DOS filename escaping for use with *nix commands

set FILENAME=%~f1

sed 's/Some Pattern/%FILENAME%/' inputfile

set FILENAME=%~f1
cygpath "s|Some Pattern|%FILENAME%|" >sedcmd.tmp
sed -f sedcmd.tmp inputfile
del /q sedcmd.tmp

set FILENAME=%~f1
echo s/Some Pattern/%FILENAME%/ | sed -e "s/\/\\/g" >sedcmd.tmp
sed -f sedcmd.tmp inputfile
del /q sedcmd.tmp

> cygpath -m c:somepath
c:/some/path