Neat list. I wonder how old the German expression "Polnisch rückwärts" ( Polish [spoken] in reverse) is. I wonder if it has anything to do with Reverse Polish Notation.
Google Books found an example in the 1965 book "Sprache und Humor des Kindes". However, it does not appear to have anything to do with "Polnisch rückwärts".
While the term "Polish Notation" predates 1965, including in German as "polnische Notation", it appears to be in a specialized context not related to children's humor.
The only other Google Books reference for "Polnisch rückwärts" is a 1982 reference with nothing to do with computers.
> Der Programmiersprache Forth eilt das Schlagwort „umgekehrt polnische Notation“ voraus, was ein wenig wie „polnisch rückwärts“ klingt und auf den ersten Blick meist als Rückschritt gewertet wird.
Those are the only two uses of that phrase in archive.org. By comparison, "polnische Notation" is far more common.
While the term "Polish Notation" predates 1965, including in German as "polnische Notation", it appears to be in a specialized context not related to children's humor.
The only other Google Books reference for "Polnisch rückwärts" is a 1982 reference with nothing to do with computers.
Looking in archive.org, here's a 1984 German computer magazine which describes FORTH as „polnisch rückwärts“. https://archive.org/details/cpm-anwenderhandbuch-thom-hogana...
On the other hand, a 1986 article uses a different structure, at https://archive.org/details/hc-mein-home-computer_1986-10/pa... :
> Der Programmiersprache Forth eilt das Schlagwort „umgekehrt polnische Notation“ voraus, was ein wenig wie „polnisch rückwärts“ klingt und auf den ersten Blick meist als Rückschritt gewertet wird.
Those are the only two uses of that phrase in archive.org. By comparison, "polnische Notation" is far more common.