Template talk:T chart
Documentation
This template makes a T-chart with up to 6 rows (besides the header). The first row is mandatory, as is the left column of each row that's present.
{{T chart |left_heading=Fruit |
|
Some of the coding for the template gets funky because you can't mix parser functions like {{#if:}} with vertical bars needed to separate table elements. So anywhere we have {{!}} is a place where we cannot have a vertical bar (but need one).
Bugs
The right column ends up with an extra blank line for every unused row. If I don't put a carriage return between between the {{#if:}} functions, that goes away, but the the |- row separators break. I've not figured a way around that yet.
Future changes
Might be able to make a row show up if either Ln or Rn are present by doing something like this:
{{#ifexpr: {{#len:{{{L2}}}}}|{{#len:{{{R2}}}}}|code for including the row|}}