Copy fix for id \in W

oscar-system · Aug 20, 2024 · 9774f8f · 9774f8f
1 parent 50c7982
commit 9774f8f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/experimental/LieAlgebras/src/WeylGroup.jl b/experimental/LieAlgebras/src/WeylGroup.jl
@@ -489,6 +489,8 @@ function Base.iterate(iter::ReducedExpressionIterator)
 end
 
 function Base.iterate(iter::ReducedExpressionIterator, word::Vector{UInt8})
+  isempty(word) && return nothing
+
   rk = rank(root_system(parent(iter.el)))
 
   # we need to copy word; iterate behaves differently when length is (not) known