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annotate src/testdir/shared.vim @ 12763:7f27e9769f62 v8.0.1259

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patch 8.0.1259: search test can be flaky commit https://github.com/vim/vim/commit/13deab8d08145c1f6e2a3e82cb547bc7f87a3686 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 4 18:48:43 2017 +0100 patch 8.0.1259: search test can be flaky Problem: Search test can be flaky. Solution: Use WaitFor() instead of a delay. Make it possible to pass a funcref to WaitFor() to avoid the need for global variables. (James McCoy, closes #2282)
author Christian Brabandt <cb@256bit.org>
date Sat, 04 Nov 2017 19:00:05 +0100
parents af961e38e508
children 013c44d9dc09
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1 " Functions shared by several tests.
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2
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3 " Only load this script once.
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4 if exists('*WaitFor')
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5 finish
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6 endif
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7
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8 " Get the name of the Python executable.
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9 " Also keeps it in s:python.
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10 func PythonProg()
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11 " This test requires the Python command to run the test server.
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12 " This most likely only works on Unix and Windows.
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13 if has('unix')
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14 " We also need the job feature or the pkill command to make sure the server
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15 " can be stopped.
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16 if !(executable('python') && (has('job') || executable('pkill')))
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17 return ''
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18 endif
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19 let s:python = 'python'
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20 elseif has('win32')
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21 " Use Python Launcher for Windows (py.exe) if available.
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22 if executable('py.exe')
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23 let s:python = 'py.exe'
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24 elseif executable('python.exe')
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25 let s:python = 'python.exe'
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26 else
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27 return ''
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28 endif
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29 else
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30 return ''
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31 endif
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32 return s:python
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33 endfunc
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34
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35 " Run "cmd". Returns the job if using a job.
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36 func RunCommand(cmd)
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37 let job = 0
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38 if has('job')
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39 let job = job_start(a:cmd, {"stoponexit": "hup"})
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40 call job_setoptions(job, {"stoponexit": "kill"})
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41 elseif has('win32')
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42 exe 'silent !start cmd /c start "test_channel" ' . a:cmd
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43 else
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44 exe 'silent !' . a:cmd . '&'
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45 endif
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46 return job
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47 endfunc
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48
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49 " Read the port number from the Xportnr file.
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50 func GetPort()
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51 let l = []
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52 for i in range(200)
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53 try
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54 let l = readfile("Xportnr")
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55 catch
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56 endtry
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57 if len(l) >= 1
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58 break
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59 endif
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60 sleep 10m
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61 endfor
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62 call delete("Xportnr")
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63
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64 if len(l) == 0
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65 " Can't make the connection, give up.
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66 return 0
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67 endif
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68 return l[0]
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69 endfunc
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71 " Run a Python server for "cmd" and call "testfunc".
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72 " Always kills the server before returning.
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73 func RunServer(cmd, testfunc, args)
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74 " The Python program writes the port number in Xportnr.
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75 call delete("Xportnr")
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77 if len(a:args) == 1
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78 let arg = ' ' . a:args[0]
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79 else
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80 let arg = ''
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81 endif
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82 let pycmd = s:python . " " . a:cmd . arg
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83
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84 try
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85 let g:currentJob = RunCommand(pycmd)
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86
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87 " Wait for up to 2 seconds for the port number to be there.
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88 let port = GetPort()
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89 if port == 0
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90 call assert_false(1, "Can't start " . a:cmd)
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91 return
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92 endif
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93
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94 call call(function(a:testfunc), [port])
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95 catch
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96 call assert_false(1, 'Caught exception: "' . v:exception . '" in ' . v:throwpoint)
9517
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97 finally
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98 call s:kill_server(a:cmd)
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99 endtry
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100 endfunc
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102 func s:kill_server(cmd)
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103 if has('job')
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104 if exists('g:currentJob')
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105 call job_stop(g:currentJob)
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106 unlet g:currentJob
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107 endif
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108 elseif has('win32')
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109 let cmd = substitute(a:cmd, ".py", '', '')
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110 call system('taskkill /IM ' . s:python . ' /T /F /FI "WINDOWTITLE eq ' . cmd . '"')
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111 else
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112 call system("pkill -f " . a:cmd)
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113 endif
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114 endfunc
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115
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116 " Wait for up to a second for "expr" to become true. "expr" can be a
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117 " stringified expression to evaluate, or a funcref without arguments.
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118 "
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119 " Return time slept in milliseconds. With the +reltime feature this can be
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120 " more than the actual waiting time. Without +reltime it can also be less.
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121 func WaitFor(expr, ...)
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122 let timeout = get(a:000, 0, 1000)
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123 " using reltime() is more accurate, but not always available
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124 if has('reltime')
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125 let start = reltime()
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126 else
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127 let slept = 0
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128 endif
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129 if type(a:expr) == v:t_func
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130 let Test = a:expr
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131 else
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132 let Test = {-> eval(a:expr) }
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133 endif
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134 for i in range(timeout / 10)
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135 if Test()
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136 if has('reltime')
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137 return float2nr(reltimefloat(reltime(start)) * 1000)
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138 endif
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139 return slept
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140 endif
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141 if !has('reltime')
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142 let slept += 10
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143 endif
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144 sleep 10m
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145 endfor
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146 throw 'WaitFor() timed out after ' . timeout . ' msec'
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147 endfunc
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148
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149 " Wait for up to a given milliseconds.
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150 " With the +timers feature this waits for key-input by getchar(), Resume()
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151 " feeds key-input and resumes process. Return time waited in milliseconds.
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152 " Without +timers it uses simply :sleep.
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153 func Standby(msec)
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154 if has('timers')
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155 let start = reltime()
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156 let g:_standby_timer = timer_start(a:msec, function('s:feedkeys'))
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157 call getchar()
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158 return float2nr(reltimefloat(reltime(start)) * 1000)
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159 else
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160 execute 'sleep ' a:msec . 'm'
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161 return a:msec
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162 endif
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163 endfunc
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164
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165 func Resume()
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166 if exists('g:_standby_timer')
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167 call timer_stop(g:_standby_timer)
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168 call s:feedkeys(0)
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169 unlet g:_standby_timer
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170 endif
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171 endfunc
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172
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173 func s:feedkeys(timer)
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174 call feedkeys('x', 'nt')
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175 endfunc
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176
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177 " Get $VIMPROG to run Vim executable.
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178 " The Makefile writes it as the first line in the "vimcmd" file.
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179 func GetVimProg()
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180 if !filereadable('vimcmd')
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181 return ''
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182 endif
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183 return readfile('vimcmd')[0]
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184 endfunc
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185
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186 " Get the command to run Vim, with -u NONE and --not-a-term arguments.
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187 " If there is an argument use it instead of "NONE".
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188 " Returns an empty string on error.
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189 func GetVimCommand(...)
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190 if !filereadable('vimcmd')
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191 return ''
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192 endif
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193 if a:0 == 0
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194 let name = 'NONE'
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195 else
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196 let name = a:1
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197 endif
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198 " For Unix Makefile writes the command to use in the second line of the
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199 " "vimcmd" file, including environment options.
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200 " Other Makefiles just write the executable in the first line, so fall back
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201 " to that if there is no second line.
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202 let lines = readfile('vimcmd')
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203 let cmd = get(lines, 1, lines[0])
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204 let cmd = substitute(cmd, '-u \f\+', '-u ' . name, '')
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205 if cmd !~ '-u '. name
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206 let cmd = cmd . ' -u ' . name
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207 endif
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208 let cmd .= ' --not-a-term'
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209 let cmd = substitute(cmd, 'VIMRUNTIME=.*VIMRUNTIME;', '', '')
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210 return cmd
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211 endfunc
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212
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213 " Run Vim, using the "vimcmd" file and "-u NORC".
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214 " "before" is a list of Vim commands to be executed before loading plugins.
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215 " "after" is a list of Vim commands to be executed after loading plugins.
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216 " Plugins are not loaded, unless 'loadplugins' is set in "before".
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217 " Return 1 if Vim could be executed.
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218 func RunVim(before, after, arguments)
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219 return RunVimPiped(a:before, a:after, a:arguments, '')
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220 endfunc
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221
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222 func RunVimPiped(before, after, arguments, pipecmd)
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223 let cmd = GetVimCommand()
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224 if cmd == ''
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225 return 0
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226 endif
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227 let args = ''
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228 if len(a:before) > 0
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229 call writefile(a:before, 'Xbefore.vim')
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230 let args .= ' --cmd "so Xbefore.vim"'
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231 endif
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232 if len(a:after) > 0
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233 call writefile(a:after, 'Xafter.vim')
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234 let args .= ' -S Xafter.vim'
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235 endif
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236
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237 exe "silent !" . a:pipecmd . cmd . args . ' ' . a:arguments
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238
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239 if len(a:before) > 0
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240 call delete('Xbefore.vim')
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241 endif
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242 if len(a:after) > 0
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243 call delete('Xafter.vim')
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244 endif
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245 return 1
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246 endfunc
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247
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248 func CanRunGui()
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249 return has('gui') && ($DISPLAY != "" || has('gui_running'))
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250 endfunc