SpringSource/spring-xd — pull request #215 by markfisher (2013-08-11 19:57:18+00:00)
Title: XD-664 file has .out suffix by default

.out is the default, but I also expose a configurable "suffix" parameter

the only possible quirk is that if an empty string were passed, there would still be a dot at the end of the file name

if we want to allow no suffix at all, then we probably need to modify the SpEL expression to be a bit more sophisticated with ternary logic checking for the empty suffix