On Wed, 21 May 2003, Will Day wrote:
> There also seems to be some confusion whether ".pi" files are executable in
> the same fashion as ".pif" files are. For instance:
> Although the file has a .pi or .pif extension, it is an .exe file. And
> because Windows processes files according to their internal structure
> rather than their extension, Windows runs the file as soon as the
> recipient double-clicks on it.
> This doesn't match any of my experience with Windows, and I have been
> unable to get windows to launch a ".pi" file for me.
AFAIR (DOS) did start files with special extensions. the extensions
were listed in COMMAND.COM (and one could change it with a binary editor).
if a com is started and dos notices it is a exe it will load it as an exe.
it seams as if windows extends this to pif and several other.
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