show possible monsters per level (feature)?

[runlow]

Years ago I wrote a patch which upon a keypress would show all the possible monsters on the level. Similar to how pressing = shows you your rings - E (for "enemies") showed what monsters you could expect on the level. It was a bit more convenient than looking it up. Lost the code since unfortunately. Of course one could just memorise the monsters. While this would change how the game works - it's not changing core gameplay, I think it's still in the same spirit.

m or M (for "monsters") could work too but they seem to be already used - not quite sure for what but can look it up.

Let me know if you plan on adding stuff like this - if this is interesting/useful and within scope of the project - or if preferring to keep the game the way it was as long as it runs.

[runlow]

This seems to work well enough:

diff --git a/include/extern.h b/include/extern.h
index c2b6f4e..2b21125 100644
--- a/include/extern.h
+++ b/include/extern.h
@@ -131,0 +132 @@ void mv_aquatars();
+void mon_list();
diff --git a/src/monster.c b/src/monster.c
index 18c42b5..55acc30 100644
--- a/src/monster.c
+++ b/src/monster.c
@@ -764,0 +765,15 @@ void mv_aquatars() {
+
+void mon_list() {
+       char buf[30];
+       char list[11];
+       int c=0;
+       for (int i=0;i<MONSTERS;i++) {
+               if ((cur_level >= mon_tab[i].first_level) &&
+                       (cur_level <= mon_tab[i].last_level)) {
+                        list[c++]=mon_tab[i].m_char;
+               }
+               list[c] = 0;
+       }
+       sprintf(buf, "expect monsters: %s", list);
+       message(buf, 0);
+}
diff --git a/src/play.c b/src/play.c
index 4ce3bf7..94a26e8 100644
--- a/src/play.c
+++ b/src/play.c
@@ -98,0 +99,3 @@ CH:
+                       case 'M':
+                               mon_list();
+                               break;

Only small complaint is that with this the monsters aren't listed in the order that they appear and disappear from the pool, which is:
KEBSHIROZLCQANYFTWPXUMVGJD