In help buffers, TAB in emacs state allows you to jump through the
links. This allows for the same behavior in motion state. This is very
useful for jumping to function definitions.
This change add a `switch-to-scratch-buffer` function allowing to – you
guessed it – switch to the `*scratch*` buffer, taking care of creating
it if necessary. The function is bind to `SPC b s`, `b` as it concerns
buffers, and `s` for `scratch`.
Emacs provides a `count-words-region' which is badly named as it counts
not only words, but also characters and lines. The current keybinding
for this function `SPC x w c' implies it's referring to words only. The
new mapping `SPC x c` is more coherent since it means counting text,
whether it is characters, words or lines. An alias `count-region` is
created to be less confusing in which-key description.
`SPC x w c` being free, `spacemacs/count-words-analysis` is remapped to
it instead of `SPC x w C` to save one keystroke.
