user-var-changed#

The user-var-changed event is emitted when a user var escape sequence is used to set a user var.

You can use something like the following from your shell:

printf "\033]1337;SetUserVar=%s=%s\007" foo `echo -n bar | base64`

to set the user var named foo to the value bar.

On some systems the base64 command wraps the output by default after some amount of characters limiting the maximum length of the value. If this is the case an argument like -w 0 might help to avoid wrapping.

Then, if you have this in your config:

local wakterm = require 'wakterm'

wakterm.on('user-var-changed', function(window, pane, name, value)
  wakterm.log_info('var', name, value)
end)

return {}

your event handler will be called with name = 'foo' and value = 'bar'.

See also pane:get_user_vars().