I once changed dump_map() to suppress blank lines as it processed the
known portion of current dungeon level so that no blank lines would
be shown above the mapped area and at most one would be shown below.
Any blank lines within were put back. But the count of the current
block of suppressed lines wasn't being zeroed when an internal gap
did get put back, so after that every line got spurious blank lines
inserted in front of it. I'm surprised that no one seems to have
discovered this problem.
This fix also changes the dumped map to suppress trailing spaces. In
the process, I noticed that the original DUMPLOG code was clobbering
column COLNO-1 if that was ever part of known map. buf[x - 2] = '\0'
overwrote the final map character in buf[] with the terminator.
e1552679e2