[wruza]

I remember int/impl sections since the 1990’s turbo pascal, which wasn’t “object” still, iirc. Also, commercial closed-source units (modules) were often distributed in a .tpu/.dcu + .int form, where .int was basically its source code without the implementation section.

[fuzztester]

Interesting.

Yes, I remember the .tpu and .dcu filename extensions.

IIRC, .tpu stood for turbo pascal unit, and .dcu may have meant delphi compiled unit, not sure of the latter.

I don't remember the .int extension, but it would have been there, of course, if you say so.

What was the use of the .int file?

[wruza]

It was literally the unit with implementation part just missing. Sort of a header that you can just read(?). Idk if it played a role in compilation, probably not. But some commercial libraries packaged them as well. Here, look at this random repo: https://github.com/keskival/turbo-pascal-experiments/tree/ma... -- few int files at the end of a list.

This page mentions a few ints without any context: https://comp.lang.pascal.borland.narkive.com/1B3WeJkX/rebuil...

This guy seems to package ints for documentation purposes: https://www.wrotniak.net/hplx/lxtpgr.html

Man this is nostalgic... T-T

[fuzztester]

Got it, thanks.