diff options
| -rw-r--r-- | Doc/lib/libre.tex | 17 | ||||
| -rw-r--r-- | Doc/libre.tex | 17 |
2 files changed, 30 insertions, 4 deletions
diff --git a/Doc/lib/libre.tex b/Doc/lib/libre.tex index 8397461..f9f4871 100644 --- a/Doc/lib/libre.tex +++ b/Doc/lib/libre.tex @@ -118,6 +118,18 @@ Adding \code{?} after the qualifier makes it perform the match in possible will be matched. Using \code{.*?} in the previous expression will match only \code{<H1>}. % +\item[\code{\{\var{m},\var{n}\}}] Causes the resulting RE to match from +\var{m} to \var{n} repetitions of the preceding RE, attempting to +match as many repetitions as possible. For example, \code{a\{3,5\}} +will match from 3 to 5 'a' characters. +% +\item[\code{\{\var{m},\var{n}\}?}] Causes the resulting RE to +match from \var{m} to \var{n} repetitions of the preceding RE, +attempting to match as \emph{few} repetitions as possible. This is +the non-greedy version of the previous qualifier. For example, on the +6-character string 'aaaaaa', \code{a\{3,5\}} will match 5 'a' +characters, while \code{a\{3,5\}?} will only match 3 characters. +% \item[\code{\e}] Either escapes special characters (permitting you to match characters like '*?+\&\$'), or signals a special sequence; special sequences are discussed below. @@ -346,14 +358,15 @@ expression will be used several times in a single program. \begin{funcdesc}{match}{pattern\, string\optional{\, flags}} If zero or more characters at the beginning of \var{string} match the regular expression \var{pattern}, return a corresponding - \code{Match} object. Return \code{None} if the string does not + \code{MatchObject} instance. Return \code{None} if the string does not match the pattern; note that this is different from a zero-length match. \end{funcdesc} \begin{funcdesc}{search}{pattern\, string\optional{\, flags}} Scan through \var{string} looking for a location where the regular - expression \var{pattern} produces a match. Return \code{None} if no + expression \var{pattern} produces a match, and return a corresponding \code{MatchObject} instance. + Return \code{None} if no position in the string matches the pattern; note that this is different from finding a zero-length match at some point in the string. \end{funcdesc} diff --git a/Doc/libre.tex b/Doc/libre.tex index 8397461..f9f4871 100644 --- a/Doc/libre.tex +++ b/Doc/libre.tex @@ -118,6 +118,18 @@ Adding \code{?} after the qualifier makes it perform the match in possible will be matched. Using \code{.*?} in the previous expression will match only \code{<H1>}. % +\item[\code{\{\var{m},\var{n}\}}] Causes the resulting RE to match from +\var{m} to \var{n} repetitions of the preceding RE, attempting to +match as many repetitions as possible. For example, \code{a\{3,5\}} +will match from 3 to 5 'a' characters. +% +\item[\code{\{\var{m},\var{n}\}?}] Causes the resulting RE to +match from \var{m} to \var{n} repetitions of the preceding RE, +attempting to match as \emph{few} repetitions as possible. This is +the non-greedy version of the previous qualifier. For example, on the +6-character string 'aaaaaa', \code{a\{3,5\}} will match 5 'a' +characters, while \code{a\{3,5\}?} will only match 3 characters. +% \item[\code{\e}] Either escapes special characters (permitting you to match characters like '*?+\&\$'), or signals a special sequence; special sequences are discussed below. @@ -346,14 +358,15 @@ expression will be used several times in a single program. \begin{funcdesc}{match}{pattern\, string\optional{\, flags}} If zero or more characters at the beginning of \var{string} match the regular expression \var{pattern}, return a corresponding - \code{Match} object. Return \code{None} if the string does not + \code{MatchObject} instance. Return \code{None} if the string does not match the pattern; note that this is different from a zero-length match. \end{funcdesc} \begin{funcdesc}{search}{pattern\, string\optional{\, flags}} Scan through \var{string} looking for a location where the regular - expression \var{pattern} produces a match. Return \code{None} if no + expression \var{pattern} produces a match, and return a corresponding \code{MatchObject} instance. + Return \code{None} if no position in the string matches the pattern; note that this is different from finding a zero-length match at some point in the string. \end{funcdesc} |