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From: Andy <AndyMHancock AT gmail DOT com>
Subject: Shelling out to cygwin bash from Windows vim Options =?utf-8?b?CQ==?=
Date: Sun, 2 Sep 2012 00:02:26 +0000 (UTC)
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This problem dogged me for many years, and I finally hunkered down to
chase it down.

Here is the solution that I found works for me:

"set shell=c:\cygwin\bin\bash.exe\ -i
   "Won't always find ~/.bashrc cuz depending on how vim is launched,
   "~ doesn't always resolve to c:/cygwin/home/$USERNAME
"let &shell='c:\cygwin\bin\bash.exe\ --rcfile c:\cygwin\home\' .
"  \ $USERNAME . '\.bashrc'
      "Backslashes are hated by bash.  Also needs -i to ensure bash is
      "interactive so that .bashrc is sourced
let &shell='c:\cygwin\bin\bash.exe --rcfile c:/cygwin/home/' .
   \ $USERNAME . '/.bashrc -i'
      " Depending on how vim is launched, c:/cygwin/home/$USERNAME
      " will sometimes be equivalent to ~.  If so, then it will be
      " replaced by ~ in &shell.

Thanks to all those who helped on the unix, bash, cygwin, and vim
forums. 


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