setting a custom symbol map in 64 bit version produces strange results

[Alexander Gabriel]

Ubuntu version is 9.10
Package version is 3.4.3-10.6ubuntu2

Configuring a custom symbol map via the config file leads to unexpected results.
Tested with "DUNGEONS=" option. Values seem to get excepted mod 128. The effect is that much of the ascii symbol table needed to display the dungeon can't be reached.
Example:
"|" for vertical walls corresponds to code 179.
179 mod 128 equals 51.
So instead of "|" nethack displays "3" (which corresponds to code 51).

[James Cowgill (jcowgill)]

Using 8-bit characters (>= 128) requires enabling the 'eight_bit_tty' option. The option is disabled by default because it generally requires some terminal configuration adjustments for the characters to display properly.