# Control symbol formed by escape character followed by return

Does the control symbol obtained by following the escape character by return (\<return>, catcode 0 then catcode 5) behave like the control space character (\<space>, catcode 0 then catcode 10)? It seems to:

\TeX\ blah

typesets the same way

\TeX\
blah

does. But I can't justify this behavior by tracing through the lexing process as described in the texbook. What exactly is tex doing here?

• Recall that trailing spaces and tabs are removed from the line and that the \endlinechar is added, so what TeX sees is <backslash><endlinechar>. – egreg Dec 1 '17 at 17:52