Custom definitions for latex style

[schymans]

#6290 introduced a way to custom-define the latex style of functions, but it would be great if something similar was made possible for any variable. I used to do it in the following way, but now I get an error message:

sage: var('hi kunsati delyui')
sage: hi._latex_ = lambda: 'h_i'
sage: kunsati._latex_ = lambda: 'K_{unsat,i}'
sage: delyui._latex_ = lambda: '\delta_{yu,i}'
Traceback (most recent call last):

...
AttributeError?: 'sage.symbolic.expression.Expression' object attribute '_latex_' is read-only

Comment by Burcin Erocal on sage-devel (25/06/2006):

Since Expression is a cython class, you cannot overwrite the _latex_() method. Pynac supports setting latex names for variables at creation, but this functionality is not exposed in the wrapper. Another solution by hacking latex_variable_name() might be possible, but I would like to avoid that if possible. Feel free to open a new issue in trac about it. Cheers, Burcin

How could the Pynac funtionality of setting latex names for variables at creation be exposed?

Patches:

Patches that will resolve this ticket is posted at #6559

[jason]

There is no patch above, though the title said there was a patch.

[schymans]

Supposedly, the patch for #6559 fixes this (see comment added to description). Could you review #6559 instead? Thanks!

Stan

[burcin]

I'm closing this, since #6559 just got merged. It adds a latex_name keyword argument to var(), which is the functionality requested here.