title: MSYS2 does not source .profile
body: <p>Using MSYS2, if I run <code>msys2_shell.bat</code>, <code>mintty</code> opens a bash login shell, but  <code>~/.profile</code> does not get sourced. </p>
  
  <p>Anyway if I run  <code>/bin/bash --login</code> inside <code>mintty</code>, <code>~/.profile</code> get sourced. Why?</p>
  
  <p>The same happens if I run <code>path\to\msys64\bin\bash.exe --login</code> via Windows prompt instead of <code>msys2_shell.bat</code>. </p>
  
  <p>PS: I tried also with <code>.bash_profile</code>.</p>