DEBUGFILES

Fetching a value of DEBUGFILES from the environment to enable
debugpline() messages was intended to operate in wizard mode only
but that wasn't enforced.

doc/fixes3-7-0.txt

@@ -1414,6 +1414,7 @@ shopkeepers magnified the cost of shop items used up as a group; normally
 the tile for Ixoth (knight's quest nemesis) depicted a demon rather than a
 	dragon; change it to be a red dragon
 untrapping containers or doors gives some experience
+only honor DEBUGFILES (for activating debugpline() calls) when in wizard mode
 
 
 Fixes to 3.7.0-x General Problems Exposed Via git Repository

src/files.c

@@ -4519,6 +4519,11 @@ debugcore(const char *filename, boolean wildcards)
 {
     const char *debugfiles, *p;
 
+    /* debugpline() messages might disclose information that the player
+       doesn't normally get to see, so only display them in wizard mode */
+    if (!wizard)
+        return FALSE;
+
     if (!filename || !*filename)
         return FALSE; /* sanity precaution */