Fix display of ampersand (#18)

* Fix ampersand display

* Fix ampersand display

* Add test for ampersand

* Add testing for Julia 1.0

* Fix typo in test

* Disallow failures on nightly

Author: dpsanders

.travis.yml

@@ -7,11 +7,12 @@ os:
 
 julia:
   - 0.7
+  - 1.0
   - nightly
 
-matrix:
-  allow_failures:
-    - julia: nightly
+#matrix:
+#  allow_failures:
+#    - julia: nightly
 
 notifications:
   email: false

src/display.jl

@@ -2,7 +2,13 @@
 # latex treats # as a special character, so we have to escape it. See:
 # https://github.com/sisl/TikzGraphs.jl/issues/12
 
-latex_escape(s::String) = replace(s, "#"=>"\\#")
+# latex_escape(s::String) = replace(s, Dict("#"=>"\\#", "&"=>"\\&"))
+
+function latex_escape(s::String)
+    s = replace(s, "#"=>"\\#")
+    s = replace(s, "&"=>"\\&")
+    return s
+end
 
 "Convert a symbol or  into a LaTeX label"
 function latex_label(sym)

test/runtests.jl

@@ -24,6 +24,9 @@ end
     expr = Expr(Symbol("##271"))
     t = walk_tree(expr)
     @test t.labels[1] == Symbol("##271")
+
+    t = @tree x && y
+    @test TreeView.latex_escape(string(t.labels[1])) == "\\&\\&"
 end
 
 @testset "DAG" begin