From a911bd15a19824c92af8e90b63af4a84a9670222 Mon Sep 17 00:00:00 2001
From: Steve Dower <steve.dower@python.org>
Date: Thu, 22 Apr 2021 20:45:47 +0100
Subject: [PATCH] bpo-43915: Add PCbuild/blurb.bat to simplify Windows
 contributors (GH-25528)

---
 PCbuild/blurb.bat | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 PCbuild/blurb.bat

diff --git a/PCbuild/blurb.bat b/PCbuild/blurb.bat
new file mode 100644
index 00000000000..0be228a2cde
--- /dev/null
+++ b/PCbuild/blurb.bat
@@ -0,0 +1,28 @@
+@echo off
+rem
+rem Runs the blurb tool. If necessary, will install Python and/or blurb.
+rem
+rem Pass "--update"/"-U" as the first argument to update blurb.
+rem
+
+call "%~dp0find_python.bat" %PYTHON%
+if ERRORLEVEL 1 (echo Cannot locate python.exe on PATH or as PYTHON variable & exit /b 3)
+
+if "%1" EQU "--update" (%PYTHON% -m pip install -U blurb && shift)
+if "%1" EQU "-U" (%PYTHON% -m pip install -U blurb && shift)
+
+%PYTHON% -m blurb %1 %2 %3 %4 %5 %6 %7 %8 %9
+if ERRORLEVEL 1 goto :install_and_retry
+exit /B 0
+
+:install_and_retry
+rem Before reporting the error, make sure that blurb is actually installed.
+rem If not, install it first and try again.
+set _ERR=%ERRORLEVEL%
+%PYTHON% -c "import blurb"
+if NOT ERRORLEVEL 1 exit /B %_ERR%
+echo Installing blurb...
+%PYTHON% -m pip install blurb
+if ERRORLEVEL 1 exit /B %ERRORLEVEL%
+%PYTHON% -m blurb %*
+exit /B