Always fallback to edit-module in M-.

3 files changed, 26 insertions, 8 deletions

diff --git a/elisp/geiser-completion.el b/elisp/geiser-completion.el
index 5c2f604..d346190 100644
--- a/elisp/geiser-completion.el
+++ b/elisp/geiser-completion.el
@@ -214,6 +214,11 @@ we're looking for a module name.")
 (defsubst geiser-completion--symbol-begin (module)
   (funcall geiser-completion--symbol-begin-function module))
 
+(defun geiser-completion--module-at-point ()
+  (save-excursion
+    (goto-char (geiser-completion--symbol-begin t))
+    (ignore-errors (thing-at-point 'sexp))))
+
 (defsubst geiser-completion--prefix (module)
   (buffer-substring-no-properties (geiser-completion--symbol-begin module)
                                   (point)))
diff --git a/elisp/geiser-edit.el b/elisp/geiser-edit.el
index e8e439c..4d61edc 100644
--- a/elisp/geiser-edit.el
+++ b/elisp/geiser-edit.el
@@ -205,8 +205,10 @@ With prefix, asks for the symbol to edit."
                      (geiser-completion--read-symbol "Edit symbol: ")))
          (cmd `(:eval (:ge symbol-location ',symbol)))
          (marker (point-marker)))
-    (geiser-edit--try-edit symbol (geiser-eval--send/wait cmd))
-    (when marker (ring-insert find-tag-marker-ring marker))))
+    (condition-case nil
+        (progn (geiser-edit--try-edit symbol (geiser-eval--send/wait cmd))
+               (when marker (ring-insert find-tag-marker-ring marker)))
+      (error (geiser-edit-module-at-point)))))
 
 (defun geiser-pop-symbol-stack ()
   "Pop back to where \\[geiser-edit-symbol-at-point] was last invoked."
@@ -221,6 +223,16 @@ With prefix, asks for the symbol to edit."
   (let ((cmd `(:eval (:ge module-location '(:module ,module)))))
     (geiser-edit--try-edit module (geiser-eval--send/wait cmd) method)))
 
+
+(defun geiser-edit-module-at-point ()
+  "Opens a new window visiting the module at point."
+  (interactive)
+  (let ((marker (point-marker)))
+    (geiser-edit-module (or (geiser-completion--module-at-point)
+                            (geiser-completion--read-module)))
+    (when marker (ring-insert find-tag-marker-ring marker))))
+
+
 
 (provide 'geiser-edit)
 ;;; geiser-edit.el ends here
diff --git a/scheme/guile/geiser/doc.scm b/scheme/guile/geiser/doc.scm
index f5471b5..902f2a3 100644
--- a/scheme/guile/geiser/doc.scm
+++ b/scheme/guile/geiser/doc.scm
@@ -66,16 +66,17 @@
         (else 'variable)))
 
 (define (arguments proc)
-  (define (p-arguments prog)
-    (map (lambda (a) ((@@ (system vm program) arity->arguments-alist) prog a))
-         (or (program-arities prog) '())))
+  (define (p-args prog)
+    (let ((as (map (lambda (a)
+                     ((@@ (system vm program) arity->arguments-alist) prog a))
+                     (or (program-arities prog) '()))))
+      (and (not (null? as)) as)))
   (define (clist f) (lambda (x) (let ((y (f x))) (and y (list y)))))
   (cond ((is-a? proc <generic>) (generic-args proc))
+        ((doc->args proc) => list)
         ((procedure-property proc 'arglist) => (clist arglist->args))
         ((procedure-source proc) => (clist source->args))
-        ((doc->args proc) => list)
-        ((program? proc) (let ((a (p-arguments proc)))
-                           (and (not (null? a)) a)))
+        ((and (program? proc) (p-args proc)))
         ((procedure-property proc 'arity) => (clist arity->args))
         (else #f)))