Notes from the February, 2016 meeting:

Paper P0018 is intended to change this area, so this issue is being returned to "review" status to accommodate those changes.

Proposed resolution (February, 2016):

Change 7.5.5 [expr.prim.lambda] paragraph 15 as follows, dividing the existing text into a bulleted list:

An entity is captured by copy if

• it is this,

• it is implicitly captured and the capture-default is =, or

• if it is explicitly captured with a capture that is not of the form & identifier or & identifier initializer.

For each entity captured by copy...

The current wording of 7.5.5 [expr.prim.lambda] paragraphs 15 and 16 does not, but presumably should, indicate that this, if implicitly captured, is always captured by copy and not by reference.