incompatible arguments in warning formatting for idle

[gcoffin]

BPO	3698

^{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 = None
closed_at = <Date 2008-09-13.13:39:55.091>
created_at = <Date 2008-08-27.12:29:59.731>
labels = ['expert-IDLE', 'type-crash']
title = 'incompatible arguments in warning formatting for idle'
updated_at = <Date 2008-09-13.13:39:55.090>
user = 'https://bugs.python.org/gcoffin'

bugs.python.org fields:

activity = <Date 2008-09-13.13:39:55.090>
actor = 'gpolo'
assignee = 'none'
closed = True
closed_date = <Date 2008-09-13.13:39:55.091>
closer = 'gpolo'
components = ['IDLE']
creation = <Date 2008-08-27.12:29:59.731>
creator = 'gcoffin'
dependencies = []
files = []
hgrepos = []
issue_num = 3698
keywords = []
message_count = 2.0
messages = ['72023', '73183']
nosy_count = 2.0
nosy_names = ['gpolo', 'gcoffin']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = None
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue3698'
versions = ['Python 2.6']

[gcoffin]

In idle, the function idle_formatwarning_subproc overrides
warnings.formatwarning, however the latter in Python 2.6 is called from
warnings._show_warning with an additional "line" argument:

line 29, in _show_warning
file.write(formatwarning(message, category, filename, lineno, line))

whereas idle_formatwarning_subproc still only accepts 4 arguments. The
optional line argument should be added.

[gpolo]

Duplicate of bpo-3391