From 9f7a93a620aad0f87f5edc583aed7871998284e1 Mon Sep 17 00:00:00 2001
From: Karlson2k <k2k@narod.ru>
Date: Sat, 16 Jul 2016 19:20:44 +0300
Subject: [PATCH] msys2_shell.cmd: print help if asked by '--help', '-?' or
 '/?' parameters This simplify usage for people who are used to the MS or GNU
 standards.

---
 filesystem/msys2_shell.cmd | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/filesystem/msys2_shell.cmd b/filesystem/msys2_shell.cmd
index 2c870a24..287f0f16 100644
--- a/filesystem/msys2_shell.cmd
+++ b/filesystem/msys2_shell.cmd
@@ -20,6 +20,18 @@ if "x%~1" == "x-help" (
   call :printhelp "%~nx0"
   exit /b %ERRORLEVEL%
 )
+if "x%~1" == "x--help" (
+  call :printhelp "%~nx0"
+  exit /b %ERRORLEVEL%
+)
+if "x%~1" == "x-?" (
+  call :printhelp "%~nx0"
+  exit /b %ERRORLEVEL%
+)
+if "x%~1" == "x/?" (
+  call :printhelp "%~nx0"
+  exit /b %ERRORLEVEL%
+)
 rem Shell types
 if "x%~1" == "x-msys" shift& set MSYSTEM=MSYS& goto :checkparams
 if "x%~1" == "x-msys2" shift& set MSYSTEM=MSYS& goto :checkparams
@@ -132,6 +144,7 @@ echo                                      Set terminal type
 echo     -here [DIRECTORY]                Starting directory
 echo     -[use-]full-path                 Use full currnent PATH variable
 echo                                      instead of triming to minimal
+echo     -help ^| --help ^| -? ^| /?         Display this help and exit
 echo.
 echo Any parameter that cannot be treated as valid option and all
 echo following parameters are passed as bash command parameters.