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Version 2.06 09-Jun-99 |
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1. Change pcretest's output for amount of store used to show just the code |
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space, because the remainder (the data block) varies in size between 32-bit and |
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64-bit systems. |
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2. Added an extra argument to pcre_exec() to supply an offset in the subject to |
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start matching at. This allows lookbehinds to work when searching for multiple |
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occurrences in a string. |
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3. Added additional options to pcretest for testing multiple occurrences: |
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/+ outputs the rest of the string that follows a match |
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/g loops for multiple occurrences, using the new startoffset argument |
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/G loops for multiple occurrences by passing an incremented pointer |
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4. PCRE wasn't doing the "first character" optimization for patterns starting |
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with \b or \B, though it was doing it for other lookbehind assertions. That is, |
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it wasn't noticing that a match for a pattern such as /\bxyz/ has to start with |
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the letter 'x'. On long subject strings, this gives a significant speed-up. |
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Version 2.05 21-Apr-99 |
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1. Changed the type of magic_number from int to long int so that it works |
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properly on 16-bit systems. |
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2. Fixed a bug which caused patterns starting with .* not to work correctly |
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when the subject string contained newline characters. PCRE was assuming |
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anchoring for such patterns in all cases, which is not correct because .* will |
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not pass a newline unless PCRE_DOTALL is set. It now assumes anchoring only if |
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DOTALL is set at top level; otherwise it knows that patterns starting with .* |
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must be retried after every newline in the subject. |
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Version 2.04 18-Feb-99 |
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1. For parenthesized subpatterns with repeats whose minimum was zero, the |
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computation of the store needed to hold the pattern was incorrect (too large). |
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If such patterns were nested a few deep, this could multiply and become a real |
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problem. |
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2. Added /M option to pcretest to show the memory requirement of a specific |
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pattern. Made -m a synonym of -s (which does this globally) for compatibility. |
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3. Subpatterns of the form (regex){n,m} (i.e. limited maximum) were being |
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compiled in such a way that the backtracking after subsequent failure was |
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pessimal. Something like (a){0,3} was compiled as (a)?(a)?(a)? instead of |
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((a)((a)(a)?)?)? with disastrous performance if the maximum was of any size. |
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Version 2.03 02-Feb-99 |
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1. Fixed typo and small mistake in man page. |
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2. Added 4th condition (GPL supersedes if conflict) and created separate |
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LICENCE file containing the conditions. |
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3. Updated pcretest so that patterns such as /abc\/def/ work like they do in |
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Perl, that is the internal \ allows the delimiter to be included in the |
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pattern. Locked out the use of \ as a delimiter. If \ immediately follows |
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the final delimiter, add \ to the end of the pattern (to test the error). |
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4. Added the convenience functions for extracting substrings after a successful |
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match. Updated pcretest to make it able to test these functions. |
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Version 2.02 14-Jan-99 |
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1. Initialized the working variables associated with each extraction so that |
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their saving and restoring doesn't refer to uninitialized store. |
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2. Put dummy code into study.c in order to trick the optimizer of the IBM C |
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compiler for OS/2 into generating correct code. Apparently IBM isn't going to |
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fix the problem. |
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3. Pcretest: the timing code wasn't using LOOPREPEAT for timing execution |
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calls, and wasn't printing the correct value for compiling calls. Increased the |
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default value of LOOPREPEAT, and the number of significant figures in the |
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times. |
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4. Changed "/bin/rm" in the Makefile to "-rm" so it works on Windows NT. |
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5. Renamed "deftables" as "dftables" to get it down to 8 characters, to avoid |
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a building problem on Windows NT with a FAT file system. |
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Version 2.01 21-Oct-98 |
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1. Changed the API for pcre_compile() to allow for the provision of a pointer |
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to character tables built by pcre_maketables() in the current locale. If NULL |
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is passed, the default tables are used. |
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Version 2.00 24-Sep-98 |
Version 2.00 24-Sep-98 |
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| 
Revision Log
| 
Patch