special_key(): Handle modifier + character special keys

Previously we were able to parse modifier + KeyCode (`<C-Enter>`) special
keys and plain KeyCode ones (`<Esc>`).

This change adds parsing support for the final type of special key,
modifier + character (e.g. `<C-l>`).

action_character():
Move the `map` outside of this function and into `action_map()` to allow
us to reuse the parsed `char` in `special_key()`.

key_modifier():
* Move the `many()` parser and `Option` handling outside of this
  function and into `special_key()`. Doing so enables us to say:

    <C-l>      // Character special keys _require_ a modifier (thus
               // `many1`)
    <[C-]Left> // KeyCode special keys may or may not have a modifier
               // (thus `many`)

* Rename from `key_modifiers()` to singular now that it only parses a
  single modifier.

special_key():
Parse both character and KeyCode special keys with modifiers.

action_parses_map_with_modifier():
Change input string to include a KeyCode-style special key with a
modifier since we didn't have one previously. This ensures we test both
kinds of special keys.

0 files changed, 0 insertions, 0 deletions