use defaults instead of test

main.sh

@@ -10,15 +10,15 @@ then
 	warning="$(tput setaf 3)$bold"
 	error="$(tput setab 1)$bold"
 	reset=$(tput sgr0)
-else
-	inverse=""
-	bold="[["
-	success="[["
-	info="[["
-	warning="[["
-	error="[["
-	reset="]]"
 fi
+# Ensure text styling, if tput could not work
+inverse=${inverse:-[[}
+bold=${bold:-[[}
+success=${success:-[[}
+info=${info:-[[}
+warning=${warning:-[[}
+error=${error:-[[}
+reset=${reset:-]]}
 
 export BOG_TITLE_PRINTED=0