Description of the Issue

a regular expression search for '\b' should find a word boundary, however it finds boundary between each individual characters.

Steps to Reproduce the Issue

1. Type few words like "Hello world!!!".
2. Click CTL-F for search.
3. On the Search Mode select regular expression
4. On the "find what :" field type \b and click "find next" button several times.

Expected Behavior

It should find the inter-character place before "H" of the "Hello world!!!", the place after the "o", the place before "w" and the place after "d".

Actual Behavior

It finds all inter-character places.

Debug Information