[tex-k] Error in TeXbook: Trailing tabs don't typeset

[Karl Berry]

Agreed that tabs should not be removed; we'll fix it in web2c.
Thanks.

Replacing the ISBLANK test with just a ' ' test is not right, it seems
to me. We must also remove trailing CR and LF characters, as we have
been doing since day one. Otherwise line ending portability madness
would ensue.  In tex.web, Knuth can assume this is magically taken care
of by Pascal, but ...

Thanks again,
Karl