feat(hotkey, browser-compat): add Esc-A (= Ctrl-A) & Esc-N (= Ctrl-N)…

… hotkeys

Functions which can now be accessed with the Esc-A hotkey:
* maple/talk.c:
    * talk_speak(): (Already commented out) Open game BWboard() (already removed)
* maple/xover.c:
    * xover_key() & xo_tag(): Tag all articles by the same author

Functions which can now be accessed with the Esc-N hotkey:
* maple/post.c:
    * post_clean_delete(): Remove an article from the list immediately

maple/post.c

@@ -4114,6 +4114,7 @@ KeyFuncList post_cb =
     {'i', {post_showBRD_setting}},  /* cache.081122:看板資訊顯示 */
     {Ctrl('P'), {post_add}},
     {Ctrl('N'), {post_clean_delete}},
+    {Meta('N'), {post_clean_delete}},
 #ifdef HAVE_MULTI_CROSSPOST
     {Ctrl('X'), {post_xcross}},
 #endif

maple/talk.c

@@ -2645,7 +2645,7 @@ talk_speak(
             if (ch <= 0)
                 break;
 #if 0   // IID.20190508: `bwboard.so` and `chess.so` do not exist anymore.
-            if (data[0] == Ctrl('A'))
+            if (data[0] == Ctrl('A') || data[0] == Meta('A'))
             { /* Thor.990219: 呼叫外掛棋盤 */
                 if (DL_NAME_CALL("bwboard.so", BWboard)(fd, 1)==-2)
                     break;
@@ -2694,7 +2694,7 @@ talk_speak(
             }
         }
 #if 0   // IID.20190508: `bwboard.so` and `chess.so` do not exist anymore.
-        else if (ch == Ctrl('A'))
+        else if (ch == Ctrl('A') || ch == Meta('A'))
         { /* Thor.990219: 呼叫外掛棋盤 */
             /* int BWboard(int sock, int later); */
             data[0] = ch;

maple/xover.c

@@ -469,7 +469,7 @@ xo_tag(
         return XO_NONE;
 
     head = (const HDR *) xo_pool_base + xo->pos;
-    if (op == Ctrl('A'))
+    if (op == Ctrl('A') || op == Meta('A'))
     {
         token = head->owner;
         op = 0;
@@ -2001,7 +2001,7 @@ xover_key(
             }
             return XO_NONE;
         }
-        if (cmd == Ctrl('A') || cmd == Ctrl('T') || cmd == Meta('T'))
+        if (cmd == Ctrl('A') || cmd == Meta('A') || cmd == Ctrl('T') || cmd == Meta('T'))
         {
             return xo_tag(xo, cmd);
         }