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F2 build 0. Brand new install; brand new workspace 1. Add the following line to the file <install>/eclipse/plugins/org.eclipse.platform_2.0.0/plugin_customization.ini org.eclipse.update.ui/org.eclipse.update.ui.historySize=20 2. Start eclipse 3. Open the preferences page Observe: the maximum number of history configurations is 5. Expectation: it should be 20. 4. Hit Restore Defaults Observe: the maximum number of history configurations is still 5. Expectation: it should be 20.
The problem is in the way the update UI handles the defaulting of preference values. Currently, MainPreferencePage.initializeDefaults(IPreferenceStore store) is being called (4 places) from within MainPreferencePage; this sets (or resets) the default values each time it is called. The recommended way to establish default preferences is by overriding Plugin.initializeDefaultPluginPreferences() in UpdateUIPlugin. This ensures that default overrides can be furnished either by the primary feature (plugin_customization.ini) or via the command line (- plugincustomization parameter). The method will be called automatically (and extactly once) when the plug-in's preference store is first requested.
applied patch supplied by Konrad. released into HEAD. [note: there still seems to be a problem in update.core actually not honoring the setting, histories seem to be trimmed to 5 even if the setting is >5] Marking this defect as fixed, keeping bug 19301 open.
