Maximise visibility of buffer when point on the last line.

[lurk.git] / lurk.el

diff --git a/lurk.el b/lurk.el
index fb0178c..8967094 100644 (file)
--- a/lurk.el
+++ b/lurk.el
@@ -271,10 +271,13 @@ portion of the source component of the message, as LURK doesn't use this.")
 (defun lurk-get-context-users (name)
   (gethash name lurk-contexts))
 
+(defun lurk-context-known-p (name)
+  (not (eq (gethash name lurk-contexts 0) 0)))
+
 (defun lurk-add-context-users (context users)
   (puthash context
-           (append users
-                   (gethash context lurk-contexts))
+           (cl-union users
+                     (gethash context lurk-contexts))
            lurk-contexts))
 
 (defun lurk-del-context-user (context user)
@@ -443,8 +446,14 @@ portion of the source component of the message, as LURK doesn't use this.")
       (fill-region (point-min) (point-max) nil t)
       (buffer-string))))
 
+(defun lurk--start-of-final-line ()
+  (with-current-buffer "*lurk*"
+    (save-excursion
+      (goto-char (point-max))
+      (line-beginning-position))))
+
 (defun lurk-display-string (context prefix &rest strings)
-  (with-current-buffer (get-buffer-create "*lurk*")
+  (with-current-buffer "*lurk*"
     (save-excursion
       (goto-char lurk-prompt-marker)
       (let* ((inhibit-read-only t)
@@ -471,7 +480,11 @@ portion of the source component of the message, as LURK doesn't use this.")
                        'face (lurk-get-context-facelist context)
                        'read-only t
                        'context context
-                       'invisible context-atom))))))))
+                       'invisible context-atom))))))
+    (dolist (window (get-buffer-window-list))
+      (if (>= (window-point window) (lurk--start-of-final-line))
+          (with-selected-window window
+            (recenter -1))))))
 
 (defun lurk-display-message (from to text)
   (let ((context (if (eq 'channel (lurk-get-context-type to))
@@ -635,15 +648,19 @@ portion of the source component of the message, as LURK doesn't use this.")
        (let* ((params (lurk-msg-params msg))
               (channel (elt params 2))
               (names (split-string (elt params 3))))
-         (lurk-add-context-users channel names)))
+         (if (lurk-context-known-p channel)
+             (lurk-add-context-users channel names)
+           (lurk-display-notice nil "Users in " channel ": " (string-join names " ")))))
 
       ("366" ; ENDOFNAMES
        (let* ((params (lurk-msg-params msg))
               (channel (elt params 1)))
-         (lurk-display-notice
-          channel
-          (lurk--as-string (length (lurk-get-context-users channel)))
-          " users in " channel)))
+         (if (lurk-context-known-p channel)
+             (lurk-display-notice
+              channel
+              (lurk--as-string (length (lurk-get-context-users channel)))
+              " users in " channel)
+           (lurk-display-notice nil "End of " channel " names list."))))
 
       ("331"
        (let* ((params (lurk-msg-params msg))