How to delete carriage return using batch file

[ddtpmyra]

I found this script and it's working perfectly fine it just that it can only process less file 8KB and I have bigger than that 49kb. Anybody who can help me to resolve this problem?

sample data

apple banana mango
apple banana mango
apple banana mango

output data desired
apple banana mango apple banana mango apple banana mango

@echo off > newfile
setLocal EnableDelayedExpansion
for /f "tokens=* delims= " %%a in (current.txt) do (
set s=!s!%%a
)
echo !s! >> newfile.dat


pause