Now when you delete a word in a promp it will work more like how it
works in bash. If the text dose not end in a letter then the last word
and all of the tailing special characters will be deleted. If the text
dose end in a letter then only the last word will be deleted leaving the
special characters that are before the last word.
Examples:
| Before | After |
| -------------------| ----------- |
| `some word` | `some ` |
| `some word` | `some ` |
| `some word ` | `some ` |
Now the prompt will act like the default bash readline with emacs key
bindings, clear and delete word.
You can now also move left and right in the prompt to insert chars in
the middle of the prompt rather than having to delete your search term
and start again.