texi2dvi texinfo 4.5 path_sep bugs

[Per Mildner]

These bugs are in texi2dvi as installed by texinfo 4.5
# $Id: texi2dvi,v 1.14 2003/02/05 00:42:33 karl Exp $

The following from texi2dvi is wrong on cygwin (since COMSPEC will be
set, even though the path_sep is ':').

# Systems which define $COMSPEC or $ComSpec use semicolons to separate
# directories in TEXINPUTS.
if test -n "$COMSPEC$ComSpec"; then
  path_sep=";"
else
  path_sep=":"
fi

The following hardwires path_sep as ':'

  # Empty path components are meaningful to tex.  We rewrite them
  # as `EMPTY' so they don't get lost when we split on $path_sep.
   TEXINPUTS=`echo $TEXINPUTS  |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`
  INDEXSTYLE=`echo $INDEXSTYLE |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`

Regards,