From be24c6ab4d802143fa9295a276777d50208af780 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Thu, 18 Apr 2019 14:17:22 +0300
Subject: [PATCH] Fix an issue when invalid "env_default" results into
 unhandled errors // Resolve #2265

---
 HISTORY.rst                 | 4 ++++
 platformio/commands/init.py | 8 +++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/HISTORY.rst b/HISTORY.rst
index a6543f30..d34f4555 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -8,6 +8,10 @@ PlatformIO 3.0
 ~~~~~~~~~~~~~~~~~~
 
 * Project Generator: fixed a VSCode C/C++'s "Cannot find" warning when CPPPATH folder does not exist
+* Fixed an "IndexError: list index out of range" for Arduino sketch preprocessor
+  (`issue #2268 <https://github.com/platformio/platformio-core/issues/2268>`_)
+* Fixed an issue when invalid "env_default" in `"platformio.ini" (Project Configuration File) <https://docs.platformio.org/page/projectconf.html>`__ results into unhandled errors
+  (`issue #2265 <https://github.com/platformio/platformio-core/issues/2265>`_)
 
 3.6.6 (2019-03-29)
 ~~~~~~~~~~~~~~~~~~
diff --git a/platformio/commands/init.py b/platformio/commands/init.py
index e90bc2fd..e7127313 100644
--- a/platformio/commands/init.py
+++ b/platformio/commands/init.py
@@ -23,6 +23,7 @@ import click
 from platformio import exception, util
 from platformio.commands.platform import \
     platform_install as cli_platform_install
+from platformio.commands.run import check_project_envs
 from platformio.ide.projectgenerator import ProjectGenerator
 from platformio.managers.platform import PlatformManager
 
@@ -130,10 +131,11 @@ def get_best_envname(project_dir, boards=None):
     config = util.load_project_config(project_dir)
     env_default = None
     if config.has_option("platformio", "env_default"):
-        env_default = config.get("platformio",
-                                 "env_default").split(", ")[0].strip()
+        env_default = util.parse_conf_multi_values(
+            config.get("platformio", "env_default"))
+        check_project_envs(config, env_default)
     if env_default:
-        return env_default
+        return env_default[0]
     section = None
     for section in config.sections():
         if not section.startswith("env:"):