Description

According toperldoc -f chdir:

It returns true on success, false otherwise.

However,chdir actually returns (integer) 1 and 0. This is mostly observable in the failure case, which (according to the documentation) should return a value that iseq "", but isn't.

Steps to Reproduce

$ perl -wE 'say chdir "/invalid*"'0$ perl -Mexperimental=builtin -wE 'say builtin::is_bool chdir "/invalid*"'$

Expected behavior

$ perl -wE 'say chdir "/invalid*"'$ perl -Mexperimental=builtin -wE 'say builtin::is_bool chdir "/invalid*"'1$

I.e. a false value should stringify to the empty string and beis_bool.

Alternatively, the documentation should be changed to match the existing behavior.

(This is with v5.40.0.)