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ChangeLog for PCRE |
ChangeLog for PCRE |
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Version 7.2 01-May-07 |
Version 7.3 05-Jul-07 |
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1. In the rejigging of the build system that eventually resulted in 7.1, the |
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line "#include <pcre.h>" was included in pcre_internal.h. The use of angle |
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brackets there is not right, since it causes compilers to look for an |
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installed pcre.h, not the version that is in the source that is being |
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compiled (which of course may be different). I have changed it back to: |
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#include "pcre.h" |
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I have a vague recollection that the change was concerned with compiling in |
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different directories, but in the new build system, that is taken care of |
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by the VPATH setting the Makefile. |
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Version 7.2 19-Jun-07 |
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1. If the fr_FR locale cannot be found for test 3, try the "french" locale, |
1. If the fr_FR locale cannot be found for test 3, try the "french" locale, |
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3. Add code to configure.ac to remove -g from the CFLAGS default settings. |
3. Add code to configure.ac to remove -g from the CFLAGS default settings. |
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4. Some of the "internals" tests were previously cut out when the link size |
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was not 2, because the output contained actual offsets. The recent new |
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"Z" feature of pcretest means that these can be cut out, making the tests |
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usable with all link sizes. |
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5. Implemented Stan Switzer's goto replacement for longjmp() when not using |
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stack recursion. This gives a massive performance boost under BSD, but just |
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a small improvement under Linux. However, it saves one field in the frame |
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in all cases. |
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6. Added more features from the forthcoming Perl 5.10: |
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(a) (?-n) (where n is a string of digits) is a relative subroutine or |
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recursion call. It refers to the nth most recently opened parentheses. |
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(b) (?+n) is also a relative subroutine call; it refers to the nth next |
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to be opened parentheses. |
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(c) Conditions that refer to capturing parentheses can be specified |
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relatively, for example, (?(-2)... or (?(+3)... |
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(d) \K resets the start of the current match so that everything before |
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is not part of it. |
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(e) \k{name} is synonymous with \k<name> and \k'name' (.NET compatible). |
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(f) \g{name} is another synonym - part of Perl 5.10's unification of |
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reference syntax. |
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(g) (?| introduces a group in which the numbering of parentheses in each |
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alternative starts with the same number. |
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(h) \h, \H, \v, and \V match horizontal and vertical whitespace. |
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7. Added two new calls to pcre_fullinfo(): PCRE_INFO_OKPARTIAL and |
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PCRE_INFO_JCHANGED. |
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8. A pattern such as (.*(.)?)* caused pcre_exec() to fail by either not |
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terminating or by crashing. Diagnosed by Viktor Griph; it was in the code |
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for detecting groups that can match an empty string. |
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9. A pattern with a very large number of alternatives (more than several |
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hundred) was running out of internal workspace during the pre-compile |
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phase, where pcre_compile() figures out how much memory will be needed. A |
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bit of new cunning has reduced the workspace needed for groups with |
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alternatives. The 1000-alternative test pattern now uses 12 bytes of |
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workspace instead of running out of the 4096 that are available. |
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10. Inserted some missing (unsigned int) casts to get rid of compiler warnings. |
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11. Applied patch from Google to remove an optimization that didn't quite work. |
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The report of the bug said: |
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pcrecpp::RE("a*").FullMatch("aaa") matches, while |
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pcrecpp::RE("a*?").FullMatch("aaa") does not, and |
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pcrecpp::RE("a*?\\z").FullMatch("aaa") does again. |
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12. If \p or \P was used in non-UTF-8 mode on a character greater than 127 |
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it matched the wrong number of bytes. |
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Version 7.1 24-Apr-07 |
Version 7.1 24-Apr-07 |
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