Merge pull request #96 from JuliaAlgebra/fix-show

Fix show for variables with indices larger than 9

Author: saschatimme

src/show.jl

@@ -29,7 +29,7 @@ function print_subscript(io::IO, mime, indices)
 end
 
 const unicode_subscripts = ("₀","₁","₂","₃","₄","₅","₆","₇","₈","₉")
-unicode_subscript(i) = unicode_subscripts[i+1]
+unicode_subscript(i) = join(unicode_subscripts[d+1] for d in digits(i))
 
 # MONOMIALS
 

test/show.jl

@@ -30,6 +30,10 @@
     @test sprint(show, sum(i*x[i]^i for i=1:10)) == "10x₉¹⁰ + 9x₈⁹ + 8x₇⁸ + 7x₆⁷ + 6x₅⁶ + 5x₄⁵ + 4x₃⁴ + 3x₂³ + 2x₁² + x₀"
     @test sprint(show, "text/latex", sum(i*x[i]^i for i=1:10)) == "10x_{9}^{10} + 9x_{8}^{9} + 8x_{7}^{8} + 7x_{6}^{7} + 6x_{5}^{6} + 5x_{4}^{5} + 4x_{3}^{4} + 3x_{2}^{3} + 2x_{1}^{2} + x_{0}"
 
+    Mod.@polyvar x[1:11]
+    @test sprint(show, "text/latex", x[11]) == "x_{11}"
+    @test sprint(show, x[11]) == "x₁₁"
+
     # #This is only supported by DynamicPolynomials so far
     #     Mod.@polyvar A[1:2, 1:2]
     #     @test sprint(show, sum(A)) == "A₁₋₁ + A₂₋₁ + A₁₋₂ + A₂₋₂"