When two buffers are compared for differences, `M-x ediff-buffers` does not indicate the specific characters that have changed within a word (ie "character-level" diffs). Most modern diff tools will show the diffs within a word. 

Emacs seems to be missing this important (or obviously useful?) feature by default. How can I make Emacs display the diffs by character? 

**Update**
Here's `M-x ediff-buffers diff1 diff2`, using `emacs -Q` to ensure that my theme is not interferring:
![enter image description here](https://i.stack.imgur.com/AEsiy.png)

Here's the same text pasted into Meld:
![enter image description here](https://i.stack.imgur.com/xVykV.png)