src/vim.h

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * 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.
 */

#ifndef VIM__H
# define VIM__H

#include "protodef.h"

// _WIN32 is defined as 1 when the compilation target is 32-bit or 64-bit.
// Note: If you want to check for 64-bit use the _WIN64 macro.
#if defined(WIN32) || defined(_WIN32)
# define MSWIN
#endif

// use fastcall for Borland, when compiling for MS-Windows
#if defined(__BORLANDC__) && defined(MSWIN) && !defined(DEBUG)
#if defined(FEAT_PERL) || \
    defined(FEAT_PYTHON) || \
    defined(FEAT_PYTHON3) || \
    defined(FEAT_RUBY) || \
    defined(FEAT_TCL) || \
    defined(FEAT_MZSCHEME) || \
    defined(DYNAMIC_GETTEXT) || \
    defined(DYNAMIC_ICONV) || \
    defined(DYNAMIC_IME) || \
    defined(XPM)
  #pragma option -pc
# else
  #pragma option -pr
# endif
#endif

#ifdef MSWIN
# include "vimio.h"
#endif

/* ============ the header file puzzle (ca. 50-100 pieces) ========= */

#ifdef HAVE_CONFIG_H	/* GNU autoconf (or something else) was here */
# include "auto/config.h"
# define HAVE_PATHDEF

/*
 * Check if configure correctly managed to find sizeof(int).  If this failed,
 * it becomes zero.  This is likely a problem of not being able to run the
 * test program.  Other items from configure may also be wrong then!
 */
# if (VIM_SIZEOF_INT == 0)
    Error: configure did not run properly.  Check auto/config.log.
# endif

// for INT_MAX, LONG_MAX et al.
#include <limits.h>

/*
 * Cygwin may have fchdir() in a newer release, but in most versions it
 * doesn't work well and avoiding it keeps the binary backward compatible.
 */
# if defined(__CYGWIN32__) && defined(HAVE_FCHDIR)
#  undef HAVE_FCHDIR
# endif

/* We may need to define the uint32_t on non-Unix system, but using the same
 * identifier causes conflicts.  Therefore use UINT32_T. */
# define UINT32_TYPEDEF uint32_t
#endif

#if !defined(UINT32_TYPEDEF)
# if defined(uint32_t)  /* this doesn't catch typedefs, unfortunately */
#  define UINT32_TYPEDEF uint32_t
# else
  /* Fall back to assuming unsigned int is 32 bit.  If this is wrong then the
   * test in blowfish.c will fail. */
#  define UINT32_TYPEDEF unsigned int
# endif
#endif

/* user ID of root is usually zero, but not for everybody */
#ifdef __TANDEM
# ifndef _TANDEM_SOURCE
#  define _TANDEM_SOURCE
# endif
# include <floss.h>
# define ROOT_UID 65535
# define OLDXAW
# if (_TANDEM_ARCH_ == 2 && __H_Series_RVU >= 621)
#  define SA_ONSTACK_COMPATIBILITY
# endif
#else
# define ROOT_UID 0
#endif

/*
 * MACOS_X	    compiling for Mac OS X
 * MACOS_X_DARWIN   integrating the darwin feature into MACOS_X
 */
#if defined(MACOS_X_DARWIN) && !defined(MACOS_X)
# define MACOS_X
#endif
/* Unless made through the Makefile enforce GUI on Mac */
#if defined(MACOS_X) && !defined(HAVE_CONFIG_H)
# define UNIX
# define FEAT_GUI_MAC
#endif

#if defined(FEAT_GUI_MOTIF) \
    || defined(FEAT_GUI_GTK) \
    || defined(FEAT_GUI_ATHENA) \
    || defined(FEAT_GUI_MAC) \
    || defined(FEAT_GUI_MSWIN) \
    || defined(FEAT_GUI_PHOTON)
# define FEAT_GUI_ENABLED  /* also defined with NO_X11_INCLUDES */
# if !defined(FEAT_GUI) && !defined(NO_X11_INCLUDES)
#  define FEAT_GUI
# endif
#endif

/* Check support for rendering options */
#ifdef FEAT_GUI
# if defined(FEAT_DIRECTX)
#  define FEAT_RENDER_OPTIONS
# endif
#endif

/* Visual Studio 2005 has 'deprecated' many of the standard CRT functions */
#if _MSC_VER >= 1400
# define _CRT_SECURE_NO_DEPRECATE
# define _CRT_NONSTDC_NO_DEPRECATE
#endif

/*
 * VIM_SIZEOF_INT is used in feature.h, and the system-specific included files
 * need items from feature.h.  Therefore define VIM_SIZEOF_INT here.
 */
#ifdef MSWIN
# define VIM_SIZEOF_INT 4
#endif

#ifdef AMIGA
  /* Be conservative about sizeof(int). It could be 4 too. */
# ifndef FEAT_GUI_GTK	/* avoid problems when generating prototypes */
#  ifdef __GNUC__
#   define VIM_SIZEOF_INT	4
#  else
#   define VIM_SIZEOF_INT	2
#  endif
# endif
#endif
#if defined(MACOS_X) && !defined(HAVE_CONFIG_H)
#  define VIM_SIZEOF_INT __SIZEOF_INT__
#endif

#if VIM_SIZEOF_INT < 4 && !defined(PROTO)
    Error: Vim only works with 32 bit int or larger
#endif

/*
 * #defines for optionals and features
 * Also defines FEAT_TINY, FEAT_SMALL, etc. when FEAT_HUGE is defined.
 */
#include "feature.h"

#if defined(MACOS_X_DARWIN)
# if defined(FEAT_SMALL) && !defined(FEAT_CLIPBOARD)
#  define FEAT_CLIPBOARD
# endif
# if defined(FEAT_SMALL) && !defined(FEAT_MOUSE)
#  define FEAT_MOUSE
# endif
#endif

/* +x11 is only enabled when it's both available and wanted. */
#if defined(HAVE_X11) && defined(WANT_X11)
# define FEAT_X11
#endif

#ifdef NO_X11_INCLUDES
    /* In os_mac_conv.c and os_macosx.m NO_X11_INCLUDES is defined to avoid
     * X11 headers.  Disable all X11 related things to avoid conflicts. */
# ifdef FEAT_X11
#  undef FEAT_X11
# endif
# ifdef FEAT_GUI_X11
#  undef FEAT_GUI_X11
# endif
# ifdef FEAT_XCLIPBOARD
#  undef FEAT_XCLIPBOARD
# endif
# ifdef FEAT_GUI_MOTIF
#  undef FEAT_GUI_MOTIF
# endif
# ifdef FEAT_GUI_ATHENA
#  undef FEAT_GUI_ATHENA
# endif
# ifdef FEAT_GUI_GTK
#  undef FEAT_GUI_GTK
# endif
# ifdef FEAT_BEVAL_TIP
#  undef FEAT_BEVAL_TIP
# endif
# ifdef FEAT_XIM
#  undef FEAT_XIM
# endif
# ifdef FEAT_CLIENTSERVER
#  undef FEAT_CLIENTSERVER
# endif
#endif

/* The Mac conversion stuff doesn't work under X11. */
#if defined(MACOS_X_DARWIN)
# define MACOS_CONVERT
#endif

/* Can't use "PACKAGE" here, conflicts with a Perl include file. */
#ifndef VIMPACKAGE
# define VIMPACKAGE	"vim"
#endif

/*
 * Find out if function definitions should include argument types
 */
#ifdef AZTEC_C
# include <functions.h>
#endif

#ifdef SASC
# include <clib/exec_protos.h>
#endif

#ifdef _DCC
# include <clib/exec_protos.h>
#endif

#ifdef __BEOS__
# include "os_beos.h"
#endif

#if (defined(UNIX) || defined(VMS)) \
	&& (!defined(MACOS_X) || defined(HAVE_CONFIG_H))
# include "os_unix.h"	    /* bring lots of system header files */
#endif

/* Mark unused function arguments with UNUSED, so that gcc -Wunused-parameter
 * can be used to check for mistakes. */
#ifdef HAVE_ATTRIBUTE_UNUSED
# define UNUSED __attribute__((unused))
#else
# define UNUSED
#endif

/* Used to check for "sun", "__sun" is used by newer compilers. */
#if defined(__sun)
# define SUN_SYSTEM
#endif

/* If we're compiling in C++ (currently only KVim), the system
 * headers must have the correct prototypes or nothing will build.
 * Conversely, our prototypes might clash due to throw() specifiers and
 * cause compilation failures even though the headers are correct.  For
 * a concrete example, gcc-3.2 enforces exception specifications, and
 * glibc-2.2.5 has them in their system headers.
 */
#if !defined(__cplusplus) && defined(UNIX) \
	&& !defined(MACOS_X) /* MACOS_X doesn't yet support osdef.h */
# include "auto/osdef.h"	/* bring missing declarations in */
#endif

#ifdef AMIGA
# include "os_amiga.h"
#endif

#ifdef MSWIN
# include "os_win32.h"
#endif

#ifdef __MINT__
# include "os_mint.h"
#endif

#if defined(MACOS_X)
# include "os_mac.h"
#endif

#ifdef __QNX__
# include "os_qnx.h"
#endif

#ifdef X_LOCALE
# include <X11/Xlocale.h>
#else
# ifdef HAVE_LOCALE_H
#  include <locale.h>
# endif
#endif

/*
 * Maximum length of a path (for non-unix systems) Make it a bit long, to stay
 * on the safe side.  But not too long to put on the stack.
 */
#ifndef MAXPATHL
# ifdef MAXPATHLEN
#  define MAXPATHL  MAXPATHLEN
# else
#  define MAXPATHL  256
# endif
#endif
#ifdef BACKSLASH_IN_FILENAME
# define PATH_ESC_CHARS ((char_u *)" \t\n*?[{`%#'\"|!<")
#else
# ifdef VMS
    /* VMS allows a lot of characters in the file name */
#  define PATH_ESC_CHARS ((char_u *)" \t\n*?{`\\%#'\"|!")
#  define SHELL_ESC_CHARS ((char_u *)" \t\n*?{`\\%#'|!()&")
# else
#  define PATH_ESC_CHARS ((char_u *)" \t\n*?[{`$\\%#'\"|!<")
#  define SHELL_ESC_CHARS ((char_u *)" \t\n*?[{`$\\%#'\"|!<>();&")
# endif
#endif

/* length of a buffer to store a number in ASCII (64 bits binary + NUL) */
#define NUMBUFLEN 65

/* flags for vim_str2nr() */
#define STR2NR_BIN 1
#define STR2NR_OCT 2
#define STR2NR_HEX 4
#define STR2NR_ALL (STR2NR_BIN + STR2NR_OCT + STR2NR_HEX)
#define STR2NR_FORCE 8 /* only when ONE of the above is used */

/*
 * Shorthand for unsigned variables. Many systems, but not all, have u_char
 * already defined, so we use char_u to avoid trouble.
 */
typedef unsigned char	char_u;
typedef unsigned short	short_u;
typedef unsigned int	int_u;

/* Older systems do not have support for long long
 * use a typedef instead of hadcoded long long */
#ifdef HAVE_NO_LONG_LONG
 typedef long long_long_T;
 typedef long unsigned long_long_u_T;
#else
 typedef long long long_long_T;
 typedef long long unsigned long_long_u_T;
#endif

/* Make sure long_u is big enough to hold a pointer.
 * On Win64, longs are 32 bits and pointers are 64 bits.
 * For printf() and scanf(), we need to take care of long_u specifically. */
#ifdef _WIN64
typedef unsigned __int64	long_u;
typedef		 __int64	long_i;
# define SCANF_HEX_LONG_U       "%Ix"
# define SCANF_DECIMAL_LONG_U   "%Iu"
# define PRINTF_HEX_LONG_U      "0x%Ix"
#else
  /* Microsoft-specific. The __w64 keyword should be specified on any typedefs
   * that change size between 32-bit and 64-bit platforms.  For any such type,
   * __w64 should appear only on the 32-bit definition of the typedef.
   * Define __w64 as an empty token for everything but MSVC 7.x or later.
   */
# if !defined(_MSC_VER)	|| (_MSC_VER < 1300)
#  define __w64
# endif
typedef unsigned long __w64	long_u;
typedef		 long __w64     long_i;
# define SCANF_HEX_LONG_U       "%lx"
# define SCANF_DECIMAL_LONG_U   "%lu"
# define PRINTF_HEX_LONG_U      "0x%lx"
#endif
#define PRINTF_DECIMAL_LONG_U SCANF_DECIMAL_LONG_U

/*
 * Only systems which use configure will have SIZEOF_OFF_T and VIM_SIZEOF_LONG
 * defined, which is ok since those are the same systems which can have
 * varying sizes for off_t.  The other systems will continue to use "%ld" to
 * print off_t since off_t is simply a typedef to long for them.
 */
#if defined(SIZEOF_OFF_T) && (SIZEOF_OFF_T > VIM_SIZEOF_LONG)
# define LONG_LONG_OFF_T
#endif

/*
 * We use 64-bit file functions here, if available.  E.g. ftello() returns
 * off_t instead of long, which helps if long is 32 bit and off_t is 64 bit.
 * We assume that when fseeko() is available then ftello() is too.
 * Note that Windows has different function names.
 */
#if (defined(_MSC_VER) && (_MSC_VER >= 1300)) || defined(__MINGW32__)
typedef __int64 off_T;
# ifdef __MINGW32__
#  define vim_lseek lseek64
#  define vim_fseek fseeko64
#  define vim_ftell ftello64
# else
#  define vim_lseek _lseeki64
#  define vim_fseek _fseeki64
#  define vim_ftell _ftelli64
# endif
#else
# ifdef PROTO
typedef long off_T;
# else
typedef off_t off_T;
# endif
# ifdef HAVE_FSEEKO
#  define vim_lseek lseek
#  define vim_ftell ftello
#  define vim_fseek fseeko
# else
#  define vim_lseek lseek
#  define vim_ftell ftell
#  define vim_fseek(a, b, c)	fseek(a, (long)b, c)
# endif
#endif

/*
 * The characters and attributes cached for the screen.
 */
typedef char_u schar_T;
typedef unsigned short sattr_T;
#define MAX_TYPENR 65535

/*
 * The u8char_T can hold one decoded UTF-8 character.
 * We use 32 bits, since some Asian characters don't fit in 16 bits.
 */
typedef unsigned int u8char_T;	// int is 32 bits or more

#ifndef UNIX		    /* For Unix this is included in os_unix.h */
# include <stdio.h>
# include <ctype.h>
#endif

#include "ascii.h"
#include "keymap.h"
#include "term.h"
#include "macros.h"

#ifdef LATTICE
# include <sys/types.h>
# include <sys/stat.h>
#endif
#ifdef _DCC
# include <sys/stat.h>
#endif
#if defined(MSWIN)
# include <sys/stat.h>
#endif

#if defined(HAVE_ERRNO_H) || defined(MSWIN)
# include <errno.h>
#endif

/*
 * Allow other (non-unix) systems to configure themselves now
 * These are also in os_unix.h, because osdef.sh needs them there.
 */
#ifndef UNIX
/* Note: Some systems need both string.h and strings.h (Savage).  If the
 * system can't handle this, define NO_STRINGS_WITH_STRING_H. */
# ifdef HAVE_STRING_H
#  include <string.h>
# endif
# if defined(HAVE_STRINGS_H) && !defined(NO_STRINGS_WITH_STRING_H)
#  include <strings.h>
# endif
# ifdef HAVE_STAT_H
#  include <stat.h>
# endif
# ifdef HAVE_STDLIB_H
#  include <stdlib.h>
# endif
#endif /* NON-UNIX */

#include <assert.h>

#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#ifdef HAVE_WCTYPE_H
# include <wctype.h>
#endif
#include <stdarg.h>

/* for offsetof() */
#include <stddef.h>

#if defined(HAVE_SYS_SELECT_H) && \
	(!defined(HAVE_SYS_TIME_H) || defined(SYS_SELECT_WITH_SYS_TIME))
# include <sys/select.h>
#endif

#ifndef HAVE_SELECT
# ifdef HAVE_SYS_POLL_H
#  include <sys/poll.h>
# elif defined(MSWIN)
#  define HAVE_SELECT
# else
#  ifdef HAVE_POLL_H
#   include <poll.h>
#  endif
# endif
#endif

/* ================ end of the header file puzzle =============== */

/*
 * For dynamically loaded imm library. Currently, only for Win32.
 */
#ifdef DYNAMIC_IME
# ifndef FEAT_MBYTE_IME
#  define FEAT_MBYTE_IME
# endif
#endif

/*
 * For dynamically loaded gettext library.  Currently, only for Win32.
 */
#ifdef DYNAMIC_GETTEXT
# ifndef FEAT_GETTEXT
#  define FEAT_GETTEXT
# endif
/* These are in os_win32.c */
extern char *(*dyn_libintl_gettext)(const char *msgid);
extern char *(*dyn_libintl_ngettext)(const char *msgid, const char *msgid_plural, unsigned long n);
extern char *(*dyn_libintl_bindtextdomain)(const char *domainname, const char *dirname);
extern char *(*dyn_libintl_bind_textdomain_codeset)(const char *domainname, const char *codeset);
extern char *(*dyn_libintl_textdomain)(const char *domainname);
extern int (*dyn_libintl_wputenv)(const wchar_t *envstring);
#endif


/*
 * The _() stuff is for using gettext().  It is a no-op when libintl.h is not
 * found or the +multilang feature is disabled.
 * Use NGETTEXT(single, multi, number) to get plural behavior:
 * - single - message for singular form
 * - multi  - message for plural form
 * - number - the count
 */
#ifdef FEAT_GETTEXT
# ifdef DYNAMIC_GETTEXT
#  define _(x) (*dyn_libintl_gettext)((char *)(x))
#  define NGETTEXT(x, xs, n) (*dyn_libintl_ngettext)((char *)(x), (char *)(xs), (n))
#  define N_(x) x
#  define bindtextdomain(domain, dir) (*dyn_libintl_bindtextdomain)((domain), (dir))
#  define bind_textdomain_codeset(domain, codeset) (*dyn_libintl_bind_textdomain_codeset)((domain), (codeset))
#  if !defined(HAVE_BIND_TEXTDOMAIN_CODESET)
#   define HAVE_BIND_TEXTDOMAIN_CODESET 1
#  endif
#  define textdomain(domain) (*dyn_libintl_textdomain)(domain)
#  define libintl_wputenv(envstring) (*dyn_libintl_wputenv)(envstring)
# else
#  include <libintl.h>
#  define _(x) gettext((char *)(x))
#  define NGETTEXT(x, xs, n) ngettext((x), (xs), (n))
#  ifdef gettext_noop
#   define N_(x) gettext_noop(x)
#  else
#   define N_(x) x
#  endif
# endif
#else
# define _(x) ((char *)(x))
# define NGETTEXT(x, xs, n) (((n) == 1) ? (char *)(x) : (char *)(xs))
# define N_(x) x
# ifdef bindtextdomain
#  undef bindtextdomain
# endif
# define bindtextdomain(x, y) /* empty */
# ifdef bind_textdomain_codeset
#  undef bind_textdomain_codeset
# endif
# define bind_textdomain_codeset(x, y) /* empty */
# ifdef textdomain
#  undef textdomain
# endif
# define textdomain(x) /* empty */
#endif

/*
 * flags for update_screen()
 * The higher the value, the higher the priority
 */
#define VALID_NO_UPDATE		 5  /* no new changes, keep the command line if
				       possible */
#define VALID			10  /* buffer not changed, or changes marked
				       with b_mod_* */
#define INVERTED		20  /* redisplay inverted part that changed */
#define INVERTED_ALL		25  /* redisplay whole inverted part */
#define REDRAW_TOP		30  /* display first w_upd_rows screen lines */
#define SOME_VALID		35  /* like NOT_VALID but may scroll */
#define NOT_VALID		40  /* buffer needs complete redraw */
#define CLEAR			50  /* screen messed up, clear it */

/*
 * Flags for w_valid.
 * These are set when something in a window structure becomes invalid, except
 * when the cursor is moved.  Call check_cursor_moved() before testing one of
 * the flags.
 * These are reset when that thing has been updated and is valid again.
 *
 * Every function that invalidates one of these must call one of the
 * invalidate_* functions.
 *
 * w_valid is supposed to be used only in screen.c.  From other files, use the
 * functions that set or reset the flags.
 *
 * VALID_BOTLINE    VALID_BOTLINE_AP
 *     on		on		w_botline valid
 *     off		on		w_botline approximated
 *     off		off		w_botline not valid
 *     on		off		not possible
 */
#define VALID_WROW	0x01	/* w_wrow (window row) is valid */
#define VALID_WCOL	0x02	/* w_wcol (window col) is valid */
#define VALID_VIRTCOL	0x04	/* w_virtcol (file col) is valid */
#define VALID_CHEIGHT	0x08	/* w_cline_height and w_cline_folded valid */
#define VALID_CROW	0x10	/* w_cline_row is valid */
#define VALID_BOTLINE	0x20	/* w_botine and w_empty_rows are valid */
#define VALID_BOTLINE_AP 0x40	/* w_botine is approximated */
#define VALID_TOPLINE	0x80	/* w_topline is valid (for cursor position) */

/*
 * Terminal highlighting attribute bits.
 * Attributes above HL_ALL are used for syntax highlighting.
 */
#define HL_NORMAL		0x00
#define HL_INVERSE		0x01
#define HL_BOLD			0x02
#define HL_ITALIC		0x04
#define HL_UNDERLINE		0x08
#define HL_UNDERCURL		0x10
#define HL_STANDOUT		0x20
#define HL_NOCOMBINE		0x40
#define HL_STRIKETHROUGH	0x80
#define HL_ALL			0xff

/* special attribute addition: Put message in history */
#define MSG_HIST		0x1000

/*
 * values for State
 *
 * The lower bits up to 0x20 are used to distinguish normal/visual/op_pending
 * and cmdline/insert+replace mode.  This is used for mapping.  If none of
 * these bits are set, no mapping is done.
 * The upper bits are used to distinguish between other states.
 */
#define NORMAL		0x01	/* Normal mode, command expected */
#define VISUAL		0x02	/* Visual mode - use get_real_state() */
#define OP_PENDING	0x04	/* Normal mode, operator is pending - use
				   get_real_state() */
#define CMDLINE		0x08	/* Editing command line */
#define INSERT		0x10	/* Insert mode */
#define LANGMAP		0x20	/* Language mapping, can be combined with
				   INSERT and CMDLINE */

#define REPLACE_FLAG	0x40	/* Replace mode flag */
#define REPLACE		(REPLACE_FLAG + INSERT)
#define VREPLACE_FLAG	0x80	/* Virtual-replace mode flag */
#define VREPLACE	(REPLACE_FLAG + VREPLACE_FLAG + INSERT)
#define LREPLACE	(REPLACE_FLAG + LANGMAP)

#define NORMAL_BUSY	(0x100 + NORMAL) /* Normal mode, busy with a command */
#define HITRETURN	(0x200 + NORMAL) /* waiting for return or command */
#define ASKMORE		0x300	/* Asking if you want --more-- */
#define SETWSIZE	0x400	/* window size has changed */
#define ABBREV		0x500	/* abbreviation instead of mapping */
#define EXTERNCMD	0x600	/* executing an external command */
#define SHOWMATCH	(0x700 + INSERT) /* show matching paren */
#define CONFIRM		0x800	/* ":confirm" prompt */
#define SELECTMODE	0x1000	/* Select mode, only for mappings */
#define TERMINAL        0x2000  /* Terminal mode */

/* all mode bits used for mapping */
#define MAP_ALL_MODES	(0x3f | SELECTMODE | TERMINAL)

/* directions */
#define FORWARD			1
#define BACKWARD		(-1)
#define FORWARD_FILE		3
#define BACKWARD_FILE		(-3)

/* return values for functions */
#if !(defined(OK) && (OK == 1))
/* OK already defined to 1 in MacOS X curses, skip this */
# define OK			1
#endif
#define FAIL			0
#define NOTDONE			2   /* not OK or FAIL but skipped */

/* flags for b_flags */
#define BF_RECOVERED	0x01	/* buffer has been recovered */
#define BF_CHECK_RO	0x02	/* need to check readonly when loading file
				   into buffer (set by ":e", may be reset by
				   ":buf" */
#define BF_NEVERLOADED	0x04	/* file has never been loaded into buffer,
				   many variables still need to be set */
#define BF_NOTEDITED	0x08	/* Set when file name is changed after
				   starting to edit, reset when file is
				   written out. */
#define BF_NEW		0x10	/* file didn't exist when editing started */
#define BF_NEW_W	0x20	/* Warned for BF_NEW and file created */
#define BF_READERR	0x40	/* got errors while reading the file */
#define BF_DUMMY	0x80	/* dummy buffer, only used internally */
#define BF_PRESERVED	0x100	/* ":preserve" was used */

/* Mask to check for flags that prevent normal writing */
#define BF_WRITE_MASK	(BF_NOTEDITED + BF_NEW + BF_READERR)

/*
 * values for xp_context when doing command line completion
 */
#define EXPAND_UNSUCCESSFUL	(-2)
#define EXPAND_OK		(-1)
#define EXPAND_NOTHING		0
#define EXPAND_COMMANDS		1
#define EXPAND_FILES		2
#define EXPAND_DIRECTORIES	3
#define EXPAND_SETTINGS		4
#define EXPAND_BOOL_SETTINGS	5
#define EXPAND_TAGS		6
#define EXPAND_OLD_SETTING	7
#define EXPAND_HELP		8
#define EXPAND_BUFFERS		9
#define EXPAND_EVENTS		10
#define EXPAND_MENUS		11
#define EXPAND_SYNTAX		12
#define EXPAND_HIGHLIGHT	13
#define EXPAND_AUGROUP		14
#define EXPAND_USER_VARS	15
#define EXPAND_MAPPINGS		16
#define EXPAND_TAGS_LISTFILES	17
#define EXPAND_FUNCTIONS	18
#define EXPAND_USER_FUNC	19
#define EXPAND_EXPRESSION	20
#define EXPAND_MENUNAMES	21
#define EXPAND_USER_COMMANDS	22
#define EXPAND_USER_CMD_FLAGS	23
#define EXPAND_USER_NARGS	24
#define EXPAND_USER_COMPLETE	25
#define EXPAND_ENV_VARS		26
#define EXPAND_LANGUAGE		27
#define EXPAND_COLORS		28
#define EXPAND_COMPILER		29
#define EXPAND_USER_DEFINED	30
#define EXPAND_USER_LIST	31
#define EXPAND_SHELLCMD		32
#define EXPAND_CSCOPE		33
#define EXPAND_SIGN		34
#define EXPAND_PROFILE		35
#define EXPAND_BEHAVE		36
#define EXPAND_FILETYPE		37
#define EXPAND_FILES_IN_PATH	38
#define EXPAND_OWNSYNTAX	39
#define EXPAND_LOCALES		40
#define EXPAND_HISTORY		41
#define EXPAND_USER		42
#define EXPAND_SYNTIME		43
#define EXPAND_USER_ADDR_TYPE	44
#define EXPAND_PACKADD		45
#define EXPAND_MESSAGES		46
#define EXPAND_MAPCLEAR		47
#define EXPAND_ARGLIST		48

/* Values for exmode_active (0 is no exmode) */
#define EXMODE_NORMAL		1
#define EXMODE_VIM		2

/* Values for nextwild() and ExpandOne().  See ExpandOne() for meaning. */
#define WILD_FREE		1
#define WILD_EXPAND_FREE	2
#define WILD_EXPAND_KEEP	3
#define WILD_NEXT		4
#define WILD_PREV		5
#define WILD_ALL		6
#define WILD_LONGEST		7
#define WILD_ALL_KEEP		8

#define WILD_LIST_NOTFOUND	0x01
#define WILD_HOME_REPLACE	0x02
#define WILD_USE_NL		0x04
#define WILD_NO_BEEP		0x08
#define WILD_ADD_SLASH		0x10
#define WILD_KEEP_ALL		0x20
#define WILD_SILENT		0x40
#define WILD_ESCAPE		0x80
#define WILD_ICASE		0x100
#define WILD_ALLLINKS		0x200

/* Flags for expand_wildcards() */
#define EW_DIR		0x01	/* include directory names */
#define EW_FILE		0x02	/* include file names */
#define EW_NOTFOUND	0x04	/* include not found names */
#define EW_ADDSLASH	0x08	/* append slash to directory name */
#define EW_KEEPALL	0x10	/* keep all matches */
#define EW_SILENT	0x20	/* don't print "1 returned" from shell */
#define EW_EXEC		0x40	/* executable files */
#define EW_PATH		0x80	/* search in 'path' too */
#define EW_ICASE	0x100	/* ignore case */
#define EW_NOERROR	0x200	/* no error for bad regexp */
#define EW_NOTWILD	0x400	/* add match with literal name if exists */
#define EW_KEEPDOLLAR	0x800	/* do not escape $, $var is expanded */
/* Note: mostly EW_NOTFOUND and EW_SILENT are mutually exclusive: EW_NOTFOUND
 * is used when executing commands and EW_SILENT for interactive expanding. */
#define EW_ALLLINKS	0x1000	/* also links not pointing to existing file */
#define EW_SHELLCMD	0x2000	/* called from expand_shellcmd(), don't check
				 * if executable is in $PATH */
#define EW_DODOT	0x4000	/* also files starting with a dot */
#define EW_EMPTYOK	0x8000	/* no matches is not an error */

/* Flags for find_file_*() functions. */
#define FINDFILE_FILE	0	/* only files */
#define FINDFILE_DIR	1	/* only directories */
#define FINDFILE_BOTH	2	/* files and directories */

#define W_ENDCOL(wp)	(wp->w_wincol + wp->w_width)
#ifdef FEAT_MENU
# define W_WINROW(wp)	(wp->w_winrow + wp->w_winbar_height)
#else
# define W_WINROW(wp)	(wp->w_winrow)
#endif

#ifdef NO_EXPANDPATH
# define gen_expand_wildcards mch_expand_wildcards
#endif

/* Values for the find_pattern_in_path() function args 'type' and 'action': */
#define FIND_ANY	1
#define FIND_DEFINE	2
#define CHECK_PATH	3

#define ACTION_SHOW	1
#define ACTION_GOTO	2
#define ACTION_SPLIT	3
#define ACTION_SHOW_ALL	4
#ifdef FEAT_INS_EXPAND
# define ACTION_EXPAND	5
#endif

#ifdef FEAT_SYN_HL
# define SST_MIN_ENTRIES 150	/* minimal size for state stack array */
# define SST_MAX_ENTRIES 1000	/* maximal size for state stack array */
# define SST_FIX_STATES	 7	/* size of sst_stack[]. */
# define SST_DIST	 16	/* normal distance between entries */
# define SST_INVALID	(synstate_T *)-1	/* invalid syn_state pointer */

# define HL_CONTAINED	0x01	/* not used on toplevel */
# define HL_TRANSP	0x02	/* has no highlighting	*/
# define HL_ONELINE	0x04	/* match within one line only */
# define HL_HAS_EOL	0x08	/* end pattern that matches with $ */
# define HL_SYNC_HERE	0x10	/* sync point after this item (syncing only) */
# define HL_SYNC_THERE	0x20	/* sync point at current line (syncing only) */
# define HL_MATCH	0x40	/* use match ID instead of item ID */
# define HL_SKIPNL	0x80	/* nextgroup can skip newlines */
# define HL_SKIPWHITE	0x100	/* nextgroup can skip white space */
# define HL_SKIPEMPTY	0x200	/* nextgroup can skip empty lines */
# define HL_KEEPEND	0x400	/* end match always kept */
# define HL_EXCLUDENL	0x800	/* exclude NL from match */
# define HL_DISPLAY	0x1000	/* only used for displaying, not syncing */
# define HL_FOLD	0x2000	/* define fold */
# define HL_EXTEND	0x4000	/* ignore a keepend */
# define HL_MATCHCONT	0x8000	/* match continued from previous line */
# define HL_TRANS_CONT	0x10000 /* transparent item without contains arg */
# define HL_CONCEAL	0x20000 /* can be concealed */
# define HL_CONCEALENDS	0x40000 /* can be concealed */
#endif

/* Values for 'options' argument in do_search() and searchit() */
#define SEARCH_REV    0x01  /* go in reverse of previous dir. */
#define SEARCH_ECHO   0x02  /* echo the search command and handle options */
#define SEARCH_MSG    0x0c  /* give messages (yes, it's not 0x04) */
#define SEARCH_NFMSG  0x08  /* give all messages except not found */
#define SEARCH_OPT    0x10  /* interpret optional flags */
#define SEARCH_HIS    0x20  /* put search pattern in history */
#define SEARCH_END    0x40  /* put cursor at end of match */
#define SEARCH_NOOF   0x80  /* don't add offset to position */
#define SEARCH_START 0x100  /* start search without col offset */
#define SEARCH_MARK  0x200  /* set previous context mark */
#define SEARCH_KEEP  0x400  /* keep previous search pattern */
#define SEARCH_PEEK  0x800  /* peek for typed char, cancel search */
#define SEARCH_COL  0x1000  /* start at specified column instead of zero */

/* Values for find_ident_under_cursor() */
#define FIND_IDENT	1	/* find identifier (word) */
#define FIND_STRING	2	/* find any string (WORD) */
#define FIND_EVAL	4	/* include "->", "[]" and "." */

/* Values for file_name_in_line() */
#define FNAME_MESS	1	/* give error message */
#define FNAME_EXP	2	/* expand to path */
#define FNAME_HYP	4	/* check for hypertext link */
#define FNAME_INCL	8	/* apply 'includeexpr' */
#define FNAME_REL	16	/* ".." and "./" are relative to the (current)
				   file instead of the current directory */
#define FNAME_UNESC	32	/* remove backslashes used for escaping */

/* Values for buflist_getfile() */
#define GETF_SETMARK	0x01	/* set pcmark before jumping */
#define GETF_ALT	0x02	/* jumping to alternate file (not buf num) */
#define GETF_SWITCH	0x04	/* respect 'switchbuf' settings when jumping */

/* Return values of getfile() */
#define GETFILE_ERROR	    1	/* normal error */
#define GETFILE_NOT_WRITTEN 2	/* "not written" error */
#define GETFILE_SAME_FILE   0	/* success, same file */
#define GETFILE_OPEN_OTHER -1	/* success, opened another file */
#define GETFILE_UNUSED	    8
#define GETFILE_SUCCESS(x)  ((x) <= 0)

/* Values for buflist_new() flags */
#define BLN_CURBUF	1	/* may re-use curbuf for new buffer */
#define BLN_LISTED	2	/* put new buffer in buffer list */
#define BLN_DUMMY	4	/* allocating dummy buffer */
#define BLN_NEW		8	/* create a new buffer */
#define BLN_NOOPT	16	/* don't copy options to existing buffer */
#define BLN_DUMMY_OK	32	/* also find an existing dummy buffer */

/* Values for in_cinkeys() */
#define KEY_OPEN_FORW	0x101
#define KEY_OPEN_BACK	0x102
#define KEY_COMPLETE	0x103	/* end of completion */

/* Values for "noremap" argument of ins_typebuf().  Also used for
 * map->m_noremap and menu->noremap[]. */
#define REMAP_YES	0	/* allow remapping */
#define REMAP_NONE	-1	/* no remapping */
#define REMAP_SCRIPT	-2	/* remap script-local mappings only */
#define REMAP_SKIP	-3	/* no remapping for first char */

/* Values for mch_call_shell() second argument */
#define SHELL_FILTER	1	/* filtering text */
#define SHELL_EXPAND	2	/* expanding wildcards */
#define SHELL_COOKED	4	/* set term to cooked mode */
#define SHELL_DOOUT	8	/* redirecting output */
#define SHELL_SILENT	16	/* don't print error returned by command */
#define SHELL_READ	32	/* read lines and insert into buffer */
#define SHELL_WRITE	64	/* write lines from buffer */

/* Values returned by mch_nodetype() */
#define NODE_NORMAL	0	/* file or directory, check with mch_isdir()*/
#define NODE_WRITABLE	1	/* something we can write to (character
				   device, fifo, socket, ..) */
#define NODE_OTHER	2	/* non-writable thing (e.g., block device) */

/* Values for readfile() flags */
#define READ_NEW	0x01	/* read a file into a new buffer */
#define READ_FILTER	0x02	/* read filter output */
#define READ_STDIN	0x04	/* read from stdin */
#define READ_BUFFER	0x08	/* read from curbuf (converting stdin) */
#define READ_DUMMY	0x10	/* reading into a dummy buffer */
#define READ_KEEP_UNDO	0x20	/* keep undo info */
#define READ_FIFO	0x40	/* read from fifo or socket */

/* Values for change_indent() */
#define INDENT_SET	1	/* set indent */
#define INDENT_INC	2	/* increase indent */
#define INDENT_DEC	3	/* decrease indent */

/* Values for flags argument for findmatchlimit() */
#define FM_BACKWARD	0x01	/* search backwards */
#define FM_FORWARD	0x02	/* search forwards */
#define FM_BLOCKSTOP	0x04	/* stop at start/end of block */
#define FM_SKIPCOMM	0x08	/* skip comments */

/* Values for action argument for do_buffer() */
#define DOBUF_GOTO	0	/* go to specified buffer */
#define DOBUF_SPLIT	1	/* split window and go to specified buffer */
#define DOBUF_UNLOAD	2	/* unload specified buffer(s) */
#define DOBUF_DEL	3	/* delete specified buffer(s) from buflist */
#define DOBUF_WIPE	4	/* delete specified buffer(s) really */

/* Values for start argument for do_buffer() */
#define DOBUF_CURRENT	0	/* "count" buffer from current buffer */
#define DOBUF_FIRST	1	/* "count" buffer from first buffer */
#define DOBUF_LAST	2	/* "count" buffer from last buffer */
#define DOBUF_MOD	3	/* "count" mod. buffer from current buffer */

/* Values for sub_cmd and which_pat argument for search_regcomp() */
/* Also used for which_pat argument for searchit() */
#define RE_SEARCH	0	/* save/use pat in/from search_pattern */
#define RE_SUBST	1	/* save/use pat in/from subst_pattern */
#define RE_BOTH		2	/* save pat in both patterns */
#define RE_LAST		2	/* use last used pattern if "pat" is NULL */

/* Second argument for vim_regcomp(). */
#define RE_MAGIC	1	/* 'magic' option */
#define RE_STRING	2	/* match in string instead of buffer text */
#define RE_STRICT	4	/* don't allow [abc] without ] */
#define RE_AUTO		8	/* automatic engine selection */

#ifdef FEAT_SYN_HL
/* values for reg_do_extmatch */
# define REX_SET	1	/* to allow \z\(...\), */
# define REX_USE	2	/* to allow \z\1 et al. */
# define REX_ALL	(REX_SET | REX_USE)
#endif

/* Return values for fullpathcmp() */
/* Note: can use (fullpathcmp() & FPC_SAME) to check for equal files */
#define FPC_SAME	1	/* both exist and are the same file. */
#define FPC_DIFF	2	/* both exist and are different files. */
#define FPC_NOTX	4	/* both don't exist. */
#define FPC_DIFFX	6	/* one of them doesn't exist. */
#define FPC_SAMEX	7	/* both don't exist and file names are same. */

/* flags for do_ecmd() */
#define ECMD_HIDE	0x01	/* don't free the current buffer */
#define ECMD_SET_HELP	0x02	/* set b_help flag of (new) buffer before
				   opening file */
#define ECMD_OLDBUF	0x04	/* use existing buffer if it exists */
#define ECMD_FORCEIT	0x08	/* ! used in Ex command */
#define ECMD_ADDBUF	0x10	/* don't edit, just add to buffer list */

/* for lnum argument in do_ecmd() */
#define ECMD_LASTL	(linenr_T)0	/* use last position in loaded file */
#define ECMD_LAST	(linenr_T)-1	/* use last position in all files */
#define ECMD_ONE	(linenr_T)1	/* use first line */

/* flags for do_cmdline() */
#define DOCMD_VERBOSE	0x01	/* included command in error message */
#define DOCMD_NOWAIT	0x02	/* don't call wait_return() and friends */
#define DOCMD_REPEAT	0x04	/* repeat exec. until getline() returns NULL */
#define DOCMD_KEYTYPED	0x08	/* don't reset KeyTyped */
#define DOCMD_EXCRESET	0x10	/* reset exception environment (for debugging)*/
#define DOCMD_KEEPLINE  0x20	/* keep typed line for repeating with "." */

/* flags for beginline() */
#define BL_WHITE	1	/* cursor on first non-white in the line */
#define BL_SOL		2	/* use 'sol' option */
#define BL_FIX		4	/* don't leave cursor on a NUL */

/* flags for mf_sync() */
#define MFS_ALL		1	/* also sync blocks with negative numbers */
#define MFS_STOP	2	/* stop syncing when a character is available */
#define MFS_FLUSH	4	/* flushed file to disk */
#define MFS_ZERO	8	/* only write block 0 */

/* flags for buf_copy_options() */
#define BCO_ENTER	1	/* going to enter the buffer */
#define BCO_ALWAYS	2	/* always copy the options */
#define BCO_NOHELP	4	/* don't touch the help related options */

/* flags for do_put() */
#define PUT_FIXINDENT	1	/* make indent look nice */
#define PUT_CURSEND	2	/* leave cursor after end of new text */
#define PUT_CURSLINE	4	/* leave cursor on last line of new text */
#define PUT_LINE	8	/* put register as lines */
#define PUT_LINE_SPLIT	16	/* split line for linewise register */
#define PUT_LINE_FORWARD 32	/* put linewise register below Visual sel. */

/* flags for set_indent() */
#define SIN_CHANGED	1	/* call changed_bytes() when line changed */
#define SIN_INSERT	2	/* insert indent before existing text */
#define SIN_UNDO	4	/* save line for undo before changing it */

/* flags for insertchar() */
#define INSCHAR_FORMAT	1	/* force formatting */
#define INSCHAR_DO_COM	2	/* format comments */
#define INSCHAR_CTRLV	4	/* char typed just after CTRL-V */
#define INSCHAR_NO_FEX	8	/* don't use 'formatexpr' */
#define INSCHAR_COM_LIST 16	/* format comments with list/2nd line indent */

/* flags for open_line() */
#define OPENLINE_DELSPACES  1	/* delete spaces after cursor */
#define OPENLINE_DO_COM	    2	/* format comments */
#define OPENLINE_KEEPTRAIL  4	/* keep trailing spaces */
#define OPENLINE_MARKFIX    8	/* fix mark positions */
#define OPENLINE_COM_LIST  16	/* format comments with list/2nd line indent */

/*
 * There are five history tables:
 */
#define HIST_CMD	0	/* colon commands */
#define HIST_SEARCH	1	/* search commands */
#define HIST_EXPR	2	/* expressions (from entering = register) */
#define HIST_INPUT	3	/* input() lines */
#define HIST_DEBUG	4	/* debug commands */
#define HIST_COUNT	5	/* number of history tables */

/* The type numbers are fixed for backwards compatibility. */
#define BARTYPE_VERSION 1
#define BARTYPE_HISTORY 2
#define BARTYPE_REGISTER 3
#define BARTYPE_MARK 4

#define VIMINFO_VERSION 4
#define VIMINFO_VERSION_WITH_HISTORY 2
#define VIMINFO_VERSION_WITH_REGISTERS 3
#define VIMINFO_VERSION_WITH_MARKS 4

typedef enum {
    BVAL_NR,
    BVAL_STRING,
    BVAL_EMPTY
} btype_T;

typedef struct {
    btype_T	bv_type;
    long	bv_nr;
    char_u	*bv_string;
    int		bv_len;		/* length of bv_string */
    int		bv_allocated;	/* bv_string was allocated */
} bval_T;

/*
 * Values for do_tag().
 */
#define DT_TAG		1	/* jump to newer position or same tag again */
#define DT_POP		2	/* jump to older position */
#define DT_NEXT		3	/* jump to next match of same tag */
#define DT_PREV		4	/* jump to previous match of same tag */
#define DT_FIRST	5	/* jump to first match of same tag */
#define DT_LAST		6	/* jump to first match of same tag */
#define DT_SELECT	7	/* jump to selection from list */
#define DT_HELP		8	/* like DT_TAG, but no wildcards */
#define DT_JUMP		9	/* jump to new tag or selection from list */
#define DT_CSCOPE	10	/* cscope find command (like tjump) */
#define DT_LTAG		11	/* tag using location list */
#define DT_FREE		99	/* free cached matches */

/*
 * flags for find_tags().
 */
#define TAG_HELP	1	/* only search for help tags */
#define TAG_NAMES	2	/* only return name of tag */
#define	TAG_REGEXP	4	/* use tag pattern as regexp */
#define	TAG_NOIC	8	/* don't always ignore case */
#ifdef FEAT_CSCOPE
# define TAG_CSCOPE	16	/* cscope tag */
#endif
#define TAG_VERBOSE	32	/* message verbosity */
#define TAG_INS_COMP	64	/* Currently doing insert completion */
#define TAG_KEEP_LANG	128	/* keep current language */

#define TAG_MANY	300	/* When finding many tags (for completion),
				   find up to this many tags */

/*
 * Types of dialogs passed to do_vim_dialog().
 */
#define VIM_GENERIC	0
#define VIM_ERROR	1
#define VIM_WARNING	2
#define VIM_INFO	3
#define VIM_QUESTION	4
#define VIM_LAST_TYPE	4	/* sentinel value */

/*
 * Return values for functions like gui_yesnocancel()
 */
#define VIM_YES		2
#define VIM_NO		3
#define VIM_CANCEL	4
#define VIM_ALL		5
#define VIM_DISCARDALL  6

/*
 * arguments for win_split()
 */
#define WSP_ROOM	1	/* require enough room */
#define WSP_VERT	2	/* split vertically */
#define WSP_TOP		4	/* window at top-left of shell */
#define WSP_BOT		8	/* window at bottom-right of shell */
#define WSP_HELP	16	/* creating the help window */
#define WSP_BELOW	32	/* put new window below/right */
#define WSP_ABOVE	64	/* put new window above/left */
#define WSP_NEWLOC	128	/* don't copy location list */

/*
 * arguments for gui_set_shellsize()
 */
#define RESIZE_VERT	1	/* resize vertically */
#define RESIZE_HOR	2	/* resize horizontally */
#define RESIZE_BOTH	15	/* resize in both directions */

/*
 * flags for check_changed()
 */
#define CCGD_AW		1	/* do autowrite if buffer was changed */
#define CCGD_MULTWIN	2	/* check also when several wins for the buf */
#define CCGD_FORCEIT	4	/* ! used */
#define CCGD_ALLBUF	8	/* may write all buffers */
#define CCGD_EXCMD	16	/* may suggest using ! */

/*
 * "flags" values for option-setting functions.
 * When OPT_GLOBAL and OPT_LOCAL are both missing, set both local and global
 * values, get local value.
 */
#define OPT_FREE	1	/* free old value if it was allocated */
#define OPT_GLOBAL	2	/* use global value */
#define OPT_LOCAL	4	/* use local value */
#define OPT_MODELINE	8	/* option in modeline */
#define OPT_WINONLY	16	/* only set window-local options */
#define OPT_NOWIN	32	/* don't set window-local options */

/* Magic chars used in confirm dialog strings */
#define DLG_BUTTON_SEP	'\n'
#define DLG_HOTKEY_CHAR	'&'

/* Values for "starting" */
#define NO_SCREEN	2	/* no screen updating yet */
#define NO_BUFFERS	1	/* not all buffers loaded yet */
/*			0	   not starting anymore */

/* Values for swap_exists_action: what to do when swap file already exists */
#define SEA_NONE	0	/* don't use dialog */
#define SEA_DIALOG	1	/* use dialog when possible */
#define SEA_QUIT	2	/* quit editing the file */
#define SEA_RECOVER	3	/* recover the file */

/*
 * Minimal size for block 0 of a swap file.
 * NOTE: This depends on size of struct block0! It's not done with a sizeof(),
 * because struct block0 is defined in memline.c (Sorry).
 * The maximal block size is arbitrary.
 */
#define MIN_SWAP_PAGE_SIZE 1048
#define MAX_SWAP_PAGE_SIZE 50000

/* Special values for current_sctx.sc_sid. */
#define SID_MODELINE	-1	/* when using a modeline */
#define SID_CMDARG	-2	/* for "--cmd" argument */
#define SID_CARG	-3	/* for "-c" argument */
#define SID_ENV		-4	/* for sourcing environment variable */
#define SID_ERROR	-5	/* option was reset because of an error */
#define SID_NONE	-6	/* don't set scriptID */

/*
 * Events for autocommands.
 */
enum auto_event
{
    EVENT_BUFADD = 0,		// after adding a buffer to the buffer list
    EVENT_BUFDELETE,		// deleting a buffer from the buffer list
    EVENT_BUFENTER,		// after entering a buffer
    EVENT_BUFFILEPOST,		// after renaming a buffer
    EVENT_BUFFILEPRE,		// before renaming a buffer
    EVENT_BUFHIDDEN,		// just after buffer becomes hidden
    EVENT_BUFLEAVE,		// before leaving a buffer
    EVENT_BUFNEW,		// after creating any buffer
    EVENT_BUFNEWFILE,		// when creating a buffer for a new file
    EVENT_BUFREADCMD,		// read buffer using command
    EVENT_BUFREADPOST,		// after reading a buffer
    EVENT_BUFREADPRE,		// before reading a buffer
    EVENT_BUFUNLOAD,		// just before unloading a buffer
    EVENT_BUFWINENTER,		// after showing a buffer in a window
    EVENT_BUFWINLEAVE,		// just after buffer removed from window
    EVENT_BUFWIPEOUT,		// just before really deleting a buffer
    EVENT_BUFWRITECMD,		// write buffer using command
    EVENT_BUFWRITEPOST,		// after writing a buffer
    EVENT_BUFWRITEPRE,		// before writing a buffer
    EVENT_CMDLINECHANGED,	// command line was modified
    EVENT_CMDLINEENTER,		// after entering the command line
    EVENT_CMDLINELEAVE,		// before leaving the command line
    EVENT_CMDUNDEFINED,		// command undefined
    EVENT_CMDWINENTER,		// after entering the cmdline window
    EVENT_CMDWINLEAVE,		// before leaving the cmdline window
    EVENT_COLORSCHEME,		// after loading a colorscheme
    EVENT_COLORSCHEMEPRE,	// before loading a colorscheme
    EVENT_COMPLETEDONE,		// after finishing insert complete
    EVENT_CURSORHOLD,		// cursor in same position for a while
    EVENT_CURSORHOLDI,		// idem, in Insert mode
    EVENT_CURSORMOVED,		// cursor was moved
    EVENT_CURSORMOVEDI,		// cursor was moved in Insert mode
    EVENT_DIFFUPDATED,		// after diffs were updated
    EVENT_DIRCHANGED,		// after user changed directory
    EVENT_ENCODINGCHANGED,	// after changing the 'encoding' option
    EVENT_EXITPRE,		// before exiting
    EVENT_FILEAPPENDCMD,	// append to a file using command
    EVENT_FILEAPPENDPOST,	// after appending to a file
    EVENT_FILEAPPENDPRE,	// before appending to a file
    EVENT_FILECHANGEDRO,	// before first change to read-only file
    EVENT_FILECHANGEDSHELL,	// after shell command that changed file
    EVENT_FILECHANGEDSHELLPOST,	// after (not) reloading changed file
    EVENT_FILEREADCMD,		// read from a file using command
    EVENT_FILEREADPOST,		// after reading a file
    EVENT_FILEREADPRE,		// before reading a file
    EVENT_FILETYPE,		// new file type detected (user defined)
    EVENT_FILEWRITECMD,		// write to a file using command
    EVENT_FILEWRITEPOST,	// after writing a file
    EVENT_FILEWRITEPRE,		// before writing a file
    EVENT_FILTERREADPOST,	// after reading from a filter
    EVENT_FILTERREADPRE,	// before reading from a filter
    EVENT_FILTERWRITEPOST,	// after writing to a filter
    EVENT_FILTERWRITEPRE,	// before writing to a filter
    EVENT_FOCUSGAINED,		// got the focus
    EVENT_FOCUSLOST,		// lost the focus to another app
    EVENT_FUNCUNDEFINED,	// if calling a function which doesn't exist
    EVENT_GUIENTER,		// after starting the GUI
    EVENT_GUIFAILED,		// after starting the GUI failed
    EVENT_INSERTCHANGE,		// when changing Insert/Replace mode
    EVENT_INSERTCHARPRE,	// before inserting a char
    EVENT_INSERTENTER,		// when entering Insert mode
    EVENT_INSERTLEAVE,		// when leaving Insert mode
    EVENT_MENUPOPUP,		// just before popup menu is displayed
    EVENT_OPTIONSET,		// option was set
    EVENT_QUICKFIXCMDPOST,	// after :make, :grep etc.
    EVENT_QUICKFIXCMDPRE,	// before :make, :grep etc.
    EVENT_QUITPRE,		// before :quit
    EVENT_REMOTEREPLY,		// upon string reception from a remote vim
    EVENT_SESSIONLOADPOST,	// after loading a session file
    EVENT_SHELLCMDPOST,		// after ":!cmd"
    EVENT_SHELLFILTERPOST,	// after ":1,2!cmd", ":w !cmd", ":r !cmd".
    EVENT_SOURCECMD,		// sourcing a Vim script using command
    EVENT_SOURCEPRE,		// before sourcing a Vim script
    EVENT_SOURCEPOST,		// after sourcing a Vim script
    EVENT_SPELLFILEMISSING,	// spell file missing
    EVENT_STDINREADPOST,	// after reading from stdin
    EVENT_STDINREADPRE,		// before reading from stdin
    EVENT_SWAPEXISTS,		// found existing swap file
    EVENT_SYNTAX,		// syntax selected
    EVENT_TABCLOSED,		// after closing a tab page
    EVENT_TABENTER,		// after entering a tab page
    EVENT_TABLEAVE,		// before leaving a tab page
    EVENT_TABNEW,		// when entering a new tab page
    EVENT_TERMCHANGED,		// after changing 'term'
    EVENT_TERMINALOPEN,		// after a terminal buffer was created
    EVENT_TERMRESPONSE,		// after setting "v:termresponse"
    EVENT_TEXTCHANGED,		// text was modified not in Insert mode
    EVENT_TEXTCHANGEDI,         // text was modified in Insert mode
    EVENT_TEXTCHANGEDP,         // TextChangedI with popup menu visible
    EVENT_TEXTYANKPOST,		// after some text was yanked
    EVENT_USER,			// user defined autocommand
    EVENT_VIMENTER,		// after starting Vim
    EVENT_VIMLEAVE,		// before exiting Vim
    EVENT_VIMLEAVEPRE,		// before exiting Vim and writing .viminfo
    EVENT_VIMRESIZED,		// after Vim window was resized
    EVENT_WINENTER,		// after entering a window
    EVENT_WINLEAVE,		// before leaving a window
    EVENT_WINNEW,		// when entering a new window

    NUM_EVENTS			// MUST be the last one
};

typedef enum auto_event event_T;

/*
 * Values for index in highlight_attr[].
 * When making changes, also update HL_FLAGS below!  And update the default
 * value of 'highlight' in option.c.
 */
typedef enum
{
    HLF_8 = 0	    /* Meta & special keys listed with ":map", text that is
		       displayed different from what it is */
    , HLF_EOB	    /* after the last line in the buffer */
    , HLF_AT	    /* @ characters at end of screen, characters that
		       don't really exist in the text */
    , HLF_D	    /* directories in CTRL-D listing */
    , HLF_E	    /* error messages */
    , HLF_H	    /* obsolete, ignored */
    , HLF_I	    /* incremental search */
    , HLF_L	    /* last search string */
    , HLF_M	    /* "--More--" message */
    , HLF_CM	    /* Mode (e.g., "-- INSERT --") */
    , HLF_N	    /* line number for ":number" and ":#" commands */
    , HLF_CLN	    /* current line number */
    , HLF_R	    /* return to continue message and yes/no questions */
    , HLF_S	    /* status lines */
    , HLF_SNC	    /* status lines of not-current windows */
    , HLF_C	    /* column to separate vertically split windows */
    , HLF_T	    /* Titles for output from ":set all", ":autocmd" etc. */
    , HLF_V	    /* Visual mode */
    , HLF_VNC	    /* Visual mode, autoselecting and not clipboard owner */
    , HLF_W	    /* warning messages */
    , HLF_WM	    /* Wildmenu highlight */
    , HLF_FL	    /* Folded line */
    , HLF_FC	    /* Fold column */
    , HLF_ADD	    /* Added diff line */
    , HLF_CHD	    /* Changed diff line */
    , HLF_DED	    /* Deleted diff line */
    , HLF_TXD	    /* Text Changed in diff line */
    , HLF_CONCEAL   /* Concealed text */
    , HLF_SC	    /* Sign column */
    , HLF_SPB	    /* SpellBad */
    , HLF_SPC	    /* SpellCap */
    , HLF_SPR	    /* SpellRare */
    , HLF_SPL	    /* SpellLocal */
    , HLF_PNI	    /* popup menu normal item */
    , HLF_PSI	    /* popup menu selected item */
    , HLF_PSB	    /* popup menu scrollbar */
    , HLF_PST	    /* popup menu scrollbar thumb */
    , HLF_TP	    /* tabpage line */
    , HLF_TPS	    /* tabpage line selected */
    , HLF_TPF	    /* tabpage line filler */
    , HLF_CUC	    /* 'cursorcolumn' */
    , HLF_CUL	    /* 'cursorline' */
    , HLF_MC	    /* 'colorcolumn' */
    , HLF_QFL	    /* quickfix window line currently selected */
    , HLF_ST	    /* status lines of terminal windows */
    , HLF_STNC	    /* status lines of not-current terminal windows */
    , HLF_COUNT	    /* MUST be the last one */
} hlf_T;

/* The HL_FLAGS must be in the same order as the HLF_ enums!
 * When changing this also adjust the default for 'highlight'. */
#define HL_FLAGS {'8', '~', '@', 'd', 'e', 'h', 'i', 'l', 'm', 'M', \
		  'n', 'N', 'r', 's', 'S', 'c', 't', 'v', 'V', 'w', 'W', \
		  'f', 'F', 'A', 'C', 'D', 'T', '-', '>', \
		  'B', 'P', 'R', 'L', \
		  '+', '=', 'x', 'X', '*', '#', '_', '!', '.', 'o', 'q', \
		  'z', 'Z'}

/*
 * Boolean constants
 */
#ifndef TRUE
# define FALSE	0	    /* note: this is an int, not a long! */
# define TRUE	1
#endif

#define MAYBE	2	    /* sometimes used for a variant on TRUE */

#ifndef UINT32_T
typedef UINT32_TYPEDEF UINT32_T;
#endif

/*
 * Operator IDs; The order must correspond to opchars[] in ops.c!
 */
#define OP_NOP		0	/* no pending operation */
#define OP_DELETE	1	/* "d"  delete operator */
#define OP_YANK		2	/* "y"  yank operator */
#define OP_CHANGE	3	/* "c"  change operator */
#define OP_LSHIFT	4	/* "<"  left shift operator */
#define OP_RSHIFT	5	/* ">"  right shift operator */
#define OP_FILTER	6	/* "!"  filter operator */
#define OP_TILDE	7	/* "g~" switch case operator */
#define OP_INDENT	8	/* "="  indent operator */
#define OP_FORMAT	9	/* "gq" format operator */
#define OP_COLON	10	/* ":"  colon operator */
#define OP_UPPER	11	/* "gU" make upper case operator */
#define OP_LOWER	12	/* "gu" make lower case operator */
#define OP_JOIN		13	/* "J"  join operator, only for Visual mode */
#define OP_JOIN_NS	14	/* "gJ"  join operator, only for Visual mode */
#define OP_ROT13	15	/* "g?" rot-13 encoding */
#define OP_REPLACE	16	/* "r"  replace chars, only for Visual mode */
#define OP_INSERT	17	/* "I"  Insert column, only for Visual mode */
#define OP_APPEND	18	/* "A"  Append column, only for Visual mode */
#define OP_FOLD		19	/* "zf" define a fold */
#define OP_FOLDOPEN	20	/* "zo" open folds */
#define OP_FOLDOPENREC	21	/* "zO" open folds recursively */
#define OP_FOLDCLOSE	22	/* "zc" close folds */
#define OP_FOLDCLOSEREC	23	/* "zC" close folds recursively */
#define OP_FOLDDEL	24	/* "zd" delete folds */
#define OP_FOLDDELREC	25	/* "zD" delete folds recursively */
#define OP_FORMAT2	26	/* "gw" format operator, keeps cursor pos */
#define OP_FUNCTION	27	/* "g@" call 'operatorfunc' */
#define OP_NR_ADD	28	/* "<C-A>" Add to the number or alphabetic
				   character (OP_ADD conflicts with Perl) */
#define OP_NR_SUB	29	/* "<C-X>" Subtract from the number or
				   alphabetic character */

/*
 * Motion types, used for operators and for yank/delete registers.
 */
#define MCHAR	0		/* character-wise movement/register */
#define MLINE	1		/* line-wise movement/register */
#define MBLOCK	2		/* block-wise register */

#define MAUTO	0xff		/* Decide between MLINE/MCHAR */

/*
 * Minimum screen size
 */
#define MIN_COLUMNS	12	/* minimal columns for screen */
#define MIN_LINES	2	/* minimal lines for screen */
#define STATUS_HEIGHT	1	/* height of a status line under a window */
#ifdef FEAT_MENU		/* height of a status line under a window */
# define WINBAR_HEIGHT(wp)	(wp)->w_winbar_height
# define VISIBLE_HEIGHT(wp)	((wp)->w_height + (wp)->w_winbar_height)
#else
# define WINBAR_HEIGHT(wp)	0
# define VISIBLE_HEIGHT(wp)	(wp)->w_height
#endif
#define QF_WINHEIGHT	10	/* default height for quickfix window */

/*
 * Buffer sizes
 */
#ifndef CMDBUFFSIZE
# define CMDBUFFSIZE	256	/* size of the command processing buffer */
#endif

#define LSIZE	    512		/* max. size of a line in the tags file */

#define IOSIZE	   (1024+1)	/* file i/o and sprintf buffer size */

#define DIALOG_MSG_SIZE 1000	/* buffer size for dialog_msg() */

#define MSG_BUF_LEN 480	/* length of buffer for small messages */
#define MSG_BUF_CLEN  (MSG_BUF_LEN / 6)    /* cell length (worst case: utf-8
					       takes 6 bytes for one cell) */

#define FOLD_TEXT_LEN  51	/* buffer size for get_foldtext() */

/* Size of the buffer used for tgetent().  Unfortunately this is largely
 * undocumented, some systems use 1024.  Using a buffer that is too small
 * causes a buffer overrun and a crash.  Use the maximum known value to stay
 * on the safe side. */
#define TBUFSZ 2048		/* buffer size for termcap entry */

/*
 * Maximum length of key sequence to be mapped.
 * Must be able to hold an Amiga resize report.
 */
#define MAXMAPLEN   50

/* Size in bytes of the hash used in the undo file. */
#define UNDO_HASH_SIZE 32

#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif

#ifdef BINARY_FILE_IO
# define WRITEBIN   "wb"	/* no CR-LF translation */
# define READBIN    "rb"
# define APPENDBIN  "ab"
#else
# define WRITEBIN   "w"
# define READBIN    "r"
# define APPENDBIN  "a"
#endif

/*
 * EMX doesn't have a global way of making open() use binary I/O.
 * Use O_BINARY for all open() calls.
 */
#if defined(__CYGWIN32__)
# define O_EXTRA    O_BINARY
#else
# define O_EXTRA    0
#endif

#ifndef O_NOFOLLOW
# define O_NOFOLLOW 0
#endif

#ifndef W_OK
# define W_OK 2		/* for systems that don't have W_OK in unistd.h */
#endif
#ifndef R_OK
# define R_OK 4		/* for systems that don't have R_OK in unistd.h */
#endif

/*
 * defines to avoid typecasts from (char_u *) to (char *) and back
 * (vim_strchr() and vim_strrchr() are now in alloc.c)
 */
#define STRLEN(s)	    strlen((char *)(s))
#define STRCPY(d, s)	    strcpy((char *)(d), (char *)(s))
#define STRNCPY(d, s, n)    strncpy((char *)(d), (char *)(s), (size_t)(n))
#define STRCMP(d, s)	    strcmp((char *)(d), (char *)(s))
#define STRNCMP(d, s, n)    strncmp((char *)(d), (char *)(s), (size_t)(n))
#ifdef HAVE_STRCASECMP
# define STRICMP(d, s)	    strcasecmp((char *)(d), (char *)(s))
#else
# ifdef HAVE_STRICMP
#  define STRICMP(d, s)	    stricmp((char *)(d), (char *)(s))
# else
#  define STRICMP(d, s)	    vim_stricmp((char *)(d), (char *)(s))
# endif
#endif

/* Like strcpy() but allows overlapped source and destination. */
#define STRMOVE(d, s)	    mch_memmove((d), (s), STRLEN(s) + 1)

#ifdef HAVE_STRNCASECMP
# define STRNICMP(d, s, n)  strncasecmp((char *)(d), (char *)(s), (size_t)(n))
#else
# ifdef HAVE_STRNICMP
#  define STRNICMP(d, s, n) strnicmp((char *)(d), (char *)(s), (size_t)(n))
# else
#  define STRNICMP(d, s, n) vim_strnicmp((char *)(d), (char *)(s), (size_t)(n))
# endif
#endif

/* We need to call mb_stricmp() even when we aren't dealing with a multi-byte
 * encoding because mb_stricmp() takes care of all ascii and non-ascii
 * encodings, including characters with umlauts in latin1, etc., while
 * STRICMP() only handles the system locale version, which often does not
 * handle non-ascii properly. */

# define MB_STRICMP(d, s)	mb_strnicmp((char_u *)(d), (char_u *)(s), (int)MAXCOL)
# define MB_STRNICMP(d, s, n)	mb_strnicmp((char_u *)(d), (char_u *)(s), (int)(n))

#define STRCAT(d, s)	    strcat((char *)(d), (char *)(s))
#define STRNCAT(d, s, n)    strncat((char *)(d), (char *)(s), (size_t)(n))

#ifdef HAVE_STRPBRK
# define vim_strpbrk(s, cs) (char_u *)strpbrk((char *)(s), (char *)(cs))
#endif

#define OUT_STR(s)		    out_str((char_u *)(s))
#define OUT_STR_NF(s)		    out_str_nf((char_u *)(s))

#ifdef FEAT_GUI
# ifdef FEAT_TERMGUICOLORS
#  define GUI_FUNCTION(f)	    (gui.in_use ? gui_##f : termgui_##f)
#  define GUI_FUNCTION2(f, pixel)   (gui.in_use \
				    ?  ((pixel) != INVALCOLOR \
					? gui_##f((pixel)) \
					: INVALCOLOR) \
				    : termgui_##f((pixel)))
#  define USE_24BIT		    (gui.in_use || p_tgc)
# else
#  define GUI_FUNCTION(f)	    gui_##f
#  define GUI_FUNCTION2(f,pixel)    ((pixel) != INVALCOLOR \
				     ? gui_##f((pixel)) \
				     : INVALCOLOR)
#  define USE_24BIT		    gui.in_use
# endif
#else
# ifdef FEAT_TERMGUICOLORS
#  define GUI_FUNCTION(f)	    termgui_##f
#  define GUI_FUNCTION2(f, pixel)   termgui_##f((pixel))
#  define USE_24BIT		    p_tgc
# endif
#endif
#ifdef FEAT_TERMGUICOLORS
# define IS_CTERM		    (t_colors > 1 || p_tgc)
#else
# define IS_CTERM		    (t_colors > 1)
#endif
#ifdef GUI_FUNCTION
# define GUI_MCH_GET_RGB	    GUI_FUNCTION(mch_get_rgb)
# define GUI_MCH_GET_RGB2(pixel)    GUI_FUNCTION2(mch_get_rgb, (pixel))
# define GUI_MCH_GET_COLOR	    GUI_FUNCTION(mch_get_color)
# define GUI_GET_COLOR		    GUI_FUNCTION(get_color)
#endif

/* Prefer using emsgf(), because perror() may send the output to the wrong
 * destination and mess up the screen. */
#ifdef HAVE_STRERROR
# define PERROR(msg)		    (void)semsg("%s: %s", (char *)msg, strerror(errno))
#else
# define PERROR(msg)		    do_perror(msg)
#endif

typedef long	linenr_T;		/* line number type */
typedef int	colnr_T;		/* column number type */
typedef unsigned short disptick_T;	/* display tick type */

/*
 * Well, you won't believe it, but some S/390 machines ("host", now also known
 * as zServer) use 31 bit pointers. There are also some newer machines, that
 * use 64 bit pointers. I don't know how to distinguish between 31 and 64 bit
 * machines, so the best way is to assume 31 bits whenever we detect OS/390
 * Unix.
 * With this we restrict the maximum line length to 1073741823. I guess this is
 * not a real problem. BTW:  Longer lines are split.
 */
#ifdef __MVS__
# define MAXCOL (0x3fffffffL)		// maximum column number, 30 bits
# define MAXLNUM (0x3fffffffL)		// maximum (invalid) line number
#else
# define MAXCOL  INT_MAX		// maximum column number
# define MAXLNUM LONG_MAX		// maximum (invalid) line number
#endif

#define SHOWCMD_COLS 10			// columns needed by shown command
#define STL_MAX_ITEM 80			// max nr of %<flag> in statusline

typedef void	    *vim_acl_T;		// dummy to pass an ACL to a function

#ifndef mch_memmove
# define mch_memmove(to, from, len) memmove((char*)(to), (char*)(from), (size_t)(len))
#endif

/*
 * fnamecmp() is used to compare file names.
 * On some systems case in a file name does not matter, on others it does.
 * (this does not account for maximum name lengths and things like "../dir",
 * thus it is not 100% accurate!)
 */
#define fnamecmp(x, y) vim_fnamecmp((char_u *)(x), (char_u *)(y))
#define fnamencmp(x, y, n) vim_fnamencmp((char_u *)(x), (char_u *)(y), (size_t)(n))

#ifdef HAVE_MEMSET
# define vim_memset(ptr, c, size)   memset((ptr), (c), (size))
#else
void *vim_memset(void *, int, size_t);
#endif

#if defined(UNIX) || defined(FEAT_GUI) || defined(VMS) \
	|| defined(FEAT_CLIENTSERVER)
# define USE_INPUT_BUF
#endif

#ifndef EINTR
# define read_eintr(fd, buf, count) vim_read((fd), (buf), (count))
# define write_eintr(fd, buf, count) vim_write((fd), (buf), (count))
#endif

#ifdef MSWIN
/* On MS-Windows the third argument isn't size_t.  This matters for Win64,
 * where sizeof(size_t)==8, not 4 */
# define vim_read(fd, buf, count)   read((fd), (char *)(buf), (unsigned int)(count))
# define vim_write(fd, buf, count)  write((fd), (char *)(buf), (unsigned int)(count))
#else
# define vim_read(fd, buf, count)   read((fd), (char *)(buf), (size_t) (count))
# define vim_write(fd, buf, count)  write((fd), (char *)(buf), (size_t) (count))
#endif

/*
 * Enums need a typecast to be used as array index (for Ultrix).
 */
#define HL_ATTR(n)	highlight_attr[(int)(n)]
#define TERM_STR(n)	term_strings[(int)(n)]

/*
 * EXTERN is only defined in main.c.  That's where global variables are
 * actually defined and initialized.
 */
#ifndef EXTERN
# define EXTERN extern
# define INIT(x)
#else
# ifndef INIT
#  define INIT(x) x
#  define DO_INIT
#  define COMMA ,
# endif
#endif

#define MAX_MCO	6	/* maximum value for 'maxcombine' */

/* Maximum number of bytes in a multi-byte character.  It can be one 32-bit
 * character of up to 6 bytes, or one 16-bit character of up to three bytes
 * plus six following composing characters of three bytes each. */
#define MB_MAXBYTES	21

#if (defined(FEAT_PROFILE) || defined(FEAT_RELTIME)) && !defined(PROTO)
# ifdef MSWIN
typedef LARGE_INTEGER proftime_T;
# else
typedef struct timeval proftime_T;
# endif
#else
typedef int proftime_T;	    /* dummy for function prototypes */
#endif

/*
 * When compiling with 32 bit Perl time_t is 32 bits in the Perl code but 64
 * bits elsewhere.  That causes memory corruption.  Define time_T and use it
 * for global variables to avoid that.
 */
#ifdef PROTO
typedef long  time_T;
#else
# ifdef MSWIN
typedef __time64_t  time_T;
# else
typedef time_t	    time_T;
# endif
#endif

#ifdef _WIN64
typedef __int64 sock_T;
#else
typedef int sock_T;
#endif

/* Include option.h before structs.h, because the number of window-local and
 * buffer-local options is used there. */
#include "option.h"	/* options and default values */

#include "beval.h"	/* BalloonEval */

/* Note that gui.h is included by structs.h */

#include "structs.h"	/* defines many structures */

#include "alloc.h"

/* Values for "do_profiling". */
#define PROF_NONE	0	/* profiling not started */
#define PROF_YES	1	/* profiling busy */
#define PROF_PAUSED	2	/* profiling paused */

#ifdef FEAT_MOUSE

/* Codes for mouse button events in lower three bits: */
# define MOUSE_LEFT	0x00
# define MOUSE_MIDDLE	0x01
# define MOUSE_RIGHT	0x02
# define MOUSE_RELEASE	0x03

/* bit masks for modifiers: */
# define MOUSE_SHIFT	0x04
# define MOUSE_ALT	0x08
# define MOUSE_CTRL	0x10

/* mouse buttons that are handled like a key press (GUI only) */
/* Note that the scroll wheel keys are inverted: MOUSE_5 scrolls lines up but
 * the result of this is that the window moves down, similarly MOUSE_6 scrolls
 * columns left but the window moves right. */
# define MOUSE_4	0x100	/* scroll wheel down */
# define MOUSE_5	0x200	/* scroll wheel up */

# define MOUSE_X1	0x300 /* Mouse-button X1 (6th) */
# define MOUSE_X2	0x400 /* Mouse-button X2 */

# define MOUSE_6	0x500	/* scroll wheel left */
# define MOUSE_7	0x600	/* scroll wheel right */

/* 0x20 is reserved by xterm */
# define MOUSE_DRAG_XTERM   0x40

# define MOUSE_DRAG	(0x40 | MOUSE_RELEASE)

/* Lowest button code for using the mouse wheel (xterm only) */
# define MOUSEWHEEL_LOW		0x60

# define MOUSE_CLICK_MASK	0x03

# define NUM_MOUSE_CLICKS(code) \
    (((unsigned)((code) & 0xC0) >> 6) + 1)

# define SET_NUM_MOUSE_CLICKS(code, num) \
    (code) = ((code) & 0x3f) | ((((num) - 1) & 3) << 6)

/* Added to mouse column for GUI when 'mousefocus' wants to give focus to a
 * window by simulating a click on its status line.  We could use up to 128 *
 * 128 = 16384 columns, now it's reduced to 10000. */
# define MOUSE_COLOFF 10000

/*
 * jump_to_mouse() returns one of first four these values, possibly with
 * some of the other three added.
 */
# define IN_UNKNOWN		0
# define IN_BUFFER		1
# define IN_STATUS_LINE		2	/* on status or command line */
# define IN_SEP_LINE		4	/* on vertical separator line */
# define IN_OTHER_WIN		8	/* in other window but can't go there */
# define CURSOR_MOVED		0x100
# define MOUSE_FOLD_CLOSE	0x200	/* clicked on '-' in fold column */
# define MOUSE_FOLD_OPEN	0x400	/* clicked on '+' in fold column */
# define MOUSE_WINBAR		0x800	/* in window toolbar */

/* flags for jump_to_mouse() */
# define MOUSE_FOCUS		0x01	/* need to stay in this window */
# define MOUSE_MAY_VIS		0x02	/* may start Visual mode */
# define MOUSE_DID_MOVE		0x04	/* only act when mouse has moved */
# define MOUSE_SETPOS		0x08	/* only set current mouse position */
# define MOUSE_MAY_STOP_VIS	0x10	/* may stop Visual mode */
# define MOUSE_RELEASED		0x20	/* button was released */

# if defined(UNIX) && defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H)
#  define CHECK_DOUBLE_CLICK 1	/* Checking for double clicks ourselves. */
# endif

#endif /* FEAT_MOUSE */

/* defines for eval_vars() */
#define VALID_PATH		1
#define VALID_HEAD		2

/* Defines for Vim variables.  These must match vimvars[] in eval.c! */
#define VV_COUNT	0
#define VV_COUNT1	1
#define VV_PREVCOUNT	2
#define VV_ERRMSG	3
#define VV_WARNINGMSG	4
#define VV_STATUSMSG	5
#define VV_SHELL_ERROR	6
#define VV_THIS_SESSION	7
#define VV_VERSION	8
#define VV_LNUM		9
#define VV_TERMRESPONSE	10
#define VV_FNAME	11
#define VV_LANG		12
#define VV_LC_TIME	13
#define VV_CTYPE	14
#define VV_CC_FROM	15
#define VV_CC_TO	16
#define VV_FNAME_IN	17
#define VV_FNAME_OUT	18
#define VV_FNAME_NEW	19
#define VV_FNAME_DIFF	20
#define VV_CMDARG	21
#define VV_FOLDSTART	22
#define VV_FOLDEND	23
#define VV_FOLDDASHES	24
#define VV_FOLDLEVEL	25
#define VV_PROGNAME	26
#define VV_SEND_SERVER	27
#define VV_DYING	28
#define VV_EXCEPTION	29
#define VV_THROWPOINT	30
#define VV_REG		31
#define VV_CMDBANG	32
#define VV_INSERTMODE	33
#define VV_VAL		34
#define VV_KEY		35
#define VV_PROFILING	36
#define VV_FCS_REASON	37
#define VV_FCS_CHOICE	38
#define VV_BEVAL_BUFNR	39
#define VV_BEVAL_WINNR	40
#define VV_BEVAL_WINID	41
#define VV_BEVAL_LNUM	42
#define VV_BEVAL_COL	43
#define VV_BEVAL_TEXT	44
#define VV_SCROLLSTART	45
#define VV_SWAPNAME	46
#define VV_SWAPCHOICE	47
#define VV_SWAPCOMMAND	48
#define VV_CHAR		49
#define VV_MOUSE_WIN	50
#define VV_MOUSE_WINID	51
#define VV_MOUSE_LNUM   52
#define VV_MOUSE_COL	53
#define VV_OP		54
#define VV_SEARCHFORWARD 55
#define VV_HLSEARCH	56
#define VV_OLDFILES	57
#define VV_WINDOWID	58
#define VV_PROGPATH	59
#define VV_COMPLETED_ITEM 60
#define VV_OPTION_NEW   61
#define VV_OPTION_OLD   62
#define VV_OPTION_TYPE  63
#define VV_ERRORS	64
#define VV_FALSE	65
#define VV_TRUE		66
#define VV_NULL		67
#define VV_NONE		68
#define VV_VIM_DID_ENTER 69
#define VV_TESTING	70
#define VV_TYPE_NUMBER	71
#define VV_TYPE_STRING	72
#define VV_TYPE_FUNC	73
#define VV_TYPE_LIST	74
#define VV_TYPE_DICT	75
#define VV_TYPE_FLOAT	76
#define VV_TYPE_BOOL	77
#define VV_TYPE_NONE	78
#define VV_TYPE_JOB	79
#define VV_TYPE_CHANNEL	80
#define VV_TYPE_BLOB	81
#define VV_TERMRFGRESP	82
#define VV_TERMRBGRESP	83
#define VV_TERMU7RESP	84
#define VV_TERMSTYLERESP 85
#define VV_TERMBLINKRESP 86
#define VV_EVENT	87
#define VV_LEN		88	/* number of v: vars */

/* used for v_number in VAR_SPECIAL */
#define VVAL_FALSE	0L
#define VVAL_TRUE	1L
#define VVAL_NONE	2L
#define VVAL_NULL	3L

/* Type values for type(). */
#define VAR_TYPE_NUMBER	    0
#define VAR_TYPE_STRING	    1
#define VAR_TYPE_FUNC	    2
#define VAR_TYPE_LIST	    3
#define VAR_TYPE_DICT	    4
#define VAR_TYPE_FLOAT	    5
#define VAR_TYPE_BOOL	    6
#define VAR_TYPE_NONE	    7
#define VAR_TYPE_JOB	    8
#define VAR_TYPE_CHANNEL    9
#define VAR_TYPE_BLOB	    10

#ifdef FEAT_CLIPBOARD

/* VIM_ATOM_NAME is the older Vim-specific selection type for X11.  Still
 * supported for when a mix of Vim versions is used. VIMENC_ATOM_NAME includes
 * the encoding to support Vims using different 'encoding' values. */
# define VIM_ATOM_NAME "_VIM_TEXT"
# define VIMENC_ATOM_NAME "_VIMENC_TEXT"

/* Selection states for modeless selection */
# define SELECT_CLEARED		0
# define SELECT_IN_PROGRESS	1
# define SELECT_DONE		2

# define SELECT_MODE_CHAR	0
# define SELECT_MODE_WORD	1
# define SELECT_MODE_LINE	2

# ifdef FEAT_GUI_MSWIN
#  ifdef FEAT_OLE
#   define WM_OLE (WM_APP+0)
#  endif
# endif

/* Info about selected text */
typedef struct VimClipboard
{
    int		available;	/* Is clipboard available? */
    int		owned;		/* Flag: do we own the selection? */
    pos_T	start;		/* Start of selected area */
    pos_T	end;		/* End of selected area */
    int		vmode;		/* Visual mode character */

    /* Fields for selection that doesn't use Visual mode */
    short_u	origin_row;
    short_u	origin_start_col;
    short_u	origin_end_col;
    short_u	word_start_col;
    short_u	word_end_col;

    pos_T	prev;		/* Previous position */
    short_u	state;		/* Current selection state */
    short_u	mode;		/* Select by char, word, or line. */

# if defined(FEAT_GUI_X11) || defined(FEAT_XCLIPBOARD)
    Atom	sel_atom;	/* PRIMARY/CLIPBOARD selection ID */
# endif

# ifdef FEAT_GUI_GTK
    GdkAtom     gtk_sel_atom;	/* PRIMARY/CLIPBOARD selection ID */
# endif

# if defined(MSWIN) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
    int_u	format;		/* Vim's own special clipboard format */
    int_u	format_raw;	/* Vim's raw text clipboard format */
# endif
} VimClipboard;
#else
typedef int VimClipboard;	/* This is required for the prototypes. */
#endif

/* Use 64-bit stat structure if available. */
#if (defined(_MSC_VER) && (_MSC_VER >= 1300)) || defined(__MINGW32__)
# define HAVE_STAT64
typedef struct _stat64 stat_T;
#else
typedef struct stat stat_T;
#endif

#if defined(__GNUC__) && !defined(__MINGW32__)
# define USE_PRINTF_FORMAT_ATTRIBUTE
#endif

typedef enum
{
    ASSERT_EQUAL,
    ASSERT_NOTEQUAL,
    ASSERT_MATCH,
    ASSERT_NOTMATCH,
    ASSERT_OTHER
} assert_type_T;

/* Mode for bracketed_paste(). */
typedef enum {
    PASTE_INSERT,	/* insert mode */
    PASTE_CMDLINE,	/* command line */
    PASTE_EX,		/* ex mode line */
    PASTE_ONE_CHAR	/* return first character */
} paste_mode_T;

// Argument for flush_buffers().
typedef enum {
    FLUSH_MINIMAL,
    FLUSH_TYPEAHEAD,	// flush current typebuf contents
    FLUSH_INPUT		// flush typebuf and inchar() input
} flush_buffers_T;

#include "ex_cmds.h"	    /* Ex command defines */
#include "spell.h"	    /* spell checking stuff */

#include "proto.h"	    /* function prototypes */

/* This has to go after the include of proto.h, as proto/gui.pro declares
 * functions of these names. The declarations would break if the defines had
 * been seen at that stage.  But it must be before globals.h, where error_ga
 * is declared. */
#if !defined(MSWIN) && !defined(FEAT_GUI_X11) \
	&& !defined(FEAT_GUI_GTK) && !defined(FEAT_GUI_MAC) && !defined(PROTO)
# define mch_errmsg(str)	fprintf(stderr, "%s", (str))
# define display_errors()	fflush(stderr)
# define mch_msg(str)		printf("%s", (str))
#else
# define USE_MCH_ERRMSG
#endif

# if defined(FEAT_EVAL) \
	&& (!defined(FEAT_GUI_MSWIN) \
	     || !(defined(FEAT_MBYTE_IME) || defined(GLOBAL_IME))) \
	&& !(defined(FEAT_GUI_MAC) && defined(MACOS_CONVERT))
/* Whether IME is supported by im_get_status() defined in mbyte.c.
 * For Win32 GUI it's in gui_w32.c when FEAT_MBYTE_IME or GLOBAL_IME is defined.
 * for Mac it is in gui_mac.c for the GUI or in os_mac_conv.c when
 * MACOS_CONVERT is defined. */
# define IME_WITHOUT_XIM
#endif

#if defined(FEAT_XIM) \
	|| defined(IME_WITHOUT_XIM) \
	|| (defined(FEAT_GUI_MSWIN) \
	    && (defined(FEAT_MBYTE_IME) || defined(GLOBAL_IME))) \
	|| defined(FEAT_GUI_MAC)
/* im_set_active() is available */
# define HAVE_INPUT_METHOD
#endif

#ifndef FEAT_LINEBREAK
/* Without the 'numberwidth' option line numbers are always 7 chars. */
# define number_width(x) 7
#endif

/* This must come after including proto.h.
 * For VMS this is defined in macros.h. */
#if !defined(MSWIN) && !defined(VMS)
# define mch_open(n, m, p)	open((n), (m), (p))
# define mch_fopen(n, p)	fopen((n), (p))
#endif

#include "globals.h"	    /* global variables and messages */

/*
 * If console dialog not supported, but GUI dialog is, use the GUI one.
 */
#if defined(FEAT_GUI_DIALOG) && !defined(FEAT_CON_DIALOG)
# define do_dialog gui_mch_dialog
#endif

/*
 * Default filters for gui_mch_browse().
 * The filters are almost system independent.  Except for the difference
 * between "*" and "*.*" for MSDOS-like systems.
 * NOTE: Motif only uses the very first pattern.  Therefore
 * BROWSE_FILTER_DEFAULT should start with a "*" pattern.
 */
#ifdef FEAT_BROWSE
# ifdef BACKSLASH_IN_FILENAME
#  define BROWSE_FILTER_MACROS \
	(char_u *)N_("Vim macro files (*.vim)\t*.vim\nAll Files (*.*)\t*.*\n")
#  define BROWSE_FILTER_ALL_FILES (char_u *)N_("All Files (*.*)\t*.*\n")
#  define BROWSE_FILTER_DEFAULT \
	(char_u *)N_("All Files (*.*)\t*.*\nC source (*.c, *.h)\t*.c;*.h\nC++ source (*.cpp, *.hpp)\t*.cpp;*.hpp\nVB code (*.bas, *.frm)\t*.bas;*.frm\nVim files (*.vim, _vimrc, _gvimrc)\t*.vim;_vimrc;_gvimrc\n")
# else
#  define BROWSE_FILTER_MACROS \
	(char_u *)N_("Vim macro files (*.vim)\t*.vim\nAll Files (*)\t*\n")
#  define BROWSE_FILTER_ALL_FILES (char_u *)N_("All Files (*)\t*\n")
#  define BROWSE_FILTER_DEFAULT \
	(char_u *)N_("All Files (*)\t*\nC source (*.c, *.h)\t*.c;*.h\nC++ source (*.cpp, *.hpp)\t*.cpp;*.hpp\nVim files (*.vim, _vimrc, _gvimrc)\t*.vim;_vimrc;_gvimrc\n")
# endif
# define BROWSE_SAVE 1	    /* flag for do_browse() */
# define BROWSE_DIR 2	    /* flag for do_browse() */
#endif

/* stop using fastcall for Borland */
#if defined(__BORLANDC__) && defined(MSWIN) && !defined(DEBUG)
 #pragma option -p.
#endif

#ifdef _MSC_VER
/* Avoid useless warning "conversion from X to Y of greater size". */
 #pragma warning(disable : 4312)
/* Avoid warning for old style function declarators */
 #pragma warning(disable : 4131)
/* Avoid warning for conversion to type with smaller range */
 #pragma warning(disable : 4244)
/* Avoid warning for conversion to larger size */
 #pragma warning(disable : 4306)
/* Avoid warning for unreferenced formal parameter */
 #pragma warning(disable : 4100)
/* Avoid warning for differs in indirection to slightly different base type */
 #pragma warning(disable : 4057)
/* Avoid warning for constant conditional expression */
 #pragma warning(disable : 4127)
/* Avoid warning for assignment within conditional */
 #pragma warning(disable : 4706)
#endif

/* Note: a NULL argument for vim_realloc() is not portable, don't use it. */
#if defined(MEM_PROFILE)
# define vim_realloc(ptr, size)  mem_realloc((ptr), (size))
#else
# define vim_realloc(ptr, size)  realloc((ptr), (size))
#endif

/*
 * Return byte length of character that starts with byte "b".
 * Returns 1 for a single-byte character.
 * MB_BYTE2LEN_CHECK() can be used to count a special key as one byte.
 * Don't call MB_BYTE2LEN(b) with b < 0 or b > 255!
 */
#define MB_BYTE2LEN(b)		mb_bytelen_tab[b]
#define MB_BYTE2LEN_CHECK(b)	(((b) < 0 || (b) > 255) ? 1 : mb_bytelen_tab[b])

/* properties used in enc_canon_table[] (first three mutually exclusive) */
#define ENC_8BIT	0x01
#define ENC_DBCS	0x02
#define ENC_UNICODE	0x04

#define ENC_ENDIAN_B	0x10	    /* Unicode: Big endian */
#define ENC_ENDIAN_L	0x20	    /* Unicode: Little endian */

#define ENC_2BYTE	0x40	    /* Unicode: UCS-2 */
#define ENC_4BYTE	0x80	    /* Unicode: UCS-4 */
#define ENC_2WORD	0x100	    /* Unicode: UTF-16 */

#define ENC_LATIN1	0x200	    /* Latin1 */
#define ENC_LATIN9	0x400	    /* Latin9 */
#define ENC_MACROMAN	0x800	    /* Mac Roman (not Macro Man! :-) */

#ifdef USE_ICONV
# ifndef EILSEQ
#  define EILSEQ 123
# endif
# ifdef DYNAMIC_ICONV
/* On Win32 iconv.dll is dynamically loaded. */
#  define ICONV_ERRNO (*iconv_errno())
#  define ICONV_E2BIG  7
#  define ICONV_EINVAL 22
#  define ICONV_EILSEQ 42
# else
#  define ICONV_ERRNO errno
#  define ICONV_E2BIG  E2BIG
#  define ICONV_EINVAL EINVAL
#  define ICONV_EILSEQ EILSEQ
# endif
#endif

#define SIGN_BYTE 1	    /* byte value used where sign is displayed;
			       attribute value is sign type */

#ifdef FEAT_NETBEANS_INTG
# define MULTISIGN_BYTE 2   /* byte value used where sign is displayed if
			       multiple signs exist on the line */
#endif

#if defined(FEAT_GUI) && defined(FEAT_XCLIPBOARD)
# ifdef FEAT_GUI_GTK
   /* Avoid using a global variable for the X display.  It's ugly
    * and is likely to cause trouble in multihead environments. */
#  define X_DISPLAY	((gui.in_use) ? gui_mch_get_display() : xterm_dpy)
# else
#  define X_DISPLAY	(gui.in_use ? gui.dpy : xterm_dpy)
# endif
#else
# ifdef FEAT_GUI
#  ifdef FEAT_GUI_GTK
#   define X_DISPLAY	((gui.in_use) ? gui_mch_get_display() : (Display *)NULL)
#  else
#   define X_DISPLAY	gui.dpy
#  endif
# else
#  define X_DISPLAY	xterm_dpy
# endif
#endif

#if defined(FEAT_BROWSE) && defined(GTK_CHECK_VERSION)
# if GTK_CHECK_VERSION(2,4,0)
#  define USE_FILE_CHOOSER
# endif
#endif

#ifdef FEAT_GUI_GTK
# if !GTK_CHECK_VERSION(2,14,0)
#  define gtk_widget_get_window(wid)	((wid)->window)
#  define gtk_plug_get_socket_window(wid)	((wid)->socket_window)
#  define gtk_selection_data_get_data(sel)	((sel)->data)
#  define gtk_selection_data_get_data_type(sel)	((sel)->type)
#  define gtk_selection_data_get_format(sel)	((sel)->format)
#  define gtk_selection_data_get_length(sel)	((sel)->length)
#  define gtk_adjustment_set_lower(adj, low) \
    do { (adj)->lower = low; } while (0)
#  define gtk_adjustment_set_upper(adj, up) \
    do { (adj)->upper = up; } while (0)
#  define gtk_adjustment_set_page_size(adj, size) \
    do { (adj)->page_size = size; } while (0)
#  define gtk_adjustment_set_page_increment(adj, inc) \
    do { (adj)->page_increment = inc; } while (0)
#  define gtk_adjustment_set_step_increment(adj, inc) \
    do { (adj)->step_increment = inc; } while (0)
# endif
# if !GTK_CHECK_VERSION(2,16,0)
#  define gtk_selection_data_get_selection(sel)	((sel)->selection)
# endif
# if !GTK_CHECK_VERSION(2,18,0)
#  define gtk_widget_get_allocation(wid, alloc) \
    do { *(alloc) = (wid)->allocation; } while (0)
#  define gtk_widget_set_allocation(wid, alloc) \
    do { (wid)->allocation = *(alloc); } while (0)
#  define gtk_widget_get_has_window(wid)	!GTK_WIDGET_NO_WINDOW(wid)
#  define gtk_widget_get_sensitive(wid)	GTK_WIDGET_SENSITIVE(wid)
#  define gtk_widget_get_visible(wid)	GTK_WIDGET_VISIBLE(wid)
#  define gtk_widget_has_focus(wid)	GTK_WIDGET_HAS_FOCUS(wid)
#  define gtk_widget_set_window(wid, win) \
    do { (wid)->window = (win); } while (0)
#  define gtk_widget_set_can_default(wid, can) \
    do { if (can) { GTK_WIDGET_SET_FLAGS(wid, GTK_CAN_DEFAULT); } \
	else { GTK_WIDGET_UNSET_FLAGS(wid, GTK_CAN_DEFAULT); } } while (0)
#  define gtk_widget_set_can_focus(wid, can) \
    do { if (can) { GTK_WIDGET_SET_FLAGS(wid, GTK_CAN_FOCUS); } \
	else { GTK_WIDGET_UNSET_FLAGS(wid, GTK_CAN_FOCUS); } } while (0)
#  define gtk_widget_set_visible(wid, vis) \
    do { if (vis) { gtk_widget_show(wid); } \
	else { gtk_widget_hide(wid); } } while (0)
# endif
# if !GTK_CHECK_VERSION(2,20,0)
#  define gtk_widget_get_mapped(wid)	GTK_WIDGET_MAPPED(wid)
#  define gtk_widget_get_realized(wid)	GTK_WIDGET_REALIZED(wid)
#  define gtk_widget_set_mapped(wid, map) \
    do { if (map) { GTK_WIDGET_SET_FLAGS(wid, GTK_MAPPED); } \
	else { GTK_WIDGET_UNSET_FLAGS(wid, GTK_MAPPED); } } while (0)
#  define gtk_widget_set_realized(wid, rea) \
    do { if (rea) { GTK_WIDGET_SET_FLAGS(wid, GTK_REALIZED); } \
	else { GTK_WIDGET_UNSET_FLAGS(wid, GTK_REALIZED); } } while (0)
# endif
#endif

#ifndef FEAT_NETBEANS_INTG
# undef NBDEBUG
#endif
#ifdef NBDEBUG /* Netbeans debugging. */
# include "nbdebug.h"
#else
# define nbdebug(a)
#endif

#ifdef IN_PERL_FILE
  /*
   * Avoid clashes between Perl and Vim namespace.
   */
# undef NORMAL
# undef STRLEN
# undef FF
# undef OP_DELETE
# undef OP_JOIN
# ifdef __BORLANDC__
#  define NOPROTO 1
# endif
  /* remove MAX and MIN, included by glib.h, redefined by sys/param.h */
# ifdef MAX
#  undef MAX
# endif
# ifdef MIN
#  undef MIN
# endif
  /* We use _() for gettext(), Perl uses it for function prototypes... */
# ifdef _
#  undef _
# endif
# ifdef DEBUG
#  undef DEBUG
# endif
# ifdef _DEBUG
#  undef _DEBUG
# endif
# ifdef instr
#  undef instr
# endif
  /* bool may cause trouble on some old versions of Mac OS X but is required
   * on a few other systems and for Perl */
# if (defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6)) \
				       && defined(bool) && !defined(FEAT_PERL)
#  undef bool
# endif

# ifdef __BORLANDC__
  /* Borland has the structure stati64 but not _stati64 */
#  define _stati64 stati64
# endif
#endif

/* values for vim_handle_signal() that are not a signal */
#define SIGNAL_BLOCK	-1
#define SIGNAL_UNBLOCK  -2
#if !defined(UNIX) && !defined(VMS)
# define vim_handle_signal(x) 0
#endif

/* flags for skip_vimgrep_pat() */
#define VGR_GLOBAL	1
#define VGR_NOJUMP	2

/* behavior for bad character, "++bad=" argument */
#define BAD_REPLACE	'?'	/* replace it with '?' (default) */
#define BAD_KEEP	-1	/* leave it */
#define BAD_DROP	-2	/* erase it */

/* last argument for do_source() */
#define DOSO_NONE	0
#define DOSO_VIMRC	1	/* loading vimrc file */
#define DOSO_GVIMRC	2	/* loading gvimrc file */

/* flags for read_viminfo() and children */
#define VIF_WANT_INFO		1	/* load non-mark info */
#define VIF_WANT_MARKS		2	/* load file marks */
#define VIF_FORCEIT		4	/* overwrite info already read */
#define VIF_GET_OLDFILES	8	/* load v:oldfiles */

/* flags for buf_freeall() */
#define BFA_DEL		1	/* buffer is going to be deleted */
#define BFA_WIPE	2	/* buffer is going to be wiped out */
#define BFA_KEEP_UNDO	4	/* do not free undo information */

/* direction for nv_mousescroll() and ins_mousescroll() */
#define MSCR_DOWN	0	/* DOWN must be FALSE */
#define MSCR_UP		1
#define MSCR_LEFT	-1
#define MSCR_RIGHT	-2

#define KEYLEN_PART_KEY -1	/* keylen value for incomplete key-code */
#define KEYLEN_PART_MAP -2	/* keylen value for incomplete mapping */
#define KEYLEN_REMOVED  9999	/* keylen value for removed sequence */

/* Return values from win32_fileinfo(). */
#define FILEINFO_OK	     0
#define FILEINFO_ENC_FAIL    1	/* enc_to_utf16() failed */
#define FILEINFO_READ_FAIL   2	/* CreateFile() failed */
#define FILEINFO_INFO_FAIL   3	/* GetFileInformationByHandle() failed */

/* Return value from get_option_value_strict */
#define SOPT_BOOL	0x01	/* Boolean option */
#define SOPT_NUM	0x02	/* Number option */
#define SOPT_STRING	0x04	/* String option */
#define SOPT_GLOBAL	0x08	/* Option has global value */
#define SOPT_WIN	0x10	/* Option has window-local value */
#define SOPT_BUF	0x20	/* Option has buffer-local value */
#define SOPT_UNSET	0x40	/* Option does not have local value set */

/* Option types for various functions in option.c */
#define SREQ_GLOBAL	0	/* Request global option */
#define SREQ_WIN	1	/* Request window-local option */
#define SREQ_BUF	2	/* Request buffer-local option */

/* Flags for get_reg_contents */
#define GREG_NO_EXPR	1	/* Do not allow expression register */
#define GREG_EXPR_SRC	2	/* Return expression itself for "=" register */
#define GREG_LIST	4	/* Return list */

/* Character used as separated in autoload function/variable names. */
#define AUTOLOAD_CHAR '#'

#ifdef FEAT_JOB_CHANNEL
# define MAX_OPEN_CHANNELS 10
#else
# define MAX_OPEN_CHANNELS 0
#endif

#if defined(MSWIN)
# define MAX_NAMED_PIPE_SIZE 65535
#endif

/* Options for json_encode() and json_decode. */
#define JSON_JS		1   /* use JS instead of JSON */
#define JSON_NO_NONE	2   /* v:none item not allowed */
#define JSON_NL		4   /* append a NL */

/* Used for flags of do_in_path() */
#define DIP_ALL	    0x01	/* all matches, not just the first one */
#define DIP_DIR	    0x02	/* find directories instead of files. */
#define DIP_ERR	    0x04	/* give an error message when none found. */
#define DIP_START   0x08	/* also use "start" directory in 'packpath' */
#define DIP_OPT	    0x10	/* also use "opt" directory in 'packpath' */
#define DIP_NORTP   0x20	/* do not use 'runtimepath' */
#define DIP_NOAFTER 0x40	/* skip "after" directories */
#define DIP_AFTER   0x80	/* only use "after" directories */

/* Lowest number used for window ID. Cannot have this many windows. */
#define LOWEST_WIN_ID 1000

/* Used by the garbage collector. */
#define COPYID_INC 2
#define COPYID_MASK (~0x1)

/* Values for trans_function_name() argument: */
#define TFN_INT		1	/* internal function name OK */
#define TFN_QUIET	2	/* no error messages */
#define TFN_NO_AUTOLOAD	4	/* do not use script autoloading */
#define TFN_NO_DEREF	8	/* do not dereference a Funcref */
#define TFN_READ_ONLY	16	/* will not change the var */

/* Values for get_lval() flags argument: */
#define GLV_QUIET	TFN_QUIET	/* no error messages */
#define GLV_NO_AUTOLOAD	TFN_NO_AUTOLOAD	/* do not use script autoloading */
#define GLV_READ_ONLY	TFN_READ_ONLY	/* will not change the var */

#define DO_NOT_FREE_CNT 99999	/* refcount for dict or list that should not
				   be freed. */

/* errors for when calling a function */
#define ERROR_UNKNOWN	0
#define ERROR_TOOMANY	1
#define ERROR_TOOFEW	2
#define ERROR_SCRIPT	3
#define ERROR_DICT	4
#define ERROR_NONE	5
#define ERROR_OTHER	6
#define ERROR_DELETED	7

/* flags for find_name_end() */
#define FNE_INCL_BR	1	/* include [] in name */
#define FNE_CHECK_START	2	/* check name starts with valid character */

/* BSD is supposed to cover FreeBSD and similar systems. */
#if (defined(SUN_SYSTEM) || defined(BSD) || defined(__FreeBSD_kernel__)) \
	&& (defined(S_ISCHR) || defined(S_IFCHR))
# define OPEN_CHR_FILES
#endif

/* stat macros */
#ifndef S_ISDIR
# ifdef S_IFDIR
#  define S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)
# else
#  define S_ISDIR(m)	0
# endif
#endif
#ifndef S_ISREG
# ifdef S_IFREG
#  define S_ISREG(m)	(((m) & S_IFMT) == S_IFREG)
# else
#  define S_ISREG(m)	0
# endif
#endif
#ifndef S_ISBLK
# ifdef S_IFBLK
#  define S_ISBLK(m)	(((m) & S_IFMT) == S_IFBLK)
# else
#  define S_ISBLK(m)	0
# endif
#endif
#ifndef S_ISSOCK
# ifdef S_IFSOCK
#  define S_ISSOCK(m)	(((m) & S_IFMT) == S_IFSOCK)
# else
#  define S_ISSOCK(m)	0
# endif
#endif
#ifndef S_ISFIFO
# ifdef S_IFIFO
#  define S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)
# else
#  define S_ISFIFO(m)	0
# endif
#endif
#ifndef S_ISCHR
# ifdef S_IFCHR
#  define S_ISCHR(m)	(((m) & S_IFMT) == S_IFCHR)
# else
#  define S_ISCHR(m)	0
# endif
#endif
#ifndef S_ISLNK
# ifdef S_IFLNK
#  define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)
# else
#  define S_ISLNK(m)	0
# endif
#endif

#if defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H)
# define ELAPSED_TIMEVAL
# define ELAPSED_INIT(v) gettimeofday(&v, NULL)
# define ELAPSED_FUNC(v) elapsed(&v)
typedef struct timeval elapsed_T;
long elapsed(struct timeval *start_tv);
#elif defined(MSWIN)
# define ELAPSED_TICKCOUNT
# define ELAPSED_INIT(v) v = GetTickCount()
# define ELAPSED_FUNC(v) elapsed(v)
# ifdef PROTO
typedef int DWORD;
# endif
typedef DWORD elapsed_T;
# ifndef PROTO
long elapsed(DWORD start_tick);
# endif
#endif

/* Replacement for nchar used by nv_replace(). */
#define REPLACE_CR_NCHAR    -1
#define REPLACE_NL_NCHAR    -2

/* flags for term_start() */
#define TERM_START_NOJOB	1
#define TERM_START_FORCEIT	2
#define TERM_START_SYSTEM	4

// Used for icon/title save and restore.
#define SAVE_RESTORE_TITLE	1
#define SAVE_RESTORE_ICON	2
#define SAVE_RESTORE_BOTH	(SAVE_RESTORE_TITLE | SAVE_RESTORE_ICON)

#endif /* VIM__H */