(isearch-edit-string): Set 7th arg of

(isearch-edit-string): Set 7th arg of
`read-from-minibuffer' to `t' to inherit the current input
method (whose name is indicated by [IM] in the minibuffer prompt)
from the current buffer to the minibuffer.
(isearch-lazy-highlight-update): Put body to `with-local-quit'
to allow C-g quitting for lazy highlighting looping inside the
search with nested repetition operators.  Add overlay to the list
before setting its face and other properties to avoid the case of
code quitting after placing the new overlay but before it's
recorded on the list.  Select the window where isearch was
activated, to highlight matches in the right window when isearch
switches the current window to the minibuffer.