#6882: bugs in conversion of variable names from Maxima to Sage
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Reporter: was | Owner: rws
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: calculus | Resolution:
Keywords: | Merged in:
Authors: Ralf Stephan | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/rws/bugs_in_conversion_of_variable_names_from_maxima_to_sage|
518de3e62533cd209997107f903192f1a31d118c
Dependencies: | Stopgaps:
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Comment (by kcrisman):
> I also found an error in the definition for maxima variable, because it
didn't allow variable names without '%' or the '%' not at the beginning.
Now the mentioned rules can be expressed as simple entries in symtable.
You'll note that `maxima_var` was never currently used in the codebase, so
it wasn't a problem, more of just old code -
[http://git.sagemath.org/sage.git/tree/src/sage/calculus/calculus.py#n1792
here] is where the `%` were all replaced. If you wanted I guess you could
just replace that with `_` and it would be much more efficient than doing
this whole loop every time, or so it seems to me. How does this do with
`timeit` for long expressions one gets in 'real life'? (See
sage/symbolic/random_tests.py.) Also note that usually we end up having
to special-case things with `%` anyway - e.g., `%ilt` (inverse Laplace
transform) gets handled somewhere else, I'd have to look up where.
--
Ticket URL: <http://trac.sagemath.org/ticket/6882#comment:34>
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