Vim Tips: Channel

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Vim supported channels for inter-process communication and job channels communicate with other processes. Also, The vim packages contains the demo channel server(demoserver.py). You can find demoserver.py script in "$VIMRUNTIME/tools/". "$VIMRUNTIME" path, may change according to your distro:

My path, "/usr/share/vim/vim82/tools/demoserver.py" on Gentoo Linux.

  • First, run the demo server in a terminal.

$ python /usr/share/vim/vim82/tools/demoserver.py

  • And then, run Vim in another terminal.

  • For detailed information, I am quoting from the script:

    # Server that will accept connections from a Vim channel.
# Run this server and then in Vim you can open the channel:
#  :let handle = ch_open('localhost:8765')
#
# Then Vim can send requests to the server:
#  :let response = ch_sendexpr(handle, 'hello!')
#
# And you can control Vim by typing a JSON message here, e.g.:
#   ["ex","echo 'hi there'"]
#
# There is no prompt, just type a line and press Enter.
# To exit cleanly type "quit<Enter>".
#
# See ":help channel-demo" in Vim.
#
# This requires Python 2.6 or later.

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