Bug 113159 CUEditor won't let me insert just one TAB
Given the following code: Pattern pattern = selected ? new Pattern(null,...) : new Pattern(nul,...); <<CARET>>g.setBackgroundPattern(pattern); I cannot insert a single TAB at the Caret location. typing TAB inserts two TABs. BACKSPACE deletes both.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/actions/IndentAction.java
tab= buf.toString();
		} else
			tab= "\t"; 
	
		return tab;
	}
	
	/**
	 * Returns the tab size used by the java editor, which is deduced from the
	 * formatter preferences.
	 * 
	 * @return the tab size as defined in the current formatter preferences
	 */
	private int getTabSize() {
		return getCoreFormatterOption(DefaultCodeFormatterConstants.FORMATTER_TAB_SIZE, 4);
	}
	
	/**
	 * Returns the possibly project-specific core preference defined under <code>key</code>.
	 * 
	 * @param key the key of the preference
	 * @return the value of the preference
	 * @since 3.1
	 */
	private String getCoreFormatterOption(String key) {
		IJavaProject project= getJavaProject();
		if (project == null)
			return JavaCore.getOption(key);
		return project.getOption(key, true);
	}