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docs: document accepted range whitespace #895

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11 changes: 6 additions & 5 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -389,22 +389,24 @@ for the benefit of parser authors:

```bnf
range-set ::= range ( logical-or range ) *
logical-or ::= ( ' ' ) * '||' ( ' ' ) *
range ::= hyphen | simple ( ' ' simple ) * | ''
logical-or ::= wsp '||' wsp
range ::= hyphen | simple ( wsp1 simple ) * | ''
hyphen ::= partial ' - ' partial
simple ::= primitive | partial | tilde | caret
primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
partial ::= wsp xr ( '.' xr ( '.' xr qualifier ? )? )?
xr ::= 'x' | 'X' | '*' | nr
nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) *
tilde ::= '~' partial
tilde ::= '~' wsp ( '>' ) ? partial
caret ::= '^' partial
qualifier ::= ( '-' pre )? ( '+' build )?
pre ::= prepart ( '.' prepart ) *
prepart ::= nr | alphanumid
build ::= buildid ( '.' buildid ) *
alphanumid ::= ( ['0'-'9'] ) * [-A-Za-z] [-0-9A-Za-z] *
buildid ::= [-0-9A-Za-z]+
wsp ::= ( ' ' ) *
wsp1 ::= ' ' wsp
```

Note: Prerelease identifiers (`pre`) use `nr` for numeric parts, which
Expand Down Expand Up @@ -677,4 +679,3 @@ The following modules are available:
* `require('semver/ranges/subset')`
* `require('semver/ranges/to-comparators')`
* `require('semver/ranges/valid')`

10 changes: 6 additions & 4 deletions range.bnf
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Original file line number Diff line number Diff line change
@@ -1,17 +1,19 @@
range-set ::= range ( logical-or range ) *
logical-or ::= ( ' ' ) * '||' ( ' ' ) *
range ::= hyphen | simple ( ' ' simple ) * | ''
logical-or ::= wsp '||' wsp
range ::= hyphen | simple ( wsp1 simple ) * | ''
hyphen ::= partial ' - ' partial
simple ::= primitive | partial | tilde | caret
primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
partial ::= wsp xr ( '.' xr ( '.' xr qualifier ? )? )?
xr ::= 'x' | 'X' | '*' | nr
nr ::= '0' | [1-9] ( [0-9] ) *
tilde ::= '~' partial
tilde ::= '~' wsp ( '>' ) ? partial
caret ::= '^' partial
qualifier ::= ( '-' pre )? ( '+' build )?
pre ::= prepart ( '.' prepart ) *
prepart ::= nr | alphanumid
build ::= buildid ( '.' buildid ) *
alphanumid ::= ( [0-9] ) * [A-Za-z-] [-0-9A-Za-z] *
buildid ::= [-0-9A-Za-z]+
wsp ::= ( ' ' ) *
wsp1 ::= ' ' wsp