/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * definition of global variables
 */

/*
 * Number of Rows and Columns in the screen.
 * Must be long to be able to use them as options in option.c.
 * Note: Use screen_Rows and screen_Columns to access items in ScreenLines[].
 * They may have different values when the screen wasn't (re)allocated yet
 * after setting Rows or Columns (e.g., when starting up).
 */
EXTERN long	Rows			/* nr of rows in the screen */
#ifdef DO_INIT
# if defined(MSDOS) || defined(WIN3264) || defined(OS2)
			    = 25L
# else
			    = 24L
# endif
#endif
			    ;
EXTERN long	Columns INIT(= 80);	/* nr of columns in the screen */

/*
 * The characters that are currently on the screen are kept in ScreenLines[].
 * It is a single block of characters, the size of the screen plus one line.
 * The attributes for those characters are kept in ScreenAttrs[].
 *
 * "LineOffset[n]" is the offset from ScreenLines[] for the start of line 'n'.
 * The same value is used for ScreenLinesUC[] and ScreenAttrs[].
 *
 * Note: before the screen is initialized and when out of memory these can be
 * NULL.
 */
EXTERN schar_T	*ScreenLines INIT(= NULL);
EXTERN sattr_T	*ScreenAttrs INIT(= NULL);
EXTERN unsigned	*LineOffset INIT(= NULL);
EXTERN char_u	*LineWraps INIT(= NULL);	/* line wraps to next line */

#ifdef FEAT_MBYTE
/*
 * When using Unicode characters (in UTF-8 encoding) the character in
 * ScreenLinesUC[] contains the Unicode for the character at this position, or
 * NUL when the character in ScreenLines[] is to be used (ASCII char).
 * The composing characters are to be drawn on top of the original character.
 * ScreenLinesC[0][off] is only to be used when ScreenLinesUC[off] != 0.
 * Note: These three are only allocated when enc_utf8 is set!
 */
EXTERN u8char_T	*ScreenLinesUC INIT(= NULL);	/* decoded UTF-8 characters */
EXTERN u8char_T	*ScreenLinesC[MAX_MCO];		/* composing characters */
EXTERN int	Screen_mco INIT(= 0);		/* value of p_mco used when
						   allocating ScreenLinesC[] */

/* Only used for euc-jp: Second byte of a character that starts with 0x8e.
 * These are single-width. */
EXTERN schar_T	*ScreenLines2 INIT(= NULL);
#endif

#ifdef FEAT_WINDOWS
/*
 * Indexes for tab page line:
 *	N > 0 for label of tab page N
 *	N == 0 for no label
 *	N < 0 for closing tab page -N
 *	N == -999 for closing current tab page
 */
EXTERN short	*TabPageIdxs INIT(= NULL);
#endif

EXTERN int	screen_Rows INIT(= 0);	    /* actual size of ScreenLines[] */
EXTERN int	screen_Columns INIT(= 0);   /* actual size of ScreenLines[] */

/*
 * When vgetc() is called, it sets mod_mask to the set of modifiers that are
 * held down based on the MOD_MASK_* symbols that are read first.
 */
EXTERN int	mod_mask INIT(= 0x0);		/* current key modifiers */

/*
 * Cmdline_row is the row where the command line starts, just below the
 * last window.
 * When the cmdline gets longer than the available space the screen gets
 * scrolled up. After a CTRL-D (show matches), after hitting ':' after
 * "hit return", and for the :global command, the command line is
 * temporarily moved.  The old position is restored with the next call to
 * update_screen().
 */
EXTERN int	cmdline_row;

EXTERN int	redraw_cmdline INIT(= FALSE);	/* cmdline must be redrawn */
EXTERN int	clear_cmdline INIT(= FALSE);	/* cmdline must be cleared */
EXTERN int	mode_displayed INIT(= FALSE);	/* mode is being displayed */
#if defined(FEAT_CRYPT) || defined(FEAT_EVAL)
EXTERN int	cmdline_star INIT(= FALSE);	/* cmdline is crypted */
#endif

EXTERN int	exec_from_reg INIT(= FALSE);	/* executing register */

EXTERN int	screen_cleared INIT(= FALSE);	/* screen has been cleared */

#ifdef FEAT_CRYPT
EXTERN int      use_crypt_method INIT(= 0);
#endif

/*
 * When '$' is included in 'cpoptions' option set:
 * When a change command is given that deletes only part of a line, a dollar
 * is put at the end of the changed text. dollar_vcol is set to the virtual
 * column of this '$'.
 */
EXTERN colnr_T	dollar_vcol INIT(= 0);

#ifdef FEAT_INS_EXPAND
/*
 * Variables for Insert mode completion.
 */

/* Length in bytes of the text being completed (this is deleted to be replaced
 * by the match.) */
EXTERN int	compl_length INIT(= 0);

/* Set when character typed while looking for matches and it means we should
 * stop looking for matches. */
EXTERN int	compl_interrupted INIT(= FALSE);

/* List of flags for method of completion. */
EXTERN int	compl_cont_status INIT(= 0);
# define CONT_ADDING	1	/* "normal" or "adding" expansion */
# define CONT_INTRPT	(2 + 4)	/* a ^X interrupted the current expansion */
				/* it's set only iff N_ADDS is set */
# define CONT_N_ADDS	4	/* next ^X<> will add-new or expand-current */
# define CONT_S_IPOS	8	/* next ^X<> will set initial_pos?
				 * if so, word-wise-expansion will set SOL */
# define CONT_SOL	16	/* pattern includes start of line, just for
				 * word-wise expansion, not set for ^X^L */
# define CONT_LOCAL	32	/* for ctrl_x_mode 0, ^X^P/^X^N do a local
				 * expansion, (eg use complete=.) */
#endif

/*
 * Functions for putting characters in the command line,
 * while keeping ScreenLines[] updated.
 */
#ifdef FEAT_RIGHTLEFT
EXTERN int	cmdmsg_rl INIT(= FALSE);    /* cmdline is drawn right to left */
#endif
EXTERN int	msg_col;
EXTERN int	msg_row;
EXTERN int	msg_scrolled;	/* Number of screen lines that windows have
				 * scrolled because of printing messages. */
EXTERN int	msg_scrolled_ign INIT(= FALSE);
				/* when TRUE don't set need_wait_return in
				   msg_puts_attr() when msg_scrolled is
				   non-zero */

EXTERN char_u	*keep_msg INIT(= NULL);	    /* msg to be shown after redraw */
EXTERN int	keep_msg_attr INIT(= 0);    /* highlight attr for keep_msg */
EXTERN int	keep_msg_more INIT(= FALSE); /* keep_msg was set by msgmore() */
EXTERN int	need_fileinfo INIT(= FALSE);/* do fileinfo() after redraw */
EXTERN int	msg_scroll INIT(= FALSE);   /* msg_start() will scroll */
EXTERN int	msg_didout INIT(= FALSE);   /* msg_outstr() was used in line */
EXTERN int	msg_didany INIT(= FALSE);   /* msg_outstr() was used at all */
EXTERN int	msg_nowait INIT(= FALSE);   /* don't wait for this msg */
EXTERN int	emsg_off INIT(= 0);	    /* don't display errors for now,
					       unless 'debug' is set. */
EXTERN int	info_message INIT(= FALSE); /* printing informative message */
EXTERN int      msg_hist_off INIT(= FALSE); /* don't add messages to history */
#ifdef FEAT_EVAL
EXTERN int	need_clr_eos INIT(= FALSE); /* need to clear text before
					       displaying a message. */
EXTERN int	emsg_skip INIT(= 0);	    /* don't display errors for
					       expression that is skipped */
EXTERN int	emsg_severe INIT(= FALSE);   /* use message of next of several
					       emsg() calls for throw */
EXTERN int	did_endif INIT(= FALSE);    /* just had ":endif" */
#endif
EXTERN int	did_emsg;		    /* set by emsg() when the message
					       is displayed or thrown */
EXTERN int	called_emsg;		    /* always set by emsg() */
EXTERN int	ex_exitval INIT(= 0);	    /* exit value for ex mode */
EXTERN int	emsg_on_display INIT(= FALSE);	/* there is an error message */
EXTERN int	rc_did_emsg INIT(= FALSE);  /* vim_regcomp() called emsg() */

EXTERN int	no_wait_return INIT(= 0);   /* don't wait for return for now */
EXTERN int	need_wait_return INIT(= 0); /* need to wait for return later */
EXTERN int	did_wait_return INIT(= FALSE);	/* wait_return() was used and
						   nothing written since then */
#ifdef FEAT_TITLE
EXTERN int	need_maketitle INIT(= TRUE); /* call maketitle() soon */
#endif

EXTERN int	quit_more INIT(= FALSE);    /* 'q' hit at "--more--" msg */
#if defined(UNIX) || defined(__EMX__) || defined(VMS) || defined(MACOS_X)
EXTERN int	newline_on_exit INIT(= FALSE);	/* did msg in altern. screen */
EXTERN int	intr_char INIT(= 0);	    /* extra interrupt character */
#endif
#if (defined(UNIX) || defined(VMS)) && defined(FEAT_X11)
EXTERN int	x_no_connect INIT(= FALSE); /* don't connect to X server */
# if defined(FEAT_CLIENTSERVER)
EXTERN int	x_force_connect INIT(= FALSE); /* Do connect to X server.
						  Overrules x_no_connect and
						  "exclude" in 'clipboard'. */
# endif
#endif
EXTERN int	ex_keep_indent INIT(= FALSE); /* getexmodeline(): keep indent */
EXTERN int	vgetc_busy INIT(= 0);	    /* when inside vgetc() then > 0 */

EXTERN int	didset_vim INIT(= FALSE);   /* did set $VIM ourselves */
EXTERN int	didset_vimruntime INIT(= FALSE);   /* idem for $VIMRUNTIME */

/*
 * Lines left before a "more" message.	Ex mode needs to be able to reset this
 * after you type something.
 */
EXTERN int	lines_left INIT(= -1);	    /* lines left for listing */
EXTERN int	msg_no_more INIT(= FALSE);  /* don't use more prompt, truncate
					       messages */

EXTERN char_u	*sourcing_name INIT( = NULL);/* name of error message source */
EXTERN linenr_T	sourcing_lnum INIT(= 0);    /* line number of the source file */

#ifdef FEAT_EVAL
EXTERN int	ex_nesting_level INIT(= 0);	/* nesting level */
EXTERN int	debug_break_level INIT(= -1);	/* break below this level */
EXTERN int	debug_did_msg INIT(= FALSE);	/* did "debug mode" message */
EXTERN int	debug_tick INIT(= 0);		/* breakpoint change count */
# ifdef FEAT_PROFILE
EXTERN int	do_profiling INIT(= PROF_NONE);	/* PROF_ values */
# endif

/*
 * The exception currently being thrown.  Used to pass an exception to
 * a different cstack.  Also used for discarding an exception before it is
 * caught or made pending.  Only valid when did_throw is TRUE.
 */
EXTERN except_T *current_exception;

/*
 * did_throw: An exception is being thrown.  Reset when the exception is caught
 * or as long as it is pending in a finally clause.
 */
EXTERN int did_throw INIT(= FALSE);

/*
 * need_rethrow: set to TRUE when a throw that cannot be handled in do_cmdline()
 * must be propagated to the cstack of the previously called do_cmdline().
 */
EXTERN int need_rethrow INIT(= FALSE);

/*
 * check_cstack: set to TRUE when a ":finish" or ":return" that cannot be
 * handled in do_cmdline() must be propagated to the cstack of the previously
 * called do_cmdline().
 */
EXTERN int check_cstack INIT(= FALSE);

/*
 * Number of nested try conditionals (across function calls and ":source"
 * commands).
 */
EXTERN int trylevel INIT(= 0);

/*
 * When "force_abort" is TRUE, always skip commands after an error message,
 * even after the outermost ":endif", ":endwhile" or ":endfor" or for a
 * function without the "abort" flag.  It is set to TRUE when "trylevel" is
 * non-zero (and ":silent!" was not used) or an exception is being thrown at
 * the time an error is detected.  It is set to FALSE when "trylevel" gets
 * zero again and there was no error or interrupt or throw.
 */
EXTERN int force_abort INIT(= FALSE);

/*
 * "msg_list" points to a variable in the stack of do_cmdline() which keeps
 * the list of arguments of several emsg() calls, one of which is to be
 * converted to an error exception immediately after the failing command
 * returns.  The message to be used for the exception value is pointed to by
 * the "throw_msg" field of the first element in the list.  It is usually the
 * same as the "msg" field of that element, but can be identical to the "msg"
 * field of a later list element, when the "emsg_severe" flag was set when the
 * emsg() call was made.
 */
EXTERN struct msglist **msg_list INIT(= NULL);

/*
 * suppress_errthrow: When TRUE, don't convert an error to an exception.  Used
 * when displaying the interrupt message or reporting an exception that is still
 * uncaught at the top level (which has already been discarded then).  Also used
 * for the error message when no exception can be thrown.
 */
EXTERN int suppress_errthrow INIT(= FALSE);

/*
 * The stack of all caught and not finished exceptions.  The exception on the
 * top of the stack is the one got by evaluation of v:exception.  The complete
 * stack of all caught and pending exceptions is embedded in the various
 * cstacks; the pending exceptions, however, are not on the caught stack.
 */
EXTERN except_T *caught_stack INIT(= NULL);

#endif

#ifdef FEAT_EVAL
/*
 * Garbage collection can only take place when we are sure there are no Lists
 * or Dictionaries being used internally.  This is flagged with
 * "may_garbage_collect" when we are at the toplevel.
 * "want_garbage_collect" is set by the garbagecollect() function, which means
 * we do garbage collection before waiting for a char at the toplevel.
 * "garbage_collect_at_exit" indicates garbagecollect(1) was called.
 */
EXTERN int	may_garbage_collect INIT(= FALSE);
EXTERN int	want_garbage_collect INIT(= FALSE);
EXTERN int	garbage_collect_at_exit INIT(= FALSE);

/* ID of script being sourced or was sourced to define the current function. */
EXTERN scid_T	current_SID INIT(= 0);
#endif

#if defined(FEAT_EVAL) || defined(FEAT_SYN_HL)
/* Magic number used for hashitem "hi_key" value indicating a deleted item.
 * Only the address is used. */
EXTERN char_u	hash_removed;
#endif


EXTERN int	scroll_region INIT(= FALSE); /* term supports scroll region */
EXTERN int	t_colors INIT(= 0);	    /* int value of T_CCO */

/*
 * When highlight_match is TRUE, highlight a match, starting at the cursor
 * position.  Search_match_lines is the number of lines after the match (0 for
 * a match within one line), search_match_endcol the column number of the
 * character just after the match in the last line.
 */
EXTERN int	highlight_match INIT(= FALSE);	/* show search match pos */
EXTERN linenr_T	search_match_lines;		/* lines of of matched string */
EXTERN colnr_T	search_match_endcol;		/* col nr of match end */

EXTERN int	no_smartcase INIT(= FALSE);	/* don't use 'smartcase' once */

EXTERN int	need_check_timestamps INIT(= FALSE); /* need to check file
							timestamps asap */
EXTERN int	did_check_timestamps INIT(= FALSE); /* did check timestamps
						       recently */
EXTERN int	no_check_timestamps INIT(= 0);	/* Don't check timestamps */

EXTERN int	highlight_attr[HLF_COUNT];  /* Highl. attr for each context. */
#ifdef FEAT_STL_OPT
# define USER_HIGHLIGHT
#endif
#ifdef USER_HIGHLIGHT
EXTERN int	highlight_user[9];		/* User[1-9] attributes */
# ifdef FEAT_STL_OPT
EXTERN int	highlight_stlnc[9];		/* On top of user */
# endif
#endif
#ifdef FEAT_GUI
EXTERN char_u	*use_gvimrc INIT(= NULL);	/* "-U" cmdline argument */
#endif
EXTERN int	cterm_normal_fg_color INIT(= 0);
EXTERN int	cterm_normal_fg_bold INIT(= 0);
EXTERN int	cterm_normal_bg_color INIT(= 0);

#ifdef FEAT_AUTOCMD
EXTERN int	autocmd_busy INIT(= FALSE);	/* Is apply_autocmds() busy? */
EXTERN int	autocmd_no_enter INIT(= FALSE); /* *Enter autocmds disabled */
EXTERN int	autocmd_no_leave INIT(= FALSE); /* *Leave autocmds disabled */
EXTERN int	modified_was_set;		/* did ":set modified" */
EXTERN int	did_filetype INIT(= FALSE);	/* FileType event found */
EXTERN int	keep_filetype INIT(= FALSE);	/* value for did_filetype when
						   starting to execute
						   autocommands */

/* When deleting the current buffer, another one must be loaded.  If we know
 * which one is preferred, au_new_curbuf is set to it */
EXTERN buf_T	*au_new_curbuf INIT(= NULL);
#endif

#ifdef FEAT_MOUSE
/*
 * Mouse coordinates, set by check_termcode()
 */
EXTERN int	mouse_row;
EXTERN int	mouse_col;
EXTERN int	mouse_past_bottom INIT(= FALSE);/* mouse below last line */
EXTERN int	mouse_past_eol INIT(= FALSE);	/* mouse right of line */
EXTERN int	mouse_dragging INIT(= 0);	/* extending Visual area with
						   mouse dragging */
# if defined(FEAT_MOUSE_DEC)
/*
 * When the DEC mouse has been pressed but not yet released we enable
 * automatic querys for the mouse position.
 */
EXTERN int	WantQueryMouse INIT(= FALSE);
# endif

# ifdef FEAT_GUI
/* When the window layout is about to be changed, need_mouse_correct is set,
 * so that gui_mouse_correct() is called afterwards, to correct the mouse
 * pointer when focus-follow-mouse is being used. */
EXTERN int	need_mouse_correct INIT(= FALSE);

/* When double clicking, topline must be the same */
EXTERN linenr_T gui_prev_topline INIT(= 0);
#  ifdef FEAT_DIFF
EXTERN int	gui_prev_topfill INIT(= 0);
#  endif
# endif

# ifdef FEAT_MOUSESHAPE
EXTERN int	drag_status_line INIT(= FALSE);	/* dragging the status line */
EXTERN int	postponed_mouseshape INIT(= FALSE); /* postponed updating the
						       mouse pointer shape */
#  ifdef FEAT_VERTSPLIT
EXTERN int	drag_sep_line INIT(= FALSE);	/* dragging vert separator */
#  endif
# endif

#endif

#ifdef FEAT_DIFF
/* Value set from 'diffopt'. */
EXTERN int	diff_context INIT(= 6);		/* context for folds */
EXTERN int	diff_foldcolumn INIT(= 2);	/* 'foldcolumn' for diff mode */
EXTERN int	diff_need_scrollbind INIT(= FALSE);
#endif

#ifdef FEAT_MENU
/* The root of the menu hierarchy. */
EXTERN vimmenu_T	*root_menu INIT(= NULL);
/*
 * While defining the system menu, sys_menu is TRUE.  This avoids
 * overruling of menus that the user already defined.
 */
EXTERN int	sys_menu INIT(= FALSE);
#endif

/* While redrawing the screen this flag is set.  It means the screen size
 * ('lines' and 'rows') must not be changed. */
EXTERN int	updating_screen INIT(= FALSE);

#ifdef FEAT_GUI
# ifdef FEAT_MENU
/* Menu item just selected, set by check_termcode() */
EXTERN vimmenu_T	*current_menu;

/* Set to TRUE after adding/removing menus to ensure they are updated */
EXTERN int force_menu_update INIT(= FALSE);
# endif
# ifdef FEAT_GUI_TABLINE
/* Tab in tab pages line just selected, set by check_termcode() */
EXTERN int	    current_tab;

/* Menu entry in tab pages line menu just selected, set by check_termcode() */
EXTERN int	    current_tabmenu;
#  define TABLINE_MENU_CLOSE	1
#  define TABLINE_MENU_NEW	2
#  define TABLINE_MENU_OPEN	3
# endif

/* Scrollbar moved and new value, set by check_termcode() */
EXTERN int	current_scrollbar;
EXTERN long_u	scrollbar_value;

/* found "-rv" or "-reverse" in command line args */
EXTERN int	found_reverse_arg INIT(= FALSE);

/* "-fn" or "-font" command line argument */
EXTERN char	*font_argument INIT(= NULL);

# ifdef FEAT_GUI_GTK
/* "-bg" or "-background" command line argument */
EXTERN char	*background_argument INIT(= NULL);

/* "-fg" or "-foreground" command line argument */
EXTERN char	*foreground_argument INIT(= NULL);
# endif

/*
 * While executing external commands or in Ex mode, should not insert GUI
 * events in the input buffer: Set hold_gui_events to non-zero.
 *
 * volatile because it is used in signal handler sig_sysmouse().
 */
EXTERN volatile int hold_gui_events INIT(= 0);

/*
 * When resizing the shell is postponed, remember the new size, and call
 * gui_resize_shell() later.
 */
EXTERN int	new_pixel_width INIT(= 0);
EXTERN int	new_pixel_height INIT(= 0);

/* Window position from ":winpos", to be used when opening the GUI window. */
EXTERN int	gui_win_x INIT(= -1);
EXTERN int	gui_win_y INIT(= -1);
#endif

#ifdef FEAT_CLIPBOARD
EXTERN VimClipboard clip_star;	/* PRIMARY selection in X11 */
# ifdef FEAT_X11
EXTERN VimClipboard clip_plus;	/* CLIPBOARD selection in X11 */
# else
#  define clip_plus clip_star	/* there is only one clipboard */
#  define ONE_CLIPBOARD
# endif

#define CLIP_UNNAMED      1
#define CLIP_UNNAMED_PLUS 2
EXTERN int	clip_unnamed INIT(= 0); /* above two values or'ed */

EXTERN int	clip_autoselect INIT(= FALSE);
EXTERN int	clip_autoselectml INIT(= FALSE);
EXTERN int	clip_html INIT(= FALSE);
EXTERN regprog_T *clip_exclude_prog INIT(= NULL);
#endif

/*
 * All windows are linked in a list. firstwin points to the first entry,
 * lastwin to the last entry (can be the same as firstwin) and curwin to the
 * currently active window.
 * Without the FEAT_WINDOWS they are all equal.
 */
#ifdef FEAT_WINDOWS
EXTERN win_T	*firstwin;		/* first window */
EXTERN win_T	*lastwin;		/* last window */
EXTERN win_T	*prevwin INIT(= NULL);	/* previous window */
# define W_NEXT(wp) ((wp)->w_next)
# define FOR_ALL_WINDOWS(wp) for (wp = firstwin; wp != NULL; wp = wp->w_next)
# define FOR_ALL_TAB_WINDOWS(tp, wp) \
    for ((tp) = first_tabpage; (tp) != NULL; (tp) = (tp)->tp_next) \
	for ((wp) = ((tp) == curtab) \
		? firstwin : (tp)->tp_firstwin; (wp); (wp) = (wp)->w_next)
#else
# define firstwin curwin
# define lastwin curwin
# define W_NEXT(wp) NULL
# define FOR_ALL_WINDOWS(wp) wp = curwin;
# define FOR_ALL_TAB_WINDOWS(tp, wp) wp = curwin;
#endif

EXTERN win_T	*curwin;	/* currently active window */

#ifdef FEAT_AUTOCMD
EXTERN win_T	*aucmd_win;	/* window used in aucmd_prepbuf() */
EXTERN int	aucmd_win_used INIT(= FALSE);	/* aucmd_win is being used */
#endif

/*
 * The window layout is kept in a tree of frames.  topframe points to the top
 * of the tree.
 */
EXTERN frame_T	*topframe;	/* top of the window frame tree */

#ifdef FEAT_WINDOWS
/*
 * Tab pages are alternative topframes.  "first_tabpage" points to the first
 * one in the list, "curtab" is the current one.
 */
EXTERN tabpage_T    *first_tabpage;
EXTERN tabpage_T    *curtab;
EXTERN int	    redraw_tabline INIT(= FALSE);  /* need to redraw tabline */
#endif

/*
 * All buffers are linked in a list. 'firstbuf' points to the first entry,
 * 'lastbuf' to the last entry and 'curbuf' to the currently active buffer.
 */
EXTERN buf_T	*firstbuf INIT(= NULL);	/* first buffer */
EXTERN buf_T	*lastbuf INIT(= NULL);	/* last buffer */
EXTERN buf_T	*curbuf INIT(= NULL);	/* currently active buffer */

/* Flag that is set when switching off 'swapfile'.  It means that all blocks
 * are to be loaded into memory.  Shouldn't be global... */
EXTERN int	mf_dont_release INIT(= FALSE);	/* don't release blocks */

/*
 * List of files being edited (global argument list).  curwin->w_alist points
 * to this when the window is using the global argument list.
 */
EXTERN alist_T	global_alist;	/* global argument list */
EXTERN int	arg_had_last INIT(= FALSE); /* accessed last file in
					       global_alist */

EXTERN int	ru_col;		/* column for ruler */
#ifdef FEAT_STL_OPT
EXTERN int	ru_wid;		/* 'rulerfmt' width of ruler when non-zero */
#endif
EXTERN int	sc_col;		/* column for shown command */

#ifdef TEMPDIRNAMES
EXTERN char_u	*vim_tempdir INIT(= NULL); /* Name of Vim's own temp dir.
					      Ends in a slash. */
#endif

/*
 * When starting or exiting some things are done differently (e.g. screen
 * updating).
 */
EXTERN int	starting INIT(= NO_SCREEN);
				/* first NO_SCREEN, then NO_BUFFERS and then
				 * set to 0 when starting up finished */
EXTERN int	exiting INIT(= FALSE);
				/* TRUE when planning to exit Vim.  Might
				 * still keep on running if there is a changed
				 * buffer. */
EXTERN int	really_exiting INIT(= FALSE);
				/* TRUE when we are sure to exit, e.g., after
				 * a deadly signal */
/* volatile because it is used in signal handler deathtrap(). */
EXTERN volatile int full_screen INIT(= FALSE);
				/* TRUE when doing full-screen output
				 * otherwise only writing some messages */

EXTERN int	restricted INIT(= FALSE);
				/* TRUE when started as "rvim" */
EXTERN int	secure INIT(= FALSE);
				/* non-zero when only "safe" commands are
				 * allowed, e.g. when sourcing .exrc or .vimrc
				 * in current directory */

EXTERN int	textlock INIT(= 0);
				/* non-zero when changing text and jumping to
				 * another window or buffer is not allowed */

#ifdef FEAT_AUTOCMD
EXTERN int	curbuf_lock INIT(= 0);
				/* non-zero when the current buffer can't be
				 * changed.  Used for FileChangedRO. */
EXTERN int	allbuf_lock INIT(= 0);
				/* non-zero when no buffer name can be
				 * changed, no buffer can be deleted and
				 * current directory can't be changed.
				 * Used for SwapExists et al. */
#endif
#ifdef FEAT_EVAL
# define HAVE_SANDBOX
EXTERN int	sandbox INIT(= 0);
				/* Non-zero when evaluating an expression in a
				 * "sandbox".  Several things are not allowed
				 * then. */
#endif

EXTERN int	silent_mode INIT(= FALSE);
				/* set to TRUE when "-s" commandline argument
				 * used for ex */

#ifdef FEAT_VISUAL
EXTERN pos_T	VIsual;		/* start position of active Visual selection */
EXTERN int	VIsual_active INIT(= FALSE);
				/* whether Visual mode is active */
EXTERN int	VIsual_select INIT(= FALSE);
				/* whether Select mode is active */
EXTERN int	VIsual_reselect;
				/* whether to restart the selection after a
				 * Select mode mapping or menu */

EXTERN int	VIsual_mode INIT(= 'v');
				/* type of Visual mode */

EXTERN int	redo_VIsual_busy INIT(= FALSE);
				/* TRUE when redoing Visual */
#endif

#ifdef FEAT_MOUSE
/*
 * When pasting text with the middle mouse button in visual mode with
 * restart_edit set, remember where it started so we can set Insstart.
 */
EXTERN pos_T	where_paste_started;
#endif

/*
 * This flag is used to make auto-indent work right on lines where only a
 * <RETURN> or <ESC> is typed. It is set when an auto-indent is done, and
 * reset when any other editing is done on the line. If an <ESC> or <RETURN>
 * is received, and did_ai is TRUE, the line is truncated.
 */
EXTERN int     did_ai INIT(= FALSE);

/*
 * Column of first char after autoindent.  0 when no autoindent done.  Used
 * when 'backspace' is 0, to avoid backspacing over autoindent.
 */
EXTERN colnr_T	ai_col INIT(= 0);

#ifdef FEAT_COMMENTS
/*
 * This is a character which will end a start-middle-end comment when typed as
 * the first character on a new line.  It is taken from the last character of
 * the "end" comment leader when the COM_AUTO_END flag is given for that
 * comment end in 'comments'.  It is only valid when did_ai is TRUE.
 */
EXTERN int     end_comment_pending INIT(= NUL);
#endif

#ifdef FEAT_SCROLLBIND
/*
 * This flag is set after a ":syncbind" to let the check_scrollbind() function
 * know that it should not attempt to perform scrollbinding due to the scroll
 * that was a result of the ":syncbind." (Otherwise, check_scrollbind() will
 * undo some of the work done by ":syncbind.")  -ralston
 */
EXTERN int     did_syncbind INIT(= FALSE);
#endif

#ifdef FEAT_SMARTINDENT
/*
 * This flag is set when a smart indent has been performed. When the next typed
 * character is a '{' the inserted tab will be deleted again.
 */
EXTERN int	did_si INIT(= FALSE);

/*
 * This flag is set after an auto indent. If the next typed character is a '}'
 * one indent will be removed.
 */
EXTERN int	can_si INIT(= FALSE);

/*
 * This flag is set after an "O" command. If the next typed character is a '{'
 * one indent will be removed.
 */
EXTERN int	can_si_back INIT(= FALSE);
#endif

EXTERN pos_T	saved_cursor		/* w_cursor before formatting text. */
# ifdef DO_INIT
	= INIT_POS_T(0, 0, 0)
# endif
	;

/*
 * Stuff for insert mode.
 */
EXTERN pos_T	Insstart;		/* This is where the latest
					 * insert/append mode started. */
#ifdef FEAT_VREPLACE
/*
 * Stuff for VREPLACE mode.
 */
EXTERN int	orig_line_count INIT(= 0);  /* Line count when "gR" started */
EXTERN int	vr_lines_changed INIT(= 0); /* #Lines changed by "gR" so far */
#endif

#if defined(FEAT_X11) && defined(FEAT_XCLIPBOARD)
/* argument to SETJMP() for handling X IO errors */
EXTERN JMP_BUF x_jump_env;
#endif

#if defined(HAVE_SETJMP_H)
/*
 * Stuff for setjmp() and longjmp().
 * Used to protect areas where we could crash.
 */
EXTERN JMP_BUF lc_jump_env;	/* argument to SETJMP() */
# ifdef SIGHASARG
/* volatile because it is used in signal handlers. */
EXTERN volatile int lc_signal;	/* caught signal number, 0 when no was signal
				   caught; used for mch_libcall() */
# endif
/* volatile because it is used in signal handler deathtrap(). */
EXTERN volatile int lc_active INIT(= FALSE); /* TRUE when lc_jump_env is valid. */
#endif

#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT)
/*
 * These flags are set based upon 'fileencoding'.
 * Note that "enc_utf8" is also set for "unicode", because the characters are
 * internally stored as UTF-8 (to avoid trouble with NUL bytes).
 */
# define DBCS_JPN	932	/* japan */
# define DBCS_JPNU	9932	/* euc-jp */
# define DBCS_KOR	949	/* korea */
# define DBCS_KORU	9949	/* euc-kr */
# define DBCS_CHS	936	/* chinese */
# define DBCS_CHSU	9936	/* euc-cn */
# define DBCS_CHT	950	/* taiwan */
# define DBCS_CHTU	9950	/* euc-tw */
# define DBCS_2BYTE	1	/* 2byte- */
# define DBCS_DEBUG	-1
#endif

#ifdef FEAT_MBYTE
EXTERN int	enc_dbcs INIT(= 0);		/* One of DBCS_xxx values if
						   DBCS encoding */
EXTERN int	enc_unicode INIT(= 0);	/* 2: UCS-2 or UTF-16, 4: UCS-4 */
EXTERN int	enc_utf8 INIT(= FALSE);		/* UTF-8 encoded Unicode */
EXTERN int	enc_latin1like INIT(= TRUE);	/* 'encoding' is latin1 comp. */
# ifdef WIN3264
/* Codepage nr of 'encoding'.  Negative means it's not been set yet, zero
 * means 'encoding' is not a valid codepage. */
EXTERN int	enc_codepage INIT(= -1);
EXTERN int	enc_latin9 INIT(= FALSE);	/* 'encoding' is latin9 */
# endif
EXTERN int	has_mbyte INIT(= 0);		/* any multi-byte encoding */

#if defined(WIN3264) && defined(FEAT_MBYTE)
EXTERN int	wide_WindowProc INIT(= FALSE);	/* use wide WindowProc() */
#endif

/*
 * To speed up BYTELEN() we fill a table with the byte lengths whenever
 * enc_utf8 or enc_dbcs changes.
 */
EXTERN char	mb_bytelen_tab[256];

/* Variables that tell what conversion is used for keyboard input and display
 * output. */
EXTERN vimconv_T input_conv;			/* type of input conversion */
EXTERN vimconv_T output_conv;			/* type of output conversion */

/*
 * Function pointers, used to quickly get to the right function.  Each has
 * three possible values: latin_ (8-bit), utfc_ or utf_ (utf-8) and dbcs_
 * (DBCS).
 * The value is set in mb_init();
 */
/* length of char in bytes, including following composing chars */
EXTERN int (*mb_ptr2len) __ARGS((char_u *p)) INIT(= latin_ptr2len);
/* idem, with limit on string length */
EXTERN int (*mb_ptr2len_len) __ARGS((char_u *p, int size)) INIT(= latin_ptr2len_len);
/* byte length of char */
EXTERN int (*mb_char2len) __ARGS((int c)) INIT(= latin_char2len);
/* convert char to bytes, return the length */
EXTERN int (*mb_char2bytes) __ARGS((int c, char_u *buf)) INIT(= latin_char2bytes);
EXTERN int (*mb_ptr2cells) __ARGS((char_u *p)) INIT(= latin_ptr2cells);
EXTERN int (*mb_ptr2cells_len) __ARGS((char_u *p, int size)) INIT(= latin_ptr2cells_len);
EXTERN int (*mb_char2cells) __ARGS((int c)) INIT(= latin_char2cells);
EXTERN int (*mb_off2cells) __ARGS((unsigned off, unsigned max_off)) INIT(= latin_off2cells);
EXTERN int (*mb_ptr2char) __ARGS((char_u *p)) INIT(= latin_ptr2char);
EXTERN int (*mb_head_off) __ARGS((char_u *base, char_u *p)) INIT(= latin_head_off);

# if defined(USE_ICONV) && defined(DYNAMIC_ICONV)
/* Pointers to functions and variables to be loaded at runtime */
EXTERN size_t (*iconv) (iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
EXTERN iconv_t (*iconv_open) (const char *tocode, const char *fromcode);
EXTERN int (*iconv_close) (iconv_t cd);
EXTERN int (*iconvctl) (iconv_t cd, int request, void *argument);
EXTERN int* (*iconv_errno) (void);
# endif

#endif /* FEAT_MBYTE */

#ifdef FEAT_XIM
# ifdef FEAT_GUI_GTK
EXTERN GtkIMContext	*xic INIT(= NULL);
/*
 * Start and end column of the preedit area in virtual columns from the start
 * of the text line.  When there is no preedit area they are set to MAXCOL.
 * "preedit_end_col" is needed for coloring the preedited string.  Drawing the
 * color between "preedit_start_col" and curpos did not work, because some XIM
 * set the cursor position to the first char of the string.
 */
EXTERN colnr_T		preedit_start_col INIT(= MAXCOL);
EXTERN colnr_T		preedit_end_col INIT(= MAXCOL);

/* "xim_changed_while_preediting" is set when changed() can set the 'modified'
 * flag even while preediting. */
EXTERN int		xim_changed_while_preediting INIT(= FALSE);
# else
EXTERN XIC		xic INIT(= NULL);
# endif
# ifdef FEAT_GUI
EXTERN guicolor_T	xim_fg_color INIT(= INVALCOLOR);
EXTERN guicolor_T	xim_bg_color INIT(= INVALCOLOR);
# endif
#endif

#ifdef FEAT_HANGULIN
EXTERN int		composing_hangul INIT(= 0);
EXTERN char_u		composing_hangul_buffer[5];
#endif

/*
 * "State" is the main state of Vim.
 * There are other variables that modify the state:
 * "Visual_mode"    When State is NORMAL or INSERT.
 * "finish_op"	    When State is NORMAL, after typing the operator and before
 *		    typing the motion command.
 */
EXTERN int	State INIT(= NORMAL);	/* This is the current state of the
					 * command interpreter. */

EXTERN int	finish_op INIT(= FALSE);/* TRUE while an operator is pending */
EXTERN int	opcount INIT(= 0);	/* count for pending operator */

/*
 * ex mode (Q) state
 */
EXTERN int exmode_active INIT(= 0);	/* zero, EXMODE_NORMAL or EXMODE_VIM */
EXTERN int ex_no_reprint INIT(= FALSE); /* no need to print after z or p */

EXTERN int Recording INIT(= FALSE);	/* TRUE when recording into a reg. */
EXTERN int Exec_reg INIT(= FALSE);	/* TRUE when executing a register */

EXTERN int no_mapping INIT(= FALSE);	/* currently no mapping allowed */
EXTERN int no_zero_mapping INIT(= 0);	/* mapping zero not allowed */
EXTERN int allow_keys INIT(= FALSE);	/* allow key codes when no_mapping
					 * is set */
EXTERN int no_u_sync INIT(= 0);		/* Don't call u_sync() */

EXTERN int restart_edit INIT(= 0);	/* call edit when next cmd finished */
EXTERN int arrow_used;			/* Normally FALSE, set to TRUE after
					 * hitting cursor key in insert mode.
					 * Used by vgetorpeek() to decide when
					 * to call u_sync() */
EXTERN int	ins_at_eol INIT(= FALSE); /* put cursor after eol when
					   restarting edit after CTRL-O */
#ifdef FEAT_INS_EXPAND
EXTERN char_u	*edit_submode INIT(= NULL); /* msg for CTRL-X submode */
EXTERN char_u	*edit_submode_pre INIT(= NULL); /* prepended to edit_submode */
EXTERN char_u	*edit_submode_extra INIT(= NULL);/* appended to edit_submode */
EXTERN hlf_T	edit_submode_highl;	/* highl. method for extra info */
EXTERN int	ctrl_x_mode INIT(= 0);	/* Which Ctrl-X mode are we in? */
#endif

EXTERN int	no_abbr INIT(= TRUE);	/* TRUE when no abbreviations loaded */
#ifdef MSDOS
EXTERN int	beep_count INIT(= 0);	/* nr of beeps since last char typed */
#endif

#ifdef USE_EXE_NAME
EXTERN char_u	*exe_name;		/* the name of the executable */
#endif

#ifdef USE_ON_FLY_SCROLL
EXTERN int	dont_scroll INIT(= FALSE);/* don't use scrollbars when TRUE */
#endif
EXTERN int	mapped_ctrl_c INIT(= FALSE); /* CTRL-C is mapped */
EXTERN int	ctrl_c_interrupts INIT(= TRUE);	/* CTRL-C sets got_int */

EXTERN cmdmod_T	cmdmod;			/* Ex command modifiers */

EXTERN int	msg_silent INIT(= 0);	/* don't print messages */
EXTERN int	emsg_silent INIT(= 0);	/* don't print error messages */
EXTERN int	cmd_silent INIT(= FALSE); /* don't echo the command line */

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) \
	|| defined(FEAT_AUTOCMD)
# define HAS_SWAP_EXISTS_ACTION
EXTERN int	swap_exists_action INIT(= SEA_NONE);
					/* For dialog when swap file already
					 * exists. */
EXTERN int	swap_exists_did_quit INIT(= FALSE);
					/* Selected "quit" at the dialog. */
#endif

EXTERN char_u	*IObuff;		/* sprintf's are done in this buffer,
					   size is IOSIZE */
EXTERN char_u	*NameBuff;		/* file names are expanded in this
					 * buffer, size is MAXPATHL */
EXTERN char_u	msg_buf[MSG_BUF_LEN];	/* small buffer for messages */

/* When non-zero, postpone redrawing. */
EXTERN int	RedrawingDisabled INIT(= 0);

EXTERN int	readonlymode INIT(= FALSE); /* Set to TRUE for "view" */
EXTERN int	recoverymode INIT(= FALSE); /* Set to TRUE for "-r" option */

EXTERN struct buffheader stuffbuff	/* stuff buffer */
#ifdef DO_INIT
		    = {{NULL, {NUL}}, NULL, 0, 0}
#endif
		    ;
EXTERN typebuf_T typebuf		/* typeahead buffer */
#ifdef DO_INIT
		    = {NULL, NULL, 0, 0, 0, 0, 0, 0, 0}
#endif
		    ;
#ifdef FEAT_EX_EXTRA
EXTERN int	ex_normal_busy INIT(= 0); /* recursiveness of ex_normal() */
EXTERN int	ex_normal_lock INIT(= 0); /* forbid use of ex_normal() */
#endif
#ifdef FEAT_EVAL
EXTERN int	ignore_script INIT(= FALSE);  /* ignore script input */
#endif
EXTERN int	stop_insert_mode;	/* for ":stopinsert" and 'insertmode' */

EXTERN int	KeyTyped;		/* TRUE if user typed current char */
EXTERN int	KeyStuffed;		/* TRUE if current char from stuffbuf */
#ifdef USE_IM_CONTROL
EXTERN int	vgetc_im_active;	/* Input Method was active for last
					   character obtained from vgetc() */
#endif
EXTERN int	maptick INIT(= 0);	/* tick for each non-mapped char */

EXTERN char_u	chartab[256];		/* table used in charset.c; See
					   init_chartab() for explanation */

EXTERN int	must_redraw INIT(= 0);	    /* type of redraw necessary */
EXTERN int	skip_redraw INIT(= FALSE);  /* skip redraw once */
EXTERN int	do_redraw INIT(= FALSE);    /* extra redraw once */

EXTERN int	need_highlight_changed INIT(= TRUE);
EXTERN char_u	*use_viminfo INIT(= NULL);  /* name of viminfo file to use */

#define NSCRIPT 15
EXTERN FILE	*scriptin[NSCRIPT];	    /* streams to read script from */
EXTERN int	curscript INIT(= 0);	    /* index in scriptin[] */
EXTERN FILE	*scriptout  INIT(= NULL);   /* stream to write script to */
EXTERN int	read_cmd_fd INIT(= 0);	    /* fd to read commands from */

/* volatile because it is used in signal handler catch_sigint(). */
EXTERN volatile int got_int INIT(= FALSE);    /* set to TRUE when interrupt
						signal occurred */
#ifdef USE_TERM_CONSOLE
EXTERN int	term_console INIT(= FALSE); /* set to TRUE when console used */
#endif
EXTERN int	termcap_active INIT(= FALSE);	/* set by starttermcap() */
EXTERN int	cur_tmode INIT(= TMODE_COOK);	/* input terminal mode */
EXTERN int	bangredo INIT(= FALSE);	    /* set to TRUE with ! command */
EXTERN int	searchcmdlen;		    /* length of previous search cmd */
#ifdef FEAT_SYN_HL
EXTERN int	reg_do_extmatch INIT(= 0);  /* Used when compiling regexp:
					     * REX_SET to allow \z\(...\),
					     * REX_USE to allow \z\1 et al. */
EXTERN reg_extmatch_T *re_extmatch_in INIT(= NULL); /* Used by vim_regexec():
					     * strings for \z\1...\z\9 */
EXTERN reg_extmatch_T *re_extmatch_out INIT(= NULL); /* Set by vim_regexec()
					     * to store \z\(...\) matches */
#endif

EXTERN int	did_outofmem_msg INIT(= FALSE);
					    /* set after out of memory msg */
EXTERN int	did_swapwrite_msg INIT(= FALSE);
					    /* set after swap write error msg */
EXTERN int	undo_off INIT(= FALSE);	    /* undo switched off for now */
EXTERN int	global_busy INIT(= 0);	    /* set when :global is executing */
EXTERN int	listcmd_busy INIT(= FALSE); /* set when :argdo, :windo or
					       :bufdo is executing */
EXTERN int	need_start_insertmode INIT(= FALSE);
					    /* start insert mode soon */
EXTERN char_u	*last_cmdline INIT(= NULL); /* last command line (for ":) */
EXTERN char_u	*repeat_cmdline INIT(= NULL); /* command line for "." */
#ifdef FEAT_CMDHIST
EXTERN char_u	*new_last_cmdline INIT(= NULL);	/* new value for last_cmdline */
#endif
#ifdef FEAT_AUTOCMD
EXTERN char_u	*autocmd_fname INIT(= NULL); /* fname for <afile> on cmdline */
EXTERN int	autocmd_fname_full;	     /* autocmd_fname is full path */
EXTERN int	autocmd_bufnr INIT(= 0);     /* fnum for <abuf> on cmdline */
EXTERN char_u	*autocmd_match INIT(= NULL); /* name for <amatch> on cmdline */
EXTERN int	did_cursorhold INIT(= FALSE); /* set when CursorHold t'gerd */
EXTERN pos_T	last_cursormoved	    /* for CursorMoved event */
# ifdef DO_INIT
			= INIT_POS_T(0, 0, 0)
# endif
			;
#endif

EXTERN linenr_T	write_no_eol_lnum INIT(= 0); /* non-zero lnum when last line
						of next binary write should
						not have an end-of-line */

#ifdef FEAT_WINDOWS
EXTERN int	postponed_split INIT(= 0);  /* for CTRL-W CTRL-] command */
EXTERN int	postponed_split_flags INIT(= 0);  /* args for win_split() */
EXTERN int	postponed_split_tab INIT(= 0);  /* cmdmod.tab */
# ifdef FEAT_QUICKFIX
EXTERN int	g_do_tagpreview INIT(= 0);  /* for tag preview commands:
					       height of preview window */
# endif
#endif
EXTERN int	replace_offset INIT(= 0);   /* offset for replace_push() */

EXTERN char_u	*escape_chars INIT(= (char_u *)" \t\\\"|");
					    /* need backslash in cmd line */

EXTERN int	keep_help_flag INIT(= FALSE); /* doing :ta from help file */

/*
 * When a string option is NULL (which only happens in out-of-memory
 * situations), it is set to empty_option, to avoid having to check for NULL
 * everywhere.
 */
EXTERN char_u	*empty_option INIT(= (char_u *)"");

EXTERN int  redir_off INIT(= FALSE);	/* no redirection for a moment */
EXTERN FILE *redir_fd INIT(= NULL);	/* message redirection file */
#ifdef FEAT_EVAL
EXTERN int  redir_reg INIT(= 0);	/* message redirection register */
EXTERN int  redir_vname INIT(= 0);	/* message redirection variable */
#endif

#ifdef FEAT_LANGMAP
EXTERN char_u	langmap_mapchar[256];	/* mapping for language keys */
#endif

#ifdef FEAT_WILDMENU
EXTERN int  save_p_ls INIT(= -1);	/* Save 'laststatus' setting */
EXTERN int  save_p_wmh INIT(= -1);	/* Save 'winminheight' setting */
EXTERN int  wild_menu_showing INIT(= 0);
#define WM_SHOWN	1		/* wildmenu showing */
#define WM_SCROLLED	2		/* wildmenu showing with scroll */
#endif

#ifdef MSWIN
EXTERN char_u	toupper_tab[256];	/* table for toupper() */
EXTERN char_u	tolower_tab[256];	/* table for tolower() */
#endif

#ifdef FEAT_LINEBREAK
EXTERN char	breakat_flags[256];	/* which characters are in 'breakat' */
#endif

/* these are in version.c */
extern char *Version;
#if defined(HAVE_DATE_TIME) && defined(VMS) && defined(VAXC)
extern char longVersion[];
#else
extern char *longVersion;
#endif

/*
 * Some file names are stored in pathdef.c, which is generated from the
 * Makefile to make their value depend on the Makefile.
 */
#ifdef HAVE_PATHDEF
extern char_u *default_vim_dir;
extern char_u *default_vimruntime_dir;
extern char_u *all_cflags;
extern char_u *all_lflags;
# ifdef VMS
extern char_u *compiler_version;
extern char_u *compiled_arch;
# endif
extern char_u *compiled_user;
extern char_u *compiled_sys;
#endif

/* When a window has a local directory, the absolute path of the global
 * current directory is stored here (in allocated memory).  If the current
 * directory is not a local directory, globaldir is NULL. */
EXTERN char_u	*globaldir INIT(= NULL);

/* Characters from 'listchars' option */
EXTERN int	lcs_eol INIT(= '$');
EXTERN int	lcs_ext INIT(= NUL);
EXTERN int	lcs_prec INIT(= NUL);
EXTERN int	lcs_nbsp INIT(= NUL);
EXTERN int	lcs_tab1 INIT(= NUL);
EXTERN int	lcs_tab2 INIT(= NUL);
EXTERN int	lcs_trail INIT(= NUL);
#ifdef FEAT_CONCEAL
EXTERN int	lcs_conceal INIT(= '-');
#endif

#if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT) \
	|| defined(FEAT_FOLDING)
/* Characters from 'fillchars' option */
EXTERN int	fill_stl INIT(= ' ');
EXTERN int	fill_stlnc INIT(= ' ');
#endif
#if defined(FEAT_WINDOWS) || defined(FEAT_FOLDING)
EXTERN int	fill_vert INIT(= ' ');
EXTERN int	fill_fold INIT(= '-');
EXTERN int	fill_diff INIT(= '-');
#endif

#ifdef FEAT_VISUAL
/* Whether 'keymodel' contains "stopsel" and "startsel". */
EXTERN int	km_stopsel INIT(= FALSE);
EXTERN int	km_startsel INIT(= FALSE);
#endif

#ifdef FEAT_CMDWIN
EXTERN int	cedit_key INIT(= -1);	/* key value of 'cedit' option */
EXTERN int	cmdwin_type INIT(= 0);	/* type of cmdline window or 0 */
EXTERN int	cmdwin_result INIT(= 0); /* result of cmdline window or 0 */
#endif

EXTERN char_u no_lines_msg[]	INIT(= N_("--No lines in buffer--"));

/*
 * When ":global" is used to number of substitutions and changed lines is
 * accumulated until it's finished.
 * Also used for ":spellrepall".
 */
EXTERN long	sub_nsubs;	/* total number of substitutions */
EXTERN linenr_T	sub_nlines;	/* total number of lines changed */

/* table to store parsed 'wildmode' */
EXTERN char_u	wim_flags[4];

#if defined(FEAT_TITLE) && defined(FEAT_STL_OPT)
/* whether titlestring and iconstring contains statusline syntax */
# define STL_IN_ICON	1
# define STL_IN_TITLE	2
EXTERN int      stl_syntax INIT(= 0);
#endif

#ifdef FEAT_SEARCH_EXTRA
/* don't use 'hlsearch' temporarily */
EXTERN int	no_hlsearch INIT(= FALSE);
#endif

#if defined(FEAT_BEVAL) && !defined(NO_X11_INCLUDES)
EXTERN BalloonEval	*balloonEval INIT(= NULL);
# if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
EXTERN int bevalServers INIT(= 0);
#  define BEVAL_NETBEANS		0x01
#  define BEVAL_WORKSHOP		0x02
# endif
#endif

#ifdef CURSOR_SHAPE
/* the table is in misc2.c, because of initializations */
extern cursorentry_T shape_table[SHAPE_IDX_COUNT];
#endif

#ifdef FEAT_PRINTER
/*
 * Printer stuff shared between hardcopy.c and machine-specific printing code.
 */
# define OPT_PRINT_TOP		0
# define OPT_PRINT_BOT		1
# define OPT_PRINT_LEFT		2
# define OPT_PRINT_RIGHT	3
# define OPT_PRINT_HEADERHEIGHT	4
# define OPT_PRINT_SYNTAX	5
# define OPT_PRINT_NUMBER	6
# define OPT_PRINT_WRAP		7
# define OPT_PRINT_DUPLEX	8
# define OPT_PRINT_PORTRAIT	9
# define OPT_PRINT_PAPER	10
# define OPT_PRINT_COLLATE	11
# define OPT_PRINT_JOBSPLIT	12
# define OPT_PRINT_FORMFEED	13

# define OPT_PRINT_NUM_OPTIONS	14

EXTERN option_table_T printer_opts[OPT_PRINT_NUM_OPTIONS]
# ifdef DO_INIT
 =
{
    {"top",	TRUE, 0, NULL, 0, FALSE},
    {"bottom",	TRUE, 0, NULL, 0, FALSE},
    {"left",	TRUE, 0, NULL, 0, FALSE},
    {"right",	TRUE, 0, NULL, 0, FALSE},
    {"header",	TRUE, 0, NULL, 0, FALSE},
    {"syntax",	FALSE, 0, NULL, 0, FALSE},
    {"number",	FALSE, 0, NULL, 0, FALSE},
    {"wrap",	FALSE, 0, NULL, 0, FALSE},
    {"duplex",	FALSE, 0, NULL, 0, FALSE},
    {"portrait", FALSE, 0, NULL, 0, FALSE},
    {"paper",	FALSE, 0, NULL, 0, FALSE},
    {"collate",	FALSE, 0, NULL, 0, FALSE},
    {"jobsplit", FALSE, 0, NULL, 0, FALSE},
    {"formfeed", FALSE, 0, NULL, 0, FALSE},
}
# endif
;

/* For prt_get_unit(). */
# define PRT_UNIT_NONE	-1
# define PRT_UNIT_PERC	0
# define PRT_UNIT_INCH	1
# define PRT_UNIT_MM	2
# define PRT_UNIT_POINT	3
# define PRT_UNIT_NAMES {"pc", "in", "mm", "pt"}
#endif

#if (defined(FEAT_PRINTER) && defined(FEAT_STL_OPT)) \
	    || defined(FEAT_GUI_TABLINE)
/* Page number used for %N in 'pageheader' and 'guitablabel'. */
EXTERN linenr_T printer_page_num;
#endif

#ifdef FEAT_XCLIPBOARD
EXTERN char	*xterm_display INIT(= NULL);	/* xterm display name; points
						   into argv[] */
EXTERN Display	*xterm_dpy INIT(= NULL);	/* xterm display pointer */
#endif
#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11)
EXTERN XtAppContext app_context INIT(= (XtAppContext)NULL);
#endif

#ifdef FEAT_GUI_GTK
EXTERN guint32	gtk_socket_id INIT(= 0);
EXTERN int	echo_wid_arg INIT(= FALSE);	/* --echo-wid argument */
#endif

#ifdef FEAT_GUI_W32
/*
 * The value of the --windowid argument.
 * For embedding gvim inside another application.
 */
EXTERN long_u	win_socket_id INIT(= 0);
#endif

#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL)
EXTERN int	typebuf_was_filled INIT(= FALSE); /* received text from client
						     or from feedkeys() */
#endif

#ifdef FEAT_CLIENTSERVER
EXTERN char_u	*serverName INIT(= NULL);	/* name of the server */
# ifdef FEAT_X11
EXTERN Window	commWindow INIT(= None);
EXTERN Window	clientWindow INIT(= None);
EXTERN Atom	commProperty INIT(= None);
EXTERN char_u	*serverDelayedStartName INIT(= NULL);
# else
# ifdef PROTO
typedef int HWND;
# endif
EXTERN HWND	clientWindow INIT(= 0);
# endif
#endif

#if defined(UNIX) || defined(VMS)
EXTERN int	term_is_xterm INIT(= FALSE);	/* xterm-like 'term' */
#endif

#ifdef BACKSLASH_IN_FILENAME
EXTERN char	psepc INIT(= '\\');	/* normal path separator character */
EXTERN char	psepcN INIT(= '/');	/* abnormal path separator character */
EXTERN char	pseps[2]		/* normal path separator string */
# ifdef DO_INIT
			= {'\\', 0}
# endif
			;
#endif

#ifdef FEAT_VIRTUALEDIT
/* Set to TRUE when an operator is being executed with virtual editing, MAYBE
 * when no operator is being executed, FALSE otherwise. */
EXTERN int	virtual_op INIT(= MAYBE);
#endif

#ifdef FEAT_SYN_HL
/* Display tick, incremented for each call to update_screen() */
EXTERN disptick_T	display_tick INIT(= 0);
#endif

#ifdef FEAT_SPELL
/* Line in which spell checking wasn't highlighted because it touched the
 * cursor position in Insert mode. */
EXTERN linenr_T		spell_redraw_lnum INIT(= 0);
#endif

#ifdef FEAT_CONCEAL
/* Set when the cursor line needs to be redrawn. */
EXTERN int		need_cursor_line_redraw INIT(= FALSE);
#endif

#ifdef ALT_X_INPUT
/* we need to be able to go into the dispatch loop while processing a command
 * received via alternate input. However, we don't want to process another
 * command until the first is completed.
 */
EXTERN int	suppress_alternate_input INIT(= FALSE);
#endif

#ifdef USE_MCH_ERRMSG
/* Grow array to collect error messages in until they can be displayed. */
EXTERN garray_T error_ga
# ifdef DO_INIT
	= {0, 0, 0, 0, NULL}
# endif
	;
#endif

#ifdef FEAT_NETBEANS_INTG
EXTERN char *netbeansArg INIT(= NULL);	/* the -nb[:host:port:passwd] arg */
EXTERN int netbeansFireChanges INIT(= 1); /* send buffer changes if != 0 */
EXTERN int netbeansForcedQuit INIT(= 0);/* don't write modified files */
EXTERN int netbeansReadFile INIT(= 1);	/* OK to read from disk if != 0 */
EXTERN int netbeansSuppressNoLines INIT(= 0); /* skip "No lines in buffer" */
#endif

/*
 * The error messages that can be shared are included here.
 * Excluded are errors that are only used once and debugging messages.
 */
EXTERN char_u e_abort[]		INIT(= N_("E470: Command aborted"));
EXTERN char_u e_argreq[]	INIT(= N_("E471: Argument required"));
EXTERN char_u e_backslash[]	INIT(= N_("E10: \\ should be followed by /, ? or &"));
#ifdef FEAT_CMDWIN
EXTERN char_u e_cmdwin[]	INIT(= N_("E11: Invalid in command-line window; <CR> executes, CTRL-C quits"));
#endif
EXTERN char_u e_curdir[]	INIT(= N_("E12: Command not allowed from exrc/vimrc in current dir or tag search"));
#ifdef FEAT_EVAL
EXTERN char_u e_endif[]		INIT(= N_("E171: Missing :endif"));
EXTERN char_u e_endtry[]	INIT(= N_("E600: Missing :endtry"));
EXTERN char_u e_endwhile[]	INIT(= N_("E170: Missing :endwhile"));
EXTERN char_u e_endfor[]	INIT(= N_("E170: Missing :endfor"));
EXTERN char_u e_while[]		INIT(= N_("E588: :endwhile without :while"));
EXTERN char_u e_for[]		INIT(= N_("E588: :endfor without :for"));
#endif
EXTERN char_u e_exists[]	INIT(= N_("E13: File exists (add ! to override)"));
EXTERN char_u e_failed[]	INIT(= N_("E472: Command failed"));
#if defined(FEAT_GUI) && defined(FEAT_XFONTSET)
EXTERN char_u e_fontset[]	INIT(= N_("E234: Unknown fontset: %s"));
#endif
#if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) || defined(MACOS) \
	|| defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MSWIN)
EXTERN char_u e_font[]		INIT(= N_("E235: Unknown font: %s"));
#endif
#if defined(FEAT_GUI_X11) && !defined(FEAT_GUI_GTK)
EXTERN char_u e_fontwidth[]	INIT(= N_("E236: Font \"%s\" is not fixed-width"));
#endif
EXTERN char_u e_internal[]	INIT(= N_("E473: Internal error"));
EXTERN char_u e_interr[]	INIT(= N_("Interrupted"));
EXTERN char_u e_invaddr[]	INIT(= N_("E14: Invalid address"));
EXTERN char_u e_invarg[]	INIT(= N_("E474: Invalid argument"));
EXTERN char_u e_invarg2[]	INIT(= N_("E475: Invalid argument: %s"));
#ifdef FEAT_EVAL
EXTERN char_u e_invexpr2[]	INIT(= N_("E15: Invalid expression: %s"));
#endif
EXTERN char_u e_invrange[]	INIT(= N_("E16: Invalid range"));
EXTERN char_u e_invcmd[]	INIT(= N_("E476: Invalid command"));
#if defined(UNIX) || defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
EXTERN char_u e_isadir2[]	INIT(= N_("E17: \"%s\" is a directory"));
#endif
#ifdef FEAT_LIBCALL
EXTERN char_u e_libcall[]	INIT(= N_("E364: Library call failed for \"%s()\""));
#endif
#if defined(DYNAMIC_PERL) \
	|| defined(DYNAMIC_PYTHON) || defined(DYNAMIC_PYTHON3) \
	|| defined(DYNAMIC_RUBY) \
	|| defined(DYNAMIC_TCL) \
	|| defined(DYNAMIC_ICONV) \
	|| defined(DYNAMIC_GETTEXT) \
	|| defined(DYNAMIC_MZSCHEME) \
	|| defined(DYNAMIC_LUA)
EXTERN char_u e_loadlib[]	INIT(= N_("E370: Could not load library %s"));
EXTERN char_u e_loadfunc[]	INIT(= N_("E448: Could not load library function %s"));
#endif
EXTERN char_u e_markinval[]	INIT(= N_("E19: Mark has invalid line number"));
EXTERN char_u e_marknotset[]	INIT(= N_("E20: Mark not set"));
EXTERN char_u e_modifiable[]	INIT(= N_("E21: Cannot make changes, 'modifiable' is off"));
EXTERN char_u e_nesting[]	INIT(= N_("E22: Scripts nested too deep"));
EXTERN char_u e_noalt[]		INIT(= N_("E23: No alternate file"));
EXTERN char_u e_noabbr[]	INIT(= N_("E24: No such abbreviation"));
EXTERN char_u e_nobang[]	INIT(= N_("E477: No ! allowed"));
#ifndef FEAT_GUI
EXTERN char_u e_nogvim[]	INIT(= N_("E25: GUI cannot be used: Not enabled at compile time"));
#endif
#ifndef FEAT_RIGHTLEFT
EXTERN char_u e_nohebrew[]	INIT(= N_("E26: Hebrew cannot be used: Not enabled at compile time\n"));
#endif
#ifndef FEAT_FKMAP
EXTERN char_u e_nofarsi[]	INIT(= N_("E27: Farsi cannot be used: Not enabled at compile time\n"));
#endif
#ifndef FEAT_ARABIC
EXTERN char_u e_noarabic[]	INIT(= N_("E800: Arabic cannot be used: Not enabled at compile time\n"));
#endif
#if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_SYN_HL)
EXTERN char_u e_nogroup[]	INIT(= N_("E28: No such highlight group name: %s"));
#endif
EXTERN char_u e_noinstext[]	INIT(= N_("E29: No inserted text yet"));
EXTERN char_u e_nolastcmd[]	INIT(= N_("E30: No previous command line"));
EXTERN char_u e_nomap[]		INIT(= N_("E31: No such mapping"));
EXTERN char_u e_nomatch[]	INIT(= N_("E479: No match"));
EXTERN char_u e_nomatch2[]	INIT(= N_("E480: No match: %s"));
EXTERN char_u e_noname[]	INIT(= N_("E32: No file name"));
EXTERN char_u e_nopresub[]	INIT(= N_("E33: No previous substitute regular expression"));
EXTERN char_u e_noprev[]	INIT(= N_("E34: No previous command"));
EXTERN char_u e_noprevre[]	INIT(= N_("E35: No previous regular expression"));
EXTERN char_u e_norange[]	INIT(= N_("E481: No range allowed"));
#ifdef FEAT_WINDOWS
EXTERN char_u e_noroom[]	INIT(= N_("E36: Not enough room"));
#endif
#ifdef FEAT_CLIENTSERVER
EXTERN char_u e_noserver[]	INIT(= N_("E247: no registered server named \"%s\""));
#endif
EXTERN char_u e_notcreate[]	INIT(= N_("E482: Can't create file %s"));
EXTERN char_u e_notmp[]		INIT(= N_("E483: Can't get temp file name"));
EXTERN char_u e_notopen[]	INIT(= N_("E484: Can't open file %s"));
EXTERN char_u e_notread[]	INIT(= N_("E485: Can't read file %s"));
EXTERN char_u e_nowrtmsg[]	INIT(= N_("E37: No write since last change (add ! to override)"));
EXTERN char_u e_null[]		INIT(= N_("E38: Null argument"));
#ifdef FEAT_DIGRAPHS
EXTERN char_u e_number_exp[]	INIT(= N_("E39: Number expected"));
#endif
#ifdef FEAT_QUICKFIX
EXTERN char_u e_openerrf[]	INIT(= N_("E40: Can't open errorfile %s"));
#endif
#if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11)
EXTERN char_u e_opendisp[]	INIT(= N_("E233: cannot open display"));
#endif
EXTERN char_u e_outofmem[]	INIT(= N_("E41: Out of memory!"));
#ifdef FEAT_INS_EXPAND
EXTERN char_u e_patnotf[]	INIT(= N_("Pattern not found"));
#endif
EXTERN char_u e_patnotf2[]	INIT(= N_("E486: Pattern not found: %s"));
EXTERN char_u e_positive[]	INIT(= N_("E487: Argument must be positive"));
#if defined(UNIX) || defined(FEAT_SESSION)
EXTERN char_u e_prev_dir[]	INIT(= N_("E459: Cannot go back to previous directory"));
#endif

#ifdef FEAT_QUICKFIX
EXTERN char_u e_quickfix[]	INIT(= N_("E42: No Errors"));
EXTERN char_u e_loclist[]	INIT(= N_("E776: No location list"));
#endif
EXTERN char_u e_re_damg[]	INIT(= N_("E43: Damaged match string"));
EXTERN char_u e_re_corr[]	INIT(= N_("E44: Corrupted regexp program"));
EXTERN char_u e_readonly[]	INIT(= N_("E45: 'readonly' option is set (add ! to override)"));
#ifdef FEAT_EVAL
EXTERN char_u e_readonlyvar[]	INIT(= N_("E46: Cannot change read-only variable \"%s\""));
EXTERN char_u e_readonlysbx[]	INIT(= N_("E794: Cannot set variable in the sandbox: \"%s\""));
#endif
#ifdef FEAT_QUICKFIX
EXTERN char_u e_readerrf[]	INIT(= N_("E47: Error while reading errorfile"));
#endif
#ifdef HAVE_SANDBOX
EXTERN char_u e_sandbox[]	INIT(= N_("E48: Not allowed in sandbox"));
#endif
EXTERN char_u e_secure[]	INIT(= N_("E523: Not allowed here"));
#if defined(AMIGA) || defined(MACOS) || defined(MSWIN) || defined(RISCOS) \
	|| defined(UNIX) || defined(VMS) || defined(OS2)
EXTERN char_u e_screenmode[]	INIT(= N_("E359: Screen mode setting not supported"));
#endif
EXTERN char_u e_scroll[]	INIT(= N_("E49: Invalid scroll size"));
EXTERN char_u e_shellempty[]	INIT(= N_("E91: 'shell' option is empty"));
#if defined(FEAT_SIGN_ICONS) && !defined(FEAT_GUI_GTK)
EXTERN char_u e_signdata[]	INIT(= N_("E255: Couldn't read in sign data!"));
#endif
EXTERN char_u e_swapclose[]	INIT(= N_("E72: Close error on swap file"));
EXTERN char_u e_tagstack[]	INIT(= N_("E73: tag stack empty"));
EXTERN char_u e_toocompl[]	INIT(= N_("E74: Command too complex"));
EXTERN char_u e_longname[]	INIT(= N_("E75: Name too long"));
EXTERN char_u e_toomsbra[]	INIT(= N_("E76: Too many ["));
EXTERN char_u e_toomany[]	INIT(= N_("E77: Too many file names"));
EXTERN char_u e_trailing[]	INIT(= N_("E488: Trailing characters"));
EXTERN char_u e_umark[]		INIT(= N_("E78: Unknown mark"));
EXTERN char_u e_wildexpand[]	INIT(= N_("E79: Cannot expand wildcards"));
#ifdef FEAT_WINDOWS
EXTERN char_u e_winheight[]	INIT(= N_("E591: 'winheight' cannot be smaller than 'winminheight'"));
# ifdef FEAT_VERTSPLIT
EXTERN char_u e_winwidth[]	INIT(= N_("E592: 'winwidth' cannot be smaller than 'winminwidth'"));
# endif
#endif
EXTERN char_u e_write[]		INIT(= N_("E80: Error while writing"));
EXTERN char_u e_zerocount[]	INIT(= N_("Zero count"));
#ifdef FEAT_EVAL
EXTERN char_u e_usingsid[]	INIT(= N_("E81: Using <SID> not in a script context"));
#endif
#ifdef FEAT_CLIENTSERVER
EXTERN char_u e_invexprmsg[]	INIT(= N_("E449: Invalid expression received"));
#endif
#ifdef FEAT_NETBEANS_INTG
EXTERN char_u e_guarded[]	INIT(= N_("E463: Region is guarded, cannot modify"));
EXTERN char_u e_nbreadonly[]	INIT(= N_("E744: NetBeans does not allow changes in read-only files"));
#endif
EXTERN char_u e_intern2[]	INIT(= N_("E685: Internal error: %s"));
EXTERN char_u e_maxmempat[]	INIT(= N_("E363: pattern uses more memory than 'maxmempattern'"));
EXTERN char_u e_emptybuf[]	INIT(= N_("E749: empty buffer"));

#ifdef FEAT_EX_EXTRA
EXTERN char_u e_invalpat[]	INIT(= N_("E682: Invalid search pattern or delimiter"));
#endif
EXTERN char_u e_bufloaded[]	INIT(= N_("E139: File is loaded in another buffer"));
#if defined(FEAT_SYN_HL) || \
	(defined(FEAT_INS_EXPAND) && defined(FEAT_COMPL_FUNC))
EXTERN char_u e_notset[]	INIT(= N_("E764: Option '%s' is not set"));
#endif

#ifdef MACOS_X_UNIX
EXTERN short disallow_gui	INIT(= FALSE);
#endif

EXTERN char top_bot_msg[] INIT(= N_("search hit TOP, continuing at BOTTOM"));
EXTERN char bot_top_msg[] INIT(= N_("search hit BOTTOM, continuing at TOP"));

#ifdef FEAT_CRYPT
EXTERN char need_key_msg[] INIT(= N_("Need encryption key for \"%s\""));
#endif

/*
 * Comms. with the session manager (XSMP)
 */
#ifdef USE_XSMP
EXTERN int xsmp_icefd INIT(= -1);   /* The actual connection */
#endif

/* For undo we need to know the lowest time possible. */
EXTERN time_t starttime;

#ifdef STARTUPTIME
EXTERN FILE *time_fd INIT(= NULL);  /* where to write startup timing */
#endif

/*
 * Some compilers warn for not using a return value, but in some situations we
 * can't do anything useful with the value.  Assign to this variable to avoid
 * the warning.
 */
EXTERN int ignored;
EXTERN char *ignoredp;

/*
 * Optional Farsi support.  Include it here, so EXTERN and INIT are defined.
 */
#ifdef FEAT_FKMAP
# include "farsi.h"
#endif

/*
 * Optional Arabic support. Include it here, so EXTERN and INIT are defined.
 */
#ifdef FEAT_ARABIC
# include "arabic.h"
#endif