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Say that ... range patterns are rejected in the 2021 edition #1114

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Merged
ehuss merged 2 commits into from
Dec 11, 2021
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Say that ... range patterns are rejected in the 2021 edition #1114

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4725958
Say that `...` range patterns are rejected in the 2021 edition
mattheww Dec 3, 2021
b83fcc1
Make it clearer that `..=` range patterns work in all editions
mattheww Dec 3, 2021
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4 changes: 2 additions & 2 deletions src/patterns.md
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Expand Up @@ -443,8 +443,6 @@ A half-open range pattern in the style `a..` cannot be used to match within the
A pattern `a..=b` must always have a ≤ b. It is an error to have a range pattern
`10..=0`, for example.

The `...` syntax is kept for backwards compatibility.

Range patterns only work on scalar types. The accepted types are:

* Integer types (u8, i8, u16, i16, usize, isize, etc.).
Expand Down Expand Up @@ -535,6 +533,8 @@ minimum to maximum value. The range of values for a `char` type are precisely th
ranges containing all Unicode Scalar Values: `'\u{0000}'..='\u{D7FF}'` and
`'\u{E000}'..='\u{10FFFF}'`.

> **Edition Differences**: Before the 2021 edition, closed range patterns may be written using `...` in place of `..=`, with the same meaning.
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@bjorn3 bjorn3 Dec 3, 2021

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Can you clarify that before the 2021 edition ..= is also allowed?

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@mattheww mattheww Dec 3, 2021

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I've reworded in b83fcc1


## Reference patterns

> **<sup>Syntax</sup>**\
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