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* src/Makefile.in (MSDOS_OBJ): Default to empty, let msdos scripts set it.
(MSDOS_X_OBJ): New variable.
(MSDOS_SUPPORT_REAL): New constant.
(MSDOS_SUPPORT): Set as a variable, not with cpp.
(obj): Use MSDOS_X_OBJ.
(lisp): Use MSDOS_SUPPORT as a variable.

* msdos/sed1v2.inp (MSDOS_OBJ): Edit to dosfns.o msdos.o.
(MSDOS_SUPPORT): Edit to $(MSDOS_SUPPORT_REAL).
* msdos/sed1x.inp (MSDOS_X_OBJ): Edit to w16select.o termcap.o.

* configure.in (GPM_MOUSE_SUPPORT): Remove.
(MOUSE_SUPPORT, TOOLTIP_SUPPORT, WINDOW_SUPPORT): New output variables.
(HAVE_WINDOW_SYSTEM, HAVE_MOUSE): Move out of AC_BOTTOM.

* src/Makefile.in (REAL_MOUSE_SUPPORT): New constant.
(GPM_MOUSE_SUPPORT): Now it's a constant.
(MOUSE_SUPPORT, TOOLTIP_SUPPORT, WINDOW_SUPPORT): Set with configure, not cpp.

* msdos/sed2x.inp (HAVE_WINDOW_SYSTEM): Define.
* msdos/sed1x.inp (TOOLTIP_SUPPORT): Edit to ${lispsource}tooltip.elc.
(WINDOW_SUPPORT): Edit to $(BASE_WINDOW_SUPPORT) $(X_WINDOW_SUPPORT).
* msdos/sed1v2.inp (MOUSE_SUPPORT): Edit to $(REAL_MOUSE_SUPPORT).
(TOOLTIP_SUPPORT, WINDOW_SUPPORT): Edit to empty.

Hopefully this is the right thing for msdos with X.

* configure.in (NS_IMPL_GNUSTEP_INC): New output variable.
(GNUSTEP_MAKEFILES): Do not output.

* src/Makefile.in (@NS_IMPL_GNUSTEP_INC@): Use in place of #ifdef.

* msdos/sed1v2.inp (@NS_IMPL_GNUSTEP_INC@): Edit to nil.

Some comment formatting.

* textmodes/tex-mode.el (tex-mode-map): Bind C-c C-t to
latex-open-block and C-c / to latex-close-block.

* textmodes/sgml-mode.el (sgml-mode-map): Bind C-c C-o to sgml-tag
and C-c C-e to sgml-close-tag.

only when the message would be displayed.  Handled nested calls.
(tramp-handle-load, tramp-handle-file-local-copy)
(tramp-handle-insert-file-contents, tramp-handle-write-region)
(tramp-maybe-send-script, tramp-find-shell): Use
`with-progress-reporter'.
(tramp-handle-dired-compress-file, tramp-maybe-open-connection):
Fix message text.

* net/tramp-smb.el (tramp-smb-handle-copy-file)
(tramp-smb-handle-file-local-copy, tramp-smb-handle-rename-file)
(tramp-smb-handle-write-region, tramp-smb-maybe-open-connection):
Use `with-progress-reporter'.

* ispell.el (ispell-init-process): Do not kill ispell process 
everytime when spellchecking from the minibuffer (bug#6143).

* src/Makefile.in (FONT_DRIVERS): Place with other HAVE_X_WINDOWS stuff.
(TOOLTIP_SUPPORT): Place with other HAVE_WINDOW_SYSTEM stuff.

* src/Makefile.in (FONT_DRIVERS): If HAVE_X_WINDOWS is defined,
HAVE_WINDOW_SYSTEM must be too.

* gnus-art.el (gnus-bind-safe-url-regexp): Bind mm-w3m-safe-url-regexp
 to nil when we're in a mml-preview buffer and no group is selected.

* mml1991.el (mml1991-mailcrypt-encrypt, mml1991-gpg-encrypt)
* mml2015.el (mml2015-gpg-encrypt): Disable multibyte in buffers
 generated within the mm-with-unibyte-current-buffer macro.

* src/Makefile.in (WINNT_SUPPORT): Remove, nt build does not use this file
but rather makefile.w32-in.
(lisp): Remove WINNT_SUPPORT.

* msdos/sed1x.inp (OLDXMENU): Edit to ${oldXMenudir}libXMenu11.a.
(LIBXMENU): Edit to ${OLDXMENU}.
(LIBX_OTHER): Edit to ${LIBXT} ${LIBX_EXTRA}.

* configure.in (OLDXMENU, LIBXMENU): Set to empty if !HAVE_MENUS.

* src/Makefile.in (OLDXMENU, LIBXMENU) [!HAVE_MENUS]:
Let configure set these variables (to empty) in this case as well.

* configure.in (LD_SWITCH_X_SITE, C_SWITCH_X_SITE): Do not define.

* src/Makefile.in (LD_SWITCH_X_SITE): Define as a variable, not via cpp.
(LIBX_BASE): Use $LD_SWITCH_X_SITE.

* nt/config.nt (LD_SWITCH_X_SITE, C_SWITCH_X_SITE): Remove undefs.

* msdos/sed1v2.inp: Comment.

* src/Makefile.in (C_SWITCH_X_SYSTEM, C_SWITCH_X_SITE, LIB_STANDARD)
(LIB_MATH, FONTCONFIG_CFLAGS, FONTCONFIG_LIBS, FREETYPE_CFLAGS)
(FREETYPE_LIBS, LIBOTF_CFLAGS, LIBOTF_LIBS, M17N_FLT_CFLAGS)
(M17N_FLT_LIBS, GNU_OBJC_CFLAGS, GNUSTEP_SYSTEM_LIBRARIES, LIBGPM)
(LIBRESOLV, UNEXEC_OBJ): For clarity, define variables to hold
the values output be configure.
(ALL_CFLAGS, obj, LIBES, temacs${EXEEXT}): Use the above variables.

* msdos/sed1v2.inp (C_SWITCH_X_SYSTEM, C_SWITCH_X_SITE, LIB_STANDARD)
(FONTCONFIG_CFLAGS, FONTCONFIG_LIBS, FREETYPE_CFLAGS, FREETYPE_LIBS)
(LIBOTF_CFLAGS, LIBOTF_LIBS, M17N_FLT_CFLAGS, M17N_FLT_LIBS)
(GNU_OBJC_CFLAGS, GNUSTEP_SYSTEM_LIBRARIES, LIBRESOLV, LIBGPM):
Edit to empty,
(LIB_MATH): Edit to -lm.
(UNEXEC_OBJ): Edit to unexec.o.

(convert-standard-filename): Define as alias for
dos-convert-standard-filename but only if applicable.

(gnus-summary-read-group-1): Don't jump to next group
 when catching the `C-g'.  Reported by: "Leo"
 By Andreas Seltenreich.

Push the mark at the start of these functions when appropriate.

(message-forward-make-body-plain, message-forward-make-body-mml):
 Use mm-multibyte-string-p instead of multibyte-string-p.

* src/Makefile.in (YMF_PASS_LDFLAGS, LD, LINKER): Simplify the logic.
(LINKER_WAS_SPECIFIED): Remove.

* configure.in (LIB_SRC_EXTRA_INSTALLABLES): Remove, unused.

* lib-src/Makefile.in (INSTALLABLES): Remove @LIB_SRC_EXTRA_INSTALLABLES@.

* msdos/sed3v2.inp (INSTALLABLES): No more @LIB_SRC_EXTRA_INSTALLABLES@.

* configure.in (LIB_GCC): New output variable.

* src/Makefile.in (LIB_GCC): Set using configure, not cpp.
(GNULIB_VAR) [!ORDINARY_LINK]: Always set to $LIB_GCC.
* src/m/arm.h (LIB_GCC) [GNU_LINUX]:
* src/s/cygwin.h (LIB_GCC):
* src/s/freebsd.h (LIB_GCC):
* src/s/gnu-linux.h (LIB_GCC):
* src/s/msdos.h (LIB_GCC):
* src/s/netbsd.h (LIB_GCC):
Move to configure.

* msdos/sed1v2.inp (LIB_GCC): Edit to -Lgcc.

(message-forward-make-body-mml): Assume original message is multibyte string;
 error on unibyte.
(message-forward-make-body-plain): Ditto;
 don't add excessive newline in body end.

* minibuffer.el (completion-cycle-threshold): New custom var.
(completion--do-completion): Use it.
(minibuffer-complete): Use cycling if appropriate.

* dirtrack.el (dirtrackp): Remove defcustom; don't make automatically
  buffer-local (it's an obsolete alias for `dirtrack-mode'.)

* tmm.el (tmm-prompt): Don't try to precompute bindings.
(tmm-get-keymap): Compute shortcuts since the cache is empty.

Fixes: debbugs:6171

Add `scroll-up-command' and `scroll-down-command' (bug#6164).