prune-dns: rephrase no-op user messaging (style)

prune-dns: rephrase no-op user messaging (style)

Make it more obvious that noop is a no-op. This can be easy to miss if the program is invoked without any arguments. One might naturally expect a bare ‘prune-dns’ to actually prune stuff.

diff --git a/bin/prune-dns b/bin/prune-dns
index d75344a..d154eeb 100755
--- a/bin/prune-dns
+++ b/bin/prune-dns
@@ -71,7 +71,7 @@ if old_records.size == 0
   exit 0
 end
 
-logger.warn "#{old_records.size } records to be removed:"
+logger.warn "#{old_records.size } records can be pruned:"
 old_records.each { |rr| logger.warn rr.short_inspect }
 
 case operation
@@ -81,5 +81,5 @@ when :perform
     pdns.suppress_record(rr)
   end
 else
-  logger.warn 'Not removing any records.'
+  logger.warn "No-op query complete.  Run again with 'perform' to prune records."
 end

GitHub sha: b5a4c71ea6ec8c993302d76ee47971a4c8ea1744

This commit appears in #20 which was merged by saj.