From 87f458d6638c88db6ddbeaf002c9cea42ba46f2b Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Bayle <j2b.bayle@gmail.com>
Date: Wed, 29 May 2019 14:51:46 +0200
Subject: [PATCH] Add function to disable implicit value

---
 include/cxxopts.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/cxxopts.hpp b/include/cxxopts.hpp
index 63d6336..71a2afb 100644
--- a/include/cxxopts.hpp
+++ b/include/cxxopts.hpp
@@ -309,6 +309,9 @@ namespace cxxopts
     virtual std::shared_ptr<Value>
     implicit_value(const std::string& value) = 0;
 
+    virtual std::shared_ptr<Value>
+    no_implicit_value() = 0;
+
     virtual bool
     is_boolean() const = 0;
   };
@@ -825,6 +828,13 @@ namespace cxxopts
         return shared_from_this();
       }
 
+      std::shared_ptr<Value>
+      no_implicit_value()
+      {
+        m_implicit = false;
+        return shared_from_this();
+      }
+
       std::string
       get_default_value() const
       {