Using a procedure with parameters as an img parameter does not work

[wiki_user]

@etardiff

procedures don’t perform any preliminary variable substitution, including their own parameters; instead, they’re parsed “inline” at the same time as the rest of the tiddler in which they’re used

thanks for the explanation(s) !

@Scott_Sauyet

I still don’t know many details of the rendering engine

on a similar tangent
i happened to find this topic
relating to html output / parser process

@Surge

I’d like to understand why that html is produced.

Info: How to Translate Wikitext to HTML

You are right, It is not immediately obvious, but there are some interesting mechanisms involved. Let’s start at the beginning, because it is important for context. TiddlyWiki Conepts A) Everything it TiddlyWiki is a tiddler B) WikiText is a concise, expressive way of typing a wide range of text formatting, hypertext and interactive features. C) TiddlyWiki’s display is driven by an underlaying collection of widgets Wikitext Rules TW wikitext follows several rules. To identify a paragraph …