TinyMUX 2.6:  CHANGES
Last Update:  April 2010

Major changes that may affect performance and require softcode tweaks:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 -- Deprecated LSTACK(), POP(), PUSH(), PEEK(), EMPTY(), and ITEMS().
    These functions are still available via the --enabled-deprecated
    configuration switch.  Requested by Ian.
 -- Port code to the 64-bit edition of Windows XP.  Jake and Brazil.


Feature Additions:
~~~~~~~~~~~~~~~~~
 -- FCOUNT(<expression>) to tally function invocations in <expression>.
    Requested by Ian.
 -- Add SITEINFO() to return the site flags for a player or port.  Added
    by Jake.
 -- Use Moniker instead of name in enter/leave emits, rob, kill, @toad,
    boot, and in other similar situations.
 -- Add support for %=<attr> substitution. From TinyMUSH 3.
 -- Use localtime_r() if available. By Brazil.
 -- Added command line switch (-n) to control choice of networking
    method on Win32.
 -- Added support for 2-argument mix().
 -- Added optional third 'step' parameter to lnum().
 -- Added optional second argument for lcon() for subseting the returned
    list by type.
 -- The 'You own a floating room' message is only given for rooms which
    are not connected to either the player_startint_room or to a room
    marked FLOATING. Previously, every room not connected to the
    player_starting_room had to be marked FLOATING.
 -- Added QUELL flag from Firan to temporarily suppress Wizard powers.
 -- Added @switch/notify.
 -- Merge Firan MUX source modification and collected them under the
    --enable-firanmux ./configuration switch. This also typically
    requires the --enable-memorybased switch. Some of the following
    may eventually be enabled in the default build:

    Attributes:  @alead, @lead, @olead, and @color
    Permissions: no_immobile, no_restricted
    Options:     immobile_message, sql_server, sql_user, sql_password,
                 sql_database, mail_server, mail_ehlo, mail_sendaddr,
                 mail_sendname, and mail_subject.
    Flags:       LINEWRAP, IMMOBILE, RESTRICTED, and PARENT.
    Functions:   sql(), setparent(), setname(), trigger(), mailsize(),
                 mailsubj(), mailj(), text(), successes(), and
                 distribute().

 -- Added @email command from Firan MUX to the default build.
 -- Added --enable-firanmuxconvert which turns on code to remap three
    conflicting attribute numbers. The first database load requires
    this switch, and then it should be turned off.
 -- Included distribute() in the default build.
 -- Added float_precision configuration parameter.
 -- Added TRACE attribute flag which provide a finer-grain debugging
    tool than @set'ing TRACE on the object. Requested by Nixer.
    Implemented by Brazil.
 -- Added escapes for CR, LF, TAB, and ESC to the flatfile format. This
    flatfile no longer contains a mix of CRLF and LF to confuse flatfile
    portability.
 -- Add lflags(<obj>/<attr>) form similar to flags(<obj>/<attr>).
 -- @power will accept multiple power changes in one command.
 -- Add @trigger/notify.
 -- Added etimefmt().
 -- Added nine additional parameters to map() which (if present) are
    passed in as arguments %1-%9.  Suggested by Ian.
 -- Added nine additional parameters to filter() and filterbool() which
    (if present) are passed in as arguments %1-%9.  Suggested by Ronan.
 -- Added lbuf_size as a read-only configuration option so that
    config(lbuf_size) can report it to softcode.
 -- Added STEP() following TinyMUSH and RhostMUSH (Issue 1).
 -- Add /nostrip switch to @chown, @chownall, and @clone.
 -- Add new successes() code from Jon@Firan.
 -- Combine old and new versions of SUCCESSES().
 -- Added comalias, doing, exitname, malias, maliasdesc, and password
    tests to VALID() (Issue 211).
 -- Added no_name attribute flag to suppress name on oattribute emits
    (Issue 220).
 -- Added /no_name switch to @verb (Issue 221).
 -- Added stripped_flags configuration option (Issue 200).  This
    affects guests, @chown, @chownall, and @clone.
 -- Do not display MOTD/WIZMOTD unless @motd/@wizmotd is set.
 -- Add support for loading TinyMUX 2.7 flatfiles, mail, and comsys.


Bug Fixes:
~~~~~~~~~
 -- Fix over one thousand level 4 warnings.  Jake and Brazil.
 -- Deprecate use of strcpy() and strncpy().  Jake and Brazil.
 -- Use size_t where appropriate.  Jake and Brazil.
 -- Deprecate use of sprintf().  By Brazil.
 -- Deprecate use of localtime().  By Brazil.
 -- Fix 'round(-0.5,0)' --> '-0' to be '0' instead.
 -- Disallow the train command from being used on itself.
 -- Add protection to @chownall that victim be a player object.
 -- Fix uninitialized variable in HASRXLEVEL(). It should have used
    'executor' instead of 'player'.
 -- Fix time_t handling for 64-bit machines. Timezones could be wrong
    for dates earlier than Jan 1 1970 on 64-bit Unix.
 -- Fix @hook for goto command. Being unable to move also affected the
    ability to use other commands. Reported by K hall.
 -- Added checking to convsecs() to return '#-1 INVALID DATE" if first
    argument is outside the supported range.
 -- All but the last part of very Long lines from the network were
    discarded when for very long lines, only the first part should be
    saved.  Not a crashing bug.
 -- Server should not attempt to @clone Created and Modified attributes.
 -- Fix single-character case in pos(). It would never return success.
    Bug introduced in 2.6. It does not appear in 2.4.
 -- Change isdbref() to return '0' instead of '#-1 ISDBEF EXPECTS...'
 -- Fix ANSI overflow bug in ANSI_String_Copy() introduced by using an
    unsigned size_t in place of a signed 'int'. Bug introduced in 2.6.
 -- Add 'other half' of buffer overflow protection to a case in
    process_cmdent().  Without the other half, the first half causes a
    crash instead of prventing it.  Found and fixed by Sparks.
 -- Remove double evaluation from distribute() and sql().
 -- Save/Restore global registers while executing @descformat.
 -- Fix map(), filter(), and filterbool() to avoid evaluating the given
    attribute for an empty list.
 -- Strip ANSI from messages before matching messages against @filter
    and @infilter patterns.
 -- Zap trailing NL in help topics.
 -- Added help topic for HTML flag.
 -- When listening on multiple ports, continue to run the server as long
    as one of the requested ports is available.
 -- mix() doesn't include a function-invocation test (Issue 71).
 -- Examples in help topics show old-style 'say' (Issue 72).
 -- Attribute-level tracing does not report sortby() comparisons
    (Issue 73).
 -- @email help doesn't mention @mail addy/subject=body form (Issue 86).
 -- @email - do {} while () to simplify the sources and reduce the
    sizeof the program (Issue 79).
 -- @email - MUX_VERSION replaced with mudstate.short_ver (Issue 78).
 -- @email - mod_email_sock_readline() adds a '\0' one position too far
    (Issue 87).
 -- @email - Remove unnecessary zeroing of buffers (Issue 80).
 -- @email - Typo in do_plusmail of '0' instead of '\0' (Issue 90).
 -- @email - Unnecessary strlen() (Issue 81).
 -- @email - do_plusmail loops look at undefined bytes if inputline is
    1, 2, or 3 bytes long (Issue 89).
 -- @email - Memory leaks (Issue 84).
 -- Fix SIGSEGV when udefault() gets more than 12 arguments.  Fixed by
    Alierak.
 -- @email - initialize input buffer to the empty string to cover
    return(0) error cases.  Probably introduced by Issue 80 fix.  Fixed
    by Alierak.
 -- @email - Comment doesn't match code (Issue 82).
 -- %v accepts accented characters (Issue 91).  Found by Alierak.
 -- sortby() breaks when nested (Issue 88).  Found by Alierak.
 -- @email - Config options may contain CRLF sequences (Issue 76). Found
    by Alierak.
 -- @email - Subject and recipient address may contain CRLF sequences
    (Issue 77). Found by Alierak.
 -- Fix theoretical crash if DNS slave returns half a result.  Found and
    fixed by Alierak.
 -- Fix lbuf leak from Issue 88 fix.  Found and fixed by Alierak.
 -- All return paths from process_command(), new_connection(), and
    check_connect() must restore mudstate.debug_cmd.  Found and fixed
    by Alierak.
 -- Multiple addcom gives no warning (Issue 93). Fixed addcom topic.
 -- @email - Message body may be too long to append CRLF.CRLF (Issue 74).
    Found by Alierak.
 -- @email needs to handle CRLF.CRLF in message body (Issue 75).  Found
    by Alierak.
 -- @email - Accents could affect message validity (Issue 85).  Found by
    Alierak.
 -- Allow addcom to channel names containing spaces (Issue 58).
 -- Fixed channels() help topic (Issue 54).  The channels()
    implementation doesn't not return a comma-space separated list, but
    a space-only separated list.
 -- Fixed an lbuf leak in hasquota() introduced in TinyMUX 2.1. Bug
    found and fixed by Alierak.
 -- Document @clone/preserve switch.
 -- Update TRACE helpfile for new attribute flag functionality (Issue 104).
 -- Add @htdesc and @vrml_url documentation (Issue 44).
 -- Local declaration of ltdWarp in cque.cpp hid global declaration.
    @timewarp/queue would have ignored <secs> and become a no-op
    (Issue 167).
 -- @timewarp/queue advanced a queued command's displayed time (as seen
    by @ps), but did not update the run time of the underlying task, so
    the command did not execute any sooner (Issue 172).
 -- Protect qsort() from invalid arguments that should not happen
    (Issue 125 and 159).
 -- Add 'GameFull' reason which should never be referenced, but it
    suppresses a compiler warning (Issue 148).
 -- Remove arbitrary constant, 1000, and re-work @forwardlist codepaths
    (Issue 168 and 175).
 -- Suppress compiler warning in anum_extend() and compact code
    (Issues 169 and 170).
 -- Suppress compiler warning in add_helpfile() (Issue 165).
 -- Corrected 'shutodnw' typo in 'wizhelp signals' (Issue 177).
 -- Add checking and warning messages for next free attribute, range of
    numbers used with names, and range of numbers used with objects
    (Issues 176, 180, and 181).
 -- Require flagnames to be at least 1 character (Issue 183).
 -- Fix @flag wizhelp topic (Issue 182).
 -- Suppress compiler warning in conf.cpp (Issues 161 and 164).
 -- Suppress compiler warning in command.cpp (Issue 149).
 -- Write mux_open() to avoid direct use of open() (Issue 121).
 -- Remove all calls to fscanf() in mail.cpp and comsys.cpp (Issue 119).
 -- Fixed color leak in object names for @find, examine, inventory, and
    look when length of ANSI sequence exceeded 200 byte (Issue 184).
    Reported by K Hall.  Not a crashing issue.
 -- Suppress compiler warnings in player.cpp (Issue 143 and 144).
 -- Suppress compiler warnings in stringutil.cpp (Issue 109).
 -- Suppress compiler warnings in help.cpp (Issue 132).
 -- Suppress compiler warnings in netcommon.cpp (Issues 141, 142, 186,
    and 210).
 -- Fixed uninitialized variables in fun_fmod() and fun_power() for
    non-typical build.
 -- Fix two configuration tests that broke with gcc 4.1.2.
 -- Avoid using strerror() directly (Issue 120).
 -- Fix compiler warnings in strtod.cpp (Issues 113, 114, and 115).
 -- Fix compiler warnings in functions.cpp (Issues 123, 124, 126, 127,
    128, 129, 130, and 131).
 -- Fix compiler warnings in funceval.cpp (Issue 122).
 -- Fix compiler warnings in comsys.cpp (Issues 151, 157 and 158).
 -- Avoid using strncpy (Issue 118).
 -- Fix compiler warnings in mail.cpp (Issues 133, 134, 135, 136, 137,
    138, 139, and 140).
 -- Fix compiler warnings in conf.cpp (Issue 162, 163, and 166).
 -- Fixed double lbuf_free() introduced in 2.6.0.3 (Issue 188).
 -- Fixed compiler warnings in alloc.cpp (Issue 146 and 147).
 -- Fixed infinite loop in linewrap_general() resulting from safe_chr()
    being a macro instead of a function.
 -- Fixed subtle $-command exclusion (Issue 193).
 -- Fixed @color interactions with @name and @moniker (Issue 194).
 -- Fixed v() references in 'help substitutions3' (Issue 195).
 -- @clist/full column alignment with six-digit dbrefs (Issue 196).
 -- @mail index listing alignment with @moniker (Issue 197).
 -- Added local.cpp hook to affect INFO and populate Patches: line
    with other compile-time switches besides WOD_REALMS (Issue 51).
 -- Fix unlikely memory leak if executor of a queue task happens to be
    a bad object by the time the queued entry is executed.
 -- Prevent @ccreate from creating channels with duplicate names (Issue
    206).
 -- Wizhelp SUSPECT should describe that all commands from SUSPECT-set
    players are logged as controlled by the 'log' configuration option
    (Issue 199).
 -- @moniker without any argument gave 'I don't see that here.'
    followed by 'Permission denied.' (Issue 40).
 -- Update PATCHES file (Issue 189).
 -- RxLevel and TxLevel were reversed in @examine leading to much
    confusion in using reality levels (Issue 62).
 -- Added separate recursion limit protection on nesting of iter() and
    list() (Issue 216). MAX_ITEXT is 100, but raising the function
    recursion limit above that leaves iter() and list() open to step
    on nearby mudstate structures including help and global_registers.
 -- Disable WHO in Firan build (Issue 218).
 -- Fixed crash due to failure to clear @program data after logout
    (Issue 217).  Found and fixed by Alierak.
 -- Disallow negative charge for channels (Issue 222).  Found by
    Alierak.
 -- Fixed cases of look and @idesc interaction (Issue 45).
 -- Updated 'wizhelp @attribute' for clarity (Issue 190).
 -- Removed 'Attr. Cache' row from @list hashstats report for
    memory-based build (Issue 226).
 -- page, say, @pemit, and pose with /noeval would strip curly braces
    (Issue 225).
 -- Version and error strings containing the label 'Win32' were used
    in Win64 builds of TinyMUX (Issue 228).
 -- Fixed potential lbuf leak in munge() (Issue 227).  Found and fixed
    by Alierak.
 -- Fixed lbuf leak when @hook attribute is empty (Issue 229).  Found
    and fixed by Alierak.
 -- Fixed build error in version.cpp (Issue 230).
 -- INFO should show 'Patches' or 'INFO 1', but not both (Issue 236).
 -- @dolist and @trig were not passing TRACE bit through (Issue 237).
 -- @verb/no_name used unterminated verb_sw table (Issued 243).
 -- Fix typo in do_say() which left a bit-wise instead of a logical
    AND operation (Issue 245).
 -- Fix trailing padding in center() (Issue 253).
 -- Fix buffer overflow in fun_ladd (Issue 282).
 -- Fixed memory leak in scheduler because of running out of memory.
 -- Fixed non-player object's ability to hold coins.
 -- Fixed loading of coins from flatfile (i.e., across @restart for
    memory-based) (Issue 224).
 -- Fix Firan build break in fun_trigger() (Issue 288).
 -- Fixed +glance softcode in SGP minimal database (Issue 291).
 -- Fix memory leak in @mail error code path.
 -- Fix memory leak in process_cmdent().
 -- HEIGHT() and WIDTH() returned least-idle port when given a port rather
    than the specified port.
 -- Fix doing header across @restart.
 -- Fix handle leak in comsys.db if initial parsing fails.
 -- Fix type-punning bug in mux_fpclass() that broke when compiled with
    gcc 4.1 or later with -O2 (which turns on -fstrict-aliasing) (Issue
    322).
 -- Properly terminate uses of mux_exec().  Most of these are protected by
    EV_TOP or something else.
 -- CLog::AppendLog() does not actually position log at end of existing
    log file. Net result is only that first two lines (Containing to
    INI/LOAD entries) are lost.
 -- Allow %=<name> to support single-letter attribute names and
    document. Issue 341.
 -- Fix WIDTH() to default to 78 instead of 24 (Issue 354).
 -- Open permissions on WIDTH() and HEIGHT() (Issue 356).
 -- hasflag() would not check for no_name (Issue 360).
 -- Fix the attribute flag names returned by lflags() (Issue 362).
 -- @set2 help topic does not mention case, trace, or no_name
    attribute flags (Issue 361).
 -- Fix LOG_DIR across @restarts (Issue 46).
 -- Drop dependency on QueryPerformanceCounter() (Issue 369).
 -- The flag_access configuration handler would SIGSEGV if a flagname
    was given without a list of permissions.
 -- The power_alias and flag_alias configuration handlers would
    SIGSEGV if flagname and alias were not both given.
 -- If guest_char was a THING instead of a PLAYER, copying the flagset
    of the guest_char wiped the object type (Issue 390).
 -- Fix buffer overflow with %=<> substitution (Issue 406).
 -- Fix comma handling in SGP places code for join, ojoin, depart, and
    odepart.
 -- grepi() failed to find patterns composed of both upper-case and
    lower-case versions of the same letter (Issue 425).
 -- @notify/quiet behaved like @notify/all (Issue 426).  Reported by
    Barton.
 -- Improve ValidateConfigurationDbrefs() to prevent
    player_starting_room and similar dbref configuration options from
    refering to NOTHING (Issue 441).
 -- Fix escape() to adding leading backslash when string starts with
    color (Issue 453).
 -- Fix merge() to be ANSI-aware.
 -- Fix translate(%xua%xn%xyb,p) --> '%xua%xu%xyb' (Issue 461).
 -- Fix interaction between @notify and @destroy that left non-default
    semaphores blocked on garbage object (Issue 435).
 -- Add page-colon-space case (e.g., page p1=: 's clock ticks.').
 -- Help did not match behavior of mail(<player>, <number>) (Issue 477).
 -- Buffer footer corruption and SIGSEGV with columns() (Issue 501).
 -- Exits could be teleported to JUMP_OK locations (Issue 518)
 -- Fix Visual C++ 2008 Express Edition build error (Issue 509)
 -- Test MEMALLOC() return value in mguests.cpp (Issue 505).
 -- @toad wasn't deleting the right name from an internal table.
 -- Leading Ctrl-A in attribute was converted to '?' during 2.7
    flatfile conversion.
 -- Set MYSQL_OPT_RECONNECT and MYSQL_SET_CHARSET_NAME MySQL options.
 -- Fix mid() with negative length (Issue 539).
 -- Fix padding in SHA1_Final() for data 9 bytes shorter than a
    multiple of 64 (Issue 544).
 -- Don't strip MSG_SAYPOSE or MSG_OOC when forwarding messages to
    contents, exits, etc.
 -- Option table was defined one element too large.
 -- Use CXXFLAGS instead of CFLAGS.
 -- Should be starting_pay instead of paystart and find_money_chance
    instead of payfind (Issue #589).
 -- Fix @dolist help topic (Issue 593).
 -- Change reference to no_program which should be no_command.
 -- Topic reference should be to 'regexp syntax'.
 -- Fix typo in substitutions3 (Issue 605).
 -- Fix typo on help @lock compound (Issue 606).
 -- Clarify use of see_all @power (Issue 584).
 -- Fix one case of #elif without a condition.
 -- Add missing attributes to muxattrs.dat.
 -- Fix @dbclean to not strip attribute owner and flags on attributes
    that it re-numbers (Issue 621).
 -- Fix access of uninitialized memory during dbconvert when @queuemax
    is set on player object (Issue 623).


Performance Enhancements:
~~~~~~~~~~~~~~~~~~~~~~~~

 -- In MEMORY_BASED, avoid malloc() call each time an attribute is
    added to an object.
 -- Optimize atr_add_raw_LEN() to reduce Firan load time from 40 seconds
    to 15 seconds (which includes firan.db, mail.db, and comsys.db).
    This translates to something upward of 28 MB/s.
 -- Optimize do_comsystem() ability to recognize what is not an alias.
    Alierak.
 -- Added reference counting to global registers which should improve
    performance and greatly reduce memory usage for games which use the
    queue heavily.
 -- Issue 207: Maintain message length in mail bag to avoid touching
    mail body.
 -- Issue 201: Trim priority queue data structures during @dbck to save
    memory.
 -- Re-arrange parse_boolexp() to perform simple work first.


Cosmetic Changes:
~~~~~~~~~~~~~~~~
 -- Increased width of certain columns in @list hashstats (Requests,
    Hits, and Checks) and @list allocations (Allocs).
 -- Fix spelling errors in readme files and respace.
 -- Remove unused configuration option, use_http.
 -- Flag letter 'z' should be OPEN_OK.
 -- The examples for WIDTH() and HEIGHT() are for 'say' instead of 'think'.
 -- Fix typo in orflags() topic (Issue 504).


Miscellaneous:
~~~~~~~~~~~~~
 -- Add mux_fopen() utility function to replace direct use of fopen().
 -- Updated config.guess, config.sub, and configure to later versions.
 -- Updated to autoconf 2.61.
 -- Refer to tinymux.org instead of tinymux.com.
 -- Added SQL readme (Issue 47).
 -- Updated to doxygen 1.5.1.
 -- Freshened ATTACK, BACKUPS, BETA, CREDITS, NOTES, README, and
    readme.txt.
 -- Documented Lbufref and Regref pools in 'wizhelp @list alloc'.
 -- Increase MAX_ALIASES_PER_PLAYER from 50 to 100.
 -- Fix gcc constant string warnings.
 -- Remove unfinished sqlshared.cpp, sqlshare.h, and sqlslave.cpp.
 -- Switch to using Visual Studio 2003 and Intel Compiler v10.1.
 -- Firan is now using 24000-byte buffers.
 -- Increase Debian debhelper compat level.
 -- Build updates for Intel Compiler v11.1.