--- a/src/main/kotlin/name/blackcap/passman/Arguments.kt	Sun Jun 30 22:28:52 2024 -0700
+++ b/src/main/kotlin/name/blackcap/passman/Arguments.kt	Tue Jul 02 11:27:39 2024 -0700
@@ -59,12 +59,11 @@
         commandLine = try {
             DefaultParser().parse(options, args)
         } catch (e: ParseException) {
-            die(e.message ?: "syntax error", 2)
-            throw RuntimeException("this will never happen")
+            throw SubcommandException(message = e.message ?: "syntax error", status = 2)
         }
         if (commandLine.hasOption("help")) {
             HelpFormatter().printHelp("$SHORTNAME $name [options] csv_file", options)
-            exitProcess(0)
+            throw SubcommandException(status = 0)
         }
     }
 
@@ -92,11 +91,10 @@
     private fun CommandLine.getCharOptionValue(name: String): Char {
         val optionValue = getOptionValue(name)
         when (optionValue.length) {
-            0 -> die("--$name value must not be empty")
+            0 -> throw SubcommandException(message = "--$name value must not be empty")
             1 -> return optionValue[0]
-            else -> die("--$name value must be a single character")
+            else -> throw SubcommandException(message = "--$name value must be a single character")
         }
-        throw RuntimeException("this will never happen")
     }
 }