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* doc/lispref/searching.texi: Document regexp repetition limit.

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Noam Postavsky 2017-12-11 18:52:52 -05:00
parent 08a6195571
commit 463f96b481
1 changed files with 9 additions and 1 deletions
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doc/lispref/searching.texi
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@ -639,7 +639,15 @@ and nothing else. @samp{c[ad]\@{3\@}r} matches string such as
is a more general postfix operator that specifies repetition with a is a more general postfix operator that specifies repetition with a
minimum of @var{m} repeats and a maximum of @var{n} repeats. If @var{m} minimum of @var{m} repeats and a maximum of @var{n} repeats. If @var{m}
is omitted, the minimum is 0; if @var{n} is omitted, there is no is omitted, the minimum is 0; if @var{n} is omitted, there is no
maximum. maximum. For both forms, @var{m} and @var{n}, if specified, may be no
larger than
@ifnottex
2**15 @minus{} 1
@end ifnottex
@tex
@math{2^{15}-1}
@end tex
.
For example, @samp{c[ad]\@{1,2\@}r} matches the strings @samp{car}, For example, @samp{c[ad]\@{1,2\@}r} matches the strings @samp{car},
@samp{cdr}, @samp{caar}, @samp{cadr}, @samp{cdar}, and @samp{cddr}, and @samp{cdr}, @samp{caar}, @samp{cadr}, @samp{cdar}, and @samp{cddr}, and