[Help-bash] How to prevent parameters being interpreted in pipe?

[Patrick Schleizer]

Hi,

code talks. :)

works:
echo "test" | base64 -d

works:
echo "--INVALID something" | grep thing

Let's assume the input would be different.

does not work:
echo "-e test" | base64 -d

Why works base64 different?

How to prevent interpreting "-e" as parameter? I.e. how to have it
interpreter as string?

Cheers,
Patrick