Send clipboard via /paste

New command `/paste` that sends the clipboard in MUC, Chat etc windows.

Fix #156

src/command/cmd_funcs.c

@@ -8581,8 +8581,40 @@ gboolean
 cmd_paste(ProfWin *window, const char *const command, gchar **args)
 {
 #ifdef HAVE_GTK
-    char *buf = clipboard_get();
-    cons_show(buf);
+    char *clipboard_buffer = clipboard_get();
+
+    if (clipboard_buffer) {
+        switch (window->type) {
+             case WIN_MUC:
+                {
+                    ProfMucWin *mucwin = (ProfMucWin*)window;
+                    assert(mucwin->memcheck == PROFMUCWIN_MEMCHECK);
+                    cl_ev_send_muc_msg(mucwin, clipboard_buffer, NULL);
+                    break;
+                }
+            case WIN_CHAT:
+                {
+                    ProfChatWin *chatwin = (ProfChatWin*)window;
+                    assert(chatwin->memcheck == PROFCHATWIN_MEMCHECK);
+                    cl_ev_send_msg(chatwin, clipboard_buffer, NULL);
+                    break;
+                }
+            case WIN_PRIVATE:
+                {
+                    ProfPrivateWin *privatewin = (ProfPrivateWin*)window;
+                    assert(privatewin->memcheck == PROFPRIVATEWIN_MEMCHECK);
+                    cl_ev_send_priv_msg(privatewin, clipboard_buffer, NULL);
+                    break;
+                }
+            case WIN_CONSOLE:
+            case WIN_XML:
+            default:
+                    cons_bad_cmd_usage(command);
+                    break;
+        }
+
+        free(clipboard_buffer);
+    }
 #else
     cons_show("This version of Profanity has not been built with GTK support enabled. It is needed for the clipboard feature to work.");
 #endif