[ViewVC] Annotation of: cvs/JSON-XS/Changes

Revision history for Perl extension JSON::XS

        - remove the experimental status of the incremental parser interface.
        - move =encoding around again, to avoid bugs with search.cpan.org.
          when can we finally have utf-8 in pod???

2.2  Wed Apr 16 20:37:25 CEST 2008
        - lifted the log2 rounding restriction of max_depth and max_size.
        - make booleans mutable by creating a copy instead of handing out
          the same scalar (reported by pasha sadri).
        - added support for incremental json parsing (still EXPERIMENTAL).
        - implemented and added a json_xs command line utility that can convert
          from/to a number of serialisation formats - tell me if you need more.
        - implement allow_unknown/get_allow_unknown methods.
        - fixed documentation of max_depth w.r.t. higher and equal.
        - moved down =encoding directive a bit, too much breaks if it's the first
          pod directive :/.
        - removed documentation section on other modules, it became somewhat
          outdated and is nowadays mostly of historical interest.

2.1  Wed Mar 19 23:23:18 CET 2008
        - update documentation here and there: add a large section
          about utf8/latin1/ascii flags, add a security consideration
          and extend and clarify the JSON and YAML section.
        - medium speed enhancements when encoding/decoding non-ascii chars.
        - minor speedup in number encoding case.
        - extend and clarify the section on incompatibilities
          between YAML and JSON.
        - switch to static inline from just inline when using gcc.
        - add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
        - fix some issues with UV to JSON conversion of unknown impact.
        - published the yahoo locals search result used in benchmarks as the
          original url changes so comparison is impossible.

2.01 Wed Dec  5 11:40:28 CET 2007
        - INCOMPATIBLE API CHANGE: to_json and from_json have been
          renamed to encode_json/decode_json for JSON.pm compatibility.
          The old functions croak and might be replaced by JSON.pm
          comaptible versions in some later release.

2.0  Tue Dec  4 11:30:46 CET 2007
        - this is supposed to be the first version of JSON::XS
          compatible with version 2.0+ of the JSON module.
          Using the JSON module as frontend to JSON::XS should be
          as fast as using JSON::XS directly, so consider using it
          instead.
        - added get_* methods for all "simple" options.
        - make JSON::XS subclassable.

1.53 Tue Nov 13 23:58:33 CET 2007
        - minor doc clarifications.
        - fixed many doc typos (patch by Thomas L. Shinnick).

1.52 Mon Oct 15 03:22:06 CEST 2007
        - remove =encoding pod directive again, it confuses too many pod
          parsers :/.

1.51 Sat Oct 13 03:55:56 CEST 2007
        - encode empty arrays/hashes in a compact way when pretty is enabled.
        - apparently JSON::XS was used to find some bugs in the
          JSON_checker testsuite, so add (the corrected) JSON_checker tests to
          the testsuite.
        - quite a bit of doc updates/extension.
        - require 5.8.2, as this seems to be the first unicode-stable version.

1.5  Tue Aug 28 04:05:38 CEST 2007
        - add support for tied hashes, based on ideas and testcase by
          Marcus Holland-Moritz.
        - implemented relaxed parsing mode where some extensions are being
          accepted. generation is still JSON-only.

1.44 Wed Aug 22 01:02:44 CEST 2007
        - very experimental process-emulation support, slowing everything down.
          the horribly broken perl threads are still not supported - YMMV.

1.43 Thu Jul 26 13:26:37 CEST 2007
        - convert big json numbers exclusively consisting of digits to NV
          only when there is no loss of precision, otherwise to string.

1.42 Tue Jul 24 00:51:18 CEST 2007
        - fix a crash caused by not handling missing array elements
          (report and testcase by Jay Kuri).

1.41 Tue Jul 10 18:21:44 CEST 2007
        - fix compilation with NDEBUG (assert side-effect),
          affects convert_blessed only.
        - fix a bug in decode filters calling ENTER; SAVETMPS;
          one time too often.
        - catch a typical error in TO_JSON methods.
        - antique-ised XS.xs again to work with outdated
          C compilers (windows...).

1.4  Mon Jul  2 10:06:30 CEST 2007
        - add convert_blessed setting.
        - encode did not catch all blessed objects, encoding their
          contents in most cases. This has been fixed by introducing
          the allow_blessed setting.
        - added filter_json_object and filter_json_single_key_object
          settings that specify a callback to be called when
          all/specific json objects are encountered.
        - assume that most object keys are simple ascii words and
          optimise this case, penalising the general case. This can
          speed up decoding by 30% in typical cases and gives
          a smaller and faster perl hash.
        - implemented simpleminded, optional resource size checking
          in decode_json.
        - remove objToJson/jsonToObj aliases, as the next version
          of JSON will not have them either.
        - bit the bullet and converted the very simple json object
          into a more complex one.
        - work around a bug where perl wrongly claims an integer
          is not an integer.
        - unbundle JSON::XS::Boolean into own pm file so Storable
          and similar modules can resolve the overloading when thawing.

1.3  Sun Jun 24 01:55:02 CEST 2007
        - make JSON::XS::true and false special overloaded objects
          and return those instead of 1 and 0 for those json atoms
          (JSON::PP compatibility is NOT achieved yet).
        - add JSON::XS::is_bool predicate to test for those special
          values.
        - add a reference to
          http://jpsykes.com/47/practical-csrf-and-json-security.
        - removed require 5.8.8 again, it is just not very expert-friendly.
          Also try to be more compatible with slightly older versions,
          which are not recommended (because they are buggy).

1.24 Mon Jun 11 05:40:49 CEST 2007
        - added informative section on JSON-as-YAML.
        - get rid of some c99-isms again.
        - localise dec->cur in decode_str, speeding up
          string decoding considerably (>15% on my amd64 + gcc).
        - increased SHORT_STRING_LEN to 16kb: stack space is
          usually plenty, and this actually saves memory
          when !shrinking as short strings will fit perfectly.

1.23 Wed Jun  6 20:13:06 CEST 2007
        - greatly improved small integer encoding and decoding speed.
        - implement a number of µ-optimisations.
        - updated benchmarks.

1.22 Thu May 24 00:07:25 CEST 2007
        - require 5.8.8 explicitly as older perls do not seem to offer
          the required macros.
        - possibly made it compile on so-called C compilers by microsoft.

1.21 Wed May  9 18:40:32 CEST 2007
        - character offset reported for trailing garbage was random.

1.2  Wed May  9 18:35:01 CEST 2007
        - decode did not work with magical scalars (doh!).
        - added latin1 flag to produce JSON texts in the latin1 subset
          of unicode.
        - flag trailing garbage as error.
        - new decode_prefix method that returns the number
          of characters consumed by a decode.
        - max octets/char in perls UTF-X is actually 13, not 11,
          as pointed out by Glenn Linderman.
        - fixed typoe reported by YAMASHINA Hio.

1.11 Mon Apr  9 07:05:49 CEST 2007
        - properly 0-terminate sv's returned by encode to help
          C libraries that expect that 0 to be there.
        - partially "port" JSON from C to microsofts fucking broken
          pseudo-C. They should be burned to the ground for pissing
          on standards. And I should be stoned for even trying to
          support this filthy excuse for a c compiler.

1.1  Wed Apr  4 01:45:00 CEST 2007
        - clarify documentation (pointed out by Quinn Weaver).
        - decode_utf8 sometimes did not correctly flag errors,
          leading to segfaults.
        - further reduced default nesting depth to 512 due to the test
          failure by that anonymous "chris" whose e-mail address seems
          to be impossible to get. Tests on other freebsd systems indicate
          that this is likely a problem in his/her configuration and not this
          module.
        - renamed json => JSON in error messages.
        - corrected the character offset in some error messages.

1.01 Sat Mar 31 16:15:40 CEST 2007
        - do not segfault when from_json/decode gets passed
          a non-string object (reported by Florian Ragwitz).
          This has no effect on normal operation.

1.0  Thu Mar 29 04:43:34 CEST 2007
        - the long awaited (by me) 1.0 version.
        - add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
          true and false.
        - add some more notes to shrink, as suggested by Alex Efros.
        - improve testsuite.
        - halve the default nesting depth limit, to hopefully make it
          work on Freebsd (unfortunately, the cpan tester did not
          send me his report, so I cannot ask about the stack limit on fbsd).

0.8  Mon Mar 26 00:10:48 CEST 2007
        - fix a memleak when decoding hashes.
        - export jsonToBj and objToJson as aliases
          to to_json and from_json, to reduce incompatibilities
          between JSON/JSON::PC and JSON::XS. (experimental).
        - implement a maximum nesting depth for both en- and de-coding.
        - added a security considerations sections.

0.7  Sun Mar 25 01:46:30 CET 2007
        - code cleanup.
        - fix a memory overflow bug when indenting.
        - pretty-printing now up to 15% faster.
        - improve decoding speed of strings by
          up to 50% by specialcasing short strings.
        - further decoding speedups for strings using
          lots of \u escapes.
        - improve utf8 decoding speed for U+80 .. U+7FF.

0.5  Sat Mar 24 20:41:51 CET 2007
        - added the UTF-16 encoding example hinted at in previous
          versions.
        - minor documentation fixes.
        - fix a bug in and optimise canonicalising fastpath
          (reported by Craig Manley).
        - remove a subtest that breaks with bleadperl (reported
          by Andreas König).

0.31 Sat Mar 24 02:14:34 CET 2007
        - documentation updates.
        - do some casting to hopefully fix Andreas' problem.
        - nuke bogus json rpc stuff.

0.3  Fri Mar 23 19:33:21 CET 2007
        - remove spurious PApp::Util reference (John McNamara).
        - adapted lots of tests from other json modules
          (idea by Chris Carline).
        - documented mapping from json to perl and vice versa.
        - improved the documentation by adding more examples.
        - added short escaping forms, reducing the created
          json texts a bit.
        - added shrink flag.
        - when flag methods are called without enable argument
          they will by default enable their flag.
        - considerably improved string encoding speed (at least
          with gcc 4).
        - added a test that covers lots of different characters.
        - clarified some error messages.
        - error messages now use correct character offset
          with F_UTF8.
        - improve the "no bytes" and "no warnings" hacks in
          case the called functions do... stuff.
        - croak when encoding to ascii and an out-of-range
          (non-unicode) codepoint is encountered.

0.2  Fri Mar 23 00:23:34 CET 2007
        - the "could not sleep without debugging release".
          it should basically work now, with many bugs as
          no production tests have been run yet.
        - added more testcases.
        - the expected shitload of bugfixes.
        - handle utf8 flag correctly in decode.
        - fix segfault in decoder.
        - utf8n_to_uvuni sets retlen to -1, but retlen is an
          unsigned types (argh).
        - fix decoding of utf-8 strings.
        - improved error diagnostics.
        - fix decoding of 'null'.
        - fix parsing of empty array/hashes
        - silence warnings when we prepare the croak message.

0.1   Thu Mar 22 22:13:43 CET 2007
        - first release, very untested, basically just to claim
          the namespace.
 
0.01  Thu Mar 22 06:08:12 CET 2007
        - original version; cloned from Convert-Scalar

Revision:	1.112
Committed:	Sat May 24 21:55:43 2008 UTC (15 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.111:	+2 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension JSON::XS
2	root	1.2
3	root	1.112	- remove the experimental status of the incremental parser interface.
4	root	1.111	- move =encoding around again, to avoid bugs with search.cpan.org.
5			when can we finally have utf-8 in pod???
6
7	root	1.110	2.2 Wed Apr 16 20:37:25 CEST 2008
8	root	1.109	- lifted the log2 rounding restriction of max_depth and max_size.
9	root	1.107	- make booleans mutable by creating a copy instead of handing out
10			the same scalar (reported by pasha sadri).
11	root	1.105	- added support for incremental json parsing (still EXPERIMENTAL).
12	root	1.103	- implemented and added a json_xs command line utility that can convert
13			from/to a number of serialisation formats - tell me if you need more.
14	root	1.108	- implement allow_unknown/get_allow_unknown methods.
15	root	1.109	- fixed documentation of max_depth w.r.t. higher and equal.
16	root	1.112	- moved down =encoding directive a bit, too much breaks if it's the first
17	root	1.102	pod directive :/.
18	root	1.106	- removed documentation section on other modules, it became somewhat
19			outdated and is nowadays mostly of historical interest.
20	root	1.102
21	root	1.101	2.1 Wed Mar 19 23:23:18 CET 2008
22			- update documentation here and there: add a large section
23			about utf8/latin1/ascii flags, add a security consideration
24			and extend and clarify the JSON and YAML section.
25	root	1.98	- medium speed enhancements when encoding/decoding non-ascii chars.
26	root	1.100	- minor speedup in number encoding case.
27	root	1.92	- extend and clarify the section on incompatibilities
28			between YAML and JSON.
29	root	1.95	- switch to static inline from just inline when using gcc.
30	root	1.94	- add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
31	root	1.100	- fix some issues with UV to JSON conversion of unknown impact.
32	root	1.99	- published the yahoo locals search result used in benchmarks as the
33			original url changes so comparison is impossible.
34	root	1.92
35	root	1.91	2.01 Wed Dec 5 11:40:28 CET 2007
36			- INCOMPATIBLE API CHANGE: to_json and from_json have been
37			renamed to encode_json/decode_json for JSON.pm compatibility.
38			The old functions croak and might be replaced by JSON.pm
39			comaptible versions in some later release.
40
41	root	1.90	2.0 Tue Dec 4 11:30:46 CET 2007
42			- this is supposed to be the first version of JSON::XS
43			compatible with version 2.0+ of the JSON module.
44			Using the JSON module as frontend to JSON::XS should be
45			as fast as using JSON::XS directly, so consider using it
46			instead.
47	root	1.88	- added get_* methods for all "simple" options.
48	root	1.89	- make JSON::XS subclassable.
49	root	1.88
50	root	1.86	1.53 Tue Nov 13 23:58:33 CET 2007
51	root	1.85	- minor doc clarifications.
52			- fixed many doc typos (patch by Thomas L. Shinnick).
53
54	root	1.84	1.52 Mon Oct 15 03:22:06 CEST 2007
55	root	1.83	- remove =encoding pod directive again, it confuses too many pod
56			parsers :/.
57
58	root	1.82	1.51 Sat Oct 13 03:55:56 CEST 2007
59	root	1.81	- encode empty arrays/hashes in a compact way when pretty is enabled.
60	root	1.87	- apparently JSON::XS was used to find some bugs in the
61	root	1.80	JSON_checker testsuite, so add (the corrected) JSON_checker tests to
62			the testsuite.
63			- quite a bit of doc updates/extension.
64	root	1.79	- require 5.8.2, as this seems to be the first unicode-stable version.
65	root	1.78
66	root	1.77	1.5 Tue Aug 28 04:05:38 CEST 2007
67	root	1.74	- add support for tied hashes, based on ideas and testcase by
68			Marcus Holland-Moritz.
69	root	1.75	- implemented relaxed parsing mode where some extensions are being
70			accepted. generation is still JSON-only.
71	root	1.74
72			1.44 Wed Aug 22 01:02:44 CEST 2007
73	root	1.73	- very experimental process-emulation support, slowing everything down.
74			the horribly broken perl threads are still not supported - YMMV.
75
76	root	1.72	1.43 Thu Jul 26 13:26:37 CEST 2007
77			- convert big json numbers exclusively consisting of digits to NV
78			only when there is no loss of precision, otherwise to string.
79
80	root	1.71	1.42 Tue Jul 24 00:51:18 CEST 2007
81			- fix a crash caused by not handling missing array elements
82			(report and testcase by Jay Kuri).
83
84	root	1.70	1.41 Tue Jul 10 18:21:44 CEST 2007
85			- fix compilation with NDEBUG (assert side-effect),
86			affects convert_blessed only.
87	root	1.69	- fix a bug in decode filters calling ENTER; SAVETMPS;
88			one time too often.
89	root	1.70	- catch a typical error in TO_JSON methods.
90	root	1.69	- antique-ised XS.xs again to work with outdated
91			C compilers (windows...).
92
93	root	1.68	1.4 Mon Jul 2 10:06:30 CEST 2007
94	root	1.63	- add convert_blessed setting.
95	root	1.56	- encode did not catch all blessed objects, encoding their
96			contents in most cases. This has been fixed by introducing
97			the allow_blessed setting.
98	root	1.65	- added filter_json_object and filter_json_single_key_object
99			settings that specify a callback to be called when
100	root	1.67	all/specific json objects are encountered.
101	root	1.59	- assume that most object keys are simple ascii words and
102			optimise this case, penalising the general case. This can
103			speed up decoding by 30% in typical cases and gives
104			a smaller and faster perl hash.
105	root	1.58	- implemented simpleminded, optional resource size checking
106			in decode_json.
107	root	1.61	- remove objToJson/jsonToObj aliases, as the next version
108			of JSON will not have them either.
109	root	1.62	- bit the bullet and converted the very simple json object
110			into a more complex one.
111	root	1.64	- work around a bug where perl wrongly claims an integer
112			is not an integer.
113	root	1.65	- unbundle JSON::XS::Boolean into own pm file so Storable
114			and similar modules can resolve the overloading when thawing.
115	root	1.56
116	root	1.55	1.3 Sun Jun 24 01:55:02 CEST 2007
117	root	1.54	- make JSON::XS::true and false special overloaded objects
118			and return those instead of 1 and 0 for those json atoms
119			(JSON::PP compatibility is NOT achieved yet).
120			- add JSON::XS::is_bool predicate to test for those special
121			values.
122	root	1.52	- add a reference to
123			http://jpsykes.com/47/practical-csrf-and-json-security.
124	root	1.60	- removed require 5.8.8 again, it is just not very expert-friendly.
125			Also try to be more compatible with slightly older versions,
126	root	1.54	which are not recommended (because they are buggy).
127	root	1.52
128	root	1.51	1.24 Mon Jun 11 05:40:49 CEST 2007
129	root	1.49	- added informative section on JSON-as-YAML.
130	root	1.51	- get rid of some c99-isms again.
131	root	1.50	- localise dec->cur in decode_str, speeding up
132			string decoding considerably (>15% on my amd64 + gcc).
133			- increased SHORT_STRING_LEN to 16kb: stack space is
134			usually plenty, and this actually saves memory
135	root	1.51	when !shrinking as short strings will fit perfectly.
136	root	1.49
137	root	1.47	1.23 Wed Jun 6 20:13:06 CEST 2007
138	root	1.46	- greatly improved small integer encoding and decoding speed.
139			- implement a number of µ-optimisations.
140	root	1.47	- updated benchmarks.
141	root	1.46
142	root	1.45	1.22 Thu May 24 00:07:25 CEST 2007
143	root	1.42	- require 5.8.8 explicitly as older perls do not seem to offer
144			the required macros.
145	root	1.43	- possibly made it compile on so-called C compilers by microsoft.
146	root	1.42
147	root	1.41	1.21 Wed May 9 18:40:32 CEST 2007
148	root	1.47	- character offset reported for trailing garbage was random.
149	root	1.41
150	root	1.40	1.2 Wed May 9 18:35:01 CEST 2007
151			- decode did not work with magical scalars (doh!).
152	root	1.38	- added latin1 flag to produce JSON texts in the latin1 subset
153			of unicode.
154	root	1.39	- flag trailing garbage as error.
155			- new decode_prefix method that returns the number
156			of characters consumed by a decode.
157	root	1.40	- max octets/char in perls UTF-X is actually 13, not 11,
158			as pointed out by Glenn Linderman.
159			- fixed typoe reported by YAMASHINA Hio.
160	root	1.34
161	root	1.32	1.11 Mon Apr 9 07:05:49 CEST 2007
162			- properly 0-terminate sv's returned by encode to help
163			C libraries that expect that 0 to be there.
164	root	1.31	- partially "port" JSON from C to microsofts fucking broken
165			pseudo-C. They should be burned to the ground for pissing
166			on standards. And I should be stoned for even trying to
167	root	1.32	support this filthy excuse for a c compiler.
168	root	1.6
169	root	1.30	1.1 Wed Apr 4 01:45:00 CEST 2007
170	root	1.28	- clarify documentation (pointed out by Quinn Weaver).
171	root	1.29	- decode_utf8 sometimes did not correctly flag errors,
172			leading to segfaults.
173	root	1.30	- further reduced default nesting depth to 512 due to the test
174			failure by that anonymous "chris" whose e-mail address seems
175			to be impossible to get. Tests on other freebsd systems indicate
176			that this is likely a problem in his/her configuration and not this
177			module.
178			- renamed json => JSON in error messages.
179			- corrected the character offset in some error messages.
180	root	1.28
181	root	1.27	1.01 Sat Mar 31 16:15:40 CEST 2007
182			- do not segfault when from_json/decode gets passed
183			a non-string object (reported by Florian Ragwitz).
184			This has no effect on normal operation.
185
186	root	1.25	1.0 Thu Mar 29 04:43:34 CEST 2007
187			- the long awaited (by me) 1.0 version.
188			- add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
189			true and false.
190	root	1.24	- add some more notes to shrink, as suggested by Alex Efros.
191	root	1.25	- improve testsuite.
192	root	1.26	- halve the default nesting depth limit, to hopefully make it
193	root	1.25	work on Freebsd (unfortunately, the cpan tester did not
194			send me his report, so I cannot ask about the stack limit on fbsd).
195	root	1.24
196	root	1.23	0.8 Mon Mar 26 00:10:48 CEST 2007
197	root	1.21	- fix a memleak when decoding hashes.
198	root	1.20	- export jsonToBj and objToJson as aliases
199			to to_json and from_json, to reduce incompatibilities
200			between JSON/JSON::PC and JSON::XS. (experimental).
201	root	1.21	- implement a maximum nesting depth for both en- and de-coding.
202			- added a security considerations sections.
203	root	1.20
204	root	1.19	0.7 Sun Mar 25 01:46:30 CET 2007
205	root	1.16	- code cleanup.
206			- fix a memory overflow bug when indenting.
207			- pretty-printing now up to 15% faster.
208			- improve decoding speed of strings by
209			up to 50% by specialcasing short strings.
210			- further decoding speedups for strings using
211			lots of \u escapes.
212	root	1.17	- improve utf8 decoding speed for U+80 .. U+7FF.
213	root	1.16
214	root	1.15	0.5 Sat Mar 24 20:41:51 CET 2007
215	root	1.14	- added the UTF-16 encoding example hinted at in previous
216			versions.
217			- minor documentation fixes.
218	root	1.15	- fix a bug in and optimise canonicalising fastpath
219			(reported by Craig Manley).
220			- remove a subtest that breaks with bleadperl (reported
221			by Andreas König).
222	root	1.14
223	root	1.13	0.31 Sat Mar 24 02:14:34 CET 2007
224	root	1.12	- documentation updates.
225	root	1.13	- do some casting to hopefully fix Andreas' problem.
226			- nuke bogus json rpc stuff.
227	root	1.12
228	root	1.11	0.3 Fri Mar 23 19:33:21 CET 2007
229	root	1.5	- remove spurious PApp::Util reference (John McNamara).
230			- adapted lots of tests from other json modules
231			(idea by Chris Carline).
232	root	1.9	- documented mapping from json to perl and vice versa.
233	root	1.11	- improved the documentation by adding more examples.
234	root	1.5	- added short escaping forms, reducing the created
235			json texts a bit.
236			- added shrink flag.
237			- when flag methods are called without enable argument
238			they will by default enable their flag.
239			- considerably improved string encoding speed (at least
240			with gcc 4).
241	root	1.7	- added a test that covers lots of different characters.
242			- clarified some error messages.
243			- error messages now use correct character offset
244			with F_UTF8.
245	root	1.8	- improve the "no bytes" and "no warnings" hacks in
246			case the called functions do... stuff.
247	root	1.9	- croak when encoding to ascii and an out-of-range
248			(non-unicode) codepoint is encountered.
249	root	1.4
250	root	1.3	0.2 Fri Mar 23 00:23:34 CET 2007
251	root	1.109	- the "could not sleep without debugging release".
252	root	1.3	it should basically work now, with many bugs as
253			no production tests have been run yet.
254			- added more testcases.
255			- the expected shitload of bugfixes.
256			- handle utf8 flag correctly in decode.
257			- fix segfault in decoder.
258			- utf8n_to_uvuni sets retlen to -1, but retlen is an
259			unsigned types (argh).
260			- fix decoding of utf-8 strings.
261			- improved error diagnostics.
262			- fix decoding of 'null'.
263			- fix parsing of empty array/hashes
264			- silence warnings when we prepare the croak message.
265
266	root	1.2	0.1 Thu Mar 22 22:13:43 CET 2007
267			- first release, very untested, basically just to claim
268			the namespace.
269	root	1.1
270			0.01 Thu Mar 22 06:08:12 CET 2007
271			- original version; cloned from Convert-Scalar
272