Re: Passing Env Variables to Grep(as intended folders) search does not work under win32?

On 2011-06-30, kuru wrote:
> Chris
>
> I do have Cygwin here and I cannot tell which grep Vim(windows
> version) uses to be honest, since I cannot get grep to print the
> platform but I believe it is the windows version from Windows Gnu
> utilities which has v 2.5 while Cygwin version is 2.6. I have both
> greps in my system because I am on 64bit and I had issues with Cygwin
> utilities.
>
> In any case I have export ed $INCLUDES in my .bashrc so when I echo in
> Cygwin shell
>
> $ echo $INCLUDES
> /cygdrive/c/MinGW/include
>
> When I echo in Vim
> "c:\\MinGW\\include"
>
> I am using Windows version of Gvim
>
> I feel like Vim is not expanding $INCLUDES to grep in this command
> because if I just put straight absolute path to MinGW\include grep
> works
> works
> ":grep -i rand c:\MinGW\include/*"
>
> does not work
> ":grep -i random $INCLUDES/*"

Vim doesn't expand environment variables in commands executed by the
shell, it lets the shell do the expansion. If your shell is
Window's cmd.exe, it won't know how to expand a Unix-style
environment variable.

To see which shell Vim is using, execute

:set shell?

You should be able to see the command Vim executes when you execute

:grep -i random $INCLUDES/*

When I do that, I see

:!findstr /n -i random $INCLUDES/* >C:\DOCUMEN~1\garyjohn\LOCALS~1\Temp\VIeCF5.tmp 2>&1
shell returned 1
(1 of 1): FINDSTR: Cannot open $INCLUDES/*

(You may have redefined 'grepprg', but if your shell is cmd.exe, the
principles will be the same.)

I don't have $INCLUDES defined, so I tried an environment variable
that I do have defined, $USERNAME. The results were essentially the
same, as expected.

:!findstr /n -i random $USERNAME/* >C:\DOCUMEN~1\garyjohn\LOCALS~1\Temp\VIeCFA.tmp 2>&1
shell returned 1
(1 of 1): FINDSTR: Cannot open $USERNAME/*

However, the following worked, in the sense that $USERNAME, or
rather %USERNAME%, was correctly expanded.

:grep -i random \%USERNAME\%/*

:!findstr /n -i random %USERNAME%/* >C:\DOCUMEN~1\garyjohn\LOCALS~1\Temp\VIeCFB.tmp 2>&1
shell returned 1
(1 of 1): FINDSTR: Cannot open garyjohn/*

HTH,
Gary

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