| 2 |
------------------ |
------------------ |
| 3 |
|
|
| 4 |
|
|
| 5 |
|
Version 2.07 29-Jul-99 |
| 6 |
|
---------------------- |
| 7 |
|
|
| 8 |
|
1. The documentation is now supplied in plain text form and HTML as well as in |
| 9 |
|
the form of man page sources. |
| 10 |
|
|
| 11 |
|
2. C++ compilers don't like assigning (void *) values to other pointer types. |
| 12 |
|
In particular this affects malloc(). Although there is no problem in Standard |
| 13 |
|
C, I've put in casts to keep C++ compilers happy. |
| 14 |
|
|
| 15 |
|
3. Typo on pcretest.c; a cast of (unsigned char *) in the POSIX regexec() call |
| 16 |
|
should be (const char *). |
| 17 |
|
|
| 18 |
|
4. If NOPOSIX is defined, pcretest.c compiles without POSIX support. This may |
| 19 |
|
be useful for non-Unix systems who don't want to bother with the POSIX stuff. |
| 20 |
|
However, I haven't made this a standard facility. The documentation doesn't |
| 21 |
|
mention it, and the Makefile doesn't support it. |
| 22 |
|
|
| 23 |
|
5. The Makefile now contains an "install" target, with editable destinations at |
| 24 |
|
the top of the file. The pcretest program is not installed. |
| 25 |
|
|
| 26 |
|
6. pgrep -V now gives the PCRE version number and date. |
| 27 |
|
|
| 28 |
|
7. Fixed bug: a zero repetition after a literal string (e.g. /abcde{0}/) was |
| 29 |
|
causing the entire string to be ignored, instead of just the last character. |
| 30 |
|
|
| 31 |
|
8. If a pattern like /"([^\\"]+|\\.)*"/ is applied in the normal way to a |
| 32 |
|
non-matching string, it can take a very, very long time, even for strings of |
| 33 |
|
quite modest length, because of the nested recursion. PCRE now does better in |
| 34 |
|
some of these cases. It does this by remembering the last required literal |
| 35 |
|
character in the pattern, and pre-searching the subject to ensure it is present |
| 36 |
|
before running the real match. In other words, it applies a heuristic to detect |
| 37 |
|
some types of certain failure quickly, and in the above example, if presented |
| 38 |
|
with a string that has no trailing " it gives "no match" very quickly. |
| 39 |
|
|
| 40 |
|
9. A new runtime option PCRE_NOTEMPTY causes null string matches to be ignored; |
| 41 |
|
other alternatives are tried instead. |
| 42 |
|
|
| 43 |
|
|
| 44 |
|
Version 2.06 09-Jun-99 |
| 45 |
|
---------------------- |
| 46 |
|
|
| 47 |
|
1. Change pcretest's output for amount of store used to show just the code |
| 48 |
|
space, because the remainder (the data block) varies in size between 32-bit and |
| 49 |
|
64-bit systems. |
| 50 |
|
|
| 51 |
|
2. Added an extra argument to pcre_exec() to supply an offset in the subject to |
| 52 |
|
start matching at. This allows lookbehinds to work when searching for multiple |
| 53 |
|
occurrences in a string. |
| 54 |
|
|
| 55 |
|
3. Added additional options to pcretest for testing multiple occurrences: |
| 56 |
|
|
| 57 |
|
/+ outputs the rest of the string that follows a match |
| 58 |
|
/g loops for multiple occurrences, using the new startoffset argument |
| 59 |
|
/G loops for multiple occurrences by passing an incremented pointer |
| 60 |
|
|
| 61 |
|
4. PCRE wasn't doing the "first character" optimization for patterns starting |
| 62 |
|
with \b or \B, though it was doing it for other lookbehind assertions. That is, |
| 63 |
|
it wasn't noticing that a match for a pattern such as /\bxyz/ has to start with |
| 64 |
|
the letter 'x'. On long subject strings, this gives a significant speed-up. |
| 65 |
|
|
| 66 |
|
|
| 67 |
|
Version 2.05 21-Apr-99 |
| 68 |
|
---------------------- |
| 69 |
|
|
| 70 |
|
1. Changed the type of magic_number from int to long int so that it works |
| 71 |
|
properly on 16-bit systems. |
| 72 |
|
|
| 73 |
|
2. Fixed a bug which caused patterns starting with .* not to work correctly |
| 74 |
|
when the subject string contained newline characters. PCRE was assuming |
| 75 |
|
anchoring for such patterns in all cases, which is not correct because .* will |
| 76 |
|
not pass a newline unless PCRE_DOTALL is set. It now assumes anchoring only if |
| 77 |
|
DOTALL is set at top level; otherwise it knows that patterns starting with .* |
| 78 |
|
must be retried after every newline in the subject. |
| 79 |
|
|
| 80 |
|
|
| 81 |
Version 2.04 18-Feb-99 |
Version 2.04 18-Feb-99 |
| 82 |
---------------------- |
---------------------- |
| 83 |
|
|
Parent Directory
| 
Revision Log
| 
Patch