master updated (804f5ac -> 3995f05)

[Philipp Stephani]

phst pushed a change to branch master.

      from  804f5ac   Revert "Remove the binding for xref-quit-and-goto-xref"
       new  3806d21   Fix small bug in 'completion-table-subvert'.
       new  3995f05   Expand documentation on nontrivial completion boundaries.


Summary of changes:
 doc/lispref/minibuf.texi      | 10 ++++++++++
 lisp/minibuffer.el            |  2 +-
 test/lisp/minibuffer-tests.el |  7 ++++++-
 3 files changed, 17 insertions(+), 2 deletions(-)