Move mentions concatenation into a function for a reply.

2 files changed, 51 insertions, 29 deletions

diff --git a/lisp/mastodon-toot.el b/lisp/mastodon-toot.el
index c19f8e3..c1d3ffa 100644
--- a/lisp/mastodon-toot.el
+++ b/lisp/mastodon-toot.el
@@ -800,11 +800,19 @@ Buffer-local variable `mastodon-toot-previous-window-config' holds the config."
   (set-window-configuration (car config))
   (goto-char (cadr config)))
 
+(defun mastodon-toot--mentions-to-string (mentions)
+  "Applies mastodon-toot--process-local function to each mention,
+removes empty string (self) from result and joins the sequence with \" \"."
+  (mapconcat (lambda(mention) mention)
+	     (remove "" (mapcar (lambda(x) (mastodon-toot--process-local x))
+				mentions))
+	     " "))
+
 (defun mastodon-toot--process-local (acct)
   "Add domain to local ACCT and replace the curent user name with \"\".
 
 Mastodon requires the full user@domain, even in the case of local accts.
-eg. \"user\" -> \"user@local.social \" (when local.social is the domain of the
+eg. \"user\" -> \"user@local.social\" (when local.social is the domain of the
 mastodon-instance-url).
 eg. \"yourusername\" -> \"\"
 eg. \"feduser@fed.social\" -> \"feduser@fed.social\"."
@@ -814,19 +822,17 @@ eg. \"feduser@fed.social\" -> \"feduser@fed.social\"."
                    (cadr (split-string mastodon-instance-url "/" t))))))
 
 (defun mastodon-toot--mentions (status)
-  "Extract mentions from STATUS and process them into a string."
+  "Extract mentions (not the reply-to author or booster) from STATUS and process them into a string."
   (interactive)
   (let* ((boosted (mastodon-tl--field 'reblog status))
          (mentions
           (if boosted
-              (alist-get 'mentions (alist-get 'reblog status))
-            (alist-get 'mentions status))))
-    (string-trim (mapconcat (lambda(x) (mastodon-toot--process-local
-                           (alist-get 'acct x)))
-               ;; reverse does not work on vectors in 24.5
-               (reverse (append mentions nil))
-               " "))))
-
+	      (alist-get 'mentions (alist-get 'reblog status))
+	    (alist-get 'mentions status))))
+    ;; reverse does not work on vectors in 24.5
+    (mapcar (lambda(x) (alist-get 'acct x))
+	    (reverse mentions))))
+    
 (defun mastodon-toot--get-bounds (regex)
   "Get bounds of tag or handle before point using REGEX."
   ;; needed because # and @ are not part of any existing thing at point
@@ -917,26 +923,21 @@ text of the toot being replied to in the compose buffer."
     (mastodon-toot (when user
                      (if booster
                          (if (and (not (equal user booster))
-                                  (not (string-match booster mentions)))
+                                  (not (member booster mentions)))
                              ;; different booster, user and mentions:
-                             (concat (mastodon-toot--process-local user)
-                                     ;; "@" booster " "
-                                     (mastodon-toot--process-local booster)
-                                     mentions)
+			     (mastodon-toot--mentions-to-string (append (list user booster) mentions nil))
                            ;; booster is either user or in mentions:
-                           (if (not (string-match user mentions))
+                           (if (not (member user mentions))
                                ;; user not already in mentions:
-                               (concat (mastodon-toot--process-local user)
-                                       mentions)
+			       (mastodon-toot--mentions-to-string (append (list user) mentions nil))
                              ;; user already in mentions:
-                             mentions))
+                             (mastodon-toot--mentions-to-string (copy-sequence mentions))))
                        ;; ELSE no booster:
-                       (if (not (string-match user mentions))
+                       (if (not (member user mentions))
                            ;; user not in mentions:
-                           (concat (mastodon-toot--process-local user)
-                                   mentions)
+			   (mastodon-toot--mentions-to-string (append (list user) mentions nil))
                          ;; user in mentions already:
-                         mentions)))
+                         (mastodon-toot--mentions-to-string (copy-sequence mentions)))))
                    id
                    (or base-toot toot))))
 
diff --git a/test/mastodon-toot-tests.el b/test/mastodon-toot-tests.el
index 5d4ef03..69333c0 100644
--- a/test/mastodon-toot-tests.el
+++ b/test/mastodon-toot-tests.el
@@ -56,21 +56,33 @@ Transfer-Encoding: chunked")
                 (username . "local")
                 (url . "")
                 (acct . "local"))])))
-
 (defconst mastodon-toot-no-mention
   '((mentions . [])))
 
+(defconst mastodon-toot--multi-mention-extracted
+  '("local" "federated@federated.social" "federated@federated.cafe"))
+
 (ert-deftest mastodon-toot--multi-mentions ()
   "Should build a correct mention string from the test toot data.
 
 Even the local name \"local\" gets a domain name added."
   (let ((mastodon-auth--acct-alist '(("https://local.social". "null")))
         (mastodon-instance-url "https://local.social"))
-    (should (string=
+    (should (equal
              (mastodon-toot--mentions mastodon-toot--multi-mention)
+             '("local" "federated@federated.social" "federated@federated.cafe")))))
+
+(ert-deftest mastodon-toot--multi-mentions-to-string ()
+  "Should build a correct mention string from the test toot data.
+
+Even the local name \"local\" gets a domain name added."
+  (let ((mastodon-auth--acct-alist '(("https://local.social". "null")))
+        (mastodon-instance-url "https://local.social"))
+    (should (string=
+             (mastodon-toot--mentions-to-string mastodon-toot--multi-mention-extracted)
              "@local@local.social @federated@federated.social @federated@federated.cafe"))))
 
-(ert-deftest mastodon-toot--multi-mentions-with-name ()
+(ert-deftest mastodon-toot--multi-mentions-with-name-to-string ()
   "Should build a correct mention string omitting self.
 
 Here \"local\" is the user themselves and gets omitted from the
@@ -79,15 +91,24 @@ mention string."
          '(("https://local.social". "local")))
         (mastodon-instance-url "https://local.social"))
     (should (string=
-             (mastodon-toot--mentions mastodon-toot--multi-mention)
+             (mastodon-toot--mentions-to-string mastodon-toot--multi-mention-extracted)
              "@federated@federated.social @federated@federated.cafe"))))
 
+(ert-deftest mastodon-toot--no-mention-to-string ()
+  "Should return and empty string."
+  (let ((mastodon-auth--acct-alist
+         '(("https://local.social". "local")))
+        (mastodon-instance-url "https://local.social"))
+    (should (string=
+             (mastodon-toot--mentions-to-string nil)
+             ""))))
+
 (ert-deftest mastodon-toot--no-mention ()
-  "Should construct an empty mention string without mentions."
+  "Should construct an empty mention list without mentions."
   (let ((mastodon-auth--acct-alist
          '(("https://local.social". "null")))
         (mastodon-instance-url "https://local.social"))
-    (should (string= (mastodon-toot--mentions mastodon-toot-no-mention) ""))))
+    (should (equal (mastodon-toot--mentions mastodon-toot-no-mention) nil))))
 
 ;; TODO: test y-or-no-p with mastodon-toot--cancel
 (ert-deftest mastodon-toot--kill ()