I use single quotes for items that, while technically a string, could be considered a value or symbol. For example: syslog('debug',"Just opened %s for ou

I use single quotes for items that, while technically a string, could be considered a value or symbol. For example: syslog('debug',"Just opened %s for output",filename) While there's no semantic difference between single and double quote, in my code base, there is. And if black becomes very popular, why even support single quotes anymore?