[issue24817] disable format menu items when not applicable

[Mark Roseman]

New submission from Mark Roseman:

In an editor window, with no selection, most of the items in the format menu (indent, tabify, etc.) aren't applicable, so the corresponding menu items should be disabled.

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components: IDLE
messages: 248171
nosy: kbk, markroseman, roger.serwy, terry.reedy
priority: normal
severity: normal
status: open
title: disable format menu items when not applicable
type: behavior
versions: Python 2.7, Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24817>
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