Robert Bradshaw wrote: > I already wrote such a thing, see http://hg.sagemath.org/sage-main/ > file/5be1d5ad8339/sage/misc/parser.pyx . To implement hold, one would > modify the preparser to do something like > > hold(...) -> SR("...", no_simplification=True) > > and of course make sure it propagates the no_simplification (or > whatever it's called) flag so that when it's printed it doesn't > simplify itself with maxima. This would of course only work for > symbolic expressions, not arbitrary chunks of Python code. (Arbitrary > chunks of Python code could be handled as well, using the ast and > compile modules, but that's a whole different type type of thing, and > one couldn't expect to pass them to maxima.)
Yep, this is exactly the sort of thing I was imagining. > Modifying the preparser is not something that should be IMHO taken > lightly. I agree that modifying the preparser should only be done after very carefully weighing the advantages and disadvantages! Jason --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
