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Maybe with all this talk of the new CTFE engine being developed, a similar mechanism can be used optionally? This could help with debugging also.
In debug mode, the cfte mixin's are written to disk with hash, if they are not a string themselves. (could be done with all cfte's, I suppose, but not sure about performance and consistency)
Then debuggers can use the outputed cfte's for proper analysis, line breaking, etc...