Put fish on a diet. Tracked down the biggest memory hogs and fixed them. Total allocations down by a factor of 3 or so, live allocations a few KB.

builtin.cpp

@@ -3255,7 +3255,7 @@ static int builtin_end( parser_t &parser, wchar_t **argv )
 											parser.get_job_pos()-parser.current_block->tok_pos );
 					d->definition = def;
 		
-					function_add( d, parser );	
+					function_add( *d, parser );	
 					free( def );
 				}
 				else