Add saturnin__bug() to help developers help users report bugs

src/saturnin.sh

@@ -67,6 +67,25 @@ SATURNIN_LIBEXEC="${SATURNIN_LIBEXEC:-}"
 SATURNIN_LIBEXEC_PREFIX="${SATURNIN_LIBEXEC_PREFIX:-}"
 
 
+saturnin__bug() {
+    #
+    # Warn about bug in your software
+    #
+    # Issue warning using warn() from pretty but also add application
+    # version.  This is useful when an assertion in your application
+    # fails such that it is certain that there is a bug inside it.
+    #
+    # In such cases, it makes sense to print also version information
+    # to help users with reporting.
+    #
+    local msg
+    for msg in "$@";
+    do
+        warn "bug: $msg"
+    done
+    warn "bug in $(basename "$0") version: $SATURNIN_APP_VERSION"
+}
+
 saturnin__conf() {
     #
     # inigrep smart loader