Don't need `lexical-let' here.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Add TODO item. (M)

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Fix typo in code. (M)

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Don't scramble passwords in lambda when reading interactively.

This handling just provides a false sense of security. `lexical-let'
isn't available without cl.el, so we have to make a choice.

A possible workaround is described in a TODO item in todo.org.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>