quote env if it contains whitespace

utils.go

@@ -503,6 +503,10 @@ func parseFlagSection(section any, makepkgConf, march string) (string, error) {
 			if len(orgMatch) == 0 {
 				// no match found, assume env var and append it
 				log.Debugf("no match found for %s:%v, appending", subSec, subMap)
+				if strings.Contains(subMap.(string), " ") {
+					makepkgConf += fmt.Sprintf("\nexport %s=%q", strings.ToUpper(subSec.(string)), replaceStringsFromMap(subMap.(string), replaceMap))
+					continue
+				}
 				makepkgConf += fmt.Sprintf("\nexport %s=%s", strings.ToUpper(subSec.(string)), replaceStringsFromMap(subMap.(string), replaceMap))
 				continue
 			}