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annotate runtime/doc/channel.txt @ 15349:6abee072b93c v8.1.0682

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patch 8.1.0682: text properties not adjusted when backspacing replaced text commit https://github.com/vim/vim/commit/196d157f12cf0476d97f78834155fc67d6b161de Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 2 23:47:18 2019 +0100 patch 8.1.0682: text properties not adjusted when backspacing replaced text Problem: Text properties are not adjusted when backspacing replaced text. Solution: Keep text properties on text restored in replace mode.
author Bram Moolenaar <Bram@vim.org>
date Thu, 03 Jan 2019 00:00:54 +0100
parents 71c17b688bc6
children bd7461db24b3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 *channel.txt* For Vim version 8.1. Last change: 2018 Apr 18
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4 VIM REFERENCE MANUAL by Bram Moolenaar
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7 Inter-process communication *channel*
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9 Vim uses channels to communicate with other processes.
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10 A channel uses a socket or pipes. *socket-interface*
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11 Jobs can be used to start processes and communicate with them.
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12 The Netbeans interface also uses a channel. |netbeans|
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13
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14 1. Overview |job-channel-overview|
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15 2. Channel demo |channel-demo|
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16 3. Opening a channel |channel-open|
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17 4. Using a JSON or JS channel |channel-use|
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18 5. Channel commands |channel-commands|
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19 6. Using a RAW or NL channel |channel-raw|
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20 7. More channel functions |channel-more|
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21 8. Starting a job with a channel |job-start|
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22 9. Starting a job without a channel |job-start-nochannel|
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23 10. Job options |job-options|
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24 11. Controlling a job |job-control|
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25 12. Using a prompt buffer |prompt-buffer|
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27 {Vi does not have any of these features}
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28 {only when compiled with the |+channel| feature for channel stuff}
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29 You can check this with: `has('channel')`
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30 {only when compiled with the |+job| feature for job stuff}
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31 You can check this with: `has('job')`
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33 ==============================================================================
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34 1. Overview *job-channel-overview*
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36 There are four main types of jobs:
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37 1. A daemon, serving several Vim instances.
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38 Vim connects to it with a socket.
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39 2. One job working with one Vim instance, asynchronously.
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40 Uses a socket or pipes.
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41 3. A job performing some work for a short time, asynchronously.
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42 Uses a socket or pipes.
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43 4. Running a filter, synchronously.
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44 Uses pipes.
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45
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46 For when using sockets See |job-start|, |job-start-nochannel| and
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47 |channel-open|. For 2 and 3, one or more jobs using pipes, see |job-start|.
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48 For 4 use the ":{range}!cmd" command, see |filter|.
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50 Over the socket and pipes these protocols are available:
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51 RAW nothing known, Vim cannot tell where a message ends
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52 NL every message ends in a NL (newline) character
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53 JSON JSON encoding |json_encode()|
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54 JS JavaScript style JSON-like encoding |js_encode()|
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56 Common combination are:
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57 - Using a job connected through pipes in NL mode. E.g., to run a style
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58 checker and receive errors and warnings.
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59 - Using a daemon, connecting over a socket in JSON mode. E.g. to lookup
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60 cross-references in a database.
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62 ==============================================================================
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63 2. Channel demo *channel-demo* *demoserver.py*
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65 This requires Python. The demo program can be found in
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66 $VIMRUNTIME/tools/demoserver.py
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67 Run it in one terminal. We will call this T1.
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69 Run Vim in another terminal. Connect to the demo server with: >
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70 let channel = ch_open('localhost:8765')
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72 In T1 you should see:
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73 === socket opened === ~
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75 You can now send a message to the server: >
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76 echo ch_evalexpr(channel, 'hello!')
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78 The message is received in T1 and a response is sent back to Vim.
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79 You can see the raw messages in T1. What Vim sends is:
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80 [1,"hello!"] ~
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81 And the response is:
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82 [1,"got it"] ~
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83 The number will increase every time you send a message.
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85 The server can send a command to Vim. Type this on T1 (literally, including
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86 the quotes):
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87 ["ex","echo 'hi there'"] ~
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88 And you should see the message in Vim. You can move the cursor a word forward:
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89 ["normal","w"] ~
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91 To handle asynchronous communication a callback needs to be used: >
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92 func MyHandler(channel, msg)
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93 echo "from the handler: " . a:msg
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94 endfunc
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95 call ch_sendexpr(channel, 'hello!', {'callback': "MyHandler"})
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96 Vim will not wait for a response. Now the server can send the response later
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97 and MyHandler will be invoked.
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98
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99 Instead of giving a callback with every send call, it can also be specified
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100 when opening the channel: >
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101 call ch_close(channel)
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102 let channel = ch_open('localhost:8765', {'callback': "MyHandler"})
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103 call ch_sendexpr(channel, 'hello!')
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104
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105 When trying out channels it's useful to see what is going on. You can tell
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106 Vim to write lines in log file: >
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107 call ch_logfile('channellog', 'w')
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108 See |ch_logfile()|.
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109
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110 ==============================================================================
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111 3. Opening a channel *channel-open*
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112
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113 To open a channel: >
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114 let channel = ch_open({address} [, {options}])
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115 if ch_status(channel) == "open"
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116 " use the channel
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117
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118 Use |ch_status()| to see if the channel could be opened.
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119
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120 {address} has the form "hostname:port". E.g., "localhost:8765".
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121
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122 {options} is a dictionary with optional entries: *channel-open-options*
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123
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124 "mode" can be: *channel-mode*
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125 "json" - Use JSON, see below; most convenient way. Default.
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126 "js" - Use JS (JavaScript) encoding, more efficient than JSON.
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127 "nl" - Use messages that end in a NL character
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128 "raw" - Use raw messages
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129 *channel-callback* *E921*
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130 "callback" A function that is called when a message is received that is
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131 not handled otherwise. It gets two arguments: the channel
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132 and the received message. Example: >
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133 func Handle(channel, msg)
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134 echo 'Received: ' . a:msg
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135 endfunc
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136 let channel = ch_open("localhost:8765", {"callback": "Handle"})
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137 <
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138 When "mode" is "json" or "js" the "msg" argument is the body
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139 of the received message, converted to Vim types.
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140 When "mode" is "nl" the "msg" argument is one message,
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141 excluding the NL.
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142 When "mode" is "raw" the "msg" argument is the whole message
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143 as a string.
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144
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145 For all callbacks: Use |function()| to bind it to arguments
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146 and/or a Dictionary. Or use the form "dict.function" to bind
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147 the Dictionary.
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148
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149 Callbacks are only called at a "safe" moment, usually when Vim
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150 is waiting for the user to type a character. Vim does not use
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151 multi-threading.
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152
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153 *close_cb*
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154 "close_cb" A function that is called when the channel gets closed, other
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155 than by calling ch_close(). It should be defined like this: >
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156 func MyCloseHandler(channel)
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157 < Vim will invoke callbacks that handle data before invoking
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158 close_cb, thus when this function is called no more data will
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159 be passed to the callbacks.
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160 *channel-drop*
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161 "drop" Specifies when to drop messages:
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162 "auto" When there is no callback to handle a message.
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163 The "close_cb" is also considered for this.
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164 "never" All messages will be kept.
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165
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166 *channel-noblock*
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167 "noblock" Same effect as |job-noblock|. Only matters for writing.
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168
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169 *waittime*
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170 "waittime" The time to wait for the connection to be made in
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171 milliseconds. A negative number waits forever.
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172
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173 The default is zero, don't wait, which is useful if a local
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174 server is supposed to be running already. On Unix Vim
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175 actually uses a 1 msec timeout, that is required on many
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176 systems. Use a larger value for a remote server, e.g. 10
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177 msec at least.
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178 *channel-timeout*
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179 "timeout" The time to wait for a request when blocking, E.g. when using
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180 ch_evalexpr(). In milliseconds. The default is 2000 (2
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181 seconds).
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182
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183 When "mode" is "json" or "js" the "callback" is optional. When omitted it is
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184 only possible to receive a message after sending one.
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185
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186 To change the channel options after opening it use |ch_setoptions()|. The
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187 arguments are similar to what is passed to |ch_open()|, but "waittime" cannot
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188 be given, since that only applies to opening the channel.
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189
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190 For example, the handler can be added or changed: >
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191 call ch_setoptions(channel, {'callback': callback})
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192 When "callback" is empty (zero or an empty string) the handler is removed.
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193
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194 After a callback has been invoked Vim will update the screen and put the
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195 cursor back where it belongs. Thus the callback should not need to do
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196 `:redraw`.
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197
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198 The timeout can be changed: >
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199 call ch_setoptions(channel, {'timeout': msec})
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200 <
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201 *channel-close* *E906*
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202 Once done with the channel, disconnect it like this: >
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203 call ch_close(channel)
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204 When a socket is used this will close the socket for both directions. When
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205 pipes are used (stdin/stdout/stderr) they are all closed. This might not be
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206 what you want! Stopping the job with job_stop() might be better.
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207 All readahead is discarded, callbacks will no longer be invoked.
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208
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209 Note that a channel is closed in three stages:
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210 - The I/O ends, log message: "Closing channel". There can still be queued
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211 messages to read or callbacks to invoke.
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212 - The readahead is cleared, log message: "Clearing channel". Some variables
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213 may still reference the channel.
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214 - The channel is freed, log message: "Freeing channel".
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215
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216 When the channel can't be opened you will get an error message. There is a
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217 difference between MS-Windows and Unix: On Unix when the port doesn't exist
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218 ch_open() fails quickly. On MS-Windows "waittime" applies.
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219 *E898* *E901* *E902*
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220
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221 If there is an error reading or writing a channel it will be closed.
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222 *E630* *E631*
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223
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224 ==============================================================================
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225 4. Using a JSON or JS channel *channel-use*
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226
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227 If mode is JSON then a message can be sent synchronously like this: >
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228 let response = ch_evalexpr(channel, {expr})
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229 This awaits a response from the other side.
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230
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231 When mode is JS this works the same, except that the messages use
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232 JavaScript encoding. See |js_encode()| for the difference.
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233
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234 To send a message, without handling a response or letting the channel callback
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235 handle the response: >
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236 call ch_sendexpr(channel, {expr})
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237
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238 To send a message and letting the response handled by a specific function,
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239 asynchronously: >
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240 call ch_sendexpr(channel, {expr}, {'callback': Handler})
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241
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242 Vim will match the response with the request using the message ID. Once the
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243 response is received the callback will be invoked. Further responses with the
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244 same ID will be ignored. If your server sends back multiple responses you
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245 need to send them with ID zero, they will be passed to the channel callback.
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246
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247 The {expr} is converted to JSON and wrapped in an array. An example of the
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248 message that the receiver will get when {expr} is the string "hello":
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249 [12,"hello"] ~
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250
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251 The format of the JSON sent is:
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252 [{number},{expr}]
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253
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254 In which {number} is different every time. It must be used in the response
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255 (if any):
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256
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257 [{number},{response}]
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258
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259 This way Vim knows which sent message matches with which received message and
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260 can call the right handler. Also when the messages arrive out of order.
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261
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262 A newline character is terminating the JSON text. This can be used to
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263 separate the read text. For example, in Python:
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264 splitidx = read_text.find('\n')
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265 message = read_text[:splitidx]
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266 rest = read_text[splitidx + 1:]
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267
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268 The sender must always send valid JSON to Vim. Vim can check for the end of
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269 the message by parsing the JSON. It will only accept the message if the end
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270 was received. A newline after the message is optional.
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271
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272 When the process wants to send a message to Vim without first receiving a
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273 message, it must use the number zero:
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274 [0,{response}]
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275
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276 Then channel handler will then get {response} converted to Vim types. If the
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277 channel does not have a handler the message is dropped.
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278
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279 It is also possible to use ch_sendraw() and ch_evalraw() on a JSON or JS
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280 channel. The caller is then completely responsible for correct encoding and
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281 decoding.
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282
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283 ==============================================================================
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284 5. Channel commands *channel-commands*
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285
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286 With a JSON channel the process can send commands to Vim that will be
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287 handled by Vim internally, it does not require a handler for the channel.
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288
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289 Possible commands are: *E903* *E904* *E905*
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290 ["redraw", {forced}]
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291 ["ex", {Ex command}]
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292 ["normal", {Normal mode command}]
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293 ["expr", {expression}, {number}]
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294 ["expr", {expression}]
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295 ["call", {func name}, {argument list}, {number}]
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296 ["call", {func name}, {argument list}]
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297
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298 With all of these: Be careful what these commands do! You can easily
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299 interfere with what the user is doing. To avoid trouble use |mode()| to check
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300 that the editor is in the expected state. E.g., to send keys that must be
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301 inserted as text, not executed as a command:
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302 ["ex","if mode() == 'i' | call feedkeys('ClassName') | endif"] ~
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303
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304 Errors in these commands are normally not reported to avoid them messing up
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305 the display. If you do want to see them, set the 'verbose' option to 3 or
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306 higher.
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307
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308
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309 Command "redraw" ~
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310
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311 The other commands do not update the screen, so that you can send a sequence
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312 of commands without the cursor moving around. You must end with the "redraw"
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313 command to show any changed text and show the cursor where it belongs.
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314
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315 The argument is normally an empty string:
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316 ["redraw", ""] ~
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317 To first clear the screen pass "force":
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318 ["redraw", "force"] ~
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319
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320
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321 Command "ex" ~
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322
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323 The "ex" command is executed as any Ex command. There is no response for
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324 completion or error. You could use functions in an |autoload| script:
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325 ["ex","call myscript#MyFunc(arg)"]
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326
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327 You can also use "call |feedkeys()|" to insert any key sequence.
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328
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329 When there is an error a message is written to the channel log, if it exists,
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330 and v:errmsg is set to the error.
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331
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332
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333 Command "normal" ~
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334
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335 The "normal" command is executed like with ":normal!", commands are not
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336 mapped. Example to open the folds under the cursor:
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337 ["normal" "zO"]
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338
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339
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340 Command "expr" with response ~
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341
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342 The "expr" command can be used to get the result of an expression. For
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343 example, to get the number of lines in the current buffer:
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344 ["expr","line('$')", -2] ~
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345
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346 It will send back the result of the expression:
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347 [-2, "last line"] ~
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348 The format is:
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349 [{number}, {result}]
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350
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351 Here {number} is the same as what was in the request. Use a negative number
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352 to avoid confusion with message that Vim sends. Use a different number on
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353 every request to be able to match the request with the response.
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354
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355 {result} is the result of the evaluation and is JSON encoded. If the
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356 evaluation fails or the result can't be encoded in JSON it is the string
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357 "ERROR".
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358
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359
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360 Command "expr" without a response ~
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361
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362 This command is similar to "expr" above, but does not send back any response.
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363 Example:
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364 ["expr","setline('$', ['one', 'two', 'three'])"] ~
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365 There is no third argument in the request.
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366
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367
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368 Command "call" ~
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370 This is similar to "expr", but instead of passing the whole expression as a
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371 string this passes the name of a function and a list of arguments. This
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372 avoids the conversion of the arguments to a string and escaping and
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373 concatenating them. Example:
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374 ["call", "line", ["$"], -2] ~
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375
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376 Leave out the fourth argument if no response is to be sent:
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377 ["call", "setline", ["$", ["one", "two", "three"]]] ~
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379 ==============================================================================
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380 6. Using a RAW or NL channel *channel-raw*
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381
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382 If mode is RAW or NL then a message can be sent like this: >
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383 let response = ch_evalraw(channel, {string})
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384
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385 The {string} is sent as-is. The response will be what can be read from the
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386 channel right away. Since Vim doesn't know how to recognize the end of the
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387 message you need to take care of it yourself. The timeout applies for reading
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388 the first byte, after that it will not wait for anything more.
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389
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390 If mode is "nl" you can send a message in a similar way. You are expected
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391 to put in the NL after each message. Thus you can also send several messages
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392 ending in a NL at once. The response will be the text up to and including the
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393 first NL. This can also be just the NL for an empty response.
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394 If no NL was read before the channel timeout an empty string is returned.
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395
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396 To send a message, without expecting a response: >
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397 call ch_sendraw(channel, {string})
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398 The process can send back a response, the channel handler will be called with
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399 it.
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400
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401 To send a message and letting the response handled by a specific function,
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402 asynchronously: >
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403 call ch_sendraw(channel, {string}, {'callback': 'MyHandler'})
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404
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405 This {string} can also be JSON, use |json_encode()| to create it and
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406 |json_decode()| to handle a received JSON message.
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407
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408 It is not possible to use |ch_evalexpr()| or |ch_sendexpr()| on a raw channel.
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409
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410 A String in Vim cannot contain NUL bytes. To send or receive NUL bytes read
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411 or write from a buffer. See |in_io-buffer| and |out_io-buffer|.
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412
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413 ==============================================================================
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414 7. More channel functions *channel-more*
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415
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416 To obtain the status of a channel: ch_status(channel). The possible results
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417 are:
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418 "fail" Failed to open the channel.
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419 "open" The channel can be used.
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420 "buffered" The channel was closed but there is data to read.
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421 "closed" The channel was closed.
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422
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423 To obtain the job associated with a channel: ch_getjob(channel)
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424
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425 To read one message from a channel: >
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426 let output = ch_read(channel)
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427 This uses the channel timeout. To read without a timeout, just get any
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428 message that is available: >
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429 let output = ch_read(channel, {'timeout': 0})
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430 When no message was available then the result is v:none for a JSON or JS mode
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431 channels, an empty string for a RAW or NL channel. You can use |ch_canread()|
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432 to check if there is something to read.
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433
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434 Note that when there is no callback, messages are dropped. To avoid that add
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435 a close callback to the channel.
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436
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437 To read all output from a RAW channel that is available: >
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438 let output = ch_readraw(channel)
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439 To read the error output: >
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440 let output = ch_readraw(channel, {"part": "err"})
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441
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442 ch_read() and ch_readraw() use the channel timeout. When there is nothing to
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443 read within that time an empty string is returned. To specify a different
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444 timeout in msec use the "timeout" option:
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445 {"timeout": 123} ~
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446 To read from the error output use the "part" option:
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447 {"part": "err"} ~
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448 To read a message with a specific ID, on a JS or JSON channel:
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449 {"id": 99} ~
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450 When no ID is specified or the ID is -1, the first message is returned. This
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451 overrules any callback waiting for this message.
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452
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453 For a RAW channel this returns whatever is available, since Vim does not know
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454 where a message ends.
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455 For a NL channel this returns one message.
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456 For a JS or JSON channel this returns one decoded message.
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457 This includes any sequence number.
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458
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459 ==============================================================================
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460 8. Starting a job with a channel *job-start* *job*
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461
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462 To start a job and open a channel for stdin/stdout/stderr: >
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463 let job = job_start(command, {options})
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464
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465 You can get the channel with: >
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466 let channel = job_getchannel(job)
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467
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468 The channel will use NL mode. If you want another mode it's best to specify
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469 this in {options}. When changing the mode later some text may have already
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470 been received and not parsed correctly.
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471
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472 If the command produces a line of output that you want to deal with, specify
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473 a handler for stdout: >
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474 let job = job_start(command, {"out_cb": "MyHandler"})
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475 The function will be called with the channel and a message. You would define
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476 it like this: >
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477 func MyHandler(channel, msg)
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478
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479 Without the handler you need to read the output with |ch_read()| or
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480 |ch_readraw()|. You can do this in the close callback, see |read-in-close-cb|.
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481
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482 Note that if the job exits before you read the output, the output may be lost.
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483 This depends on the system (on Unix this happens because closing the write end
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484 of a pipe causes the read end to get EOF). To avoid this make the job sleep
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485 for a short while before it exits.
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486
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487 The handler defined for "out_cb" will not receive stderr. If you want to
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488 handle that separately, add an "err_cb" handler: >
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489 let job = job_start(command, {"out_cb": "MyHandler",
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490 \ "err_cb": "ErrHandler"})
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491
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492 If you want to handle both stderr and stdout with one handler use the
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493 "callback" option: >
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494 let job = job_start(command, {"callback": "MyHandler"})
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495
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496 Depending on the system, starting a job can put Vim in the background, the
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497 started job gets the focus. To avoid that, use the `foreground()` function.
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498 This might not always work when called early, put in the callback handler or
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499 use a timer to call it after the job has started.
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500
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501 You can send a message to the command with ch_evalraw(). If the channel is in
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502 JSON or JS mode you can use ch_evalexpr().
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503
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504 There are several options you can use, see |job-options|.
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505 For example, to start a job and write its output in buffer "dummy": >
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506 let logjob = job_start("tail -f /tmp/log",
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507 \ {'out_io': 'buffer', 'out_name': 'dummy'})
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508 sbuf dummy
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509
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510
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511 Job input from a buffer ~
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512 *in_io-buffer*
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513 To run a job that reads from a buffer: >
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514 let job = job_start({command},
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515 \ {'in_io': 'buffer', 'in_name': 'mybuffer'})
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516 <
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517 *E915* *E918*
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518 The buffer is found by name, similar to |bufnr()|. The buffer must exist and
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519 be loaded when job_start() is called.
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520
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521 By default this reads the whole buffer. This can be changed with the "in_top"
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522 and "in_bot" options.
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523
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524 A special mode is when "in_top" is set to zero and "in_bot" is not set: Every
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525 time a line is added to the buffer, the last-but-one line will be sent to the
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526 job stdin. This allows for editing the last line and sending it when pressing
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527 Enter.
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528 *channel-close-in*
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529 When not using the special mode the pipe or socket will be closed after the
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530 last line has been written. This signals the reading end that the input
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531 finished. You can also use |ch_close_in()| to close it sooner.
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532
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533 NUL bytes in the text will be passed to the job (internally Vim stores these
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534 as NL bytes).
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535
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536
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537 Reading job output in the close callback ~
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538 *read-in-close-cb*
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539 If the job can take some time and you don't need intermediate results, you can
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540 add a close callback and read the output there: >
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541
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542 func! CloseHandler(channel)
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543 while ch_status(a:channel, {'part': 'out'}) == 'buffered'
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544 echomsg ch_read(a:channel)
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545 endwhile
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546 endfunc
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547 let job = job_start(command, {'close_cb': 'CloseHandler'})
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548
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549 You will want to do something more useful than "echomsg".
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550
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551 ==============================================================================
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552 9. Starting a job without a channel *job-start-nochannel*
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553
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554 To start another process without creating a channel: >
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555 let job = job_start(command,
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556 \ {"in_io": "null", "out_io": "null", "err_io": "null"})
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557
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558 This starts {command} in the background, Vim does not wait for it to finish.
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parents:
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559
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560 When Vim sees that neither stdin, stdout or stderr are connected, no channel
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561 will be created. Often you will want to include redirection in the command to
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562 avoid it getting stuck.
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parents:
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563
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564 There are several options you can use, see |job-options|.
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565
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566 *job-start-if-needed*
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567 To start a job only when connecting to an address does not work, do something
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568 like this: >
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569 let channel = ch_open(address, {"waittime": 0})
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570 if ch_status(channel) == "fail"
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571 let job = job_start(command)
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572 let channel = ch_open(address, {"waittime": 1000})
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573 endif
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574
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575 Note that the waittime for ch_open() gives the job one second to make the port
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576 available.
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577
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578 ==============================================================================
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579 10. Job options *job-options*
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580
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581 The {options} argument in job_start() is a dictionary. All entries are
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582 optional. Some options can be used after the job has started, using
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diff changeset
583 job_setoptions(job, {options}). Many options can be used with the channel
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diff changeset
584 related to the job, using ch_setoptions(channel, {options}).
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585 See |job_setoptions()| and |ch_setoptions()|.
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586
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587 *in_mode* *out_mode* *err_mode*
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588 "in_mode" mode specifically for stdin, only when using pipes
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diff changeset
589 "out_mode" mode specifically for stdout, only when using pipes
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diff changeset
590 "err_mode" mode specifically for stderr, only when using pipes
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diff changeset
591 See |channel-mode| for the values.
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diff changeset
592
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diff changeset
593 Note: when setting "mode" the part specific mode is
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parents: 8673
diff changeset
594 overwritten. Therefore set "mode" first and the part
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595 specific mode later.
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diff changeset
596
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diff changeset
597 Note: when writing to a file or buffer and when
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diff changeset
598 reading from a buffer NL mode is used by default.
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diff changeset
599
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600 *job-noblock*
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601 "noblock": 1 When writing use a non-blocking write call. This
71c17b688bc6 patch 8.1.0350: Vim may block on ch_sendraw()
Christian Brabandt <cb@256bit.org>
parents: 14421
diff changeset
602 avoids getting stuck if Vim should handle other
71c17b688bc6 patch 8.1.0350: Vim may block on ch_sendraw()
Christian Brabandt <cb@256bit.org>
parents: 14421
diff changeset
603 messages in between, e.g. when a job sends back data
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diff changeset
604 to Vim. It implies that when `ch_sendraw()` returns
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Christian Brabandt <cb@256bit.org>
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diff changeset
605 not all data may have been written yet.
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Christian Brabandt <cb@256bit.org>
parents: 14421
diff changeset
606 This option was added in patch 8.1.0350, test with: >
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parents: 14421
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607 if has("patch-8.1.350")
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608 let options['noblock'] = 1
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Christian Brabandt <cb@256bit.org>
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609 endif
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parents: 14421
diff changeset
610 <
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611 *job-callback*
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612 "callback": handler Callback for something to read on any part of the
9ca3885edfed commit https://github.com/vim/vim/commit/decb14d68c3e3736566466aed2190f1d1cab587a
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parents: 8148
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613 channel.
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614 *job-out_cb* *out_cb*
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615 "out_cb": handler Callback for when there is something to read on
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diff changeset
616 stdout. Only for when the channel uses pipes. When
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diff changeset
617 "out_cb" wasn't set the channel callback is used.
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diff changeset
618 The two arguments are the channel and the message.
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619
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diff changeset
620 *job-err_cb* *err_cb*
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621 "err_cb": handler Callback for when there is something to read on
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diff changeset
622 stderr. Only for when the channel uses pipes. When
b1a19a2f73f0 commit https://github.com/vim/vim/commit/4f3f668c8486444e53163c29d2fc79bf47eb3c82
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diff changeset
623 "err_cb" wasn't set the channel callback is used.
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624 The two arguments are the channel and the message.
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625 *job-close_cb*
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626 "close_cb": handler Callback for when the channel is closed. Same as
9227
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627 "close_cb" on |ch_open()|, see |close_cb|.
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628 *job-drop*
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629 "drop": when Specifies when to drop messages. Same as "drop" on
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630 |ch_open()|, see |channel-drop|. For "auto" the
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631 exit_cb is not considered.
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632 *job-exit_cb*
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633 "exit_cb": handler Callback for when the job ends. The arguments are the
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634 job and the exit status.
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169a62d5bcb9 commit https://github.com/vim/vim/commit/b4ada79aa7d0d1e5da3a659b1a203d7cae9f7f59
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parents: 10244
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635 Vim checks up to 10 times per second for jobs that
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636 ended. The check can also be triggered by calling
169a62d5bcb9 commit https://github.com/vim/vim/commit/b4ada79aa7d0d1e5da3a659b1a203d7cae9f7f59
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parents: 10244
diff changeset
637 |job_status()|, which may then invoke the exit_cb
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parents: 10244
diff changeset
638 handler.
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parents: 9076
diff changeset
639 Note that data can be buffered, callbacks may still be
071f9da012fb commit https://github.com/vim/vim/commit/06d2d38ab7564e1f784b1058a4ef4580cd6d1810
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parents: 9076
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640 called after the process ends.
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Christian Brabandt <cb@256bit.org>
parents: 8673
diff changeset
641 *job-timeout*
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diff changeset
642 "timeout": time The time to wait for a request when blocking, E.g.
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643 when using ch_evalexpr(). In milliseconds. The
b1a19a2f73f0 commit https://github.com/vim/vim/commit/4f3f668c8486444e53163c29d2fc79bf47eb3c82
Christian Brabandt <cb@256bit.org>
parents: 8673
diff changeset
644 default is 2000 (2 seconds).
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645 *out_timeout* *err_timeout*
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646 "out_timeout": time Timeout for stdout. Only when using pipes.
21f3930dfe6e Documentation updates.
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diff changeset
647 "err_timeout": time Timeout for stderr. Only when using pipes.
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648 Note: when setting "timeout" the part specific mode is
b1a19a2f73f0 commit https://github.com/vim/vim/commit/4f3f668c8486444e53163c29d2fc79bf47eb3c82
Christian Brabandt <cb@256bit.org>
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diff changeset
649 overwritten. Therefore set "timeout" first and the
b1a19a2f73f0 commit https://github.com/vim/vim/commit/4f3f668c8486444e53163c29d2fc79bf47eb3c82
Christian Brabandt <cb@256bit.org>
parents: 8673
diff changeset
650 part specific mode later.
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diff changeset
651
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652 *job-stoponexit*
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653 "stoponexit": {signal} Send {signal} to the job when Vim exits. See
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654 |job_stop()| for possible values.
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Christian Brabandt <cb@256bit.org>
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655 "stoponexit": "" Do not stop the job when Vim exits.
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656 The default is "term".
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657
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658 *job-term*
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659 "term": "open" Start a terminal in a new window and connect the job
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660 stdin/stdout/stderr to it. Similar to using
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parents: 11659
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661 `:terminal`.
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662 NOTE: Not implemented yet!
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663
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664 "channel": {channel} Use an existing channel instead of creating a new one.
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665 The parts of the channel that get used for the new job
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666 will be disconnected from what they were used before.
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667 If the channel was still used by another job this may
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diff changeset
668 cause I/O errors.
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669 Existing callbacks and other settings remain.
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670
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671 "pty": 1 Use a pty (pseudo-tty) instead of a pipe when
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672 possible. This is most useful in combination with a
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Christian Brabandt <cb@256bit.org>
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673 terminal window, see |terminal|.
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parents: 11659
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674 {only on Unix and Unix-like systems}
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parents: 11659
diff changeset
675
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676 *job-in_io* *in_top* *in_bot* *in_name* *in_buf*
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677 "in_io": "null" disconnect stdin (read from /dev/null)
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678 "in_io": "pipe" stdin is connected to the channel (default)
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679 "in_io": "file" stdin reads from a file
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680 "in_io": "buffer" stdin reads from a buffer
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681 "in_top": number when using "buffer": first line to send (default: 1)
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682 "in_bot": number when using "buffer": last line to send (default: last)
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diff changeset
683 "in_name": "/path/file" the name of the file or buffer to read from
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
684 "in_buf": number the number of the buffer to read from
8061
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
685
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
686 *job-out_io* *out_name* *out_buf*
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
687 "out_io": "null" disconnect stdout (goes to /dev/null)
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
688 "out_io": "pipe" stdout is connected to the channel (default)
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
689 "out_io": "file" stdout writes to a file
10449
222b1432814e commit https://github.com/vim/vim/commit/5162822914372fc916a93f85848c0c82209e7cec
Christian Brabandt <cb@256bit.org>
parents: 10426
diff changeset
690 "out_io": "buffer" stdout appends to a buffer (see below)
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
691 "out_name": "/path/file" the name of the file or buffer to write to
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
692 "out_buf": number the number of the buffer to write to
9147
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
693 "out_modifiable": 0 when writing to a buffer, 'modifiable' will be off
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
694 (see below)
10147
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
695 "out_msg": 0 when writing to a new buffer, the first line will be
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
696 set to "Reading from channel output..."
8267
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
697
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
698 *job-err_io* *err_name* *err_buf*
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
699 "err_io": "out" stderr messages to go to stdout
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
700 "err_io": "null" disconnect stderr (goes to /dev/null)
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
701 "err_io": "pipe" stderr is connected to the channel (default)
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
702 "err_io": "file" stderr writes to a file
10449
222b1432814e commit https://github.com/vim/vim/commit/5162822914372fc916a93f85848c0c82209e7cec
Christian Brabandt <cb@256bit.org>
parents: 10426
diff changeset
703 "err_io": "buffer" stderr appends to a buffer (see below)
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
704 "err_name": "/path/file" the name of the file or buffer to write to
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
705 "err_buf": number the number of the buffer to write to
9147
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
706 "err_modifiable": 0 when writing to a buffer, 'modifiable' will be off
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
707 (see below)
10147
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
708 "err_msg": 0 when writing to a new buffer, the first line will be
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
709 set to "Reading from channel error..."
8497
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
710
8795
aba2d0a01290 commit https://github.com/vim/vim/commit/7db8f6f4f85e5d0526d23107b2a5e2334dc23354
Christian Brabandt <cb@256bit.org>
parents: 8748
diff changeset
711 "block_write": number only for testing: pretend every other write to stdin
aba2d0a01290 commit https://github.com/vim/vim/commit/7db8f6f4f85e5d0526d23107b2a5e2334dc23354
Christian Brabandt <cb@256bit.org>
parents: 8748
diff changeset
712 will block
aba2d0a01290 commit https://github.com/vim/vim/commit/7db8f6f4f85e5d0526d23107b2a5e2334dc23354
Christian Brabandt <cb@256bit.org>
parents: 8748
diff changeset
713
12043
2796a2c9fc17 patch 8.0.0902: cannot specify directory or environment for a job
Christian Brabandt <cb@256bit.org>
parents: 11763
diff changeset
714 "env": dict environment variables for the new process
2796a2c9fc17 patch 8.0.0902: cannot specify directory or environment for a job
Christian Brabandt <cb@256bit.org>
parents: 11763
diff changeset
715 "cwd": "/path/to/dir" current working directory for the new process;
2796a2c9fc17 patch 8.0.0902: cannot specify directory or environment for a job
Christian Brabandt <cb@256bit.org>
parents: 11763
diff changeset
716 if the directory does not exist an error is given
2796a2c9fc17 patch 8.0.0902: cannot specify directory or environment for a job
Christian Brabandt <cb@256bit.org>
parents: 11763
diff changeset
717
8497
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
718
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
719 Writing to a buffer ~
10004
8061455d9179 commit https://github.com/vim/vim/commit/818078ddfbb8cc2546f697c5675a251d095722ec
Christian Brabandt <cb@256bit.org>
parents: 9969
diff changeset
720 *out_io-buffer*
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
721 When the out_io or err_io mode is "buffer" and there is a callback, the text
8440
4c6ad81d41fe commit https://github.com/vim/vim/commit/5f148ec0b5a6cedd9129b3abac351034b83cc4f7
Christian Brabandt <cb@256bit.org>
parents: 8392
diff changeset
722 is appended to the buffer before invoking the callback.
4c6ad81d41fe commit https://github.com/vim/vim/commit/5f148ec0b5a6cedd9129b3abac351034b83cc4f7
Christian Brabandt <cb@256bit.org>
parents: 8392
diff changeset
723
4c6ad81d41fe commit https://github.com/vim/vim/commit/5f148ec0b5a6cedd9129b3abac351034b83cc4f7
Christian Brabandt <cb@256bit.org>
parents: 8392
diff changeset
724 When a buffer is used both for input and output, the output lines are put
4c6ad81d41fe commit https://github.com/vim/vim/commit/5f148ec0b5a6cedd9129b3abac351034b83cc4f7
Christian Brabandt <cb@256bit.org>
parents: 8392
diff changeset
725 above the last line, since the last line is what is written to the channel
8497
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
726 input. Otherwise lines are appended below the last line.
8291
ac0c43e7af20 commit https://github.com/vim/vim/commit/c7f0ebc6d1e1cdaed816b88a0d6092c5ace615eb
Christian Brabandt <cb@256bit.org>
parents: 8285
diff changeset
727
8392
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents: 8291
diff changeset
728 When using JS or JSON mode with "buffer", only messages with zero or negative
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents: 8291
diff changeset
729 ID will be added to the buffer, after decoding + encoding. Messages with a
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents: 8291
diff changeset
730 positive number will be handled by a callback, commands are handled as usual.
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents: 8291
diff changeset
731
9227
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
732 The name of the buffer from "out_name" or "err_name" is compared the full name
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
733 of existing buffers, also after expanding the name for the current directory.
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
734 E.g., when a buffer was created with ":edit somename" and the buffer name is
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
735 "somename" it will use that buffer.
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
736
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
737 If there is no matching buffer a new buffer is created. Use an empty name to
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
738 always create a new buffer. |ch_getbufnr()| can then be used to get the
ecb621205ed1 commit https://github.com/vim/vim/commit/82af8710bf8d1caeeceafb1370a052cb7d92f076
Christian Brabandt <cb@256bit.org>
parents: 9147
diff changeset
739 buffer number.
8291
ac0c43e7af20 commit https://github.com/vim/vim/commit/c7f0ebc6d1e1cdaed816b88a0d6092c5ace615eb
Christian Brabandt <cb@256bit.org>
parents: 8285
diff changeset
740
ac0c43e7af20 commit https://github.com/vim/vim/commit/c7f0ebc6d1e1cdaed816b88a0d6092c5ace615eb
Christian Brabandt <cb@256bit.org>
parents: 8285
diff changeset
741 For a new buffer 'buftype' is set to "nofile" and 'bufhidden' to "hide". If
ac0c43e7af20 commit https://github.com/vim/vim/commit/c7f0ebc6d1e1cdaed816b88a0d6092c5ace615eb
Christian Brabandt <cb@256bit.org>
parents: 8285
diff changeset
742 you prefer other settings, create the buffer first and pass the buffer number.
10147
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
743 *out_modifiable* *err_modifiable*
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
744 The "out_modifiable" and "err_modifiable" options can be used to set the
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
745 'modifiable' option off, or write to a buffer that has 'modifiable' off. That
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
746 means that lines will be appended to the buffer, but the user can't easily
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
747 change the buffer.
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
748 *out_msg* *err_msg*
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
749 The "out_msg" option can be used to specify whether a new buffer will have the
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
750 first line set to "Reading from channel output...". The default is to add the
65afd399ffa7 commit https://github.com/vim/vim/commit/169ebb080454357279ad5ad21ac532deaec605e8
Christian Brabandt <cb@256bit.org>
parents: 10054
diff changeset
751 message. "err_msg" does the same for channel error.
8267
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
752
9147
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
753 When an existing buffer is to be written where 'modifiable' is off and the
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
754 "out_modifiable" or "err_modifiable" options is not zero, an error is given
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
755 and the buffer will not be written to.
053bc64433ec commit https://github.com/vim/vim/commit/9f5842e63fc63d438cbffcec503e072a06f74dc2
Christian Brabandt <cb@256bit.org>
parents: 9116
diff changeset
756
8267
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
757 When the buffer written to is displayed in a window and the cursor is in the
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
758 first column of the last line, the cursor will be moved to the newly added
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
759 line and the window is scrolled up to show the cursor if needed.
108d30ed34ba commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd
Christian Brabandt <cb@256bit.org>
parents: 8246
diff changeset
760
9464
be72f4201a1d commit https://github.com/vim/vim/commit/063b9d15abea041a5bfff3ffc4e219e26fd1d4fa
Christian Brabandt <cb@256bit.org>
parents: 9227
diff changeset
761 Undo is synced for every added line. NUL bytes are accepted (internally Vim
be72f4201a1d commit https://github.com/vim/vim/commit/063b9d15abea041a5bfff3ffc4e219e26fd1d4fa
Christian Brabandt <cb@256bit.org>
parents: 9227
diff changeset
762 stores these as NL bytes).
8061
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
763
8497
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
764
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
765 Writing to a file ~
8540
fec8655cf1bf commit https://github.com/vim/vim/commit/d6c2f0526064eef6f8917d2bad00df707d79ea16
Christian Brabandt <cb@256bit.org>
parents: 8497
diff changeset
766 *E920*
8497
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
767 The file is created with permissions 600 (read-write for the user, not
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
768 accessible for others). Use |setfperm()| to change this.
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
769
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
770 If the file already exists it is truncated.
da01d5da2cfa commit https://github.com/vim/vim/commit/77cdfd10382e01cc51f4ba1a9177032351843151
Christian Brabandt <cb@256bit.org>
parents: 8440
diff changeset
771
8061
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
772 ==============================================================================
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
773 11. Controlling a job *job-control*
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
774
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
775 To get the status of a job: >
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
776 echo job_status(job)
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
777
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
778 To make a job stop running: >
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
Christian Brabandt <cb@256bit.org>
parents: 7992
diff changeset
779 job_stop(job)
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780
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781 This is the normal way to end a job. On Unix it sends a SIGTERM to the job.
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782 It is possible to use other ways to stop the job, or even send arbitrary
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783 signals. E.g. to force a job to stop, "kill it": >
abd64cf67bcf commit https://github.com/vim/vim/commit/38a55639d603823efcf2d2fdf542dbffdeb60b75
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784 job_stop(job, "kill")
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785
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786 For more options see |job_stop()|.
7788
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787
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788 ==============================================================================
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789 12. Using a prompt buffer *prompt-buffer*
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790
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791 If you want to type input for the job in a Vim window you have a few options:
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792 - Use a normal buffer and handle all possible commands yourself.
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793 This will be complicated, since there are so many possible commands.
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794 - Use a terminal window. This works well if what you type goes directly to
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795 the job and the job output is directly displayed in the window.
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796 See |terminal-window|.
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797 - Use a prompt window. This works well when entering a line for the job in Vim
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798 while displaying (possibly filtered) output from the job.
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799
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800 A prompt buffer is created by setting 'buftype' to "prompt". You would
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801 normally only do that in a newly created buffer.
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802
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803 The user can edit and enter one line of text at the very last line of the
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804 buffer. When pressing Enter in the prompt line the callback set with
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805 |prompt_setcallback()| is invoked. It would normally send the line to a job.
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806 Another callback would receive the output from the job and display it in the
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807 buffer, below the prompt (and above the next prompt).
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808
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809 Only the text in the last line, after the prompt, is editable. The rest of the
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810 buffer is not modifiable with Normal mode commands. It can be modified by
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811 calling functions, such as |append()|. Using other commands may mess up the
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812 buffer.
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813
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814 After setting 'buftype' to "prompt" Vim does not automatically start Insert
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815 mode, use `:startinsert` if you want to enter Insert mode, so that the user
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816 can start typing a line.
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817
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818 The text of the prompt can be set with the |prompt_setprompt()| function.
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819
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820 The user can go to Normal mode and navigate through the buffer. This can be
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821 useful see older output or copy text.
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822
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823 The CTRL-W key can be used to start a window command, such as CTRL-W w to
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824 switch to the next window. This also works in Insert mode (use Shift-CTRL-W
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825 to delete a word). When leaving the window Insert mode will be stopped. When
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826 coming back to the prompt window Insert mode will be restored.
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827
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828 Any command that starts Insert mode, such as "a", "i", "A" and "I", will move
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829 the cursor to the last line. "A" will move to the end of the line, "I" to the
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830 start of the line.
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831
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832
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833 vim:tw=78:ts=8:noet:ft=help:norl: