From 1249a2a550c7a297823f6fa81eb3094b01863eab Mon Sep 17 00:00:00 2001
From: Jethro Grassie <jtg@xtrabass.com>
Date: Wed, 16 Aug 2017 09:34:32 -0400
Subject: [PATCH] Construct on first use for completion_commands

---
 contrib/epee/include/readline_buffer.h | 14 +++-----------
 contrib/epee/src/readline_buffer.cpp   | 24 ++++++++++++++++++++----
 2 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/contrib/epee/include/readline_buffer.h b/contrib/epee/include/readline_buffer.h
index 8dd082a7..28a15341 100644
--- a/contrib/epee/include/readline_buffer.h
+++ b/contrib/epee/include/readline_buffer.h
@@ -21,23 +21,15 @@ namespace rdln
     }
     void get_line(std::string& line) const;
     void set_prompt(const std::string& prompt);
-    static void add_completion(const std::string& command)
-    {
-      if(std::find(completion_commands.begin(), completion_commands.end(), command) != completion_commands.end())
-	return;
-      completion_commands.push_back(command);
-    }
-    static const std::vector<std::string>& get_completions()
-    {
-      return completion_commands;
-    }
+    static void add_completion(const std::string& command);
+    static const std::vector<std::string>& get_completions();
     
   protected:
     virtual int sync();
     
   private:
     std::streambuf* m_cout_buf;
-    static std::vector<std::string> completion_commands;
+    static std::vector<std::string>& completion_commands();
   };
   
   class suspend_readline
diff --git a/contrib/epee/src/readline_buffer.cpp b/contrib/epee/src/readline_buffer.cpp
index d4051bcb..42b47405 100644
--- a/contrib/epee/src/readline_buffer.cpp
+++ b/contrib/epee/src/readline_buffer.cpp
@@ -14,10 +14,8 @@ static void remove_line_handler();
 
 static std::string last_line;
 static std::string last_prompt;
-std::mutex line_mutex, sync_mutex, process_mutex;
-std::condition_variable have_line;
-
-std::vector<std::string> rdln::readline_buffer::completion_commands = {"exit"};
+static std::mutex line_mutex, sync_mutex, process_mutex;
+static std::condition_variable have_line;
 
 namespace
 {
@@ -43,6 +41,12 @@ rdln::suspend_readline::~suspend_readline()
     m_buffer->start();
 }
 
+std::vector<std::string>& rdln::readline_buffer::completion_commands()
+{
+  static std::vector<std::string> commands = {"exit"};
+  return commands;
+}
+
 rdln::readline_buffer::readline_buffer()
 : std::stringbuf(), m_cout_buf(NULL)
 {
@@ -88,6 +92,18 @@ void rdln::readline_buffer::set_prompt(const std::string& prompt)
   rl_redisplay();
 }
 
+void rdln::readline_buffer::add_completion(const std::string& command)
+{
+  if(std::find(completion_commands().begin(), completion_commands().end(), command) != completion_commands().end())
+    return;
+  completion_commands().push_back(command);
+}
+
+const std::vector<std::string>& rdln::readline_buffer::get_completions()
+{
+  return completion_commands();
+}
+
 int rdln::readline_buffer::process()
 {
   process_mutex.lock();