[IDEA] Allow the use of variables in the rules pragma

[Telumire]

For example:

\define rule-safe-css() only filteredtranscludeinline transcludeinline macrodef macrocallinline macrocallblock

then this could be used like this:

\rules <<rule-safe-css>>

The core could provide a few rules variable, which would be more readable / user friendly

[Jermolene]

Hi @Telumire sadly this wouldn't be possible. The problem is that the rules pragma needs to be fully interpreted at the time that the tiddler is parsed but at parse time we don't have access to variables.

I think the underlying issue might be addressed in a different way by #345.

[Telumire]

Yes this would work too ! I'll close this since it's kind of a duplicate of #345