From 13e4f40ec3e1535f46c2f3293981042af1e2776f Mon Sep 17 00:00:00 2001
From: "Taylor C. Richberger" <Taywee@gmx.com>
Date: Thu, 2 Jun 2016 17:08:56 -0600
Subject: allow set use

---
 Doxyfile |  2 +-
 args.hxx | 10 ++++++----
 test.cxx | 19 +++++++++++++++++++
 3 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/Doxyfile b/Doxyfile
index 11391a7..51becfa 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "args"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.1.4
+PROJECT_NUMBER         = 4.1.5
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/args.hxx b/args.hxx
index e0d6f54..dcfa235 100644
--- a/args.hxx
+++ b/args.hxx
@@ -1435,8 +1435,9 @@ namespace args
 
             virtual void ParseValue(const std::string &value) override
             {
-                values.emplace_back();
-                Reader(name, value, values.back());
+                T v;
+                Reader(name, value, v);
+                values.insert(std::end(values), v);
             }
 
             /** Get the values
@@ -1610,8 +1611,9 @@ namespace args
 
             virtual void ParseValue(const std::string &value) override
             {
-                values.emplace_back();
-                Reader(name, value, values.back());
+                T v;
+                Reader(name, value, v);
+                values.insert(std::end(values), v);
                 matched = true;
             }
 
diff --git a/test.cxx b/test.cxx
index 7822821..b4c451b 100644
--- a/test.cxx
+++ b/test.cxx
@@ -137,6 +137,16 @@ TEST_CASE("Argument flag lists work as expected", "[args]")
     REQUIRE((args::get(foo) == std::vector<int>{7, 2, 9, 42}));
 }
 
+#include <unordered_set>
+
+TEST_CASE("Argument flag lists work with sets", "[args]")
+{
+    args::ArgumentParser parser("This is a test program.", "This goes after the options.");
+    args::ValueFlagList<std::string, std::unordered_set<std::string>> foo(parser, "FOO", "test flag", {'f', "foo"});
+    parser.ParseArgs(std::vector<std::string>{"--foo=7", "-fblah", "-f", "9", "--foo", "blah"});
+    REQUIRE((args::get(foo) == std::unordered_set<std::string>{"7", "9", "blah"}));
+}
+
 TEST_CASE("Positional arguments and positional argument lists work as expected", "[args]")
 {
     args::ArgumentParser parser("This is a test program.", "This goes after the options.");
@@ -152,6 +162,15 @@ TEST_CASE("Positional arguments and positional argument lists work as expected",
     REQUIRE((args::get(baz) == std::vector<char>{'a', 'b', 'c', 'x', 'y', 'z'}));
 }
 
+TEST_CASE("Positional lists work with sets", "[args]")
+{
+    args::ArgumentParser parser("This is a test program.", "This goes after the options.");
+    args::PositionalList<std::string, std::unordered_set<std::string>> foo(parser, "FOO", "test positional");
+    parser.ParseArgs(std::vector<std::string>{"foo", "FoO", "bar", "baz", "foo", "9", "baz"});
+    REQUIRE((args::get(foo) == std::unordered_set<std::string>{"foo", "FoO", "bar", "baz", "9"}));
+}
+
+
 TEST_CASE("Positionals that are unspecified evaluate false", "[args]")
 {
     args::ArgumentParser parser("This is a test program.", "This goes after the options.");
-- 
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