make the list of PlantUML "Features" more fair

[VladimirAlexiev]

Continuing #40 , I looked at the list Features at the bottom of https://text-to-diagram.com/?b=plantuml. Here are my comments on features marked as not supported by PlantUML

• Friendly error messages: Not just "syntax error" True, but it shows the exact error location
• Images & Icons: What are the available options for including images and icons: Any URL
  • It has some HTML tags, including <img> that lets you use any URL as image: https://plantuml.com/creole#f42f1366d9ab93bb.
  • In addition, it has a very wide set of icons (https://plantuml.com/openiconic), unicode emojis (https://plantuml.com/unicode and https://plantuml.com/creole#68305e25f5788db0) and sprites (https://plantuml.com/sprite and https://plantuml.com/stdlib)
• Markdown: Use Markdown for text objects in the diagram
  True, but it has https://plantuml.com/creole which is just about the same
• LaTeX: Render math equations suitable for academic usage Yes, see https://plantuml.com/ascii-math
• Native Github rendering: Does it render natively on Github: I guess that depends on plugins and addons. Eg for me, neither https://github.com/terrastruct/d2/blob/master/docs/flow.d2 nor https://github.dev/terrastruct/d2/blob/master/docs/flow.d2 are rendered, but PlantUML is rendered using https://chrome.google.com/webstore/detail/plantuml-visualizer/ffaloebcmkogfdkemcekamlmfkkmgkcf (eg see diagrams below)
• Code snippets: Render syntax-highlighted code snippets PlantUML supports code snippets, see https://plantuml.com/creole#ca0dbad92a874b2f, but currently not code highlighting. Then again, who wants a lot of code in a diagram?
• Responsive dark mode: Can the diagram render with both light and dark mode, switching depending on user preference. Yes, there is at http://www.plantuml.com/plantuml/ (the next URL token is uml for light mode, duml for dark)
• PDF exports: Can the CLI export PDF output: It only requires adding some jars: https://plantuml.com/pdf

In addition:

• you should not use square brackets in nodes (eg [foo] in https://text-to-diagram.com/?b=plantuml&example=containers because these get rendered as "components" with an interface icon, not simple rectangles
• PlantUML supports a large number of non-UML diagrams, see https://plantuml.com/

[VladimirAlexiev]

Here's a fixed diagram for https://text-to-diagram.com/?b=plantuml&example=chess . I removed the square brackets, used long arrows for the arrows going across the cluster:

@startuml
' Actors
"Hans Niemann" as hans

rectangle "defendants" {
  "Magnus Carlsen" as mc
  "Play Magnus Group" as playmagnus
  "Chess.com" as chesscom
  "Hikaru Nakamura" as naka

  mc -> playmagnus: Owns majority
  playmagnus <-> chesscom: Merger talks
  chesscom -> naka: Sponsoring
}

' Accusations
hans -> defendants: suing for $100M

' Offense
naka --> hans : Accused of cheating on his stream
mc --> hans : Lost then withdrew with accusations
chesscom --> hans: 72 page report of cheating
@enduml

Here is the result (which for me is rendered in github using https://chrome.google.com/webstore/detail/plantuml-visualizer/ffaloebcmkogfdkemcekamlmfkkmgkcf). I think it's quite competitive to the d2 result:

[VladimirAlexiev]

Here is a fixed diagram for https://text-to-diagram.com/?b=plantuml&example=text . Compile error: PlantUML does not support rich text is a very unfair statement. The only thing I couldn't do is include quotes in the text, since that's used to delimit the text

@startuml
rectangle description as "
== Hope is a good breakfast, but it is a bad supper

* Look into my eyes and try to forget that you have a Macy's charge card!
* The **Tree of Learning** bears the noblest fruit, but noble fruit tastes bad.

  There is nothing new under the sun, but there are lots of old things we don't know yet

* //Ambrose Bierce//
"

rectangle x

description -> x
@enduml