | ||
| | ^^^^^^^^^^^ New world | ||
| |"#; |
| Thank you so much for the patch! It reads very clear and not just fixes the bug, but also improves the code. |
zbraniecki approved these changes Sep 4, 2021
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Hi there.
We're using this crate in denoland/deno_lint to display pretty diagnostics of the linter. By chance, I found that this crate doesn't work well if the source includes double width characters like:
Specifically, if we attempt to point to
はin this snippet by passing(15, 16)as range, annotate-snippets will give us:where obviously
^points to the wrong position.These characters take up twice the size of ordinary characters like the alphabet, so displaying annotation for them requires special handling, which I implemented in this patch.