annotate runtime/doc/terminal.txt @ 12380:811338160414

Added tag v8.0.1069 for changeset 25f854eefe98df7140c6df90f6abb60dca6b7685
author Christian Brabandt <cb@256bit.org>
date Thu, 07 Sep 2017 20:30:04 +0200
parents 66fa8eabbd6e
children 5d4d744151c2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 *terminal.txt* For Vim version 8.0. Last change: 2017 Aug 29
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3
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4 VIM REFERENCE MANUAL by Bram Moolenaar
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5
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6
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7 Terminal window support *terminal*
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8
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9
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10 WARNING: THIS IS ONLY PARTLY IMPLEMENTED, ANYTHING CAN STILL CHANGE
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11
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12 The terminal feature is optional, use this to check if your Vim has it: >
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13 echo has('terminal')
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14 If the result is "1" you have it.
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15
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16
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17 1. Basic use |terminal-use|
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18 2. Remote testing |terminal-testing|
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19 3. Debugging |terminal-debug|
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20
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21 {Vi does not have any of these commands}
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22 {only available when compiled with the |+terminal| feature}
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23
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24 The terminal feature requires the |+multi_byte|, |+job| and |+channel| features.
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25
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26 ==============================================================================
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27 1. Basic use *terminal-use*
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28
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29 This feature is for running a terminal emulator in a Vim window. A job can be
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30 started connected to the terminal emulator. For example, to run a shell: >
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31 :term bash
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32
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33 Or to run a debugger: >
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34 :term gdb vim
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35
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36 The job runs asynchronously from Vim, the window will be updated to show
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37 output from the job, also while editing in any other window.
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38
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39
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40 Typing ~
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41
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42 When the keyboard focus is in the terminal window, typed keys will be sent to
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43 the job. This uses a pty when possible. You can click outside of the
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44 terminal window to move keyboard focus elsewhere.
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45
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46 CTRL-W can be used to navigate between windows and other CTRL-W commands, e.g.:
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47 CTRL-W CTRL-W move focus to the next window
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48 CTRL-W : enter an Ex command
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49 See |CTRL-W| for more commands.
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50
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51 Special in the terminal window: *CTRL-W_.* *CTRL-W_N*
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52 CTRL-W . send a CTRL-W to the job in the terminal
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53 CTRL-W N go to Terminal-Normal mode, see |Terminal-mode|
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54 CTRL-\ CTRL-N go to Terminal-Normal mode, see |Terminal-mode|
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55 CTRL-W " {reg} paste register {reg} *CTRL-W_quote*
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56 Also works with the = register to insert the result of
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57 evaluating an expression.
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58 CTRL-W CTRL-C ends the job, see below |t_CTRL-W_CTRL-C|
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59
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60 See option 'termkey' for specifying another key instead of CTRL-W that
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61 will work like CTRL-W. However, typing 'termkey' twice sends 'termkey' to
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62 the job. For example:
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63 'termkey' CTRL-W move focus to the next window
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64 'termkey' : enter an Ex command
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65 'termkey' 'termkey' send 'termkey' to the job in the terminal
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66 'termkey' . send a CTRL-W to the job in the terminal
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67 'termkey' N go to terminal Normal mode, see below
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68 'termkey' CTRL-N same as CTRL-W N
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69 'termkey' CTRL-C same as |t_CTRL-W_CTRL-C|
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70 *t_CTRL-\_CTRL-N*
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71 The special key combination CTRL-\ CTRL-N can be used to switch to Normal
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72 mode, just like this works in any other mode.
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73 *t_CTRL-W_CTRL-C*
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74 CTRL-W CTRL-C can be typed to forcefully end the job. On MS-Windows a
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75 CTRL-BREAK will also kill the job.
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76
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77 If you type CTRL-C the effect depends on what the pty has been configured to
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78 do. For simple commands this causes a SIGINT to be sent to the job, which
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79 would end it. Other commands may ignore the SIGINT or handle the CTRL-C
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80 themselves (like Vim does).
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81
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82
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83 Size and color ~
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84
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85 See option 'termsize' for controlling the size of the terminal window.
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86 (TODO: scrolling when the terminal is larger than the window)
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87
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88 The terminal uses the 'background' option to decide whether the terminal
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89 window will start with a white or black background. The job running in the
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90 terminal can change the colors.
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91
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92
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93 Syntax ~
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94
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95 :[range]ter[minal] [options] [command] *:ter* *:terminal*
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96 Open a new terminal window.
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97
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98 If [command] is provided run it as a job and connect
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99 the input and output to the terminal.
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100 If [command] is not given the 'shell' option is used.
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101 if [command] is NONE no job is started, the pty of the
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102 terminal can be used by a command like gdb.
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103
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104 A new buffer will be created, using [command] or
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105 'shell' as the name, prefixed with a "!". If a buffer
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106 by this name already exists a number is added in
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107 parentheses. E.g. if "gdb" exists the second terminal
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108 buffer will use "!gdb (1)".
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109
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110 If [range] is given the specified lines are used as
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111 input for the job. It will not be possible to type
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112 keys in the terminal window.
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113
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114 Two comma separated numbers are used as "rows,cols".
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115 E.g. `:24,80gdb` opens a terminal with 24 rows and 80
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116 columns. However, if the terminal window spans the
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117 Vim window with, there is no vertical split, the Vim
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118 window width is used.
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119 *term++close* *term++open*
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120 Supported [options] are:
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121 ++close The terminal window will close
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122 automatically when the job terminates.
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123 ++open When the job terminates and no window
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124 shows it, a window will be opened.
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125 Note that this can be interruptive.
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126 ++curwin Open the terminal in the current
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127 window, do not split the current
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128 window. Fails if the current buffer
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129 cannot be |abandon|ed.
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130 ++hidden Open the terminal in a hidden buffer,
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131 no window will be used.
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132 ++rows={height} Use {height} for the terminal window
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133 height.
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134 ++cols={width} Use {width} for the terminal window
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135 width.
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136 ++eof={text} when using [range], text to send after
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137 the last line was written. The default
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138 is to send CTRL-D. A CR is appended.
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139 E.g. for a shell use "++eof=exit" and
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140 for Python "++eof=exit()". Special
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141 codes can be used like with `:map`,
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142 e.g. "<C-Z>" for CTRL-Z.
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143 {only on MS-Windows}
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144
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145 If you want to use more options use the |term_start()|
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146 function.
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147
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148 When the buffer associated with the terminal is unloaded or wiped out the job
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149 is killed, similar to calling `job_stop(job, "kill")`
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150
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151 So long as the job is running the window behaves like it contains a modified
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152 buffer. Trying to close the window with `CTRL-W :quit` fails. When using
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153 `CTRL-W :quit!` the job is ended. The text in the window is lost. The buffer
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154 still exists, but getting it in a window with `:buffer` will show an empty
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155 buffer.
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156
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157 Trying to close the window with `CTRL-W :close` also fails. Using
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158 `CTRL-W :close!` will close the window and make the buffer hidden.
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159
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160 You can use `CTRL-W :hide` to close the terminal window and make the buffer
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161 hidden, the job keeps running. The `:buffer` command can be used to turn the
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162 current window into a terminal window. If there are unsaved changes this
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163 fails, use ! to force, as usual.
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164
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165 To have a background job run without a window, and open the window when it's
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166 done, use options like this: >
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167 :term ++hidden ++open make
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168 Note that the window will open at an unexpected moment, this will interrupt
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169 what you are doing.
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170
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171 *E947* *E948*
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172 So long as the job is running, the buffer is considered modified and Vim
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173 cannot be quit easily, see |abandon|.
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174
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175 When the job has finished and no changes were made to the buffer: closing the
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176 window will wipe out the buffer.
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177
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178 Before changes can be made to a terminal buffer, the 'modifiable' option must
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179 be set. This is only possible when the job has finished. At the first change
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180 the buffer will become a normal buffer and the highlighting is removed.
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181 You may want to change the buffer name with |:file| to be able to write, since
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182 the buffer name will still be set to the command.
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183
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184
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185 Resizing ~
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186
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187 The size of the terminal can be in one of three modes:
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188
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189 1. The 'termsize' option is empty: The terminal size follows the window size.
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190 The minimal size is 2 screen lines with 10 cells.
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191
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192 2. The 'termsize' option is "rows*cols", where "rows" is the minimal number of
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193 screen rows and "cols" is the minimal number of cells.
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194
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195 3. The 'termsize' option is "rowsXcols" (where the x is upper or lower case).
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196 The terminal size is fixed to the specified number of screen lines and
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197 cells. If the window is bigger there will be unused empty space.
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198
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199 If the window is smaller than the terminal size, only part of the terminal can
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200 be seen (the lower-left part).
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201
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202 The |term_getsize()| function can be used to get the current size of the
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203 terminal. |term_setsize()| can be used only when in the first or second mode,
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204 not when 'termsize' is "rowsXcols".
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205
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206
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207 Terminal-Job and Terminal-Normal mode ~
11866
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208 *Terminal-mode*
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209 When the job is running the contents of the terminal is under control of the
12031
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210 job. That includes the cursor position. Typed keys are sent to the job.
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211 The terminal contents can change at any time. This is called Terminal-Job
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212 mode.
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213
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214 Use CTRL-W N (or 'termkey' N) to switch to Terminal-Normal mode. Now the
9897241c08b5 patch 8.0.0896: cannot close a terminal window when the job ends
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215 contents of the terminal window is under control of Vim, the job output is
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216 suspended. CTRL-\ CTRL-N does the same.
11866
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217 *E946*
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218 In Terminal-Normal mode you can move the cursor around with the usual Vim
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219 commands, Visually mark text, yank text, etc. But you cannot change the
9897241c08b5 patch 8.0.0896: cannot close a terminal window when the job ends
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220 contents of the buffer. The commands that would start insert mode, such as
9897241c08b5 patch 8.0.0896: cannot close a terminal window when the job ends
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221 'i' and 'a', return to Terminal-Job mode. The window will be updated to show
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222 the contents of the terminal.
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223
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224 In Terminal-Normal mode the statusline and window title show "(Terminal)". If
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225 the job ends while in Terminal-Normal mode this changes to
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226 "(Terminal-finished)".
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227
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228 It is not possible to enter Insert mode from Terminal-Job mode.
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229
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230
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231 Cursor style ~
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232
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233 By default the cursor in the terminal window uses a not blinking block. The
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234 normal xterm escape sequences can be used to change the blinking state and the
8d76a56861ec Update runtime files
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235 shape. Once focus leaves the terminal window Vim will restore the original
8d76a56861ec Update runtime files
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236 cursor.
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237
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238 An exception is when xterm is started with the "-bc" argument, or another way
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diff changeset
239 that causes the cursor to blink. This actually means that the blinking flag
8d76a56861ec Update runtime files
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240 is inverted. Since Vim cannot detect this, the terminal window cursor
8d76a56861ec Update runtime files
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241 blinking will also be inverted.
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242
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243
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244 Unix ~
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245
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246 On Unix a pty is used to make it possible to run all kinds of commands. You
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247 can even run Vim in the terminal! That's used for debugging, see below.
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248
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249 Environment variables are used to pass information to the running job:
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250 TERM name of the terminal, 'term'
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251 ROWS number of rows in the terminal initially
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252 LINES same as ROWS
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253 COLUMNS number of columns in the terminal initially
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254 COLORS number of colors, 't_Co' (256*256*256 in the GUI)
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255 VIM_SERVERNAME v:servername
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256
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257 The |client-server| feature can be used to communicate with the Vim instance
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258 where the job was started. This only works when v:servername is not empty.
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diff changeset
259 If needed you can set it with: >
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diff changeset
260 call remote_startserver('vim-server')
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261
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262 In the job you can then do something like: >
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263 vim --servername $VIM_SERVERNAME --remote +123 some_file.c
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diff changeset
264 This will open the file "some_file.c" and put the cursor on line 123.
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265
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266
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267 MS-Windows ~
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268
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269 On MS-Windows winpty is used to make it possible to run all kind of commands.
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270 Obviously, they must be commands that run in a terminal, not open their own
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271 window.
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272
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273 You need the following two files from winpty:
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274
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275 winpty.dll
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276 winpty-agent.exe
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277
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278 You can download them from the following page:
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279
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280 https://github.com/rprichard/winpty
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281
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282 Just put the files somewhere in your PATH. You can set the 'winptydll' option
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283 to point to the right file, if needed. If you have both the 32-bit and 64-bit
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284 version, rename to winpty32.dll and winpty64.dll to match the way Vim was
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285 build.
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286
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287 ==============================================================================
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288 2. Remote testing *terminal-testing*
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289
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290 Most Vim tests execute a script inside Vim. For some tests this does not
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291 work, running the test interferes with the code being tested. To avoid this
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292 Vim is executed in a terminal window. The test sends keystrokes to it and
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293 inspects the resulting screen state.
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294
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295 Functions ~
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296
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297 term_sendkeys() send keystrokes to a terminal
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298 term_wait() wait for screen to be updated
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299 term_scrape() inspect terminal screen
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300
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301
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302 ==============================================================================
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303 3. Debugging *terminal-debug*
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304
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305 The Terminal debugging plugin can be used to debug a program with gdb and view
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306 the source code in a Vim window.
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307
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308 Load the plugin with this command: >
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309 packadd termdebug
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310
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311 To start debugging use `:TermDebug` folowed by the command name, for example: >
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312 :TermDebug vim
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313
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314 This opens two windows:
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315 - A terminal window in which "gdb vim" is executed. Here you can directly
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316 interact with gdb.
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317 - A terminal window for the executed program. When "run" is used in gdb the
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318 program I/O will happen in this window, so that it does not interfere with
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319 controlling gdb.
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320 The current window is used to show the source code. When gdb jumps to a
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321 source file location this window will display the code, if possible. Values
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322 of variables can be inspected, breakpoints set and cleared, etc.
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323
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324 When the debugger ends the two opened windows are closed.
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325
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326
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327 Customizing ~
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328
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329 g:debugger The debugger command. Default "gdb".
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330
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331
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332 TODO
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333
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334
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335 vim:tw=78:ts=8:ft=help:norl: