annotate src/macros.h @ 20569:b6a0237e8478 v8.2.0838

patch 8.2.0838: MS-Windows: compiler warning for uninitialized variables Commit: https://github.com/vim/vim/commit/09307e3bc1423d5e8a05464b94717a948d6c059a Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 29 21:42:55 2020 +0200 patch 8.2.0838: MS-Windows: compiler warning for uninitialized variables Problem: MS-Windows: compiler warning for uninitialized variables. Solution: Initialize variables.
author Bram Moolenaar <Bram@vim.org>
date Fri, 29 May 2020 21:45:04 +0200
parents 4c317d8c1051
children 8a2b86a39ef4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* vi:set ts=8 sts=4 sw=4 noet:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 */
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8
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9 /*
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10 * macros.h: macro definitions for often used code
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11 *
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12 * Macros should be ALL_CAPS. An exception is for where a function is
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13 * replaced and an argument is not used more than once.
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14 */
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15
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16 /*
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17 * PBYTE(lp, c) - put byte 'c' at position 'lp'
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18 */
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19 #define PBYTE(lp, c) (*(ml_get_buf(curbuf, (lp).lnum, TRUE) + (lp).col) = (c))
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20
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21 /*
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22 * Position comparisons
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23 */
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24 #define LT_POS(a, b) (((a).lnum != (b).lnum) \
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25 ? (a).lnum < (b).lnum \
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26 : (a).col != (b).col \
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27 ? (a).col < (b).col \
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28 : (a).coladd < (b).coladd)
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29 #define LT_POSP(a, b) (((a)->lnum != (b)->lnum) \
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30 ? (a)->lnum < (b)->lnum \
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31 : (a)->col != (b)->col \
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32 ? (a)->col < (b)->col \
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33 : (a)->coladd < (b)->coladd)
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34 #define EQUAL_POS(a, b) (((a).lnum == (b).lnum) && ((a).col == (b).col) && ((a).coladd == (b).coladd))
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35 #define CLEAR_POS(a) do {(a)->lnum = 0; (a)->col = 0; (a)->coladd = 0;} while (0)
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36
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37 #define LTOREQ_POS(a, b) (LT_POS(a, b) || EQUAL_POS(a, b))
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38
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39 /*
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40 * VIM_ISWHITE() differs from isspace() because it doesn't include <CR> and
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41 * <LF> and the like.
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42 */
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43 #define VIM_ISWHITE(x) ((x) == ' ' || (x) == '\t')
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44 #define IS_WHITE_OR_NUL(x) ((x) == ' ' || (x) == '\t' || (x) == NUL)
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45
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46 /*
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47 * LINEEMPTY() - return TRUE if the line is empty
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48 */
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49 #define LINEEMPTY(p) (*ml_get(p) == NUL)
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50
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51 /*
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52 * BUFEMPTY() - return TRUE if the current buffer is empty
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53 */
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54 #define BUFEMPTY() (curbuf->b_ml.ml_line_count == 1 && *ml_get((linenr_T)1) == NUL)
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55
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56 /*
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57 * toupper() and tolower() that use the current locale.
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58 * On some systems toupper()/tolower() only work on lower/uppercase
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59 * characters, first use islower() or isupper() then.
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60 * Careful: Only call TOUPPER_LOC() and TOLOWER_LOC() with a character in the
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61 * range 0 - 255. toupper()/tolower() on some systems can't handle others.
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62 * Note: It is often better to use MB_TOLOWER() and MB_TOUPPER(), because many
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63 * toupper() and tolower() implementations only work for ASCII.
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64 */
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65 #ifdef MSWIN
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66 # define TOUPPER_LOC(c) toupper_tab[(c) & 255]
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67 # define TOLOWER_LOC(c) tolower_tab[(c) & 255]
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68 #else
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69 # ifdef BROKEN_TOUPPER
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70 # define TOUPPER_LOC(c) (islower(c) ? toupper(c) : (c))
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71 # define TOLOWER_LOC(c) (isupper(c) ? tolower(c) : (c))
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72 # else
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73 # define TOUPPER_LOC toupper
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74 # define TOLOWER_LOC tolower
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75 # endif
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76 #endif
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77
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78 // toupper() and tolower() for ASCII only and ignore the current locale.
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79 #ifdef EBCDIC
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80 # define TOUPPER_ASC(c) (islower(c) ? toupper(c) : (c))
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81 # define TOLOWER_ASC(c) (isupper(c) ? tolower(c) : (c))
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82 #else
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83 # define TOUPPER_ASC(c) (((c) < 'a' || (c) > 'z') ? (c) : (c) - ('a' - 'A'))
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84 # define TOLOWER_ASC(c) (((c) < 'A' || (c) > 'Z') ? (c) : (c) + ('a' - 'A'))
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85 #endif
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86
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87 /*
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88 * MB_ISLOWER() and MB_ISUPPER() are to be used on multi-byte characters. But
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89 * don't use them for negative values!
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90 */
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91 #define MB_ISLOWER(c) vim_islower(c)
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92 #define MB_ISUPPER(c) vim_isupper(c)
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93 #define MB_TOLOWER(c) vim_tolower(c)
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94 #define MB_TOUPPER(c) vim_toupper(c)
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95
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96 // Use our own isdigit() replacement, because on MS-Windows isdigit() returns
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97 // non-zero for superscript 1. Also avoids that isdigit() crashes for numbers
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98 // below 0 and above 255.
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99 #define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
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100
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101 // Like isalpha() but reject non-ASCII characters. Can't be used with a
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102 // special key (negative value).
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103 #ifdef EBCDIC
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104 # define ASCII_ISALPHA(c) isalpha(c)
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105 # define ASCII_ISALNUM(c) isalnum(c)
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106 # define ASCII_ISLOWER(c) islower(c)
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107 # define ASCII_ISUPPER(c) isupper(c)
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108 #else
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109 # define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
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110 # define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
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111 # define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
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112 # define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))
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113 #endif
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114
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115 // Returns empty string if it is NULL.
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116 #define EMPTY_IF_NULL(x) ((x) ? (x) : (char_u *)"")
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117
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118 #ifdef FEAT_LANGMAP
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119 /*
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120 * Adjust chars in a language according to 'langmap' option.
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121 * NOTE that there is no noticeable overhead if 'langmap' is not set.
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122 * When set the overhead for characters < 256 is small.
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123 * Don't apply 'langmap' if the character comes from the Stuff buffer or from
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124 * a mapping and the langnoremap option was set.
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125 * The do-while is just to ignore a ';' after the macro.
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126 */
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127 # define LANGMAP_ADJUST(c, condition) \
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128 do { \
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129 if (*p_langmap \
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130 && (condition) \
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131 && (p_lrm || (!p_lrm && KeyTyped)) \
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132 && !KeyStuffed \
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133 && (c) >= 0) \
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134 { \
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135 if ((c) < 256) \
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136 c = langmap_mapchar[c]; \
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137 else \
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138 c = langmap_adjust_mb(c); \
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139 } \
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140 } while (0)
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141 #else
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142 # define LANGMAP_ADJUST(c, condition) // nop
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143 #endif
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144
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145 /*
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146 * VIM_ISBREAK() is used very often if 'linebreak' is set, use a macro to make
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147 * it work fast. Only works for single byte characters!
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148 */
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149 #define VIM_ISBREAK(c) ((c) < 256 && breakat_flags[(char_u)(c)])
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150
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151 /*
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152 * On VMS file names are different and require a translation.
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153 * On the Mac open() has only two arguments.
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154 */
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155 #ifdef VMS
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156 # define mch_access(n, p) access(vms_fixfilename(n), (p))
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157 // see mch_open() comment
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158 # define mch_fopen(n, p) fopen(vms_fixfilename(n), (p))
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159 # define mch_fstat(n, p) fstat(vms_fixfilename(n), (p))
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160 // VMS does not have lstat()
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161 # define mch_stat(n, p) stat(vms_fixfilename(n), (p))
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162 # define mch_rmdir(n) rmdir(vms_fixfilename(n))
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163 #else
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164 # ifndef MSWIN
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165 # define mch_access(n, p) access((n), (p))
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166 # endif
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167 # define mch_fstat(n, p) fstat((n), (p))
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168 # ifdef MSWIN // has its own mch_stat() function
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169 # define mch_stat(n, p) vim_stat((n), (p))
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170 # else
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171 # ifdef STAT_IGNORES_SLASH
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172 # define mch_stat(n, p) vim_stat((n), (p))
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173 # else
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174 # define mch_stat(n, p) stat((n), (p))
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175 # endif
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176 # endif
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177 #endif
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178
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179 #ifdef HAVE_LSTAT
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180 # define mch_lstat(n, p) lstat((n), (p))
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181 #else
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182 # define mch_lstat(n, p) mch_stat((n), (p))
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183 #endif
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184
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185 #ifdef VMS
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186 /*
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187 * It is possible to force some record format with:
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188 * # define mch_open(n, m, p) open(vms_fixfilename(n), (m), (p)), "rat=cr", "rfm=stmlf", "mrs=0")
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189 * but it is not recommended, because it can destroy indexes etc.
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190 */
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191 # define mch_open(n, m, p) open(vms_fixfilename(n), (m), (p))
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192 #endif
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193
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194 // mch_open_rw(): invoke mch_open() with third argument for user R/W.
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195 #if defined(UNIX) || defined(VMS) // open in rw------- mode
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196 # define mch_open_rw(n, f) mch_open((n), (f), (mode_t)0600)
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197 #else
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198 # if defined(MSWIN) // open read/write
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199 # define mch_open_rw(n, f) mch_open((n), (f), S_IREAD | S_IWRITE)
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200 # else
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201 # define mch_open_rw(n, f) mch_open((n), (f), 0)
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202 # endif
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203 #endif
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204
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205 #ifdef STARTUPTIME
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206 # define TIME_MSG(s) do { if (time_fd != NULL) time_msg(s, NULL); } while (0)
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207 #else
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208 # define TIME_MSG(s) do { /**/ } while (0)
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209 #endif
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210
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211 #define REPLACE_NORMAL(s) (((s) & REPLACE_FLAG) && !((s) & VREPLACE_FLAG))
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212
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213 #ifdef FEAT_ARABIC
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214 # define ARABIC_CHAR(ch) (((ch) & 0xFF00) == 0x0600)
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215 # define UTF_COMPOSINGLIKE(p1, p2) utf_composinglike((p1), (p2))
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216 #else
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217 # define UTF_COMPOSINGLIKE(p1, p2) utf_iscomposing(utf_ptr2char(p2))
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218 #endif
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219
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220 #ifdef FEAT_RIGHTLEFT
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221 // Whether to draw the vertical bar on the right side of the cell.
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222 # define CURSOR_BAR_RIGHT (curwin->w_p_rl && (!(State & CMDLINE) || cmdmsg_rl))
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223 #endif
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224
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225 /*
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226 * MB_PTR_ADV(): advance a pointer to the next character, taking care of
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227 * multi-byte characters if needed.
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228 * MB_PTR_BACK(): backup a pointer to the previous character, taking care of
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229 * multi-byte characters if needed.
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230 * MB_COPY_CHAR(f, t): copy one char from "f" to "t" and advance the pointers.
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231 * PTR2CHAR(): get character from pointer.
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232 */
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233 // Advance multi-byte pointer, skip over composing chars.
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234 #define MB_PTR_ADV(p) p += (*mb_ptr2len)(p)
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235 // Advance multi-byte pointer, do not skip over composing chars.
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236 #define MB_CPTR_ADV(p) p += enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p)
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237 // Backup multi-byte pointer. Only use with "p" > "s" !
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238 #define MB_PTR_BACK(s, p) p -= has_mbyte ? ((*mb_head_off)(s, p - 1) + 1) : 1
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239 // get length of multi-byte char, not including composing chars
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240 #define MB_CPTR2LEN(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
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241
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242 #define MB_COPY_CHAR(f, t) do { if (has_mbyte) mb_copy_char(&f, &t); else *t++ = *f++; } while (0)
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243 #define MB_CHARLEN(p) (has_mbyte ? mb_charlen(p) : (int)STRLEN(p))
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244 #define MB_CHAR2LEN(c) (has_mbyte ? mb_char2len(c) : 1)
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245 #define PTR2CHAR(p) (has_mbyte ? mb_ptr2char(p) : (int)*(p))
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246
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247 #ifdef FEAT_AUTOCHDIR
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248 # define DO_AUTOCHDIR do { if (p_acd) do_autochdir(); } while (0)
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249 #else
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250 # define DO_AUTOCHDIR do { /**/ } while (0)
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251 #endif
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252
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253 #define RESET_BINDING(wp) do { (wp)->w_p_scb = FALSE; (wp)->w_p_crb = FALSE; \
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254 } while (0)
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255
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256 #ifdef FEAT_DIFF
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257 # define PLINES_NOFILL(x) plines_nofill(x)
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258 #else
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259 # define PLINES_NOFILL(x) plines(x)
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260 #endif
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261
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262 #if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER)
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263 # define MESSAGE_QUEUE
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264 #endif
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265
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266 #if defined(FEAT_EVAL) && defined(FEAT_FLOAT)
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267 # include <float.h>
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268 # if defined(HAVE_MATH_H)
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269 // for isnan() and isinf()
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270 # include <math.h>
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271 # endif
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272 # ifdef USING_FLOAT_STUFF
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273 # ifdef MSWIN
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274 # ifndef isnan
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275 # define isnan(x) _isnan(x)
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276 static __inline int isinf(double x) { return !_finite(x) && !_isnan(x); }
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277 # endif
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278 # else
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279 # ifndef HAVE_ISNAN
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280 static inline int isnan(double x) { return x != x; }
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281 # endif
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282 # ifndef HAVE_ISINF
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283 static inline int isinf(double x) { return !isnan(x) && isnan(x - x); }
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284 # endif
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285 # endif
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286 # if !defined(INFINITY)
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287 # if defined(DBL_MAX)
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288 # ifdef VMS
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289 # define INFINITY DBL_MAX
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290 # else
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291 # define INFINITY (DBL_MAX+DBL_MAX)
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292 # endif
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293 # else
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294 # define INFINITY (1.0 / 0.0)
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295 # endif
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296 # endif
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297 # if !defined(NAN)
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298 # define NAN (INFINITY-INFINITY)
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299 # endif
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300 # if !defined(DBL_EPSILON)
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301 # define DBL_EPSILON 2.2204460492503131e-16
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302 # endif
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303 # endif
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304 #endif
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305
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306 #ifdef FEAT_EVAL
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307 # define FUNCARG(fp, j) ((char_u **)(fp->uf_args.ga_data))[j]
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308 #endif
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309
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310 /*
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311 * In a hashtab item "hi_key" points to "di_key" in a dictitem.
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312 * This avoids adding a pointer to the hashtab item.
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313 * DI2HIKEY() converts a dictitem pointer to a hashitem key pointer.
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314 * HIKEY2DI() converts a hashitem key pointer to a dictitem pointer.
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315 * HI2DI() converts a hashitem pointer to a dictitem pointer.
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316 */
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317 #define DI2HIKEY(di) ((di)->di_key)
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318 #define HIKEY2DI(p) ((dictitem_T *)(p - offsetof(dictitem_T, di_key)))
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319 #define HI2DI(hi) HIKEY2DI((hi)->hi_key)
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320
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321 /*
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322 * Flush control functions.
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323 */
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324 #ifdef FEAT_GUI
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325 # define mch_enable_flush() gui_enable_flush()
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326 # define mch_disable_flush() gui_disable_flush()
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327 #else
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328 # define mch_enable_flush()
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329 # define mch_disable_flush()
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330 #endif
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331
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332 /*
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333 * Like vim_free(), and also set the pointer to NULL.
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334 */
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335 #define VIM_CLEAR(p) \
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336 do { \
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337 if ((p) != NULL) { \
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338 vim_free(p); \
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339 (p) = NULL; \
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340 } \
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341 } while (0)
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342
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343 // Whether a command index indicates a user command.
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344 #define IS_USER_CMDIDX(idx) ((int)(idx) < 0)
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345
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346 // Give an error in curwin is a popup window and evaluate to TRUE.
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347 #ifdef FEAT_PROP_POPUP
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348 # define WIN_IS_POPUP(wp) ((wp)->w_popup_flags != 0)
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349 # define ERROR_IF_POPUP_WINDOW error_if_popup_window(FALSE)
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350 # define ERROR_IF_ANY_POPUP_WINDOW error_if_popup_window(TRUE)
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351 #else
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352 # define WIN_IS_POPUP(wp) 0
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353 # define ERROR_IF_POPUP_WINDOW 0
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354 # define ERROR_IF_ANY_POPUP_WINDOW 0
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355 #endif
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356 #if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL)
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357 # define ERROR_IF_TERM_POPUP_WINDOW error_if_term_popup_window()
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358 #else
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359 # define ERROR_IF_TERM_POPUP_WINDOW 0
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360 #endif
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361
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362
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363 #ifdef ABORT_ON_INTERNAL_ERROR
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364 # define ESTACK_CHECK_DECLARATION int estack_len_before;
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365 # define ESTACK_CHECK_SETUP estack_len_before = exestack.ga_len;
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366 # define ESTACK_CHECK_NOW if (estack_len_before != exestack.ga_len) \
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367 siemsg("Exestack length expected: %d, actual: %d", estack_len_before, exestack.ga_len);
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368 # define CHECK_CURBUF if (curwin != NULL && curwin->w_buffer != curbuf) \
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369 iemsg("curbuf != curwin->w_buffer")
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370 #else
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371 # define ESTACK_CHECK_DECLARATION
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372 # define ESTACK_CHECK_SETUP
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373 # define ESTACK_CHECK_NOW
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374 # define CHECK_CURBUF
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375 #endif
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376
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377 // Inline the condition for performance.
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378 #define CHECK_LIST_MATERIALIZE(l) if ((l)->lv_first == &range_list_item) range_list_materialize(l)
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379
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380 // Inlined version of ga_grow(). Especially useful if "n" is a constant.
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381 #define GA_GROW(gap, n) (((gap)->ga_maxlen - (gap)->ga_len < n) ? ga_grow_inner((gap), (n)) : OK)