Bug 262022 [FieldAssist] ContentProposalAdapter.recomputeProposals might throw a NPE
When a control using content proposal gets disposed during usage the recomputeProposals() method might throw a NPE. This is caused by getting "allProposals" using a call to getProposals() which is allowed to return null. When using allProposals.length this will crash. I'm not sure if the simple solution if ((allProposals == null) || (allProposals.length == 0) { proposals = new IContentProposal[0]; close(); } else { // cont. will work or if the popup will have problems with a disposed control.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
.getModifierKeys() & e.stateMask) == triggerKeyStroke
										.getModifierKeys()))) {
							
							
							e.doit = false;
							openProposalPopup(false);
							return;
						}
					}
					/*
					 * The triggering keystroke was not invoked. If a character
					 * was typed, compare it to the autoactivation characters.
					 */
					if (e.character != 0) {
						if (autoActivateString != null) {
							if (autoActivateString.indexOf(e.character) >= 0) {
								autoActivate();
							} else {
								
								
								
								
								receivedKeyDown = true;
								
								
								
								watchModify = true;
							}
						} else {