#11311: engine="pdflatex" in view is ignored
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Reporter: saliola | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-4.8
Component: graphics | Resolution:
Keywords: latex, pdflatex, days30 | Work_issues:
Upstream: N/A | Reviewer: Karl-Dieter
Crisman, Franco Saliola, John Palmieri
Author: Franco Saliola, John Palmieri | Merged:
Dependencies: |
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Comment(by kcrisman):
This seems to have been introduced (or expanded, at least) in #8486.
{{{
if engine and not have_pdflatex() and not have_xelatex():
print "Error: %s does not seem to be installed. Download
it from" % _Latex_prefs._option["engine_name"]
}}}
so `engine` is certainly `True` since it's nonempty, and we definitely
don't have any of those things. And it first checks whether one has
LaTeX, before it checks the engines.
Now we have
{{{
sage: sage.misc.latex._Latex_prefs._option
{'engine': 'latex', 'matrix_delimiters': ['(', ')'], 'jsmath_avoid': [],
'engine_name': 'LaTeX', 'blackboard_bold': False, 'macros': '',
'vector_delimiters': ['(', ')'], 'preamble': ''}
}}}
in a regular install. The question is whether there is anywhere `engine`
gets reset...
Aha! [http://hg.sagemath.org/sage-
main/file/9e29a3d84c48/sage/misc/latex.py#l1404 Line 1404] (of the current
4.7.2) shows that this is set to `xelatex` and then not reset.
Apparently the doctest framework doesn't clear this, I'm not sure exactly
where this all lives.
Solution should be:
* Fix the reset of the engine
* Leave the error message and `# random` it. Or even include both error
messages so that the documentation shows exactly what we expect with and
without a working LaTeX installation.
What do you think?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11311#comment:22>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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