0dbf03871f
This new converter is similar to the concat converter and can be used to build new variables made of a succession of other variables but the main difference is that it does the checks if adding a delimiter makes sense as wouldn't be the case if e.g the current input sample is empty. That situation would require 2 separate rules using concat converter where the first rule would have to check if the current sample string is empty before adding a delimiter. This resolves GitHub Issue #1621.