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length, ps-mule-string-char -> aref, ps-mule-next-index -> 1+,
ps-mule-next-point -> 1+).

property from text property or overlay strings at point.

created by `copy-sequence' to not override env-vars
in the global `process-environment'.

`t' to `auto-detect', and type from `boolean' to `choice'.
(grep-compute-defaults): Set `grep-highlight-matches' to `t'
if grep option `--color' is available, or to `nil' otherwise.
(grep-use-null-device): Remove redundant type `boolean' (`choice'
is already defined).

highlighting if the search string is empty.

also check the first two elements of `face-atts' and `mask-atts'.

(ispell-check-version): Set it.
(ispell-send-replacement): New function.
(ispell-process-line): Call ispell-send-replacement.

with "s".

Merge from emacs--gnus--5.10, gnus--rel--5.10

Patches applied:

 * miles@gnu.org--gnu-2004/emacs--gnus--5.10--base-0
   tag of miles@gnu.org--gnu-2004/emacs--cvs-trunk--0--patch-464

 * miles@gnu.org--gnu-2004/emacs--gnus--5.10--patch-1
   Import from CVS branch gnus-5_10-branch

 * miles@gnu.org--gnu-2004/emacs--gnus--5.10--patch-2
   Merge from lorentey@elte.hu--2004/emacs--multi-tty--0, emacs--cvs-trunk--0

 * miles@gnu.org--gnu-2004/emacs--gnus--5.10--patch-3
   Merge from gnus--rel--5.10

 * miles@gnu.org--gnu-2004/emacs--gnus--5.10--patch-4
   Merge from gnus--rel--5.10

 * miles@gnu.org--gnu-2004/gnus--rel--5.10--patch-18
   Update from CVS

 * miles@gnu.org--gnu-2004/gnus--rel--5.10--patch-19
   Remove autoconf-generated files from archive

 * miles@gnu.org--gnu-2004/gnus--rel--5.10--patch-20
   Update from CVS

to `revert-buffer'.

(isearch-push-state-function): New defvars.
(isearch-pop-fun-state): New defsubst.
(isearch-top-state): Call function saved in `isearch-pop-fun-state'.
(isearch-push-state): Set the result of calling
`isearch-push-state-function' to the `isearch-pop-fun-state' field.
(isearch-cancel): Call function saved in `isearch-pop-fun-state' to
restore the mode-specific starting point of terminated search.
(isearch-abort): Call `isearch-cancel' instead of its duplicated code.
(isearch-repeat): Call `isearch-wrap-function' if defined.
(isearch-message-prefix): Don't add prefix "over" to the message
for wrapped search if `isearch-wrap-function' is defined.
(isearch-search): Call function saved in `isearch-pop-fun-state' to
restore the mode-specific starting point of failed search.

(x-dnd-known-types): Defcustom it.
(x-dnd-handle-motif): Print message-atom in error message.

programatically constructing message.

Don't return a string that would read as the wrong character code.