From 3ef9895a97dab74628577d867a651ede4386af7e Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Tue, 31 Jan 2012 14:03:10 +0000
Subject: [PATCH] Buffer: support creation of temporary windows to apply
 commands when no windows are in context

---
 src/buffer.cc | 5 +++++
 src/buffer.hh | 2 ++
 src/main.cc   | 8 +++++++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/buffer.cc b/src/buffer.cc
index d5cb762c..f7f7ff55 100644
--- a/src/buffer.cc
+++ b/src/buffer.cc
@@ -243,6 +243,11 @@ void Buffer::delete_window(Window* window)
     m_windows.erase(window_it);
 }
 
+std::unique_ptr<Window> Buffer::create_temporary_window()
+{
+    return std::unique_ptr<Window>(new Window(*this));
+}
+
 bool Buffer::is_modified() const
 {
     size_t history_cursor_index = m_history_cursor - m_history.begin();
diff --git a/src/buffer.hh b/src/buffer.hh
index 7b010c9b..d9649cbb 100644
--- a/src/buffer.hh
+++ b/src/buffer.hh
@@ -151,6 +151,8 @@ public:
     Window* get_or_create_window();
     void delete_window(Window* window);
 
+    std::unique_ptr<Window> create_temporary_window();
+
     bool is_modified() const;
     Type type() const { return m_type; }
     void notify_saved();
diff --git a/src/main.cc b/src/main.cc
index d1a0ae85..686dec64 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -1048,6 +1048,12 @@ void exec_string(const CommandParameters& params,
         return keys[pos++];
     };
 
+    std::unique_ptr<Window> temp_window;
+    if (not context.has_window())
+       temp_window = context.buffer().create_temporary_window();
+
+    Window& window = context.has_window() ? context.window() : *temp_window;
+
     int count = 0;
     while(pos < keys.size())
     {
@@ -1059,7 +1065,7 @@ void exec_string(const CommandParameters& params,
         {
             auto it = keymap.find(key);
             if (it != keymap.end())
-                it->second(context.window(), count);
+                it->second(window, count);
             count = 0;
         }
     }