Ex command to put value of variable into terminal emulator?

Question

Using a terminal emulator (with :term), I would like to insert the value of a variable at the terminal cursor.

In a normal text buffer, I could use put =g:my_variable or exec ("normal! i" . g:my_variable). Neither of these seems to work with the terminal emulator, however. How can I send the contents of the variable g:my_variable to the job that is running in the terminal emulator?

Answer 1

In the :terminal, you can put any register using (<c-w> = ctrl w):

<c-w>"{register}

In particular, to insert the contents of a variable you can use the expression register:

<c-w>"= g:variable <cr>

If you are writing a script, in vim's terminal you may use the function term_sendkeys to send the contents of a variable to the terminal.

call term_sendkeys(bufnr('%'), g:contents)

If contents contains a "\n" newline character, the command will additionally be executed in the shell.