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documented \{n,m\} intervals

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Stefan Monnier
2000-02-14 17:04:17 +00:00
parent d7f89643a4
commit 8a44227ac5
1 changed files with 11 additions and 0 deletions
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man/search.texi
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@@ -432,6 +432,17 @@ are non-greedy variants of the operators above. The normal operators
as they can, while if you append a @samp{?} after them, it makes them
non-greedy: they will match as little as possible.
@item \@{n,m\@}
is another postfix operator that specifies an interval of iteration:
the preceding regular expression must match between @samp{n} and
@samp{m} times. If @samp{m} is omitted, then there is no upper bound
and if @samp{,m} is omitted, then the regular expression must match
exactly @samp{n} times. @*
@samp{\@{0,1\@}} is equivalent to @samp{?}. @*
@samp{\@{0,\@}} is equivalent to @samp{*}. @*
@samp{\@{1,\@}} is equivalent to @samp{+}. @*
@samp{\@{n\@}} is equivalent to @samp{\@{n,n\@}}.
@item [ @dots{} ]
is a @dfn{character set}, which begins with @samp{[} and is terminated
by @samp{]}. In the simplest case, the characters between the two