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Issue #28572: Add 10% to coverage of IDLE's test_configdialog.

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Update and augment description of the configuration system.
This commit is contained in:
Terry Jan Reedy 2016-11-07 17:15:01 -05:00
parent f5df73025d
commit f46b7823e6
4 changed files with 179 additions and 73 deletions
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23
Lib/idlelib/config.py
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@ -1,13 +1,20 @@
"""Provides access to stored IDLE configuration information.
"""idlelib.config -- Manage IDLE configuration information.
Refer to the comments at the beginning of config-main.def for a description of
the available configuration files and the design implemented to update user
configuration information. In particular, user configuration choices which
duplicate the defaults will be removed from the user's configuration files,
and if a file becomes empty, it will be deleted.
The comments at the beginning of config-main.def describe the
configuration files and the design implemented to update user
configuration information. In particular, user configuration choices
which duplicate the defaults will be removed from the user's
configuration files, and if a user file becomes empty, it will be
deleted.
The contents of the user files may be altered using the Options/Configure IDLE
menu to access the configuration GUI (configdialog.py), or manually.
The configuration database maps options to values. Comceptually, the
database keys are tuples (config-type, section, item). As implemented,
there are separate dicts for default and user values. Each has
config-type keys 'main', 'extensions', 'highlight', and 'keys'. The
value for each key is a ConfigParser instance that maps section and item
to values. For 'main' and 'extenstons', user values override
default values. For 'highlight' and 'keys', user sections augment the
default sections (and must, therefore, have distinct names).
Throughout this module there is an emphasis on returning useable defaults
when a problem occurs in returning a requested configuration value back to