Fix: careful with linenumber removal in order to improve code coverage

[lkdvos]

This is a claude-aided attempt of resolving #280.
From what I could tell, the removal of the line numbers is what causes the codecov gaps.

@Jutho I'm not entirely sure if we really need these to begin with, or if this is just a cosmetic thing to make the generated expressions easier to inspect?

In any case, I still have to more carefully investigate if this actually resolves the issue, and additionally if this automatically carries over to @planar and @plansor.

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diff --git a/src/indexnotation/postprocessors.jl b/src/indexnotation/postprocessors.jl
index 21bc613..8909dd5 100644
--- a/src/indexnotation/postprocessors.jl
+++ b/src/indexnotation/postprocessors.jl
@@ -48,8 +48,10 @@ coverage).
 function removeinternallinenumbernodes(ex)
     if isexpr(ex, :block)
         # within a block, `LineNumberNode`s are statement markers: drop the internal ones
-        args = Any[removeinternallinenumbernodes(e) for e in ex.args
-            if !_isinternallinenumber(e)]
+        args = Any[
+            removeinternallinenumbernodes(e) for e in ex.args
+                if !_isinternallinenumber(e)
+        ]
         return Expr(:block, args...)
     elseif isa(ex, Expr)
         # elsewhere (e.g. the mandatory 2nd argument of a `:macrocall`) a `LineNumberNode` may
diff --git a/test/butensor.jl b/test/butensor.jl
index b0e4d50..ebb837c 100644
--- a/test/butensor.jl
+++ b/test/butensor.jl
@@ -13,10 +13,12 @@ using Bumper
     lnns = LineNumberNode[]
     collect_lnns(x) = x isa LineNumberNode ? push!(lnns, x) :
         x isa Expr && foreach(collect_lnns, x.args)
-    collect_lnns(@macroexpand @butensor begin
-        T[a, b] := X[a, c] * Y[c, b]
-        Z[a, b] := T[a, c] * W[c, b]
-    end)
+    collect_lnns(
+        @macroexpand @butensor begin
+            T[a, b] := X[a, c] * Y[c, b]
+            Z[a, b] := T[a, c] * W[c, b]
+        end
+    )
     @test !any(l -> startswith(String(l.file), pkgsrc), lnns)
     @test count(l -> String(l.file) == @__FILE__, lnns) >= 2
 end
diff --git a/test/macro_kwargs.jl b/test/macro_kwargs.jl
index 621bc05..b83d687 100644
--- a/test/macro_kwargs.jl
+++ b/test/macro_kwargs.jl
@@ -97,8 +97,10 @@ end
 # parser's own internal ones (which would otherwise pollute the package's coverage).
 @testset "line numbers (issue #280)" begin
     collectlinenumbernodes(ex, acc = LineNumberNode[]) =
-        (ex isa LineNumberNode ? push!(acc, ex) :
-         ex isa Expr && foreach(e -> collectlinenumbernodes(e, acc), ex.args); acc)
+        (
+        ex isa LineNumberNode ? push!(acc, ex) :
+            ex isa Expr && foreach(e -> collectlinenumbernodes(e, acc), ex.args); acc
+    )
     pkgsrc = dirname(pathof(TensorOperations))
     pkglnns(lnns) = filter(l -> startswith(String(l.file), pkgsrc), lnns)
     userlines(lnns) = sort!(unique!([l.line for l in lnns if String(l.file) == @__FILE__]))