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Clarify that key comparison is ordinal #993

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Clarify that key comparison is ordinal #993

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e793037
Clarify that key comparison is ordinal (closes #966)
marzer Sep 27, 2023
7cee7df
Clarify comment, use \x now that we have it
arp242 Jun 29, 2026
8916f8c
Keys → Quoted keys
arp242 Jun 29, 2026
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -2,8 +2,12 @@

## unreleased

- Clarify that comparison for quoted keys is ordinal and doesn't do Unicode
normalization ([#993])

- Clarify that tables typically cannot be nested infinitely [#1087]).

[#993]: https://github.com/toml-lang/toml/pull/993
[#1087]: https://github.com/toml-lang/toml/pull/1087

## 1.1.0 / 2025-12-18
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14 changes: 14 additions & 0 deletions toml.md
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Expand Up @@ -194,6 +194,20 @@ spelling = "favorite"
"spelling" = "favourite"
```

Quoted keys are considered identical if their code point sequences are the same.
It is possible to create distinct keys that appear visually identical. Doing so
is discouraged:

```toml
# VALID BUT DISCOURAGED

# prénom = "Françoise", using pre-composed LATIN SMALL LETTER E WITH ACUTE (U+00E9, NFC)
"pr\xe9nom" = "Françoise"

# prénom = "Françoise", using COMBINING ACUTE ACCENT (U+0301, NFD)
"pre\u0301nom" = "Françoise"
```

As long as a key hasn't been directly defined, you may still write to it and to
names within it.

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