Re: proposed patch to re-execute "configure" with a LINENO-grokking shell

[Tim Van Holder]

> Come to think of it, why do we need PATH_SEPARATOR at all?  At the
> early stage, when we are detecting what kind of shell we're using, we
> can transliterate ";" to ":" if we discover we are in a DOS
> environment.  Then we don't need to use PATH_SEPARATOR at all, except
> in one little bit of code.

  PATH=C:/djgpp/bin;C:/windows/command
transliterated gives
  PATH=C:/djgpp/bin:C:/windows/command

which can no longer be walked successfully.  The whole problem with ':'
is that it is the drive separator on DOS.  Otherwise, transliterating
':' to ';' would indeed be a much cleaner method.
Some environments, like cygwin, handle this by using '/cygdrive/C/'
instead of C:/.  DJGPP has partial support for this; it's libc can use
/dev/C, but only its bash has special PATH handling to support ': as
pathsep properly.  OS/2 has no special handling at all.