From 2c8b3306541cdc86fcad899ea8957099453c6721 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Jan 27 2024 22:20:31 +0000
Subject: argv.h: argv_scan(): properly handle (fhybrid && ARGV_OPTARG_OPTIONAL).


---

diff --git a/src/internal/argv/argv.h b/src/internal/argv/argv.h
index 4cb6b6a..c96cfc5 100644
--- a/src/internal/argv/argv.h
+++ b/src/internal/argv/argv.h
@@ -438,7 +438,12 @@ static void argv_scan(
 					ch   = val;
 
 				} else if (fhybrid && !val[0] && !(option->flags & ARGV_OPTION_HYBRID_SPACE)) {
-					ferr = ARGV_ERROR_HYBRID_SPACE;
+					if (option->optarg == ARGV_OPTARG_OPTIONAL) {
+						fval = false;
+
+					} else {
+						ferr = ARGV_ERROR_HYBRID_SPACE;
+					}
 
 				} else if (fhybrid && (val[0]=='=') && !(option->flags & ARGV_OPTION_HYBRID_EQUAL)) {
 					ferr = ARGV_ERROR_HYBRID_EQUAL;