Unicode characters break saving to file

[ConnectedSystems]

Principally, 4 spaces / tabs seem to be inserted at various points in the saved HTML for some reason, breaking the JavaScript.
Similarly, saving the alternate file formats also do not work - I think something is breaking the spec.

The attached zip file contains the data needed to reproduce the issue and the resulting html.
The example data includes "€" in one of the columns.

using CSV, DataFrames
using Deneb

reprod = CSV.read("example_data.csv", DataFrame)

m_count = Data(reprod) * Mark(:bar) * Encoding(
              x=(field=:year, title="Year"),
              y=(aggregate=:count, type=:quantitative, title="Count"),
              color=(field=:col1, title="Type")
          ) * title("Reproduce Issue")

# Membership revenue
m_revenue = Data(reprod) * Mark(:bar) * Encoding(
                x=(field=:year, title="Year"),
                y=(field=:col2, title="Total", aggregate=:sum, type=:quantitative),
                color=(field=:col1, title="Type")
            ) * title("Reproduce Issue")

Deneb.save("reproduced.html", [m_count m_revenue])

reproduced.zip

[brucala]

Hi @ConnectedSystems. Happy to see that someone is using this package.

Thanks for reporting this issue. The problem was with MultilineString.jl indent method: JuliaStrings/MultilineStrings.jl#10

I'll update Deneb to use the latest MultilineStrings.jl version which has a fix.

As an alternative in the meantime, this seems to work:

using CSV, DataFrames
using Deneb

reprod = CSV.read("example_data.csv", DataFrame)

# convert col1 to Int
reprod = transform(reprod, :col1 => ByRow(x -> parse(Int,split(x, "€")[1])) => :col1)

base = Data(reprod) * Mark(:bar) * Encoding(
              x=field(:year, title="Year"),
              color=field(:col1, title="Type", legend=(;format="\$")),  # use a currency format for the legend
          ) * config(
              locale=(;number=(;currency=["", "€"])),  # change currency locale to euro (appended)
          ) * title("Reproduce Issue")

m_count =Encoding(y=field("count():q", title="Count"))

# Membership revenue
m_revenue = Encoding(y=field("sum(col2):q", title="Total"))

chart = base * [m_count m_revenue]

Deneb.save("reproduced.html", chart)

[brucala]

Just open a PR to register the new version. It should be available soon