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Merged
bors merged 2 commits into from
Jun 28, 2016
Merged

update reference for #29734 #34287

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523dbfc
update reference for #29734
durka Jun 15, 2016
b54afbe
include list of characters
durka Jun 15, 2016
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18 changes: 13 additions & 5 deletions src/doc/reference.md
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Expand Up @@ -114,12 +114,20 @@ Non-doc comments are interpreted as a form of whitespace.

## Whitespace

Whitespace is any non-empty string containing only the following characters:

Whitespace is any non-empty string containing only characters that have the
`Pattern_White_Space` Unicode property, namely:

- `U+0009` (horizontal tab, `'\t'`)
- `U+000A` (line feed, `'\n'`)
- `U+000B` (vertical tab)
- `U+000C` (form feed)
- `U+000D` (carriage return, `'\r'`)
- `U+0020` (space, `' '`)
- `U+0009` (tab, `'\t'`)
- `U+000A` (LF, `'\n'`)
- `U+000D` (CR, `'\r'`)
- `U+0085` (next line)
- `U+200E` (left-to-right mark)
- `U+200F` (right-to-left mark)
- `U+2028` (line separator)
- `U+2029` (paragraph separator)

Rust is a "free-form" language, meaning that all forms of whitespace serve only
to separate _tokens_ in the grammar, and have no semantic significance.
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