Trailing spaces in pretty-printed JSON

[leoliu]

BPO	16476
Nosy	@ezio-melotti
Superseder	bpo-16333: Trailing whitespace in json dump when using indent

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ezio-melotti'
closed_at = <Date 2012-11-29.00:35:48.093>
created_at = <Date 2012-11-15.11:15:36.471>
labels = ['type-bug', 'library']
title = 'Trailing spaces in pretty-printed JSON'
updated_at = <Date 2012-11-29.00:35:48.092>
user = 'https://bugs.python.org/leoliu'

bugs.python.org fields:

activity = <Date 2012-11-29.00:35:48.092>
actor = 'ezio.melotti'
assignee = 'ezio.melotti'
closed = True
closed_date = <Date 2012-11-29.00:35:48.093>
closer = 'ezio.melotti'
components = ['Library (Lib)']
creation = <Date 2012-11-15.11:15:36.471>
creator = 'leoliu'
dependencies = []
files = []
hgrepos = []
issue_num = 16476
keywords = []
message_count = 4.0
messages = ['175607', '175608', '176593', '176595']
nosy_count = 3.0
nosy_names = ['ezio.melotti', 'python-dev', 'leoliu']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = '16333'
type = 'behavior'
url = 'https://bugs.python.org/issue16476'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3', 'Python 3.4']

[leoliu]

python -mjson.tool some_file.json > x.json

x.json will have trailing white spaces.

Also reported here: http://thread.gmane.org/gmane.comp.python.devel/135311

[ezio-melotti]

This is a duplicate of bpo-16333.

[python-dev]

New changeset fa277ab588de by Ezio Melotti in branch '2.7':
bpo-16476: Fix json.tool to avoid including trailing whitespace.
http://hg.python.org/cpython/rev/fa277ab588de

New changeset 6996a53f13ce by Ezio Melotti in branch '3.2':
bpo-16476: Fix json.tool to avoid including trailing whitespace.
http://hg.python.org/cpython/rev/6996a53f13ce

New changeset 73a7e6ecd0e1 by Ezio Melotti in branch '3.3':
bpo-16476: merge with 3.2.
http://hg.python.org/cpython/rev/73a7e6ecd0e1

New changeset c062ef6e4c3e by Ezio Melotti in branch 'default':
bpo-16476: null merge with 3.3.
http://hg.python.org/cpython/rev/c062ef6e4c3e

[ezio-melotti]

I fixed this separately from bpo-16333.
In the "default" branch this got fixed by bpo-16333 already.
Thanks for the report!