* doc/lispref/searching.texi (String Search): Incremental word search fixes.
* lisp/sort.el (delete-duplicate-lines): Remove `:weakness 'key'
from `make-hash-table'.
* lisp/textmodes/ispell.el (ispell-init-process): Change message format
to be consistent with other messages.
* etc/grep.txt: Add `eval' to the Local Variables section that
emulates `grep-filter'.
* lisp/progmodes/grep.el (grep-filter): Avoid incomplete processing by
keeping point where processing of grep matches begins, and
continue to delete remaining escape sequences from the same point.
(grep-filter): Make leading zero optional in "0?1;31m" because
git-grep emits "\033[1;31m" escape sequences unlike expected
"\033[01;31m" as GNU Grep does.
(grep-process-setup): Replace obsolete "ml=" with newer "sl=".
Fixes: debbugs:9408
