From 10c6c59a26f2c2ffec81aeadeac079aeac0e32cf Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Sun, 18 Feb 2018 14:48:24 +1100
Subject: [PATCH] Buffer: avoid expensive option flattening in on_registred
 with NoHooks

---
 src/buffer.cc | 6 ++++++
 src/main.cc   | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/buffer.cc b/src/buffer.cc
index 22f4a794..2de29b97 100644
--- a/src/buffer.cc
+++ b/src/buffer.cc
@@ -107,6 +107,12 @@ void Buffer::on_registered()
 
     options().register_watcher(*this);
 
+    if (m_flags & Buffer::Flags::NoHooks)
+    {
+        on_option_changed(options()["readonly"]);
+        return;
+    }
+
     run_hook_in_own_context("BufCreate", m_name);
 
     if (m_flags & Flags::File)
diff --git a/src/main.cc b/src/main.cc
index 555f5eba..088f9c0f 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -772,7 +772,7 @@ int run_filter(StringView keystr, StringView commands, ConstArrayView<StringView
 
         for (auto& file : files)
         {
-            Buffer* buffer = open_file_buffer(file);
+            Buffer* buffer = open_file_buffer(file, Buffer::Flags::NoHooks);
             if (not suffix_backup.empty())
                 write_buffer_to_file(*buffer, buffer->name() + suffix_backup);
             apply_to_buffer(*buffer);
@@ -782,7 +782,7 @@ int run_filter(StringView keystr, StringView commands, ConstArrayView<StringView
         if (not isatty(0))
         {
             Buffer& buffer = *buffer_manager.create_buffer(
-                "*stdin*", Buffer::Flags::None, read_fd(0), InvalidTime);
+                "*stdin*", Buffer::Flags::NoHooks, read_fd(0), InvalidTime);
             apply_to_buffer(buffer);
             write_buffer_to_fd(buffer, 1);
             buffer_manager.delete_buffer(buffer);