I don’t know if this is a feature or a bug or a configuration issue either with WordPress itself or how the web server is configured where this blog is hosted. I just posted something about compiler errors where the permalink had a single quotes in its title like : ‘qpainter-painter’-has-initialiser-but-incomplete-type. While this was handled fine by WordPress (I could successfully preview the post as well), once it was published I got the generic 500 Internal Server Error as shown below. So the question is what is wrong (if anything)? What is the expected behaviour? The only way for me to fix it was by removing the single quote in the permalinks as now you can see in the post.
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, [email-address-removed] and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.