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* configure.ac (DIRECTORY_SEP): Move here from src/lisp.h.

* src/lisp.h (DIRECTORY_SEP): Let configure set it.

* nt/config.nt (DIRECTORY_SEP): Move here from src/lisp.h.

* lib-src/movemail.c (DIRECTORY_SEP, IS_DIRECTORY_SEP):
* lib-src/make-docfile.c (DIRECTORY_SEP, IS_DIRECTORY_SEP):
* lib-src/emacsclient.c (DIRECTORY_SEP, IS_DIRECTORY_SEP, IS_DEVICE_SEP):
Remove (they are in config.h now).

Replace with SEPCHAR from config.h.

parentheses should be put around products in denominators.  Give
multiplication precedence over division during composition.

* man.el (Man-switches, Man-sed-command, Man-awk-command)
(Man-mode-hook, Man-cooked-hook, Man-untabify-command-args)
(Man-untabify-command, manual-program): Convert to defcustom.

Fixes: debbugs:10429

This fixes M-q for Change Log entries which contain "(Bug#123)".

Fixes: debbugs:10127

(log-view-diff-changeset, log-view-minor-wrap): Likewise.

Fixes: debbugs:10133

Plus some code cleanups.

Fixes: debbugs:10047

to improve legibility.

* termhooks.h (TSET): New macro.
* coding.c, terminal.c, xselect.c: Adjust users.

(python-pdbtrack-buffers-to-kill, python-shell-internal-buffer)
(python-shell-internal-last-output): Use make-local-variable
instead of make-variable-buffer-local.

(python-nav-forward-sexp): Rename from
python-nav-forward-sexp-function.
(python-nav--forward-sexp, python-nav--backward-sexp): New
functions.

and simplification modes.

file-supersession signals.

Fixes: debbugs:12161

the failing expression, include them in the error message.
* src/eval.c (internal_condition_case_n): Pass nargs and args to hfun.
* src/lisp.h (internal_condition_case_n): Update declaration.

(cl-map-extents): Add compatibility aliases.

Fixes: debbugs:12135

* configure.ac (--disable-features): Rename to --without-all.
(OPTION_DEFAULT_ON): Change to use with_features.
* INSTALL: Fix description.
* etc/NEWS: Mention --without-all and --enable-link-time-optimization.

* buffer.c (unchain_both): New function.
* buffer.h (buffer_get_overlays, buffer_set_overlays):
(buffer_has_overlays): New function.
(enum overlay_type): New enum.
* alloc.c, buffer.c, editfns.c, fileio.c, indent.c:
* insdel.c, intervals.c, print.c, xdisp.c: Adjust users.

tests by `ignore-error'.
(tramp-find-shell): Open also a new shell, when cache is already
set.  Reported by Carsten Bormann <cabo@tzi.org>.  (Bug#12148)

* alloc.c (mark_interval_tree): Remove.
(MARK_INTERVAL_TREE): Simplify.
(UNMARK_BALANCE_INTERVALS): Remove.  Adjust users.
* intervals.c (buffer_balance_intervals): New function.
(graft_intervals_into_buffer): Adjust indentation.
(set_intervals_multibyte): Simplify.
* buffer.h (BUF_INTERVALS): Remove.
(buffer_get_intervals, buffer_set_intervals): New function.
* alloc.c, buffer.c, editfns.c, fileio.c, indent.c, insdel.c:
* intervals.c, textprop.c: Adjust users.

* lisp.h (STRING_INTERVALS, STRING_SET_INTERVALS): Remove.
(string_get_intervals, string_set_intervals): New function.
* alloc.c, buffer.c, editfns.c, fns.c, insdel.c, intervals.c:
* lread.c, print.c, textprop.c: Adjust users.

(bookmark-current-buffer): Doc fix.
(bookmark-make-record): Add `defaults' property with default values
to the bookmark record.
(bookmark-minibuffer-read-name-map): Remove key binding "\C-u"
with `bookmark-insert-current-bookmark'.
(bookmark-set): Get `defaults' property from the bookmark record
and use it in `read-from-minibuffer'.
(bookmark-insert-current-bookmark): Remove function.

* lisp/info.el (Info-bookmark-make-record): Add `defaults' property
with values of canonical Info node name, the current Info file name
and the current Info node name.

Fixes: debbugs:12107

of `read-file-name' when buffer is not visiting a file.

Fixes: debbugs:12128

(Info-search): Change search-failed message from "initial node" to
"end of node".
(Info-isearch-search): Change `isearch-string-state' to
`isearch--state-string'.

Fixes: debbugs:12078

* lisp/language/persian.el: Remove file.
* lisp/language/misc-lang.el: Move non-unique part of persian.el here.
* lisp/loadup.el: Remove language/persian.

* src/lisp.mk (lisp): Remove language/persian.elc.

* etc/NEWS: Improve entry.

* intervals.h (NULL_INTERVAL, DEFAULT_INTERVAL): Remove.
(NULL_INTERVAL_P): Likewise.  Adjust users.
(FRONT_STICKY_P, END_NONSTICKY_P, FRONT_NONSTICKY_P): Adjust
comment.  Move under #if 0.
* alloc.c, buffer.c, editfns.c, fns.c, insdel.c, intervals.c:
* print.c, syntax.c, textprop.c, xdisp.c: Adjust users.

* intervals.h (CHECK_TOTAL_LENGTH): Remove.
* intervals.c: Change all users to eassert.

(python-syntax-context) Rename from python-info-ppss-context.
(python-syntax-context-type): Rename from
python-info-ppss-context-type.
(python-syntax-comment-or-string-p): Rename from
python-info-ppss-comment-or-string-p.