HTML formatting for a column affects columns in nested DataFrames with same name #982
Description
Given the following example
val df = dataFrameOf("firstName", "lastName", "age", "city", "weight", "isHappy")(
"Alice", "Cooper", 15, "London", 54, true,
"Bob", "Dylan", 45, "Dubai", 87, true,
"Charlie", "Daniels", 20, "Moscow", null, false,
"Charlie", "Chaplin", 40, "Milan", null, true,
"Bob", "Marley", 30, "Tokyo", 68, true,
"Alice", "Wolf", 20, null, 55, false,
"Charlie", "Byrd", 30, "Moscow", 90, true,
).group("firstName", "lastName").into("name")
.groupBy("city").toDataFrame()
.add("cityCopy") { "city"<String>() }
.group("city").into("cityGroup")
.rename("cityCopy").into("city")
// affects city, cityGroup.city, and group[*].city
df.format("city").with {
bold and italic and textColor(green)
}.toStandaloneHTML().openInBrowser()We'd expect only city to be affected by the format operation, but cityGroup.city and all city columns inside group are also affected.
