Apparently, " is part of an accented character in US(international) keyboard
layout (additional character specific to the language of an origin - for
example, left and right double quotation marks). The code did not handle it
too well since it maps to 2 ASCII characters instead of one (one of them is
so called "dead" character). We can ignore the dead character as a
workaround for this problem. The patch is attached.
<Someone>.