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Comparing deliantra/server/Changes (file contents):
Revision 1.477 by root, Mon Nov 2 11:50:20 2009 UTC vs.
Revision 1.643 by root, Thu Apr 15 03:34:29 2010 UTC

1Deliantra MORPG Server, Maps and Archetypes ChangeLog. 1Deliantra MORPG Server, Maps and Archetypes ChangeLog.
2
2Version numbers sort like decimal numbers. 3Version numbers sort like decimal numbers.
3 4
4TODO: warrior_1 looks broken 52010-04-07 23:58:02.2729 [ABT] BUG: hitter ({cnt:4994384,uuid:<1.7f744a072>,name:"icestorm",flags:[8,11],type:102}(on /gotischerbereich/mlabspiraltower/std5@0+6)) with no relation to target ({cnt:4984688,uuid:<1.7f742acea>,name:"Dread",flags:[0,8,11,14,21,52,103,104],type:0}(on /gotischerbereich/mlabspiraltower/stc5@15+5)) at /opt/deliantra-server/share/deliantra-server/cf.pm line 3951
5TODO: apartment-descritpions for gotisch1/2 62010-04-07 23:58:02.2729+ eval {...} called at /opt/deliantra-server/share/deliantra-server/cf.pm line 3951
72010-04-07 23:58:02.2729+ cf::tick() called at /opt/deliantra-server/share/deliantra-server/cf.pm line 3519
82010-04-07 23:58:02.2729+ cf::main_loop() called at /opt/deliantra-server/share/deliantra-server/cf.pm line 3579
92010-04-07 23:58:02.2729+ cf::main() called at -e line 0
102010-04-07 23:58:02.2729+
112010-04-07 23:58:02.2729 [ABT] --- C backtrace follows ---
122010-04-07 23:58:02.2729 [ABT] [log_backtrace(char const*)] /root/src/cf.schmorp.de/server/server/./cfperl.xs:1259
132010-04-07 23:58:02.2730 [ABT] [LOG(int, char const*, ...)] /root/src/cf.schmorp.de/server/common/logger.C:209
142010-04-07 23:58:02.2730 [ABT] [get_attack_mode] /root/src/cf.schmorp.de/server/server/attack.C:678
152010-04-07 23:58:02.2730 [ABT] [hit_player(object*, int, object*, unsigned int, int)] /root/src/cf.schmorp.de/server/server/attack.C:1447
162010-04-07 23:58:02.2730 [ABT] [hit_map(object*, int, unsigned int, int)] /root/src/cf.schmorp.de/server/server/attack.C:348
172010-04-07 23:58:02.2730 [ABT] [move_cone(object*)] /root/src/cf.schmorp.de/server/server/spell_attack.C:2066
182010-04-07 23:58:02.2730 [ABT] [process_object(object*)] /root/src/cf.schmorp.de/server/server/time.C:1356
192010-04-07 23:58:02.2731 [ABT] [process_events] /root/src/cf.schmorp.de/server/server/main.C:275
202010-04-07 23:58:02.2731 [ABT] [server_tick()] /root/src/cf.schmorp.de/server/server/main.C:405
212010-04-07 23:58:02.2731 [ABT] [XS_cf_server_tick] /root/src/cf.schmorp.de/server/server/./cfperl.xs:1641
222010-04-07 23:58:02.2731 [ABT] [Perl_pp_entersub] /root/cvt/perl/perl-5.10.0/pp_hot.c:2851
232010-04-07 23:58:02.2731 [ABT] [Perl_runops_standard] /root/cvt/perl/perl-5.10.0/run.c:38
242010-04-07 23:58:02.2731 [ABT] [Perl_call_sv] /root/cvt/perl/perl-5.10.0/perl.c:2632
252010-04-07 23:58:02.2731 [ABT] [cfperl_tick()] /root/src/cf.schmorp.de/server/server/./cfperl.xs:1052
262010-04-07 23:58:02.2731 [ABT] [??] ??:0
272010-04-07 23:58:02.2732 [ABT] [??] ??:0
282010-04-07 23:58:02.2732 [ABT] [??] ??:0
292010-04-07 23:58:02.2732 [ABT] [Perl_pp_entersub] /root/cvt/perl/perl-5.10.0/pp_hot.c:2851
302010-04-07 23:58:02.2732 [ABT] [Perl_runops_standard] /root/cvt/perl/perl-5.10.0/run.c:38
312010-04-07 23:58:02.2732 [ABT] [Perl_call_sv] /root/cvt/perl/perl-5.10.0/perl.c:2632
322010-04-07 23:58:02.2732 [ABT] [main] /root/src/cf.schmorp.de/server/server/main.C:428
33
6TODO: it is possible to inventory-lock items on the floor, and *spomehow* possible to drop them. 34TODO: it is possible to inventory-lock items on the floor, and *spomehow* possible to drop them.
7TODO: think about naking the rhyzian amulet useful - makes little sense in deliantra? 35TODO: think about naking the rhyzian amulet useful - makes little sense in deliantra?
36
37TODO: 2009-11-29 12:48:48.3974 /opt/crossfire/share/crossfire/treasures:5729, "arch stonebig_club": treasure references unknown archetype
38TODO: 2009-11-09 02:36:57.7199 unable to resolve postponed arch reference to 'Hanuk'
39TODO: summon cult does not properly create multipart monsters?
402010-01-16 20:39:27.1222 BUG: process_events(): Object {cnt:2127760,uuid:<1.7241a5bd1>,name:"throwing dagger",flags:[17,24],type:48}(on /brest/ludo2@8+2) has no speed (-0.033333), but is on active list
41
42TODO: removing a single map tag from one map kills the tag on other maps as well, apparently
43
44TODO: golem survives "longer" now - too long?
45TODO: common/readable generates archetype names in books: "A mushroom_1 of Antitoxin is a rare item..."
46TODO: clean up skill handling in kill_object.
47TODO: make the "feed all faces" flag persistent between logins.
48TODO: mining experience
49 - (maps) the mana fountain now has a ratelimit of 30 potions per hour.
50 - (maps) added (navar) gravedigger, that buys players gravestones.
51 - (maps) added the rathouse quest for the shockwave spell in navar
52 (by Dustfinger).
53 - (maps) Fixed bad floor tile in navar apartment.
54 - made (wizard) look_at show also uuids.
55 - added cf::object::find_object_uuid (::find_object already exists!).
56 - (maps) added new apartment, made by LinuxLemoner.
57 - (maps) added quest for the mining skill scroll to valleynoy.
58 - (arch) added sounds: zombie death, book reading, inscription.
59 - (arch) made the hill giants loose more body parts.
60 - (arch, maps) added black unicorn horn, required to access mlab hell.
61 - (arch) increased the (possible) number of arrows/bolts found in shops
62 and made them a bit more expensive.
63 - (maps) add more glory hole treasure styles.
64 - do not update the floorbox while running, to avoid big item
65 updates that cost network bandwidth and processing power.
66 - diseases could reduce a monsters speed to MIN_ACTIVE_SPEED, which
67 caused overflows causing monsters to become living deads.
68 - unapply weapons and armour before trying to improve it.
69 - teach the random map generator the ability to read ".rmg" files
70 that specify which actual style map to generate, and use it for
71 the default decorstyle to avoid inappropriate maps to be used.
72 - support (with some limitations) multiple different skills with the
73 same subtype.
74 - show invisible no longer makes magic mouths visible.
75 - move_type changes (spells, skills etc.) now will correctly
76 take move_on/move_off into account (e.g. buttons).
77 - display (exit) or (random map) in client for those objects.
78 - removed (useless) spell damage columns from spell info and replace
79 it by effective casting level - clients > 2.10 required to display
80 properly.
81 - building of levers/doors works again for all kinds of floors.
82 - the player can now withdraw and deposit all the available money.
83 - (maps) fix the apartment shop (japan => 吾妻) and add descriptions for
84 steinwandstadt/celvear.
85 - (maps) added /goodies map (goto *idkfa) with stuff useful for testing.
86 - improve editor support protoocl slightly, provide workarounds for 2.10
87 clients.
88 - tcp.ext didn't unbind in reloads.
89 - map-tags.ext didn't properly close the database on reloads.
90 - cfutil skips .-directories when scanning.
91 - build.ext prevents players from building on other player's maps.
92 - rent.ext allows the dm to enter anytime.
93 - NPC_Dialogue adds a new predefined variable, $map.
94 - new "build" event hook.
95 - get rid of archetype min/max values except max_x (which should go, too).
96 - added fix_generated_item and cf::object::generate to XS interface.
97 - no longer use uppercase identifiers for saving anywhere, but support
98 them on loading, for old playerfiles and maps.
99 - removed is_legal_2ways_exit - this is apparently dead code, and
100 would be handled differently nowadays anyway.
101 - random map .meta were not being expired at all.
102 - replace move_ob/move_object functiony by the equivalent move method.
103 - update to automake 1.10.
104 - invitation to maps with unagressive and friendly monsters doesn't
105 require level 4 anymore.
106 - do not let update_stats muck with the chosen_skill anymore.
107 - monsters now rotate through all skills (in chosen_skill).
108 - fix lots of path-related buffer overflows in the random map generator.
109 - added detect mineral vein spell.
110 - support "wall overlays" in the random map generator - not very generic,
111 used by minable veins.
112 - (maps) relocated jeweler town to another directoy.
113 - (arch) implement mining pickaxes and mining skill.
114 - generate most constants for perl automatically.
115 - properly check for weapon name prefix ("Ragnarok's sword").
116 - when player dies, restore his food to at least 200.
117 - support multiple inheritance for arch sources (inherit a,b,c).
118 - switch to storable-n-format for facedata, for better interoperability.
119 - implement generic "ranged" item framework (pickaxe, fishing rod).
120 - the singing skill actually respects the direction now.
121 - oratory and singing now require a direction.
122 - use_skill now requires that you can actually apply the skill tool.
123 - do not invoke perl on every user command anymore by providing
124 a comamnd and an unknown_command event.
125 - move mark, run, run_stop, fire and fire_stop commands back from
126 perl to C++, for speed reasons (basically undo patchset 1304).
127 - add a client_destroy event, so we don't have to hook the
128 attachable destroy event (which is called much more often).
129 - removed (unused) FLOOR object type.
130 - fix errornous change_abil messages for rods (and other types).
131 - remove include/commands.h and server/c_new.C, and refactor
132 all into server/commands.C.
133 - save and restore combat/ranged/current slot for players.
134 - the server now batches item's face/fx commands, as opposed
135 to sending one fx per item - helps mostly at connect and
136 with floorbox updates.
137 - implemented ext::player_env::play_music_once $who->contr, "km/...".
138 - the random map generator now supports selecting difficult for
139 more style categories than just monsters (all except fountains
140 apparently).
141 - object serialiser no longer creates empty "owner" references.
142 - make sure failed castings take some time, too, to avoid being
143 smitten by your god.
144 - many more failmsgs and help texts.
145 - support log suspension/resumption, e.g. for defragmenting.
146 - stop thrown objects when their speed goes too low.
147 - log the number of unique logins seen every minute in a compact
148 format (for statistics).
149 - do not send delitem for players.
150 - support static scalar data members properly in genacc now.
151 - implement "simple" freelist management for objects.
152 - recycle object counts now - to support longer uptimes.
153 - got rid of the dreaded write_parameters_to_string (666 chars omitted)
154 function (and yes, 666 is exact!).
155 - random map generator results should now be fully repeatable.
156 - fixed possible crash bug in build code.
157 - rename find_marked_object to ->mark and speed up.
158 - player movers properly destroy themselves when used up, instead
159 of leaking.
160 - do not show msg for unidentified objects that need identification.
161 - convert formulae file parser to thawer framework.
162
1632.93 Sat Feb 13 15:52:36 CET 2010
164 - (maps) fix travel to valdor and back.
165 - do no longer by default eval map cod ein safe compartments
166 (this can be re-enabled using the safe_eval config option).
167 - (maps) fix an apparent crash bug caused by broken generstors
168 in lorak.
169 - fix data corruption issues caused by recursive calls to
170 unordered_mapwalk - now every caller must provide its own
171 buffer.
172 - (maps) improve tindervale maps slightly.
173 - (arch) considerably decrease slag ex price.
174 - (arch) fix filth archetype.
175 - extension dependency resolve was completely broken.
176 - multipart objects would cause save_throw_object to crash - it
177 now acts on the head only.
178 - do not try to connect to an irc server unless explicitly configured.
179 - do not expect decltype() to be available in gcc 4.4.
180 - extended the safe perl environment by loops.
181 - (arch) fix "armless cook" facings.
182 - the "experience table" resource item did not have a proper
183 hash associated with it, so updates could not be detected.
184 - fixed poison traps in doors.
185 - player->killer_name did not properly flag the name as unicode.
186 - aggressively mark many more methods as utf8 or octet-expecting,
187 and provide a non-destructive SvPVutf8 variant.
188 - do not allow dragon players to change their title via the settings.
189 - ratelimited jeweler skill nugget conversion.
190 - under high load, the server stopped swapping out to make
191 the server more responsive, but making it impossible to reduce
192 the load by... swapping out. slot queuing will now always make
193 some progress.
194 - improve the quality of the load-avg calculation.
195 - (maps) fixed quest npc in jeweler dungeon quest.
196 - don't fail to write the runtime file if the temporary already exists.
197 - ipo.ext no longer uses (synchronous) CFDB, stores mail directly at
198 player now.
199 - rewrote hiscore code from scratch to use async I/O, store uuid and
200 timestamp and use a tab in the client to increase awareness.
201 - npc dialog setflag/setsatte now check for defined'ness, so
202 setflag 0 is possible.
203 - make install now deletes old extensions, to ease upgrades in the
204 deliantra vm.
205
2062.92 Thu Dec 24 04:51:56 CET 2009
207 - the destruction spell could/would corrupt server memory quite often.
208 - logging in only fixed the combat slot when the palyer was loaded from
209 disk, not when it already was in memory.
210 - cede in wait_for_tick* when the tivck is inhibited hopefully
211 avoiding livelock during high-load emergency saves.
212 - logging in did not properly unapply all skills.
213 - (maps) make the invite quest marking much more obvious.
214 - (arch) fix warrior archetype names.
215 - map prefetching never prefetch upwards.
216 - wizpass no longer makes you non-blocking.
217 - (maps) add light to some of the special maps, add troll
218 map.
219
2202.91 Mon Nov 30 10:18:09 CET 2009
221 - (maps) add gorokh_final mapset from crossfire.
222 - (maps) block most vault-type mlab locations, open up
223 imperial converters for anybody to use.
224 - (maps, arch) replace all permanent stat potions by random
225 variants.
226 - (maps) spread gorokh demon styles more evenly over 1..100.
227 - TRIGGER events got passed a garbage pointer instead of a
228 real player object on player changes.
229 - diseases and maybe other things could sometimes reduce the speed
230 to below MIN_ACTIVE_SPEED, deactivating the monster and causing
231 much grief.
232 - speed_left randomisation was, apparently, totally broken.
233 - introduce FLAG_RANDOM_SPEED instead of using the sign bit
234 of the speed slot internally and in map save files. among other
235 things, this gets rid of all the abs (speed) calls.
236 - reduce map file save files by using abridged keywords aliases.
237 - shop specialisation calculation was totally broken.
238 - nrof/itemcount/volume limits when dropping to the floor are
239 now enforced.
240 - fix magic mapping, which only worked for inate spell casting.
241 - godgiven items will now be explicitly described as such.
242 - (arch) dded a quiver of bolts.
243 - materialnames would change "randomly" on every load, only
244 set the material when the materialname was not set before.
245 - balancing change, halve rod recharge speed (instead
246 of 4.8s, the standard rods now recharge in ~10s. not a solution,
247 but still.
248 - reduce cpu time used for map saving by >>50% by avoiding
249 the costly flag-checking loop in most cases and using a simple
250 repeat-cache for speed_left.
251 - always delay stats update for players on insert/remove till
252 next tick/command, which saves a lot of cpu cycles on drop/take.
253 - add hint about havign to run to attach unaggressive npcs.
254 - pet monster level was not displayed correctly in "showpets index".
255 - clean up floating point conversions and many similar nitpicks.
256 - fix hanuk altar.
257 - overhaul material system to be much faster, and having less bugs, but
258 still having a lot of cruft :/.
259 - add marble shop floor.
260 - move gcc specifics to new file include/compiler.h.
261 - unrecognised cfpod directives could cause undefined behaviour.
262 - added boes' marble shop to steinwandstadt.
263 - pad mapspace to power-of two size for speed/codesize/cache gains.
264 - optimise mapspace updates.
265 - cache volume/items per mapspace.
266 - use fabs, min and max consistently (surprisingly for a code size
267 decrease).
268 - fixed a small uncleanlieness in item converters, which might
269 have led to weird item multiplications.
270 - store hash value in shstr, not used by anything, but doesn't use much memory.
271 - fixed crash bug in learn_spell command.
272 - enhanced output of the mapinfo command.
273 - remove all traces of FLAG_NO_FIX_PLAYER.
274 - avoid sv_derived_from calls (lots of hash lookups) when converting
275 from perl to c++.
276 - implemented least_significand_bit and for_all_bits_sparse_32 utilities
277 and use it in some "inner" loops.
278 - rename flags to attachable_flags to avoid confusion :=).
279 - fixed jeweler experience output to not be floating point.
280 - added lock/unlock commands, thanks for the patch go to Shawn Robinson!
281 - (arch, maps) introduce inactive_shop_floor and fix some shops with it.
282 - try to prefetch memory inside process_objects, which can give
283 enourmous speed gains.
284 - make some small optimisation to the process_objects loop.
285 - move facedata chksum calculation into cfutil, make server more flexible
286 handling different chksum lengths.
287 - check for hash collisions in cfutil.
288 - reduce face checksum size from 6 to 4 bytes.
289 - don't crash when a map uses empty sound/sound_destroy/face.
290 - removed weather-specific attributes.
291 - fixed genkeywords dependency.
292 - do not clear "randomitems" slot for world underlays.
293 - use "sl" as short-hand for speed_left in save-files, just to make them
294 smaller.
295 - in general, don't crash on value-less resource file lines
296 anymore, due to get_str never returning a 0-pointer.
297 - code cleanup in move_symptom.
298 - removed arch_to_object (replaced it by ->instance ()).
299
3002.90 Sat Nov 7 15:06:06 CET 2009
301 - some Andrew Madloch wanted, despite being specifically told
302 multiple times that the Deliantra parts additions are under AGPL,
303 lock up the source code of the server within his company.
304 some reorganisations have been done to the sourcecode to make
305 it clearer that this violates the Affero GPL. Help to keep
306 Deliantra free software even for the coming generations
307 and be wary of the promises of Andrew Madloch, he has nothing
308 good in mind for free software.
309 - clarify which files of the server are 100% AGPL.
310 - minor reorganisation, move some GPL code into other files.
311 - implement viewpoint (which is like observe, but only for the map,
312 not stats etc.).
313 - replace magic mapping overlay by a flying bird exposing area
314 on the worldmap (ext/magic_mapping.ext).
315 - @find in npc dialog was useless as the vairbale wasn't accessible.
316 - @find results in npc dialogue is now stored in $find.
8 - (maps) add lostwages and lorak (valdor/varsia) from cfextended. 317 - (maps) add lostwages and lorak (valdor/varsia) from cfextended.
9 - (maps, server) add lostwages and celvear apartments to rent system. 318 - (maps, server) add lostwages and celvear apartments to rent system.
10 - (maps) closed guild houses, this is not scalable, ask your friendly 319 - (maps) closed guild houses, this is not scalable, ask your friendly
11 dm instead. 320 dm instead.
12 - (maps) add town portal to celvear. 321 - (maps) add town portal to celvear.
19 casino tokens and stock certificates are also missing. 328 casino tokens and stock certificates are also missing.
20 - (maps, arch) add a number of minor maps from crossfire to scorn, navar 329 - (maps, arch) add a number of minor maps from crossfire to scorn, navar
21 and santo dominion. 330 and santo dominion.
22 - (maps, arch) added gotischerbereich from cfextended, and some archetypes 331 - (maps, arch) added gotischerbereich from cfextended, and some archetypes
23 to go with them. also adjusted archetypes to be more korrekt "gotisch". 332 to go with them. also adjusted archetypes to be more korrekt "gotisch".
333 - doors/containers can now use "match ..." expressions for the slaying field.
24 - properly close client-side dialogue when the player is teleported away. 334 - properly close client-side dialogue when the player is teleported away.
25 - map-tags did not properly close it's database tables or wait 335 - map-tags did not properly close it's database tables or wait
26 for a quiescent state, causing memory corruption on reload. 336 for a quiescent state, causing memory corruption on reload.
27 - support "stat.xyz" accessor in match expressions. 337 - support "stat.xyz" accessor in match expressions.
28 - skip /styles and /editor directories in cf::map::static_maps. 338 - skip /styles and /editor directories in cf::map::static_maps.
33 and to not add a "put your code here" force needlessly. 343 and to not add a "put your code here" force needlessly.
34 - (arch) fix or improve many plurals. 344 - (arch) fix or improve many plurals.
35 - markers do no longer add a force if the slaying field is unset. 345 - markers do no longer add a force if the slaying field is unset.
36 - sped up search-items implementation, but it's still horrible. 346 - sped up search-items implementation, but it's still horrible.
37 - (maps) bigchests are now properly non-unique, per_player and no_reset. 347 - (maps) bigchests are now properly non-unique, per_player and no_reset.
38 - editor_folder can now be used to override whatever cfutil sets. 348 - editor_folder can now be used to override whatever cfutil sets, and was
349 used to reogianise the illogical arch tree a bit.
350 - (maps) import most map names from crossfire.
351 - nuke image_sums/image_info subcommands from the protocol.
352 - fly_high movement gives better los, ignoring blocksview.
353 - the addexp command should now honour skill names with spaces.
354 - (arch) add nuke from cfextended to avoid a crash.
355 - (arch) added many more buildable marble floors.
356 - major namespace cleanup: save 45kb by making functions static
357 that were unnecessarily global.
39 358
402.82 Sat Oct 24 03:50:17 CEST 2009 3592.82 Sat Oct 24 03:50:17 CEST 2009
41 - fixed a classical and exploitable stack buffer overflow in the gsay command. 360 - fixed a classical and exploitable stack buffer overflow in the gsay command.
42 - fix a memory buffer overflow in the book code. 361 - fix a memory buffer overflow in the book code.
43 - add @check, @find npc dialogue commands. 362 - add @check, @find npc dialogue commands.
512 - bugfix: when unapplying skills also remove them from the range/combat slots. 831 - bugfix: when unapplying skills also remove them from the range/combat slots.
513 - bugfix: do not merge items whose archetype name merges, use the 832 - bugfix: do not merge items whose archetype name merges, use the
514 archetype *archname* (chairs of different facings were merged). 833 archetype *archname* (chairs of different facings were merged).
515 - bugfix: fix a potential crash issue in find_object_name (not used 834 - bugfix: fix a potential crash issue in find_object_name (not used
516 normally). 835 normally).
517 - bugfix: locked doors cnanot be bashed down by magical means 836 - bugfix: locked doors cannot be bashed down by magical means
518 (destruction, magic missile etc.). 837 (destruction, magic missile etc.).
519 - swarm spells without a direction now use various spiral patterns 838 - swarm spells without a direction now use various spiral patterns
520 instead of being fully random. 839 instead of being fully random.
521 - update AnyEvent API to 3.4 and above. 840 - update AnyEvent API to 3.4 and above.
522 841
601 - merge items with different arch pointers refering to the same arch 920 - merge items with different arch pointers refering to the same arch
602 (due to archetype reloads). 921 (due to archetype reloads).
603 - refactored the object remove/insert functions and most related 922 - refactored the object remove/insert functions and most related
604 functions (decrease, split, merge_ob etc.). 923 functions (decrease, split, merge_ob etc.).
605 - make it compile better on freebsd (reported by pippijn). 924 - make it compile better on freebsd (reported by pippijn).
606 - remove GT_UPDATE_INV (no longer applicable). 925 - removed GT_UPDATE_INV (no longer applicable).
607 - fix the longstanding "container stays open" bug. 926 - fix the longstanding "container stays open" bug.
608 - improved floorbox updating to be incremental and other protocol 927 - improved floorbox updating to be incremental and other protocol
609 optimisations. 928 optimisations.
610 - get rid of update_after_inventory_change and only do update stats 929 - get rid of update_after_inventory_change and only do update stats
611 for weight once/tick/player at max. 930 for weight once/tick/player at max.
893 - introduced new keyword for map files: file_format_version (integer, server version: 0) 1212 - introduced new keyword for map files: file_format_version (integer, server version: 0)
894 - better message for apply failures due to applymode 1213 - better message for apply failures due to applymode
895 - removed most all of the weather code 1214 - removed most all of the weather code
896 - unified logging to stderr and file 1215 - unified logging to stderr and file
897 - too many minor changes to document 1216 - too many minor changes to document
1217

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