The extra emacs functions we add are bound to two keys:
The tab key is bound to the
'ibp-tab function. It skips to the next field
and supplies default content.
This binding is accomplished by this code:
(global-set-key "\C-i" 'ibp-tab)
The key's name is described here as Control-I, which is another way of describing the
HT (horizontal tab) character.
'ibp-ditto function duplicates the
current field using the last previous line that contains
that field. The author's bindings have varied over time,
but the important thing is to have a binding that is easy to
reach (because this key is heavily used) and works the same
way on multiple platforms.
The current binding uses Control plus the
key that contains hyphen and underbar. As it happens,
emacs running in no-window mode (option
-nw) transmits this as Control-_, while in
a separate window it transmits as Control--. So we'll bind both those combinations like this:
(global-set-key [?\C-_] 'ibp-ditto) (global-set-key [?\C--] 'ibp-ditto)
The first argument to
global-set-key in these
cases uses emacs's vector notation.