#17299: nasty bug in modular symbols, which is likely very easy to fix.
-------------------------------------+-------------------------------------
       Reporter:  was                |        Owner:  haochen_uw
           Type:  defect             |       Status:  new
       Priority:  critical           |    Milestone:  sage-6.4
      Component:  modular forms      |   Resolution:
       Keywords:                     |    Merged in:
        Authors:                     |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/haochen_uw/latexrepbug           |  35081a653922bc15298651161d307d8e9700bb80
   Dependencies:                     |     Stopgaps:
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Comment (by aapitzsch):

 Something like this seems to work.

 {{{
 #!diff
 --- a/src/sage/misc/latex.py
 +++ b/src/sage/misc/latex.py
 @@ -2349,6 +2349,8 @@ def repr_lincomb(symbols, coeffs):
                      s += " + %s"%b
              else:
                  coeff = coeff_repr(c)
 +                if coeff == "-1":
 +                    coeff = "-"
                  if first:
                      coeff = str(coeff)
                  else:
 @@ -2359,6 +2361,8 @@ def repr_lincomb(symbols, coeffs):
                  try:
                      if bv in CC:
                          s += "%s\cdot %s"%(coeff, b)
 +                    else:
 +                        s += "%s%s"%(coeff, b)
                  except Exception:
                      s += "%s%s"%(coeff, b)
              first = False
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/17299#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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