skelrc: Shiny new function to return an expanded string.

diff --git a/skelrc b/skelrc
index ef8c93b..43d6052 100644 (file)
--- a/skelrc
+++ b/skelrc
@@ -62,6 +62,23 @@ its chosen major-mode before calling `skel-include'."
   (let ((val (assq key alist)))
     (and val (cdr val))))
 
+(defun skelrc-expand-text (text)
+  "Return the result of expanding TEXT in the current context.
+
+The context is extended with any new associations formed during
+the expansion."
+  (let* ((alist skel-alist)
+        (expanded (with-temp-buffer
+                    (let ((skel-alist alist))
+                      (insert text)
+                      (goto-char (point-min))
+                      (skelrc-dribble "before: alist = `%s'" skel-alist)
+                      (skel-do-fill-in)
+                      (setq alist skel-alist)
+                      (buffer-string)))))
+    (setq skel-alist alist)
+    expanded))
+
 (defun skelrc-prefix-lines (prefix lines)
   "Return LINES, each with PREFIX prepended to the beginning.