There is no clear document for how require "foo/bar/baz" work.

[zw963]

require "foo/bar/baz"

After i test it, it seem like the lookup path is: (assume CRYSTAL_PATH is lib)

      lib/foo/bar/baz.cr
      lib/foo/bar/baz/baz.cr
      lib/foo/src/bar/baz.cr

But, i never saw any document mention it.

I consider this is a really important concept for the crystal user, but i understood it until now because there no document.

Before this, i have to use absolute path from the lib. e.g. require "foo/src/bar/baz"

[straight-shoota]

Here you go: https://crystal-lang.org/reference/1.7/syntax_and_semantics/requiring_files.html#other-forms
I think that should be sufficient documentation?

[zw963]

Here you go: https://crystal-lang.org/reference/1.7/syntax_and_semantics/requiring_files.html#other-forms I think that should be sufficient documentation?

Oops, sorry, i don't know why i missing it!

BTW: the explain in other-forms is not accurate, because require "foo/bar/baz" seem like never search foo/src/bar/baz/baz.cr.

[straight-shoota]

Indeed that seems to be the case. I figure this might be an unintended omission. So we probably need to change the implementation, not the documentation.

I think this might've eventually been lost in crystal-lang/crystal#10820.

I created crystal-lang/crystal#13210 to address the issues with require paths.

[zw963]

Oops, i thought i see it before, but i lose completely now for how require search file.

Let us not think about our implementation(it probably wrong, right?)

What is the expected search path for following requires? (for lib only)

require "foo"

# lib/foo.cr
# lib/foo/foo.cr
# lib/foo/src/foo.cr
# ???

require "foo/bar/baz"

# lib/foo/bar/baz.cr
# lib/foo/bar/baz/baz.cr
# lib/foo/src/bar/baz.cr
# ???

I remember when i first use Crystal (1.4), i read document somewhere said require "foo" will search lib/foo/src/foo/foo.cr, i even try it, it works. but, obviously, it not work anymore now for 1.7.2.

[straight-shoota]

No, lib/foo/src/foo/foo.cr was ever looked up, neither in Crystal 1.0 nor 1.4. I checked that.