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(message-mode-hook): Move it here, instead, so the user can override it.

message-flatten-list-1): Move utility functions up so macro is defined
before first invocation.

(NO_FILIO_H): Move definition.

When XmIsCascadeButton, don't call XmCreateCascadeButtonGadget,
just modify the existing one.

(NO_SOCKETS_IN_FILE_SYSTEM): Definition deleted.
(sigblock): New definition.

in an existing but empty menu item, in order to get a new functional
pulldown, the menu item must be switched from an XmPushButtonGadget
into a XmCascadeButtonGadget.

don't set auto-fill-function.  Don't turn on Auto Fill mode.

(TEXT_START, DATA_START, DATA_SEG_BITS, UNEXEC): Define only if
__ELF__ is not defined.
(LINUX_SBRK_BUG): Define only if LINUX and __GNU_LIBRARY__ < 6.
(NO_TERMIO): Always define this.  No Alpha system should need termio.
(COFF, DATA_END): Define only if __ELF__ is not defined.

"TZ=..." in environ.

Set dummy.button appropriately.
(popup_get_selection) [USE_MOTIF]: Set event.xbutton.button.

Add ~c, "e, "i, `u.

(auto-fill-mode): Use that instead of constant 'do-auto-fill.

input mean the beginning.

(dabbrev-expand): Set it for ordinary expansions;
use it when copying successive words.