Add facility to make module functions interactive (Bug#23486).

* src/module-env-28.h: Add field for 'make_interactive' function.

* src/emacs-module.c (Lisp_Module_Function): Add new field holding the
interactive form.
(allocate_module_function): Adapt to structure layout change.
(module_make_interactive, module_function_interactive_form): New
functions.
(initialize_environment): Use them.

* src/eval.c (Fcommandp):
* src/data.c (Finteractive_form): Also handle interactive module
functions.

* test/data/emacs-module/mod-test.c (Fmod_test_identity): New test
function.
(emacs_module_init): Create two interactive module test functions.

* test/src/emacs-module-tests.el (module/interactive/return-t)
(module/interactive/return-t-int, module/interactive/identity):
New unit tests.

* doc/lispref/internals.texi (Module Functions): Document new
function.  Rework paragraph about wrapping module functions, as the
example no longer applies.

* etc/NEWS: Document new facility.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/module-env-28.h b/src/module-env-28.h
index 5d884c148c4..40b03b92b52 100644
--- a/src/module-env-28.h
+++ b/src/module-env-28.h
@@ -12,3 +12,7 @@
 
   int (*open_channel) (emacs_env *env, emacs_value pipe_process)
     EMACS_ATTRIBUTE_NONNULL (1);
+
+  void (*make_interactive) (emacs_env *env, emacs_value function,
+                            emacs_value spec)
+    EMACS_ATTRIBUTE_NONNULL (1);