CLI: hide stacktraces for exceptions w/o messages when logging errors --------------------------------------------------------------------- Key: WFLY-3101 URL: https://issues.jboss.org/browse/WFLY-3101 Project: WildFly Issue Type: Task Components: CLI Affects Versions: 8.0.0.Final Reporter: Alexey Loubyansky Assignee: Alexey Loubyansky Fix For: 8.1.0.CR1, 8.1.0.Final CommandContextImpl contains the following logic public void handleSafe(String line) { exitCode = 0; try { handle(line); } catch(Throwable t) { final StringBuilder buf = new StringBuilder(); buf.append(t.getLocalizedMessage()); Throwable t1 = t.getCause(); while(t1 != null) { if(t1.getLocalizedMessage() != null) { buf.append(": ").append(t1.getLocalizedMessage()); } else { t1.printStackTrace(); } t1 = t1.getCause(); } error(buf.toString()); } } When an exception does not contain any message, e.g. in some cases IllegalArgumentException, etc, the full stacktraces are logged that are useful for debugging but not nice from the user interface point of view. It was suggested to hide them.