#define PBYTE(lp, c) (*(ml_get_buf(curbuf, (lp).lnum, TRUE) + (lp).col) = (c))
#define LT_POS(a, b) (((a).lnum != (b).lnum) \
? (a).lnum < (b).lnum \
: (a).col != (b).col \
? (a).col < (b).col \
: (a).coladd < (b).coladd)
#define LT_POSP(a, b) (((a)->lnum != (b)->lnum) \
? (a)->lnum < (b)->lnum \
: (a)->col != (b)->col \
? (a)->col < (b)->col \
: (a)->coladd < (b)->coladd)
#define EQUAL_POS(a, b) (((a).lnum == (b).lnum) && ((a).col == (b).col) && ((a).coladd == (b).coladd))
#define CLEAR_POS(a) do {(a)->lnum = 0; (a)->col = 0; (a)->coladd = 0;} while (0)
#define LTOREQ_POS(a, b) (LT_POS(a, b) || EQUAL_POS(a, b))
#define VIM_ISWHITE(x) ((x) == ' ' || (x) == '\t')
#define IS_WHITE_OR_NUL(x) ((x) == ' ' || (x) == '\t' || (x) == NUL)
#define LINEEMPTY(p) (*ml_get(p) == NUL)
#define BUFEMPTY() (curbuf->b_ml.ml_line_count == 1 && *ml_get((linenr_T)1) == NUL)
#ifdef MSWIN
# define TOUPPER_LOC(c) toupper_tab[(c) & 255]
# define TOLOWER_LOC(c) tolower_tab[(c) & 255]
#else
# ifdef BROKEN_TOUPPER
# define TOUPPER_LOC(c) (islower(c) ? toupper(c) : (c))
# define TOLOWER_LOC(c) (isupper(c) ? tolower(c) : (c))
# else
# define TOUPPER_LOC toupper
# define TOLOWER_LOC tolower
# endif
#endif
#ifdef EBCDIC
# define TOUPPER_ASC(c) (islower(c) ? toupper(c) : (c))
# define TOLOWER_ASC(c) (isupper(c) ? tolower(c) : (c))
#else
# define TOUPPER_ASC(c) (((c) < 'a' || (c) > 'z') ? (c) : (c) - ('a' - 'A'))
# define TOLOWER_ASC(c) (((c) < 'A' || (c) > 'Z') ? (c) : (c) + ('a' - 'A'))
#endif
#define MB_ISLOWER(c) vim_islower(c)
#define MB_ISUPPER(c) vim_isupper(c)
#define MB_TOLOWER(c) vim_tolower(c)
#define MB_TOUPPER(c) vim_toupper(c)
#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
#ifdef EBCDIC
# define ASCII_ISALPHA(c) isalpha(c)
# define ASCII_ISALNUM(c) isalnum(c)
# define ASCII_ISLOWER(c) islower(c)
# define ASCII_ISUPPER(c) isupper(c)
#else
# define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
# define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
# define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
# define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))
#endif
#define EMPTY_IF_NULL(x) ((x) ? (x) : (char_u *)"")
#ifdef FEAT_LANGMAP
# define LANGMAP_ADJUST(c, condition) \
do { \
if (*p_langmap \
&& (condition) \
&& (p_lrm || (!p_lrm && KeyTyped)) \
&& !KeyStuffed \
&& (c) >= 0) \
{ \
if ((c) < 256) \
c = langmap_mapchar[c]; \
else \
c = langmap_adjust_mb(c); \
} \
} while (0)
#else
# define LANGMAP_ADJUST(c, condition) // nop
#endif
#define VIM_ISBREAK(c) ((c) < 256 && breakat_flags[(char_u)(c)])
#ifdef VMS
# define mch_access(n, p) access(vms_fixfilename(n), (p))
# define mch_fopen(n, p) fopen(vms_fixfilename(n), (p))
# define mch_fstat(n, p) fstat(vms_fixfilename(n), (p))
# define mch_stat(n, p) stat(vms_fixfilename(n), (p))
# define mch_rmdir(n) rmdir(vms_fixfilename(n))
#else
# ifndef MSWIN
# define mch_access(n, p) access((n), (p))
# endif
# define mch_fstat(n, p) fstat((n), (p))
# ifdef MSWIN // has its own mch_stat() function
# define mch_stat(n, p) vim_stat((n), (p))
# else
# ifdef STAT_IGNORES_SLASH
# define mch_stat(n, p) vim_stat((n), (p))
# else
# define mch_stat(n, p) stat((n), (p))
# endif
# endif
#endif
#ifdef HAVE_LSTAT
# define mch_lstat(n, p) lstat((n), (p))
#else
# define mch_lstat(n, p) mch_stat((n), (p))
#endif
#ifdef VMS
# define mch_open(n, m, p) open(vms_fixfilename(n), (m), (p))
#endif
#if defined(UNIX) || defined(VMS) // open in rw------- mode
# define mch_open_rw(n, f) mch_open((n), (f), (mode_t)0600)
#else
# if defined(MSWIN) // open read/write
# define mch_open_rw(n, f) mch_open((n), (f), S_IREAD | S_IWRITE)
# else
# define mch_open_rw(n, f) mch_open((n), (f), 0)
# endif
#endif
#ifdef STARTUPTIME
# define TIME_MSG(s) do { if (time_fd != NULL) time_msg(s, NULL); } while (0)
#else
# define TIME_MSG(s) do { } while (0)
#endif
#define REPLACE_NORMAL(s) (((s) & REPLACE_FLAG) && !((s) & VREPLACE_FLAG))
#ifdef FEAT_ARABIC
# define ARABIC_CHAR(ch) (((ch) & 0xFF00) == 0x0600)
# define UTF_COMPOSINGLIKE(p1, p2) utf_composinglike((p1), (p2))
#else
# define UTF_COMPOSINGLIKE(p1, p2) utf_iscomposing(utf_ptr2char(p2))
#endif
#ifdef FEAT_RIGHTLEFT
# define CURSOR_BAR_RIGHT (curwin->w_p_rl && (!(State & CMDLINE) || cmdmsg_rl))
#endif
#define MB_PTR_ADV(p) p += (*mb_ptr2len)(p)
#define MB_CPTR_ADV(p) p += enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p)
#define MB_PTR_BACK(s, p) p -= has_mbyte ? ((*mb_head_off)(s, p - 1) + 1) : 1
#define MB_CPTR2LEN(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
#define MB_COPY_CHAR(f, t) do { if (has_mbyte) mb_copy_char(&f, &t); else *t++ = *f++; } while (0)
#define MB_CHARLEN(p) (has_mbyte ? mb_charlen(p) : (int)STRLEN(p))
#define MB_CHAR2LEN(c) (has_mbyte ? mb_char2len(c) : 1)
#define PTR2CHAR(p) (has_mbyte ? mb_ptr2char(p) : (int)*(p))
#ifdef FEAT_AUTOCHDIR
# define DO_AUTOCHDIR do { if (p_acd) do_autochdir(); } while (0)
#else
# define DO_AUTOCHDIR do { } while (0)
#endif
#define RESET_BINDING(wp) do { (wp)->w_p_scb = FALSE; (wp)->w_p_crb = FALSE; \
} while (0)
#ifdef FEAT_DIFF
# define PLINES_NOFILL(x) plines_nofill(x)
#else
# define PLINES_NOFILL(x) plines(x)
#endif
#if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER)
# define MESSAGE_QUEUE
#endif
#if defined(FEAT_EVAL) && defined(FEAT_FLOAT)
# include <float.h>
# if defined(HAVE_MATH_H)
# include <math.h>
# endif
# ifdef USING_FLOAT_STUFF
# ifdef MSWIN
# ifndef isnan
# define isnan(x) _isnan(x)
static __inline int isinf(double x) { return !_finite(x) && !_isnan(x); }
# endif
# else
# ifndef HAVE_ISNAN
static inline int isnan(double x) { return x != x; }
# endif
# ifndef HAVE_ISINF
static inline int isinf(double x) { return !isnan(x) && isnan(x - x); }
# endif
# endif
# if !defined(INFINITY)
# if defined(DBL_MAX)
# ifdef VMS
# define INFINITY DBL_MAX
# else
# define INFINITY (DBL_MAX+DBL_MAX)
# endif
# else
# define INFINITY (1.0 / 0.0)
# endif
# endif
# if !defined(NAN)
# define NAN (INFINITY-INFINITY)
# endif
# if !defined(DBL_EPSILON)
# define DBL_EPSILON 2.2204460492503131e-16
# endif
# endif
#endif
#ifdef FEAT_EVAL
# define FUNCARG(fp, j) ((char_u **)(fp->uf_args.ga_data))[j]
#endif
#define DI2HIKEY(di) ((di)->di_key)
#define HIKEY2DI(p) ((dictitem_T *)(p - offsetof(dictitem_T, di_key)))
#define HI2DI(hi) HIKEY2DI((hi)->hi_key)
#ifdef FEAT_GUI
# define mch_enable_flush() gui_enable_flush()
# define mch_disable_flush() gui_disable_flush()
#else
# define mch_enable_flush()
# define mch_disable_flush()
#endif
#define VIM_CLEAR(p) \
do { \
if ((p) != NULL) { \
vim_free(p); \
(p) = NULL; \
} \
} while (0)
#define IS_USER_CMDIDX(idx) ((int)(idx) < 0)
#ifdef FEAT_PROP_POPUP
# define WIN_IS_POPUP(wp) ((wp)->w_popup_flags != 0)
# define ERROR_IF_POPUP_WINDOW error_if_popup_window(FALSE)
# define ERROR_IF_ANY_POPUP_WINDOW error_if_popup_window(TRUE)
#else
# define WIN_IS_POPUP(wp) 0
# define ERROR_IF_POPUP_WINDOW 0
# define ERROR_IF_ANY_POPUP_WINDOW 0
#endif
#if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL)
# define ERROR_IF_TERM_POPUP_WINDOW error_if_term_popup_window()
#else
# define ERROR_IF_TERM_POPUP_WINDOW 0
#endif
#ifdef ABORT_ON_INTERNAL_ERROR
# define ESTACK_CHECK_DECLARATION int estack_len_before;
# define ESTACK_CHECK_SETUP estack_len_before = exestack.ga_len;
# define ESTACK_CHECK_NOW if (estack_len_before != exestack.ga_len) \
siemsg("Exestack length expected: %d, actual: %d", estack_len_before, exestack.ga_len);
# define CHECK_CURBUF if (curwin != NULL && curwin->w_buffer != curbuf) \
iemsg("curbuf != curwin->w_buffer")
#else
# define ESTACK_CHECK_DECLARATION
# define ESTACK_CHECK_SETUP
# define ESTACK_CHECK_NOW
# define CHECK_CURBUF
#endif
#define CHECK_LIST_MATERIALIZE(l) if ((l)->lv_first == &range_list_item) range_list_materialize(l)
#define GA_GROW(gap, n) (((gap)->ga_maxlen - (gap)->ga_len < n) ? ga_grow_inner((gap), (n)) : OK)