Unshift

Do you mean:

• The unshift command, /unshift variable-name text, which prepends text to a variable?
• The unshift function, $unshift(variable-name data), which performs the same mutation and returns the updated value?

Supply the variable's name, not its expanded contents. The old nonempty value follows the new data with a separating space. With xdebug dword enabled, data containing literal spaces is quoted as one prepended item. See the individual pages for scope, quoting, empty input, and errors. These are client-side variable operations and do not send IRC requests.

Related word-list operations are shift, which removes from the front, push, which adds at the back, and pop, which removes from the back.

Source references

• source/commands.c: command wrapper discards the function result.
• source/functions.c: function_unshift lookup, concatenation, writeback, and registration.