Some time ago I have created a small web project about Perl programming language. The site where you can execute Perl code online — PerlBanjo.com. (blog post about the release)

Today I'm happy to announce the new small project about Perl. This is the place with interactive coding tasks. You solve the task, enter the solution, system run it and tell you if it accept your submission. (="https://PerlBanjo.…

There are 135 thousand releases on CPAN now. In those releases there are about 3.8 million files with extensions .pm, .pl, .t or .pod.

Here is a link with a small research what symbols are used for indentation in all that files.

There is obvious trend, but unfortunately in this article there is no exact answer why it happen.

https://squareperl.com/en/tabs-vs-spaces-in-millions-of-perl-files