[notcurses] handle alt cursor

Author: tstack

src/third-party/notcurses/src/lib/in.c

@@ -163,6 +163,13 @@ prep_xtmodkeys(inputctx* ictx){
       .modifiers = NCKEY_MOD_CTRL, },
     { .esc = "\x1b[6S", .key = NCKEY_F04,
       .modifiers = NCKEY_MOD_CTRL | NCKEY_MOD_SHIFT, },
+
+    { .esc = "\033b", .key = NCKEY_LEFT,
+      .modifiers = NCKEY_MOD_ALT },
+    { .esc = "\033f", .key = NCKEY_RIGHT,
+        .modifiers = NCKEY_MOD_ALT },
+
+
     { .esc = NULL, .key = 0, },
   }, *k;
   for(k = keys ; k->esc ; ++k){

src/vt52_curses.cc

@@ -143,13 +143,15 @@ vt52_curses::map_input(const ncinput& ch)
         return string_fragment::from_c_str(&this->vc_map_buffer);
     }
 
-    if ((ncinput_shift_p(&ch) || ncinput_ctrl_p(&ch) || ncinput_alt_p(&ch))
+    if ((ncinput_shift_p(&ch) || ncinput_ctrl_p(&ch) || ncinput_alt_p(&ch)
+         || ncinput_meta_p(&ch))
         && ch.id == NCKEY_LEFT)
     {
         return string_fragment::from_const("\033b");
     }
 
-    if ((ncinput_shift_p(&ch) || ncinput_ctrl_p(&ch) || ncinput_alt_p(&ch))
+    if ((ncinput_shift_p(&ch) || ncinput_ctrl_p(&ch) || ncinput_alt_p(&ch)
+         || ncinput_meta_p(&ch))
         && ch.id == NCKEY_RIGHT)
     {
         return string_fragment::from_const("\033f");