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annotate src/testdir/test_listener.vim @ 16660:04c2614af21c v8.1.1332

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patch 8.1.1332: cannot flush listeners without redrawing, mix of changes commit https://github.com/vim/vim/commit/fe1ade0a78a70a4c7ddaebb6964497f037f4997a Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 14 21:20:36 2019 +0200 patch 8.1.1332: cannot flush listeners without redrawing, mix of changes Problem: Cannot flush change listeners without also redrawing. The line numbers in the list of changes may become invalid. Solution: Add listener_flush(). Invoke listeners before adding a change that makes line numbers invalid.
author Bram Moolenaar <Bram@vim.org>
date Tue, 14 May 2019 21:30:06 +0200
parents b8fda384605b
children 978bcd70883d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
16638
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1 " tests for listener_add() and listener_remove()
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2
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3 func s:StoreList(l)
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4 let s:list = a:l
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5 endfunc
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6
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7 func s:AnotherStoreList(l)
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8 let s:list2 = a:l
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9 endfunc
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10
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11 func s:EvilStoreList(l)
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12 let s:list3 = a:l
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13 call assert_fails("call add(a:l, 'myitem')", "E742:")
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14 endfunc
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15
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16 func Test_listening()
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17 new
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18 call setline(1, ['one', 'two'])
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19 let s:list = []
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20 let id = listener_add({b, s, e, a, l -> s:StoreList(l)})
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21 call setline(1, 'one one')
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22 call listener_flush()
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23 call assert_equal([{'lnum': 1, 'end': 2, 'col': 1, 'added': 0}], s:list)
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24
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25 " Undo is also a change
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26 set undolevels& " start new undo block
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27 call append(2, 'two two')
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28 undo
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29 redraw
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30 " the two changes get merged
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31 call assert_equal([{'lnum': 3, 'end': 4, 'col': 1, 'added': 0}], s:list)
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32 1
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33
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34 " Two listeners, both get called. Also check column.
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35 call setline(1, ['one one', 'two'])
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36 call listener_flush()
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37 let id2 = listener_add({b, s, e, a, l -> s:AnotherStoreList(l)})
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38 let s:list = []
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39 let s:list2 = []
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40 exe "normal $asome\<Esc>"
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41 redraw
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42 call assert_equal([{'lnum': 1, 'end': 2, 'col': 8, 'added': 0}], s:list)
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43 call assert_equal([{'lnum': 1, 'end': 2, 'col': 8, 'added': 0}], s:list2)
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44
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45 " removing listener works
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46 call listener_remove(id2)
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47 call setline(1, ['one one', 'two'])
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48 call listener_flush()
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49 let s:list = []
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50 let s:list2 = []
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51 call setline(3, 'three')
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52 redraw
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53 call assert_equal([{'lnum': 3, 'end': 3, 'col': 1, 'added': 1}], s:list)
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54 call assert_equal([], s:list2)
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55
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56 " a change above a previous change without a line number change is reported
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57 " together
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58 call setline(1, ['one one', 'two'])
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59 call listener_flush()
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60 call append(2, 'two two')
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61 call setline(1, 'something')
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62 call listener_flush()
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63 call assert_equal([{'lnum': 3, 'end': 3, 'col': 1, 'added': 1},
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64 \ {'lnum': 1, 'end': 2, 'col': 1, 'added': 0}], s:list)
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65
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66 " an insert just above a previous change that was the last one gets merged
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67 call setline(1, ['one one', 'two'])
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68 call listener_flush()
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69 call setline(2, 'something')
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70 call append(1, 'two two')
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71 call listener_flush()
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72 call assert_equal([{'lnum': 2, 'end': 3, 'col': 1, 'added': 1}], s:list)
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73
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74 " an insert above a previous change causes a flush
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75 call setline(1, ['one one', 'two'])
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76 call listener_flush()
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77 call setline(2, 'something')
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78 call append(0, 'two two')
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79 call assert_equal([{'lnum': 2, 'end': 3, 'col': 1, 'added': 0}], s:list)
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80 call listener_flush()
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81 call assert_equal([{'lnum': 1, 'end': 1, 'col': 1, 'added': 1}], s:list)
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82
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83 " the "o" command first adds an empty line and then changes it
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84 %del
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85 call setline(1, ['one one', 'two'])
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86 call listener_flush()
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87 let s:list = []
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88 exe "normal Gofour\<Esc>"
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89 redraw
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90 call assert_equal([{'lnum': 3, 'end': 3, 'col': 1, 'added': 1},
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91 \ {'lnum': 3, 'end': 4, 'col': 1, 'added': 0}], s:list)
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92
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93 " Remove last listener
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94 let s:list = []
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95 call listener_remove(id)
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96 call setline(1, 'asdfasdf')
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97 redraw
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98 call assert_equal([], s:list)
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99
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100 " Trying to change the list fails
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101 let id = listener_add({b, s, e, a, l -> s:EvilStoreList(l)})
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102 let s:list3 = []
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103 call setline(1, 'asdfasdf')
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104 redraw
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105 call assert_equal([{'lnum': 1, 'end': 2, 'col': 1, 'added': 0}], s:list3)
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106
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107 call listener_remove(id)
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108 bwipe!
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109 endfunc
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110
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111 func s:StoreListArgs(buf, start, end, added, list)
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112 let s:buf = a:buf
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113 let s:start = a:start
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114 let s:end = a:end
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115 let s:added = a:added
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116 let s:list = a:list
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117 endfunc
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118
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119 func Test_listener_args()
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120 new
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121 call setline(1, ['one', 'two'])
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122 let s:list = []
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123 let id = listener_add('s:StoreListArgs')
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124
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125 " just one change
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126 call setline(1, 'one one')
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127 call listener_flush()
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128 call assert_equal(bufnr(''), s:buf)
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129 call assert_equal(1, s:start)
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130 call assert_equal(2, s:end)
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131 call assert_equal(0, s:added)
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132 call assert_equal([{'lnum': 1, 'end': 2, 'col': 1, 'added': 0}], s:list)
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133
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134 " two disconnected changes
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135 call setline(1, ['one', 'two', 'three', 'four'])
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136 call listener_flush()
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137 call setline(1, 'one one')
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138 call setline(3, 'three three')
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139 call listener_flush()
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140 call assert_equal(bufnr(''), s:buf)
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141 call assert_equal(1, s:start)
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142 call assert_equal(4, s:end)
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143 call assert_equal(0, s:added)
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144 call assert_equal([{'lnum': 1, 'end': 2, 'col': 1, 'added': 0},
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145 \ {'lnum': 3, 'end': 4, 'col': 1, 'added': 0}], s:list)
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146
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147 " add and remove lines
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148 call setline(1, ['one', 'two', 'three', 'four', 'five', 'six'])
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149 call listener_flush()
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150 call append(2, 'two two')
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151 4del
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152 call append(5, 'five five')
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153 call listener_flush()
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154 call assert_equal(bufnr(''), s:buf)
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155 call assert_equal(3, s:start)
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156 call assert_equal(6, s:end)
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157 call assert_equal(1, s:added)
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158 call assert_equal([{'lnum': 3, 'end': 3, 'col': 1, 'added': 1},
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159 \ {'lnum': 4, 'end': 5, 'col': 1, 'added': -1},
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160 \ {'lnum': 6, 'end': 6, 'col': 1, 'added': 1}], s:list)
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161
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162 call listener_remove(id)
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163 bwipe!
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164 endfunc
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165
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166 func s:StoreBufList(buf, start, end, added, list)
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167 let s:bufnr = a:buf
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168 let s:list = a:list
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169 endfunc
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170
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171 func Test_listening_other_buf()
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172 new
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173 call setline(1, ['one', 'two'])
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174 let bufnr = bufnr('')
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175 normal ww
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176 let id = listener_add(function('s:StoreBufList'), bufnr)
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177 let s:list = []
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178 call setbufline(bufnr, 1, 'hello')
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179 redraw
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180 call assert_equal(bufnr, s:bufnr)
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181 call assert_equal([{'lnum': 1, 'end': 2, 'col': 1, 'added': 0}], s:list)
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182
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183 call listener_remove(id)
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184 exe "buf " .. bufnr
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185 bwipe!
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186 endfunc