Title: Excluding school projects and toy languages, who here has created a programming language and why?<p>I&#x27;ll go first.  13 years ago I created a specialized language for processing XML data.  XmlPl marries the syntax of C, XML and XPath.  It is very fast and efficient.  It never caught on.  See http:&#x2F;&#x2F;xmlpl.org.
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