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Documentation update.

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Philip.Hazel 2020-01-27 15:36:29 +00:00
parent b040e2e1cd
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3 changed files with 449 additions and 435 deletions
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7
doc/html/pcre2pattern.html
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@ -2659,6 +2659,11 @@ as before because nothing has changed, so using a non-atomic assertion just
wastes resources. wastes resources.
</P> </P>
<P> <P>
There is one exception to backtracking into a non-atomic assertion. If an
(*ACCEPT) control verb is triggered, the assertion succeeds atomically. That
is, a subsequent match failure cannot backtrack into the assertion.
</P>
<P>
Non-atomic assertions are not supported by the alternative matching function Non-atomic assertions are not supported by the alternative matching function
<b>pcre2_dfa_match()</b>. They are supported by JIT, but only if they do not <b>pcre2_dfa_match()</b>. They are supported by JIT, but only if they do not
contain any control verbs such as (*ACCEPT). (This may change in future). Note contain any control verbs such as (*ACCEPT). (This may change in future). Note
@ -3828,7 +3833,7 @@ Cambridge, England.
</P> </P>
<br><a name="SEC32" href="#TOC1">REVISION</a><br> <br><a name="SEC32" href="#TOC1">REVISION</a><br>
<P> <P>
Last updated: 24 January 2020 Last updated: 27 January 2020
<br> <br>
Copyright &copy; 1997-2020 University of Cambridge. Copyright &copy; 1997-2020 University of Cambridge.
<br> <br>

7
doc/pcre2.txt
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@ -8396,6 +8396,11 @@ NON-ATOMIC ASSERTIONS
pattern match fails exactly as before because nothing has changed, so pattern match fails exactly as before because nothing has changed, so
using a non-atomic assertion just wastes resources. using a non-atomic assertion just wastes resources.
There is one exception to backtracking into a non-atomic assertion. If
an (*ACCEPT) control verb is triggered, the assertion succeeds atomi-
cally. That is, a subsequent match failure cannot backtrack into the
assertion.
Non-atomic assertions are not supported by the alternative matching Non-atomic assertions are not supported by the alternative matching
function pcre2_dfa_match(). They are supported by JIT, but only if they function pcre2_dfa_match(). They are supported by JIT, but only if they
do not contain any control verbs such as (*ACCEPT). (This may change in do not contain any control verbs such as (*ACCEPT). (This may change in
@ -9490,7 +9495,7 @@ AUTHOR
REVISION REVISION
Last updated: 24 January 2020 Last updated: 27 January 2020
Copyright (c) 1997-2020 University of Cambridge. Copyright (c) 1997-2020 University of Cambridge.
------------------------------------------------------------------------------ ------------------------------------------------------------------------------

8
doc/pcre2pattern.3
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@ -1,4 +1,4 @@
.TH PCRE2PATTERN 3 "24 January 2020" "PCRE2 10.35" .TH PCRE2PATTERN 3 "27 January 2020" "PCRE2 10.35"
.SH NAME .SH NAME
PCRE2 - Perl-compatible regular expressions (revised API) PCRE2 - Perl-compatible regular expressions (revised API)
.SH "PCRE2 REGULAR EXPRESSION DETAILS" .SH "PCRE2 REGULAR EXPRESSION DETAILS"
@ -2671,6 +2671,10 @@ pattern. If this is not the case, the rest of the pattern match fails exactly
as before because nothing has changed, so using a non-atomic assertion just as before because nothing has changed, so using a non-atomic assertion just
wastes resources. wastes resources.
.P .P
There is one exception to backtracking into a non-atomic assertion. If an
(*ACCEPT) control verb is triggered, the assertion succeeds atomically. That
is, a subsequent match failure cannot backtrack into the assertion.
.P
Non-atomic assertions are not supported by the alternative matching function Non-atomic assertions are not supported by the alternative matching function
\fBpcre2_dfa_match()\fP. They are supported by JIT, but only if they do not \fBpcre2_dfa_match()\fP. They are supported by JIT, but only if they do not
contain any control verbs such as (*ACCEPT). (This may change in future). Note contain any control verbs such as (*ACCEPT). (This may change in future). Note
@ -3872,6 +3876,6 @@ Cambridge, England.
.rs .rs
.sp .sp
.nf .nf
Last updated: 24 January 2020 Last updated: 27 January 2020
Copyright (c) 1997-2020 University of Cambridge. Copyright (c) 1997-2020 University of Cambridge.
.fi .fi