From aef670bd436d85979949f335f510e9817222856b Mon Sep 17 00:00:00 2001
From: Joseph Durel <jadematrix.art@gmail.com>
Date: Sat, 11 Jul 2020 10:12:57 -0400
Subject: [PATCH] Make ArgumentParser::add_*() functions working on the parser
 itself chainable

---
 include/argparse/argparse.hpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/include/argparse/argparse.hpp b/include/argparse/argparse.hpp
index e305459..bf6425e 100644
--- a/include/argparse/argparse.hpp
+++ b/include/argparse/argparse.hpp
@@ -798,7 +798,8 @@ public:
 
   // Parameter packed add_parents method
   // Accepts a variadic number of ArgumentParser objects
-  template <typename... Targs> void add_parents(const Targs &... Fargs) {
+  template <typename... Targs>
+  ArgumentParser &add_parents(const Targs &... Fargs) {
     for (const ArgumentParser &tParentParser : {std::ref(Fargs)...}) {
       for (auto &tArgument : tParentParser.mPositionalArguments) {
         auto it =
@@ -811,14 +812,17 @@ public:
         index_argument(it);
       }
     }
+    return *this;
   }
 
-  void add_description(std::string aDescription) {
+  ArgumentParser &add_description(std::string aDescription) {
     mDescription = std::move(aDescription);
+    return *this;
   }
 
-  void add_epilog(std::string aEpilog) {
+  ArgumentParser &add_epilog(std::string aEpilog) {
     mEpilog = std::move(aEpilog);
+    return *this;
   }
 
   /* Call parse_args_internal - which does all the work