Add existing input into editor

[h5vx]

Hi, nice plugin! I have idea to some enhancement.
I bound /esay to key, and when i input something and press that key, editor is empty. So i want to add existing input to editor.

Seems that all we have to do is to add

write(temp_file_fd, input_line_text, strlen(input_line_text))

after creating temp_file. But i don't sure where to get that input_line_text. Seems that struct hbb_line in mcabber/hbuf.h is what we need, but IDK where to get that struct.