xref: Ignore unused function in any module

[denizdogan]

I have a project with hundreds of modules with an exported start_link/1 function. Can I configure Xref to ignore exports_not_used for any such function?

[ferd]

I think you can, but it will require specific xref formulas (see https://www.erlang.org/doc/apps/tools/xref.html).

It looks like our default expression is:

"(xc - uc) || (xu - x - b - (\"mod\":\".*foo\"/\"4\"))"
 (external calls - unresolved) OR (externally used - exported - used BIFS - (mod:*foo/4))

I think you might be able to add something like (...) - (\"*\":\"start_link\"/\"*\") in there to ignore all start_link calls, but I'm not sure, I haven't used the set syntax from xref a lot.