:help <nop>
but rather is being interpreted as "less-than, en, oh, pee,
greater-than" and the "en" portion of it is trying to look for
the last regexp.
Try (untested):
:inoremap <c-u> <c-o><lt>Nop><c-u>
This is the behavior I _see_, but that I understood having
"<nop>" should send a "no-op" keycode. Thus, I had understood
the mapping
:inoremap <c-u> <c-o><nop><c-u>
would act like typing "control+O [no-op character that clears the
control-O (insert) mode] control+U". This is the behavior I had
expected.
What you propose would act like typing "control+O less-than en oh
pee greater-than control+U". This is the behavior I see.
The i_CTRL-G_u did what I wanted. Thanks though,
-tim
