Add some ad-hoc Awk filtering to the output

It may be possible to accomplish some/all of this with Nmap or Ndiff
features, but I can't see how just yet.

1 files changed, 14 insertions, 1 deletions

diff --git a/nwatch b/nwatch
index 32a7afe..c981fbc 100755
--- a/nwatch
+++ b/nwatch
@@ -71,5 +71,18 @@ done
 
 # Write diff to stdout if it exists (not an error if it doesn't)
 if [[ -r $diff ]] ; then
-    cat -- "$diff"
+    awk '/^[-+]Not shown: / { next }
+/^[-+]/ { diff = 1 }
+NF { lines[++l] = $0 }
+function write() {
+    if (diff) {
+        for (l in lines)
+            print lines[l]
+        print ""
+    }
+    diff = l = 0
+}
+!NF { write() }
+END { write() }
+' -- "$diff"
 fi