Once, some well known "C" developer, post an article about the current version of the Pascal programming version. Contrary to the Pascal community beliefs, the article had a lot of good critical points.
So, the main "Pascal" developer, added or changed features, and, the newer versions, allow to do everything, that was missing.
This sounds like a garbled reference to Kernighan's Why Pascal is Not My Favorite Programming Language. The title is drily amusing, and the points made in the article are technically true, but I can't help thinking that the dissing of Pascal is a bit disingenuous and/or missing the point. The language wasn't even designed for system programming, but as a teaching aid. Its popularity far outside the original remit just underscores the dearth of sane high-level languages at the time.
Anyway, Wirth didn't tweak Pascal; he designed a completely new language, Modula-2, which, by the way, happened before Kernighan's article.