[issue30128] xid_start definition for Unicode identifiers refers to xid_continue

[Xiang Zhang]

Xiang Zhang added the comment:

Quoting from PEP3131:

XID_Start then closes this set under normalization, by removing all characters 
whose NFKC normalization is not of the form ID_Start ID_Continue* anymore.

--
nosy: +loewis, xiang.zhang

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[issue30128] xid_start definition for Unicode identifiers refers to xid_continue

[Ralph Corderoy]

New submission from Ralph Corderoy:

https://docs.python.org/3/reference/lexical_analysis.html#identifiers has a 
grammar.

identifier   ::=  xid_start xid_continue*
id_start ::=  
id_continue  ::=  
xid_start::=  
xid_continue ::=  

I struggle to make sense of it unless I remove `xid_continue*' from 
`xid_start's definition.
I suspect it ended up there due to cut and paste.

--
assignee: docs@python
components: Documentation
messages: 292049
nosy: docs@python, ralph.corderoy
priority: normal
severity: normal
status: open
title: xid_start definition for Unicode identifiers refers to xid_continue
versions: Python 3.6

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