glimpse.chronicle

harvest是一个下载html网页得机器人

0. Created file on 2/May/94
1. Added patches to main.c to use sizeof(char*) instead of 4 in relevant
   places. Same for other pointer mallocs.
   -- bg 2 May 1994
2. Successfully ported to DEC-ALPHA: changes to routines in agrep/agrep.c
   -- bg 10 May 1994
3. Added the new mgrep routine. Removed bugs (pattern too long) related to
   using shift-or/and algorithm to search for booleans: now it uses mgrep.
   -- bg 26-30 May 1994
4. Added delimiter processing even with -f and -m.
   -- bg 31 May - 2 June 1994
5. Added structured queries support in June 1994
   -- Syntax of glimpse:
	glimpse <options> 'a1=v1,a2=v2...'	(series of ORs)
	glimpse <options> 'a1=v1;a2=v2...'	(series of ANDs)
   -- Syntax of glimpseindex:
	glimpseindex -s <options/files>
   -- NOTES:
	v1, v2 etc. must lie within the range of a1, a2, etc., i.e., if
	a1 is in the region [offset, offset+len] in a file, v1 must lie
	compleletely within that range.
	A new glimpse-file called .glimpse_attributes is created to hold
	the attributes discovered while indexing with -s. A-V searches
	may not give out an error message if the index is not built with -s.
6. Added glimpseserver to speed up queries by reading in the index ahead of
   time, during July 1994.
7. Integrated compression into glimpse during July 1994. The new option to
   glimpseindex can now index compressed files (those compressed with tcomp).
8. Added multipattern search for simple patterns with -w in compressed files
   during August 1994.
9. Ability to take input files from command line (-F) (Sep 10/94)
10. Added byte level index support (Sep 23/94)
11. Added support for arbitrary boolean expressions (Oct 10/94)
12. Added support for arbitary filtering with -z option (Oct 94)
13. Completely integrated glimpseserver into Harvest (Jan 95)
14. Speeded up structured queries and -W option (filtering) (Feb 95)
15. Added -W -z support (June 1995)
16. Added undocumented options for index-search/analysis (SFS_COMPAT, Jun 1995)
17. Removed bugs related to structured queries and booleans w/ -b (Jul 1995)
18. Added -z and structured queries support (Aug 1995)
19. Changed maximum pattern and indexable word sizes (Sep 1995)
20. Made it portable to various architectures (see README.install, Oct 1995)
21. Added "-f filename" option to glimpse: it allows you to restrict the
    search to only those files whose names appear in "filename" (Jan 1996).
22. Fixed the agrep bug where -n was not working with ISO chars (Jan 1996).
23. Added -t to glimpseindex that sorts .glimpse_filenames by decreasing order
    of modify time (st_mtime in stat structure);
    Added -@ option to glimpse to print time of file along with its name;
    (Feb 1996)
24. Added "-Y days" option to print files that were modified "days" before
    the index was created (Mar 1996).
25. Added support for handling filenames/directorynames with special characters:
    they can now have ' " & > <   ! etc., whatever and glimpse works just fine.
26. Added conversion program for neighborhood manipulation in webglimpse (9/96).
27. Added limited support for NOT in glimpse (index search or -W only) (11/96).
28. Added support to search for patterns with repeating strings (11/96):
	"{computer;science},{computer;chronicles}"
    This now works in agrep as well as glimpse. However, its for simple
    patterns only (i.e., no regexp or spelling-errors).
29. Fixed some nagging memory leaks and segfaults on Solaris (10/96).
30. Fixed multiple matches / missed matches problems with -W (11/96).
31. Release of version 4.1 (10/97)