[issue38636] IDLE regression: toggle tabs and change indent width functions

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

Both the menu items and the short cuts for these two functions on the Format menu give these call errors.  They are only visible if IDLE is started from a console.

They work in 3.6; the regression is due to #36390.  These 2 functions were moved separately from the others in the 3rd PR, PR 14827, changeset 1b3892243433da7eae7f5f3a4f98f13d309c8926.  I found the mistake and believe I have one possible version of a working fix on a new branch.

The diff contains this comment:
  # With mixed indents not allowed, these are semi-useless and not unittested.
I was thinking that they should be removed, but regardless, they should have been manually tested.  However, in one test with 3.6, a mixed indent -- tab + 4 spaces following a 4 space tab -- did work, so I am not sure of the rule.  I will try to add a unittest along with the fix.

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components:  -Windows
nosy:  -paul.moore, steve.dower, tim.golden, zach.ware
stage:  -> test needed
title: "Alt + T" and "Alt + U" Broken in IDLE on Windows -> IDLE regression: toggle tabs and change indent width functions
versions: +Python 3.7, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38636>
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