Permit joining adjacent lists without intervening whitespace.

Ignore-this: c058945ef1f3c5590c36a034121811e8

Insert whitespace if it may be necessary.

Thanks to Eitan Postavsky for the bug report.

darcs-hash:20110322074446-00fcc-e3303edd5c9055a9687d22f99379d23f8879eba7

1 files changed, 6 insertions, 1 deletions

diff --git a/paredit.el b/paredit.el
index 6d8d827..cbbbafb 100644
--- a/paredit.el
+++ b/paredit.el
@@ -2282,7 +2282,7 @@ Both must be lists, strings, or atoms; error if there is a mismatch."
               (right-char (char-after right-point)))
           (let ((left-syntax (char-syntax left-char))
                 (right-syntax (char-syntax right-char)))
-            (cond ((>= left-point right-point)
+            (cond ((< right-point left-point)
                    (error "Can't join a datum with itself."))
                   ((and (eq left-syntax  ?\) )
                         (eq right-syntax ?\( )
@@ -2293,6 +2293,11 @@ Both must be lists, strings, or atoms; error if there is a mismatch."
                    (delete-char 1)
                    (goto-char left-point)
                    (backward-delete-char 1)
+                   ;; Heuristic kludge: (foo)(bar) => (foo bar).
+                   (if (and (= left-point right-point)
+                            (not (or (eq ?\s (char-syntax (char-before)))
+                                     (eq ?\s (char-syntax (char-after))))))
+                       (insert ?\s))
                    (backward-up-list)
                    (indent-sexp))
                   ((and (eq left-syntax  ?\" )