#9314: LaTeX representation of negative symbolic fractions still broken
-------------------------+--------------------------------------------------
Reporter: damm | Owner: burcin
Type: defect | Status: needs_review
Priority: blocker | Milestone: sage-4.5
Component: symbolics | Keywords: latex, sign, minus, pynac
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by burcin):
* status: new => needs_review
Comment:
The pynac package at
http://sage.math.washington.edu/home/burcin/pynac/pynac-0.2.0.p4.spkg
contains a fix for this. I want to keep this as easy to review as
possible, so the only change is the following simple patch:
{{{
diff --git a/ginac/mul.cpp b/ginac/mul.cpp
--- a/ginac/mul.cpp
+++ b/ginac/mul.cpp
@@ -268,6 +268,10 @@
}
} else {
if (numer.is_equal(_ex1) ||
numer.is_equal(_ex_1)) {
+ const numeric &coeff =
ex_to<numeric>(numer);
+ if (coeff.is_equal(*_num_1_p) &&
!coeff.is_parent_pos_char()) {
+ c.s<<"-";
+ }
mul(others).eval().print(c);
} else {
mul(numer,mul(others).eval()).hold().print(c);
}}}
attachment:trac_9314-latex_mul.patch has the doctest fixes for the Sage
library.
I will take care of the pretty printing issues from comment:3 later.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9314#comment:10>
Sage <http://www.sagemath.org>
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