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Improve identifier defintion in the reference

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Fixes #28706
This commit is contained in:
Steve Klabnik 2015-09-30 13:42:57 -04:00
parent 3e6d7243ae
commit 2a787a23d1
1 changed files with 7 additions and 2 deletions
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9
src/doc/reference.md
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@ -76,8 +76,13 @@ An identifier is any nonempty Unicode[^non_ascii_idents] string of the following
[^non_ascii_idents]: Non-ASCII characters in identifiers are currently feature
gated. This is expected to improve soon.
- The first character has property `XID_start`
- The remaining characters have property `XID_continue`
Either
* The first character has property `XID_start`
* The remaining characters have property `XID_continue`
Or
* The first character is `_`
* The identifier is more than one character, `_` alone is not an identifier
* The remaining characters have property `XID_continue`
that does _not_ occur in the set of [keywords][keywords].