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annotate src/testdir/test_const.vim @ 22298:07e48ee8c3bb v8.2.1698

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patch 8.2.1698: cannot lock a variable in legacy Vim script like in Vim9 Commit: https://github.com/vim/vim/commit/a187c43cfe8863d48b2159d695fedcb71f8525c1 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 16 21:08:28 2020 +0200 patch 8.2.1698: cannot lock a variable in legacy Vim script like in Vim9 Problem: Cannot lock a variable in legacy Vim script like in Vim9. Solution: Make ":lockvar 0" work.
author Bram Moolenaar <Bram@vim.org>
date Wed, 16 Sep 2020 21:15:05 +0200
parents ff21e2962490
children 04205b7d67d5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 " Test for :const
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2
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3 func s:noop()
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4 endfunc
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5
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6 func Test_define_var_with_lock()
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7 const i = 1
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8 const f = 1.1
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9 const s = 'vim'
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10 const F = funcref('s:noop')
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11 const l = [1, 2, 3]
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12 const d = {'foo': 10}
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13 if has('channel')
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14 const j = test_null_job()
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15 const c = test_null_channel()
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16 endif
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17 const b = v:true
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18 const n = v:null
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19 const bl = 0zC0FFEE
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20 const here =<< trim EOS
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21 hello
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22 EOS
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23
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24 call assert_true(exists('i'))
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25 call assert_true(exists('f'))
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26 call assert_true(exists('s'))
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27 call assert_true(exists('F'))
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28 call assert_true(exists('l'))
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29 call assert_true(exists('d'))
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30 if has('channel')
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31 call assert_true(exists('j'))
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32 call assert_true(exists('c'))
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33 endif
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34 call assert_true(exists('b'))
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35 call assert_true(exists('n'))
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36 call assert_true(exists('bl'))
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37 call assert_true(exists('here'))
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38
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39 call assert_fails('let i = 1', 'E741:')
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40 call assert_fails('let f = 1.1', 'E741:')
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41 call assert_fails('let s = "vim"', 'E741:')
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42 call assert_fails('let F = funcref("s:noop")', 'E741:')
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43 call assert_fails('let l = [1, 2, 3]', 'E741:')
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44 call assert_fails('call filter(l, "v:val % 2 == 0")', 'E741:')
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45 call assert_fails('let d = {"foo": 10}', 'E741:')
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46 if has('channel')
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47 call assert_fails('let j = test_null_job()', 'E741:')
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48 call assert_fails('let c = test_null_channel()', 'E741:')
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49 endif
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50 call assert_fails('let b = v:true', 'E741:')
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51 call assert_fails('let n = v:null', 'E741:')
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52 call assert_fails('let bl = 0zC0FFEE', 'E741:')
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53 call assert_fails('let here = "xxx"', 'E741:')
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54
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55 " Unlet
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56 unlet i
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57 unlet f
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58 unlet s
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59 unlet F
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60 unlet l
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61 unlet d
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62 if has('channel')
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63 unlet j
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64 unlet c
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65 endif
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66 unlet b
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67 unlet n
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68 unlet bl
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69 unlet here
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70 endfunc
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71
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72 func Test_define_l_var_with_lock()
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73 " With l: prefix
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74 const l:i = 1
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75 const l:f = 1.1
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76 const l:s = 'vim'
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77 const l:F = funcref('s:noop')
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78 const l:l = [1, 2, 3]
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79 const l:d = {'foo': 10}
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80 if has('channel')
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81 const l:j = test_null_job()
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82 const l:c = test_null_channel()
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83 endif
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84 const l:b = v:true
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85 const l:n = v:null
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86 const l:bl = 0zC0FFEE
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87 const l:here =<< trim EOS
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88 hello
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89 EOS
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90
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91 call assert_fails('let l:i = 1', 'E741:')
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92 call assert_fails('let l:f = 1.1', 'E741:')
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93 call assert_fails('let l:s = "vim"', 'E741:')
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94 call assert_fails('let l:F = funcref("s:noop")', 'E741:')
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95 call assert_fails('let l:l = [1, 2, 3]', 'E741:')
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96 call assert_fails('let l:d = {"foo": 10}', 'E741:')
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97 if has('channel')
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98 call assert_fails('let l:j = test_null_job()', 'E741:')
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99 call assert_fails('let l:c = test_null_channel()', 'E741:')
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100 endif
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101 call assert_fails('let l:b = v:true', 'E741:')
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102 call assert_fails('let l:n = v:null', 'E741:')
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103 call assert_fails('let l:bl = 0zC0FFEE', 'E741:')
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104 call assert_fails('let l:here = "xxx"', 'E741:')
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105
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106 " Unlet
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107 unlet l:i
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108 unlet l:f
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109 unlet l:s
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110 unlet l:F
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111 unlet l:l
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112 unlet l:d
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113 if has('channel')
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114 unlet l:j
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115 unlet l:c
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116 endif
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117 unlet l:b
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118 unlet l:n
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119 unlet l:bl
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120 unlet l:here
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121 endfunc
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122
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123 func Test_define_script_var_with_lock()
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124 const s:x = 0
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125 call assert_fails('let s:x = 1', 'E741:')
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126 unlet s:x
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127 endfunc
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128
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129 func Test_destructuring_with_lock()
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130 const [a, b, c] = [1, 1.1, 'vim']
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131
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132 call assert_fails('let a = 1', 'E741:')
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133 call assert_fails('let b = 1.1', 'E741:')
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134 call assert_fails('let c = "vim"', 'E741:')
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135
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136 const [d; e] = [1, 1.1, 'vim']
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137 call assert_fails('let d = 1', 'E741:')
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138 call assert_fails('let e = [2.2, "a"]', 'E741:')
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139 endfunc
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140
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141 func Test_cannot_modify_existing_variable()
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142 let i = 1
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143 let f = 1.1
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144 let s = 'vim'
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145 let F = funcref('s:noop')
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146 let l = [1, 2, 3]
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147 let d = {'foo': 10}
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148 if has('channel')
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149 let j = test_null_job()
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150 let c = test_null_channel()
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151 endif
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152 let b = v:true
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153 let n = v:null
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154 let bl = 0zC0FFEE
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155
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156 call assert_fails('const i = 1', 'E995:')
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157 call assert_fails('const f = 1.1', 'E995:')
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158 call assert_fails('const s = "vim"', 'E995:')
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159 call assert_fails('const F = funcref("s:noop")', 'E995:')
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160 call assert_fails('const l = [1, 2, 3]', 'E995:')
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161 call assert_fails('const d = {"foo": 10}', 'E995:')
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162 if has('channel')
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163 call assert_fails('const j = test_null_job()', 'E995:')
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164 call assert_fails('const c = test_null_channel()', 'E995:')
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165 endif
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166 call assert_fails('const b = v:true', 'E995:')
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167 call assert_fails('const n = v:null', 'E995:')
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168 call assert_fails('const bl = 0zC0FFEE', 'E995:')
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169 call assert_fails('const [i, f, s] = [1, 1.1, "vim"]', 'E995:')
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170
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171 const i2 = 1
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172 const f2 = 1.1
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173 const s2 = 'vim'
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174 const F2 = funcref('s:noop')
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175 const l2 = [1, 2, 3]
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176 const d2 = {'foo': 10}
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177 if has('channel')
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178 const j2 = test_null_job()
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179 const c2 = test_null_channel()
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180 endif
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181 const b2 = v:true
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182 const n2 = v:null
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183 const bl2 = 0zC0FFEE
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184
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185 call assert_fails('const i2 = 1', 'E995:')
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186 call assert_fails('const f2 = 1.1', 'E995:')
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187 call assert_fails('const s2 = "vim"', 'E995:')
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188 call assert_fails('const F2 = funcref("s:noop")', 'E995:')
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189 call assert_fails('const l2 = [1, 2, 3]', 'E995:')
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190 call assert_fails('const d2 = {"foo": 10}', 'E995:')
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191 if has('channel')
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192 call assert_fails('const j2 = test_null_job()', 'E995:')
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193 call assert_fails('const c2 = test_null_channel()', 'E995:')
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194 endif
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195 call assert_fails('const b2 = v:true', 'E995:')
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196 call assert_fails('const n2 = v:null', 'E995:')
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197 call assert_fails('const bl2 = 0zC0FFEE', 'E995:')
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198 call assert_fails('const [i2, f2, s2] = [1, 1.1, "vim"]', 'E995:')
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199 endfunc
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200
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201 func Test_const_with_condition()
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202 const x = 0
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203 if 0 | const x = 1 | endif
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204 call assert_equal(0, x)
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205 endfunc
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206
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207 func Test_lockvar()
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208 let x = 'hello'
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209 lockvar x
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210 call assert_fails('let x = "there"', 'E741:')
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211 if 0 | unlockvar x | endif
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212 call assert_fails('let x = "there"', 'E741:')
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213 unlockvar x
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214 let x = 'there'
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215
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216 if 0 | lockvar x | endif
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217 let x = 'again'
22298
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218
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219 let val = [1, 2, 3]
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220 lockvar 0 val
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221 let val[0] = 9
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222 call assert_equal([9, 2, 3], val)
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223 call add(val, 4)
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224 call assert_equal([9, 2, 3, 4], val)
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225 call assert_fails('let val = [4, 5, 6]', 'E1122:')
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226 endfunc
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227
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228
17079
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229 func Test_const_with_index_access()
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230 let l = [1, 2, 3]
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231 call assert_fails('const l[0] = 4', 'E996:')
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232 call assert_fails('const l[0:1] = [1, 2]', 'E996:')
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233
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234 let d = {'aaa': 0}
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235 call assert_fails("const d['aaa'] = 4", 'E996:')
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236 call assert_fails("const d.aaa = 4", 'E996:')
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237 endfunc
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238
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239 func Test_const_with_compound_assign()
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240 let i = 0
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241 call assert_fails('const i += 4', 'E995:')
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242 call assert_fails('const i -= 4', 'E995:')
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243 call assert_fails('const i *= 4', 'E995:')
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244 call assert_fails('const i /= 4', 'E995:')
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245 call assert_fails('const i %= 4', 'E995:')
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246
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247 let s = 'a'
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248 call assert_fails('const s .= "b"', 'E995:')
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249
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250 let [a, b, c] = [1, 2, 3]
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251 call assert_fails('const [a, b, c] += [4, 5, 6]', 'E995:')
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252
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253 let [d; e] = [1, 2, 3]
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254 call assert_fails('const [d; e] += [4, 5, 6]', 'E995:')
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255 endfunc
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256
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257 func Test_const_with_special_variables()
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258 call assert_fails('const $FOO = "hello"', 'E996:')
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259 call assert_fails('const @a = "hello"', 'E996:')
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260 call assert_fails('const &filetype = "vim"', 'E996:')
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261 call assert_fails('const &l:filetype = "vim"', 'E996:')
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262 call assert_fails('const &g:encoding = "utf-8"', 'E996:')
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263
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264 call assert_fails('const [a, $CONST_FOO] = [369, "abc"]', 'E996:')
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265 call assert_equal(369, a)
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266 call assert_equal(v:null, getenv("CONST_FOO"))
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267
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268 call assert_fails('const [b; $CONST_FOO] = [246, 2, "abc"]', 'E996:')
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269 call assert_equal(246, b)
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270 call assert_equal(v:null, getenv("CONST_FOO"))
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271 endfunc
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272
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273 func Test_const_with_eval_name()
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274 let s = 'foo'
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275
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276 " eval name with :const should work
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277 const abc_{s} = 1
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278 const {s}{s} = 1
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279
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280 let s2 = 'abc_foo'
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281 call assert_fails('const {s2} = "bar"', 'E995:')
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282 endfunc
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283
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284 func Test_lock_depth_is_2()
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285 " Modify list - error when changing item or adding/removing items
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286 const l = [1, 2, [3, 4]]
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287 call assert_fails('let l[0] = 42', 'E741:')
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288 call assert_fails('let l[2][0] = 42', 'E741:')
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289 call assert_fails('call add(l, 4)', 'E741:')
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290 call assert_fails('unlet l[1]', 'E741:')
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291
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292 " Modify blob - error when changing
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293 const b = 0z001122
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294 call assert_fails('let b[0] = 42', 'E741:')
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295
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296 " Modify dict - error when changing item or adding/removing items
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297 const d = {'foo': 10}
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298 call assert_fails("let d['foo'] = 'hello'", 'E741:')
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299 call assert_fails("let d.foo = 'hello'", 'E741:')
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300 call assert_fails("let d['bar'] = 'hello'", 'E741:')
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301 call assert_fails("unlet d['foo']", 'E741:')
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302
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303 " Modifying list or dict item contents is OK.
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304 let lvar = ['a', 'b']
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305 let bvar = 0z1122
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306 const l2 = [0, lvar, bvar]
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307 let l2[1][0] = 'c'
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308 let l2[2][1] = 0x33
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309 call assert_equal([0, ['c', 'b'], 0z1133], l2)
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310
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311 const d2 = #{a: 0, b: lvar, c: 4}
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312 let d2.b[1] = 'd'
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313 endfunc
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314
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315 " vim: shiftwidth=2 sts=2 expandtab