Description

assignee = None
closed_at = <Date 2015-01-22.16:06:52.188>
created_at = <Date 2015-01-22.15:58:05.320>
labels = ['type-bug', 'library']
title = 'ConfigParser does not handle square brackets in section name'
updated_at = <Date 2015-01-22.16:06:52.186>
user = 'https://github.com/xflr6'

activity = <Date 2015-01-22.16:06:52.186>
actor = 'r.david.murray'
assignee = 'none'
closed = True
closed_date = <Date 2015-01-22.16:06:52.188>
closer = 'r.david.murray'
components = ['Library (Lib)']
creation = <Date 2015-01-22.15:58:05.320>
creator = 'xflr6'
dependencies = []
files = []
hgrepos = []
issue_num = 23301
keywords = []
message_count = 2.0
messages = ['234497', '234498']
nosy_count = 2.0
nosy_names = ['r.david.murray', 'xflr6']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '20923'
type = 'behavior'
url = 'https://bugs.python.org/issue23301'
versions = ['Python 2.7', 'Python 3.4']

Activity

1. xflr6 commented on Jan 22, 2015

   

   xflr6mannequin

   on Jan 22, 2015

   MannequinAuthor

   More actions

   ConfigParser parses section lines containing square brackets like '[spam [eggs] spam]' up to the first instead of the last occurrence of ']' preventing roundtrips:

   >> s = StringIO()
   >> c1 = ConfigParser()
   >> c1.add_section('spam [eggs]')
   >> c1.write(s)
   >> s.seek(0)
   >> c2 = ConfigParser()
   >> c2.readfp(s)
   >> assert c1.sections() == c2.sections() # fails

   Potential fix: change the second line of SECTCRE from r'(?P<header>[^]]+)' to r'(?P<header>.+?)'.

   If the parsing behaviour cannot be changed, the user should at least be warned about supplying data that breaks the roundtrip.
2. xflr6

   added

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Jan 22, 2015
3. bitdancer commented on Jan 22, 2015

   

   bitdancer

   on Jan 22, 2015

   Member

   More actions

   This is a duplicate of bpo-20923 (#65122), which was rejected. To argue against the rejection you probably need to provide evidence that this is something that is actually supported by other common ini parsers. And that evidence should be posted to bpo-20923.
4. bitdancer

   closed this as completedon Jan 22, 2015
5. ezio-melotti

   transferred this issue fromon Apr 10, 2022

Issue actions