Whenever I run Eclipse, it suddenly deactivates some completions tags (but not all) with no reason. This happens always during, when I write some code. At the start of Eclipse, everything is okay but after a while this problem occurs. Every time I solve this by resetting the preferences and restarting Eclipse. But it takes too much time and annoys me. Is there a special Hot-Key to (de)activate some completions tags?
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**completions tags** - you mean html tag completion? – Subhrajyoti Majumder Feb 06 '13 at 09:56
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I would bet on a plugin malfunction. Try to reinstall Eclipse from scratch without any custom plugins, and add only what you need, then add them one by one until you run into this problem.
Alternatively, open Eclipse->preferences->install/update->unintsall or update (link)->configuration->view error log and see if you get any exceptions on any plugins, if you identify something fishy, uninstall that plugin.
TheZuck
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To confirm this, check the `.log` file in your local workspace. There are probably exception messages from the plugins. – Duncan Jones Feb 06 '13 at 10:14
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I inspected the error log and it seems, that there is alway an ArrayOutOfBoundsException. The whole log for this specific happening is about 150 rows long, so copy+paste makes no sense ;) The packages are: org.eclipse.e4.core.internal.di org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher org.eclipse.swt.widgets.Widget – user2046298 Feb 07 '13 at 10:23
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1. try to reinstall eclipse as in step (1), 2. try to clean your project, it's a long shot, but sometimes the project files are messed up and it affect eclipse. oh and 3. make sure you don't have any weird characters in one of your files (or does it also happen when you start a new project?) – TheZuck Feb 07 '13 at 12:57
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In my case the Eclipse Preferences named Type Filters (under Java | Appearance) seemed to cause that experience. We had excluded all common root package names (com., org., sun.), but also java. and javax.*. After deaktivating those entries in the "Filter list" Eclipse's Ctrl-Space again provides the missed proposals.
Axel
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