struct Tcl_Event *nextPtr;	/* Next in list of pending events, or NULL. */
};

/*
 * Positions to pass to Tcl_QueueEvent/Tcl_ThreadQueueEvent:
 */

typedef enum Tcl_QueuePosition {
    TCL_QUEUE_TAIL, TCL_QUEUE_HEAD, TCL_QUEUE_MARK,
    TCL_QUEUE_ALERT_IF_EMPTY=4
} Tcl_QueuePosition;

/*
 * Values to pass to Tcl_SetServiceMode to specify the behavior of notifier
 * event routines.

				 * stack. */
};

/*
 * Source instruction type recognized by the assembler.
 */

typedef enum TalInstType {
    ASSEM_1BYTE,		/* Fixed arity, 1-byte instruction */
    ASSEM_BEGIN_CATCH,		/* Begin catch: one 4-byte jump offset to be
				 * converted to appropriate exception
				 * ranges */
    ASSEM_BOOL,			/* One Boolean operand */
    ASSEM_BOOL_LVT,		/* One Boolean, one 4-byte LVT ref. */
    ASSEM_CLOCK_READ,		/* 1-byte unsigned-integer case number, in the

{
    Tcl_Obj *resultObj = NULL;
    unsigned char *data, *datastart, *dataend;
    unsigned char *begin, *cursor, c;
    int i, index, value, pure = 1, strict = 0;
    Tcl_Size size, cut = 0, count = 0;
    int ucs4;
    enum Option { OPT_STRICT };
    static const char *const optStrings[] = { "-strict", NULL };

    if (objc < 2 || objc > 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "?options? data");
	return TCL_ERROR;
    }
    for (i = 1; i < objc - 1; ++i) {

    Tcl_Obj *resultObj;
    unsigned char *data, *limit;
    Tcl_WideInt maxlen = 0;
    const char *wrapchar = "\n";
    Tcl_Size wrapcharlen = 1;
    int index, purewrap = 1;
    Tcl_Size i, offset, size, outindex = 0, count = 0;
    enum Option { OPT_MAXLEN, OPT_WRAPCHAR };
    static const char *const optStrings[] = { "-maxlen", "-wrapchar", NULL };

    if (objc < 2 || objc % 2 != 0) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"?-maxlen len? ?-wrapchar char? data");
	return TCL_ERROR;
    }

    unsigned char *data, *start, *cursor;
    int i, bits;
    unsigned int n;
    int lineLength = 61;
    const unsigned char SingleNewline[] = { UCHAR('\n') };
    const unsigned char *wrapchar = SingleNewline;
    Tcl_Size j, rawLength, offset, count = 0, wrapcharlen = sizeof(SingleNewline);
    enum Option { OPT_MAXLEN, OPT_WRAPCHAR } index;
    static const char *const optStrings[] = { "-maxlen", "-wrapchar", NULL };

    if (objc < 2 || objc % 2 != 0) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"?-maxlen len? ?-wrapchar char? data");
	return TCL_ERROR;
    }

    Tcl_Obj *resultObj = NULL;
    unsigned char *data, *datastart, *dataend;
    unsigned char *begin, *cursor;
    int i, index, pure = 1, strict = 0, lineLen;
    Tcl_Size size, count = 0;
    unsigned char c;
    int ucs4;
    enum Option { OPT_STRICT };
    static const char *const optStrings[] = { "-strict", NULL };

    if (objc < 2 || objc > 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "?options? data");
	return TCL_ERROR;
    }
    for (i = 1; i < objc - 1; ++i) {

    unsigned char *data, *datastart, *dataend, c = '\0';
    unsigned char *begin = NULL;
    unsigned char *cursor = NULL;
    int pure = 1, strict = 0;
    int i, index, cut = 0;
    Tcl_Size size, count = 0;
    int ucs4;
    enum Option { OPT_STRICT };
    static const char *const optStrings[] = { "-strict", NULL };

    if (objc < 2 || objc > 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "?options? data");
	return TCL_ERROR;
    }
    for (i = 1; i < objc - 1; ++i) {

/*
 * Definitions for [lseq] command
 */
static const char *const seq_operations[] = {
    "..", "to", "count", "by", NULL
};
typedef enum SequenceOperators {
    LSEQ_DOTS, LSEQ_TO, LSEQ_COUNT, LSEQ_BY
} SequenceOperators;
typedef enum SequenceDecoded {
    NoneArg, NumericArg, RangeKeywordArg, ErrArg, LastArg = 8
} SequenceDecoded;

/*
 * Forward declarations for procedures defined in this file:
 */

 * break command is executed, the ExceptionRange structure for the most deeply
 * nested loop, if any, is found and used. These structures are also generated
 * for the "next" subcommands of for loops since a break there terminates the
 * for command. This means a for command actually generates two LoopInfo
 * structures.
 */

typedef enum ExceptionRangeType {
    LOOP_EXCEPTION_RANGE,	/* Exception's range is part of a loop. Break
				 * and continue "exceptions" cause jumps to
				 * appropriate PC offsets. */
    CATCH_EXCEPTION_RANGE	/* Exception's range is controlled by a catch
				 * command. Errors in the range cause a jump
				 * to a catch PC offset. */
} ExceptionRangeType;

 * target PC. When we learn the target PC, we update the jumps with the
 * correct distance. Also, if the distance is too great (> 127 bytes), we
 * replace the single-byte jump with a four byte jump instruction, move the
 * instructions after the jump down, and update the code offsets for any
 * commands between the jump and the target.
 */

typedef enum TclJumpType {
    TCL_UNCONDITIONAL_JUMP,
    TCL_TRUE_JUMP,
    TCL_FALSE_JUMP
} TclJumpType;

typedef struct JumpFixup {
    TclJumpType jumpType;	/* Indicates the kind of jump. */

    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel inChan, outChan;
    int mode, i, index;
    Tcl_WideInt toRead;
    Tcl_Obj *cmdPtr;
    static const char *const switches[] = { "-size", "-command", NULL };
    enum FcopySwitch { FcopySize, FcopyCommand };

    if ((objc < 3) || (objc > 7) || (objc == 4) || (objc == 6)) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"input output ?-size size? ?-command callback?");
	return TCL_ERROR;
    }

/*
 * Event literals. ==================================================
 */

static const char *const eventOptions[] = {
    "read", "write", NULL
};
typedef enum EventOption {
    EVENT_READ, EVENT_WRITE
} EventOption;

/*
 * Method literals. ==================================================
 */

    "read",		/* OPT */
    "seek",		/* OPT */
    "truncate",		/* OPT */
    "watch",		/*     */
    "write",		/* OPT */
    NULL
};
typedef enum MethodName {
    METH_BLOCKING,
    METH_CGET,
    METH_CGETALL,
    METH_CONFIGURE,
    METH_FINAL,
    METH_INIT,
    METH_READ,

 * send'.
 */

/*
 * Enumeration of all operations which can be forwarded.
 */

typedef enum ForwardedOperation {
    ForwardedClose,
    ForwardedInput,
    ForwardedOutput,
    ForwardedSeek,
    ForwardedWatch,
    ForwardedBlock,
    ForwardedSetOpt,

    "flush",		/* OPT, flush => write */
    "initialize",	/*     */
    "limit?",		/* OPT */
    "read",		/* OPT */
    "write",		/* OPT */
    NULL
};
typedef enum MethodName {
    METH_CLEAR,
    METH_DRAIN,
    METH_FINAL,
    METH_FLUSH,
    METH_INIT,
    METH_LIMIT,
    METH_READ,

 * send'.
 */

/*
 * Enumeration of all operations which can be forwarded.
 */

typedef enum ForwardedOperation {
    ForwardedClear,
    ForwardedClose,
    ForwardedDrain,
    ForwardedFlush,
    ForwardedInput,
    ForwardedLimit,
    ForwardedOutput

    U_ZERO_ERRORZ = 0, /**< No error, no warning. */
    U_BUFFER_OVERFLOW_ERROR = 15,
} UErrorCodex;

#define U_SUCCESS(x) ((x)<=U_ZERO_ERRORZ)
#define U_FAILURE(x) ((x)>U_ZERO_ERRORZ)

typedef enum UConverterCallbackReasonx {
    UCNV_UNASSIGNED = 0,
    UCNV_ILLEGAL = 1,
    UCNV_IRREGULAR = 2,
    UCNV_RESET = 3,
    UCNV_CLOSE = 4,
    UCNV_CLONE = 5
} UConverterCallbackReasonx;

#define unorm2_getNFKDInstance icu_fns._unorm2_getNFKDInstance
#define unorm2_normalize       icu_fns._unorm2_normalize

TCL_DECLARE_MUTEX(icu_mutex);

/* Options used by multiple normalization functions */
static const char *normalizationForms[] = {"nfc", "nfd", "nfkc", "nfkd", NULL};
typedef enum NormalizationMode {
    MODE_NFC, MODE_NFD, MODE_NFKC, MODE_NFKD
} NormalizationMode;

/* Error handlers. */

static int
FunctionNotAvailableError(
    Tcl_Interp *interp)
{

	return TCL_ERROR;
    }
    objc -= 2; /* truncate fixed arguments */

    /* Use GetIndexFromObj for option parsing so -failindex can be added later */

    static const char *optNames[] = {"-profile", "-failindex", NULL};
    enum Option { OPT_PROFILE, OPT_FAILINDEX } opt;
    int i;
    int strict = 1;
    for (i = 1; i < objc; ++i) {
	if (Tcl_GetIndexFromObj(
		interp, objv[i], optNames, "option", 0, &opt) != TCL_OK) {
	    return TCL_ERROR;
	}

IcuNormalizeObjCmd(
    TCL_UNUSED(void *),
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    static const char *optNames[] = {"-profile", "-mode", NULL};
    enum Option { OPT_PROFILE, OPT_MODE } opt;

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "?-profile PROFILE? ?-mode MODE? STRING");
	return TCL_ERROR;
    }

    int i;

    Tcl_Size numParameters;	/* Cached number of parameters. This is either
				 * 0 (if the parameterList field is NULL) or
				 * the length of the list in the parameterList
				 * field. */
} EnsembleConfig;

/*
 * Various bits for the EnsembleConfig::flags field.
 */
enum EnsembleConfigFlags {
    ENSEMBLE_DEAD = 0x1,	/* Flag value to say that the ensemble is dead
				 * and on its way out. */
    ENSEMBLE_COMPILE = 0x4	/* Flag to enable bytecode compilation of an
				 * ensemble. */
};

				 * however, if the TCL_CANCEL_UNWIND flag is
				 * set Tcl_Canceled will continue to report
				 * that the script in progress has been
				 * canceled thereby allowing the evaluation
				 * stack for the interp to be fully unwound. */
};

#ifndef MAX_NESTING_DEPTH
/*
 * Default maximum number of levels of nesting permitted in Tcl commands (used
 * to catch infinite recursion).
 */
#define MAX_NESTING_DEPTH	1000
#endif

/*
 * The macro below is used to modify a "char" value (e.g. by casting it to an
 * unsigned character) so that it can be used safely with macros such as
 * isspace.
 */

	"unable to alloc %" TCL_Z_MODIFIER "u bytes", (size_t)(size)), 1)))

/*
 * The following enum values are used to specify the runtime platform setting
 * of the tclPlatform variable.
 */

typedef enum TclPlatformType {
    TCL_PLATFORM_UNIX = 0,	/* Any Unix-like OS. */
    TCL_PLATFORM_WINDOWS = 2	/* Any Microsoft Windows OS. */
} TclPlatformType;

/*
 * The following enum values are used to indicate the translation of a Tcl
 * channel. Declared here so that each platform can define

    Tcl_Size numUsed;		/* Number of slots in use (starting firstUsed) */
    Tcl_Size numAllocated;	/* Total number of slots[] array slots. */
    size_t refCount;		/* Number of references to this instance. */
    int flags;			/* LISTSTORE_* flags */
    Tcl_Obj *slots[TCLFLEXARRAY];
				/* Variable size array. Grown as needed */
} ListStore;

enum ListStoreFlags {
    LISTSTORE_CANONICAL = 0x1	/* All Tcl_Obj's referencing this
				 * store have their string representation
				 * derived from the list representation */
};

/* Max number of elements that can be contained in a list */
#define LIST_MAX \
    ((Tcl_Size)(((size_t)TCL_SIZE_MAX - offsetof(ListStore, slots))	\

/*
 * Structure definition for information used to keep the state of an
 * interactive command processor that reads lines from standard input and
 * writes prompts and results to standard output.
 */

typedef enum PromptType {
    PROMPT_NONE,		/* Print no prompt */
    PROMPT_START,		/* Print prompt for command start */
    PROMPT_CONTINUE		/* Print prompt for command continuation */
} PromptType;

typedef struct {
    Tcl_Channel input;		/* The standard input channel from which lines

    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    static const char *const opts[] = {
	"-command", "-variable", NULL
    };
    enum WhichOpt { OPT_COMMAND, OPT_VARIABLE } lookupType = OPT_COMMAND;
    Tcl_Obj *resultPtr;

    if (objc < 2 || objc > 3) {
    badArgs:
	Tcl_WrongNumArgs(interp, 1, objv, "?-command? ?-variable? name");
	return TCL_ERROR;
    } else if (objc == 3) {

	    /*
	     * Continuation lines coming before the string and affecting us
	     * should not happen, due to the proper maintenance of clNext
	     * during compilation.
	     */

	    if (clLocPtr->loc[i] <= CLL_END) {
		Tcl_Panic("Derived ICL data for object using offsets from before the script");
	    }
	}
    }
}

/*

    static const char *const subcommands[] = {
	"new",
	"describe",
	"config",
	"validate",
	NULL
    };
    enum Subcommand {
	LISTREP_NEW,
	LISTREP_DESCRIBE,
	LISTREP_CONFIG,
	LISTREP_VALIDATE
    } cmdIndex;
    Tcl_Obj *resultObj = NULL;

    NULL,			/* freeIntRepProc */
    NULL,			/* dupIntRepProc */
    UpdateStringOfOSType,	/* updateStringProc */
    SetOSTypeFromAny,		/* setFromAnyProc */
    TCL_OBJTYPE_V0
};

enum TclMacosxMagicConstants {
    kIsInvisible = 0x4000,
};

#define kFinfoIsInvisible	(OSSwapHostToBigConstInt16(kIsInvisible))

typedef	struct finderinfo {
    u_int32_t type;

    TcpFdList *fds = NULL, *newfds;

    /*
     * Try to record and return the most meaningful error message, i.e. the
     * one from the first socket that went the farthest before it failed.
     */

    enum Status { LOOKUP, SOCKET, BIND, LISTEN } howfar = LOOKUP;
    int my_errno = 0;

    /*
     * If we were called with port 0 to listen on a random port number, we
     * copy the port number from the first member of the addrinfo list to all
     * subsequent members, so that IPv4 and IPv6 listen on the same port. This
     * might fail to bind() with EADDRINUSE if a port is free on the first

#endif
    /*
     * Quote flags:
     *   CL_ESCAPE   - escape argument;
     *   CL_QUOTE    - enclose in quotes;
     *   CL_UNPAIRED - previous arguments chain contains unpaired quote-char;
     */
    enum QuoteFlags {CL_ESCAPE = 1, CL_QUOTE = 2, CL_UNPAIRED = 4};

    Tcl_DStringInit(&ds);

    /*
     * Prime the path. Add a space separator if we were primed with something.
     */