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| author | nigel <nigel@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2007-02-24 21:39:37 +0000 |
|---|---|---|
| committer | nigel <nigel@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2007-02-24 21:39:37 +0000 |
| commit | e87cad160ebb5eefbd74344fc0c78318432ae433 (patch) | |
| tree | 2f2cefcd2d102f14b817b82e66650ad0a94507fa /doc/pcre.txt | |
| parent | 722283cf906c849b43a73af9527627e0fd2a3e8d (diff) | |
| download | pcre-e87cad160ebb5eefbd74344fc0c78318432ae433.tar.gz | |
Load pcre-3.4 into code/trunk.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@51 2f5784b3-3f2a-0410-8824-cb99058d5e15
Diffstat (limited to 'doc/pcre.txt')
| -rw-r--r-- | doc/pcre.txt | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/pcre.txt b/doc/pcre.txt index 29cc490..1db4b53 100644 --- a/doc/pcre.txt +++ b/doc/pcre.txt @@ -1462,7 +1462,7 @@ REPETITION /* first command */ not comment /* second comment */ - fails, because it matches the entire string due to the + fails, because it matches the entire string owing to the greediness of the .* item. However, if a quantifier is followed by a question mark, it @@ -1838,10 +1838,11 @@ CONDITIONAL SUBPATTERNS There are two kinds of condition. If the text between the parentheses consists of a sequence of digits, the condition is satisfied if the capturing subpattern of that number has - previously matched. Consider the following pattern, which - contains non-significant white space to make it more read- - able (assume the PCRE_EXTENDED option) and to divide it into - three parts for ease of discussion: + previously matched. The number must be greater than zero. + Consider the following pattern, which contains non- + significant white space to make it more readable (assume the + PCRE_EXTENDED option) and to divide it into three parts for + ease of discussion: ( \( )? [^()]+ (?(1) \) ) @@ -2001,9 +2002,9 @@ PERFORMANCE repeat can match 0, 1, 2, 3, or 4 times, and for each of those cases other than 0, the + repeats can match different numbers of times.) When the remainder of the pattern is such - that the entire match is going to fail, PCRE has in - principle to try every possible variation, and this can take - an extremely long time. + that the entire match is going to fail, PCRE has in princi- + ple to try every possible variation, and this can take an + extremely long time. An optimization catches some of the more simple cases such as @@ -2105,7 +2106,6 @@ UTF-8 SUPPORT The following UTF-8 features of Perl 5.6 are not imple- mented: - 1. The escape sequence \C to match a single byte. 2. The use of Unicode tables and properties and escapes \p, |