Cleanup string to allow string after formatted output

Author: mborland

include/boost/int128/fmt_format.hpp

@@ -269,6 +269,9 @@ struct formatter
                 // LCOV_EXCL_STOP
         }
 
+        s.erase(0, s.find_first_not_of('\0'));
+        s.erase(s.find_last_not_of('\0') + 1);
+
         return fmt::format_to(ctx.out(), "{}", s);
     }
 };

include/boost/int128/format.hpp

@@ -273,6 +273,9 @@ struct formatter<T>
             // LCOV_EXCL_STOP
         }
 
+        s.erase(0, s.find_first_not_of('\0'));
+        s.erase(s.find_last_not_of('\0') + 1);
+
         return std::format_to(ctx.out(), "{}", s);
     }
 };

test/test_fmt_format.cpp

@@ -128,6 +128,9 @@ void test_string_insertion()
 {
     BOOST_TEST_CSTR_EQ(fmt::format("Height is: {:d}", T {0}).c_str(), "Height is: 0");
     BOOST_TEST_CSTR_EQ(fmt::format("Height is: {}", T {2}).c_str(), "Height is: 2");
+
+    BOOST_TEST_CSTR_EQ(fmt::format("Height is: {:d} meters", T {0}).c_str(), "Height is: 0 meters");
+    BOOST_TEST_CSTR_EQ(fmt::format("Height is: {} meters", T {2}).c_str(), "Height is: 2 meters");
 }
 
 int main()

test/test_format.cpp

@@ -119,6 +119,9 @@ void test_string_insertion()
 {
     BOOST_TEST_CSTR_EQ(std::format("Height is: {:d}", T {0}).c_str(), "Height is: 0");
     BOOST_TEST_CSTR_EQ(std::format("Height is: {}", T {2}).c_str(), "Height is: 2");
+
+    BOOST_TEST_CSTR_EQ(std::format("Height is: {:d} meters", T {0}).c_str(), "Height is: 0 meters");
+    BOOST_TEST_CSTR_EQ(std::format("Height is: {} meters", T {2}).c_str(), "Height is: 2 meters");
 }
 
 int main()