Josh Eaton

On display, duplicate whitespace (including unicode whitespace characters) in between sentences or elsewhere within posts will be replaced with a single space. Useful if multiple contributors use different styles for sentence spacing or as a catch-all for any unintended extra whitespace.
This enables consistency in a blog with multiple contributors where one writer uses double spaces between sentences and another uses single spaces.
No modifications are made to the post content itself, the replacement happens when the content is displayed to the user.

Remove Double Space

Remove duplicate whitespace in between sentences or elsewhere within posts. Useful if multiple contributors use different styles for sentence spacing.

Damian Góra

Support typographic rules in Polish and Czech 
Moves conjunctions, prepositions, etc. to the new line. ( sierotki )
Support punctuation marks in French 
Adds a non-breaking space <code>&nbsp;</code> before punctuation marks as <code>!</code> <code>?</code> <code>;</code> <code>%</code> <code>«</code> <code>»</code>
How it works? 
The plugin automatically adds HTML entity <code>&nbsp;</code> ( non-breaking space ) after selected words or phrases. E.g. ‘Mr. Someone’ should be ‘Mr.<code>&nbsp;</code>Someone’. Works with:
<ul>
<li>posts</li>
<li>titles</li>
<li>pages</li>
<li>custom post types</li>
<li>comments</li>
<li>widgets</li>
<li>custom contents</li>
</ul>
You can create your own list of words/phrases or import our proposals.
Custom contents 
You can use the function <code><?php auto_nbsp($content, $echo); ?></code> to add <code>&nbsp;</code> to the custom content. Use this in your code. 
1. Param <code>$content</code> – (string) (required) Free text 
2. Param <code>$echo</code> – (bool) (optional) true (echo), false (return), Default: true
Other features: 
* Advanced Custom Fields compatibility
If you have any ideas for how Automatic NBSP could be improved, you write to us.

Automatic NBSP

Automatically adds a non-breaking space (&nbsp) in the content.

Remove Double Space vs Automatic NBSP