clinic.py --converters fails

[serhiy-storchaka]

BPO	21629
Nosy	@larryhastings, @serhiy-storchaka

^{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/larryhastings'
closed_at = <Date 2014-06-11.11:35:53.782>
created_at = <Date 2014-06-01.17:50:52.551>
labels = ['type-bug']
title = 'clinic.py --converters fails'
updated_at = <Date 2014-06-11.11:35:53.781>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2014-06-11.11:35:53.781>
actor = 'larry'
assignee = 'larry'
closed = True
closed_date = <Date 2014-06-11.11:35:53.782>
closer = 'larry'
components = ['Demos and Tools']
creation = <Date 2014-06-01.17:50:52.551>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 21629
keywords = []
message_count = 4.0
messages = ['219512', '220251', '220255', '220257']
nosy_count = 3.0
nosy_names = ['larry', 'python-dev', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue21629'
versions = ['Python 3.4', 'Python 3.5']

[serhiy-storchaka]

$ ./python Tools/clinic/clinic.py --converters

Legacy converters:
Traceback (most recent call last):
  File "Tools/clinic/clinic.py", line 4199, in <module>
    sys.exit(main(sys.argv[1:]))
  File "Tools/clinic/clinic.py", line 4131, in main
    print('    ' + ' '.join(c for c in legacy if c[0].isupper()))
  File "Tools/clinic/clinic.py", line 4131, in <genexpr>
    print('    ' + ' '.join(c for c in legacy if c[0].isupper()))
IndexError: string index out of range

As I see, the problem is in the self converter which has empty format_unit.

[larryhastings]

Confirmed.

[python-dev]

New changeset 6b2db7fc17f7 by Larry Hastings in branch '3.4':
Issue bpo-21629: Fix Argument Clinic's "--converters" feature.
http://hg.python.org/cpython/rev/6b2db7fc17f7

[python-dev]

New changeset 8b4b8f5d7321 by Larry Hastings in branch 'default':
Issue bpo-21629: Merge from 3.4.
http://hg.python.org/cpython/rev/8b4b8f5d7321