make operations mutually exclusive

.vscode/numbered-bookmarks.json

@@ -4,7 +4,7 @@
 			"fsPath": "$ROOTPATH$/borghelper.sh",
 			"bookmarks": [
 				-1,
-				257,
+				253,
 				151,
 				-1,
 				-1,

borghelper.sh

@@ -246,17 +246,13 @@ export TMPDIR="${borgBaseDir}/tmp"
 # info operations
 if [ "$operation" = 'info' ]; then
     borg info ::"${archiveName}"
-fi
-
 # list operations
-if [ "$operation" = 'listall' ]; then
+elif [ "$operation" = 'listall' ]; then
     borg list
 elif [ "$operation" = 'viewarchive' ]; then
     borg list ::"${archiveName}"
-fi
-
 # restore operations
-if [ "$operation" = 'restore' ]; then
+elif [ "$operation" = 'restore' ]; then
     if [ -z "$fileName" ]; then
         # restore entire archive
         cd "$restorePath" || consoleError 4 'Could not change to restore directory.'