Better source detection for functions defined by macros

If we can't find the location but know the buffer, try expanding forms
in the buffer to see if we can find the relevant function.

This is largely code from elisp-def, but it wasn't in a terribly
reusable form and I've copied it.

1 files changed, 7 insertions, 0 deletions

diff --git a/test/helpful-unit-test.el b/test/helpful-unit-test.el
index 756bc76..541639c 100644
--- a/test/helpful-unit-test.el
+++ b/test/helpful-unit-test.el
@@ -352,6 +352,13 @@ variables defined without `defvar'."
         (-let [(buf pos opened) (helpful--definition 'test-foo-edebug-defn t)]
           (should buf))))))
 
+(ert-deftest helpful--definition-defstruct ()
+  "Ensure we find the position of struct functions."
+  (-let [(buf pos _)
+         (helpful--definition #'make-ert-test t)]
+    (should buf)
+    (should pos)))
+
 (ert-deftest helpful-variable ()
   "Smoke test for `helpful-variable'."
   (helpful-variable 'tab-width))