evil + prettify

[aloispichler]

Suppose that prettify-symbol-alist contains (lambda . 955), e.g.. Deleting the character with point on λ results in ambda, only the first letter is removed, and breaking the character of prettify.
This behavior is unexpected.

Enhancement request:
Instead, the function should replace λ, i.e. lambda entirely.
Affected are evil-deleta-char, evil-backward-char and evil-substitute.

A workaround solution exists at emacs stackoverlow.