Compiler updating user code

[Daniel Murphy]

"Michel Fortin"  wrote in message news:lfurh8$qae$1 at digitalmars.com... 

> But before you can consider building such a tool, you'll have to 
> convince Walter that the locations of tokens should be tracked more 
> precisely in the frontend. Currently the frontend remembers only the 
> file and line of any token it finds. You can't implement a refactoring 
> with that. Last time that came in in a discussion (about error messages 
> showing the exact location of the error), the idea was shut down on the 
> ground that storing better location info would slow down the compiler.

Yeah, we'll have to do this at some point.