Hi Linda,

It looks like you have most of this figured out.  I just thought I'd
try to answer some remaining questions.

On 2011-07-14, Linda W wrote:

>    Why is it ignoring my .vimrc for a _vimrc
> on an NTFS win7 system?  Oh...nevermind...
> I just deleted the _vimrc, and now it picks up .vimrc...
> (Lame!)

See

    :help _vimrc

and the first note:

    Note: For Unix, OS/2 and Amiga, when ".vimrc" does not exist,
    "_vimrc" is also tried, in case an MS-DOS compatible file
    system is used.  For MS-DOS and Win32 ".vimrc" is checked
    after "_vimrc", in case long file names are used.

> :echo $HOME
> i:\
> ----
> Interesting, I have HOME, in my cygwin BASH,
> but not in a raw cmd (one not spawned/run from BASH).
> There, I only have:
> HOMEDRIVE=i:
> HOMEPATH=\
> HOMESHARE=\\BLISS\linda w
> 
> Note, that "i:" is 'map'd to  \\Bliss\linda w
> 
> So it sorta all ties together...but HOME is 'synthetic' on windows.
> 
> Cygwin has it closest to 'right', since if I didn't have drive 'i' mapped
> to \\Bliss\linda w, I'm not sure where Vim would get HOME...

Unfortunately there is no help topic on this.  However ":helpgrep
HOMEDRIVE" finds these notes in version6.txt:

    - When $HOMEDRIVE and $HOMEPATH are defined, use them to define
      $HOME.  (Craig Barkhouse)

    Patch 6.1.146
    Problem:    MS-Windows: When $HOME is constructed from
                $HOMEDRIVE and $HOMEPATH, it is not used for storing
                the _viminfo file.  (Normal Diamond)
    Solution:   Set $HOME with the value obtained from $HOMEDRIVE
                and $HOMEPATH.
    Files:      src/misc1.c

Regards,
Gary

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