What is the most common filename extension of a Forth source code file?

conventions, forth

Solution

I searched for various file extension on GitHub (plus "dup drop swap"), and this was the result:

- .fs 4783 hits

- .fth 1144

- .4th 509

- .f 398

- .fr 143

- .4 55

- .frt 46

- .scr 30

- .forth 20

- .ft 11

- .fb 4

- .blk 2

- .seq 1

- .ans 1

- .for 1

- .fo 0

If nothing else, this shows there are many file extensions to chose from.

Problem

I have seen people save Forth source code files with the extensions `.4th`, `.fth`, `.frt` and `.f`. Which is the most common filename extension of Forth source code files?

Original source