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Replace multiple copies of extended grapheme sequence code with a single

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subroutine.
This commit is contained in:
ph10 2017-09-12 16:28:42 +00:00
parent 0af3254f1e
commit b9a832c70e
10 changed files with 163 additions and 403 deletions
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1
CMakeLists.txt
View File

@ -432,6 +432,7 @@ SET(PCRE2_SOURCES
src/pcre2_convert.c
src/pcre2_dfa_match.c
src/pcre2_error.c
src/pcre2_extuni.c
src/pcre2_find_bracket.c
src/pcre2_jit_compile.c
src/pcre2_maketables.c

6
ChangeLog
View File

@ -5,7 +5,11 @@ Change Log for PCRE2
Version 10.31 xx-xxx-201x
-------------------------
1. Fix typo (missing ]) in VMS code in pcre2test.c.
1. Fix typo (missing ]) in VMS code in pcre2test.c.
2. Replace the replicated code for matching extended Unicode grapheme sequences
(which got a lot more complicated by change 10.30/49) by a single subroutine
that is called by both pcre2_match() and pcre2_dfa_match().
Version 10.30 14-August-2017

1
Makefile.am
View File

@ -351,6 +351,7 @@ COMMON_SOURCES = \
src/pcre2_convert.c \
src/pcre2_dfa_match.c \
src/pcre2_error.c \
src/pcre2_extuni.c \
src/pcre2_find_bracket.c \
src/pcre2_internal.h \
src/pcre2_intmodedep.h \

4
NON-AUTOTOOLS-BUILD
View File

@ -91,8 +91,10 @@ can skip ahead to the CMake section.
pcre2_compile.c
pcre2_config.c
pcre2_context.c
pcre2_convert.c
pcre2_dfa_match.c
pcre2_error.c
pcre2_extuni.c
pcre2_find_bracket.c
pcre2_jit_compile.c
pcre2_maketables.c
@ -377,4 +379,4 @@ and executable, is in EBCDIC and native z/OS file formats and this is the
recommended download site.
=============================
Last Updated: 17 March 2017
Last Updated: 12 September 2017

2
PrepareRelease
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@ -196,8 +196,10 @@ files="\
src/pcre2_compile.c \
src/pcre2_config.c \
src/pcre2_context.c \
src/pcre2_convert.c \
src/pcre2_dfa_match.c \
src/pcre2_error.c \
src/pcre2_extuni.c \
src/pcre2_find_bracket.c \
src/pcre2_internal.h \
src/pcre2_intmodedep.h \

3
README
View File

@ -773,6 +773,7 @@ The distribution should contain the files listed below.
src/pcre2_convert.c )
src/pcre2_dfa_match.c )
src/pcre2_error.c )
src/pcre2_extuni.c )
src/pcre2_find_bracket.c )
src/pcre2_jit_compile.c )
src/pcre2_jit_match.c ) sources for the functions in the library,
@ -882,4 +883,4 @@ The distribution should contain the files listed below.
Philip Hazel
Email local part: ph10
Email domain: cam.ac.uk
Last updated: 18 July 2017
Last updated: 12 September 2017

213
src/pcre2_dfa_match.c
View File

@ -1364,63 +1364,14 @@ for (;;)
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
uint32_t lgb, rgb;
PCRE2_SPTR nptr = ptr + clen;
int ncount = 0;
if (count > 0 && codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1u << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = nptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(d, bptr);
}
else
#endif
d = *bptr;
if (UCD_GRAPHBREAK(d) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
ncount++;
nptr += dlen;
}
(void)PRIV(extuni)(c, ptr + clen, mb->start_subject, end_subject, utf,
&ncount);
count++;
ADD_NEW_DATA(-state_offset, count, ncount);
}
@ -1663,8 +1614,6 @@ for (;;)
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
uint32_t lgb, rgb;
PCRE2_SPTR nptr = ptr + clen;
int ncount = 0;
if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSQUERY)
@ -1672,55 +1621,8 @@ for (;;)
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1u << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = nptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(d, bptr);
}
else
#endif
d = *bptr;
if (UCD_GRAPHBREAK(d) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
ncount++;
nptr += dlen;
}
(void)PRIV(extuni)(c, ptr + clen, mb->start_subject, end_subject, utf,
&ncount);
ADD_NEW_DATA(-(state_offset + count), 0, ncount);
}
break;
@ -1973,63 +1875,15 @@ for (;;)
count = current_state->count; /* Number already matched */
if (clen > 0)
{
uint32_t lgb, rgb;
PCRE2_SPTR nptr = ptr + clen;
PCRE2_SPTR nptr;
int ncount = 0;
if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1u << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = nptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(d, bptr);
}
else
#endif
d = *bptr;
if (UCD_GRAPHBREAK(d) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
ncount++;
nptr += dlen;
}
nptr = PRIV(extuni)(c, ptr + clen, mb->start_subject, end_subject, utf,
&ncount);
if (nptr >= end_subject && (mb->moptions & PCRE2_PARTIAL_HARD) != 0)
reset_could_continue = TRUE;
if (++count >= (int)GET2(code, 1))
@ -2206,58 +2060,9 @@ for (;;)
case OP_EXTUNI:
if (clen > 0)
{
uint32_t lgb, rgb;
PCRE2_SPTR nptr = ptr + clen;
int ncount = 0;
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1u << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = nptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(d, bptr);
}
else
#endif
d = *bptr;
if (UCD_GRAPHBREAK(d) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
ncount++;
nptr += dlen;
}
PCRE2_SPTR nptr = PRIV(extuni)(c, ptr + clen, mb->start_subject,
end_subject, utf, &ncount);
if (nptr >= end_subject && (mb->moptions & PCRE2_PARTIAL_HARD) != 0)
reset_could_continue = TRUE;
ADD_NEW_DATA(-(state_offset + 1), 0, ncount);

129
src/pcre2_extuni.c Normal file
View File

@ -0,0 +1,129 @@
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Original API code Copyright (c) 1997-2012 University of Cambridge
New API code Copyright (c) 2016-2017 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains an internal function that is used to match a Unicode
extended grapheme sequence. It is used by both pcre2_match() and
pcre2_def_match(). */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre2_internal.h"
/*************************************************
* Match an extended grapheme sequence *
*************************************************/
/*
Arguments:
c the first character
eptr pointer to next character
start_subject pointer to start of subject
end_subject pointer to end of subject
utf TRUE if in UTF mode
xcount pointer to count of additional characters,
or NULL if count not needed
Returns: pointer after the end of the sequence
*/
PCRE2_SPTR
PRIV(extuni)(uint32_t c, PCRE2_SPTR eptr, PCRE2_SPTR start_subject,
PCRE2_SPTR end_subject, BOOL utf, int *xcount)
{
int lgb = UCD_GRAPHBREAK(c);
while (eptr < end_subject)
{
int rgb;
int len = 1;
if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
rgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if there
are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator && rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = eptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(c, bptr);
}
else
#endif
c = *bptr;
if (UCD_GRAPHBREAK(c) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
eptr += len;
if (xcount != NULL) *xcount += 1;
}
return eptr;
}
/* End of pcre2_extuni.c */

3
src/pcre2_internal.h
View File

@ -1926,6 +1926,7 @@ is available. */
#define _pcre2_auto_possessify PCRE2_SUFFIX(_pcre2_auto_possessify_)
#define _pcre2_check_escape PCRE2_SUFFIX(_pcre2_check_escape_)
#define _pcre2_extuni PCRE2_SUFFIX(_pcre2_extuni_)
#define _pcre2_find_bracket PCRE2_SUFFIX(_pcre2_find_bracket_)
#define _pcre2_is_newline PCRE2_SUFFIX(_pcre2_is_newline_)
#define _pcre2_jit_free_rodata PCRE2_SUFFIX(_pcre2_jit_free_rodata_)
@ -1949,6 +1950,8 @@ extern int _pcre2_auto_possessify(PCRE2_UCHAR *, BOOL,
const compile_block *);
extern int _pcre2_check_escape(PCRE2_SPTR *, PCRE2_SPTR, uint32_t *,
int *, uint32_t, BOOL, compile_block *);
extern PCRE2_SPTR _pcre2_extuni(uint32_t, PCRE2_SPTR, PCRE2_SPTR, PCRE2_SPTR,
BOOL, int *);
extern PCRE2_SPTR _pcre2_find_bracket(PCRE2_SPTR, BOOL, int);
extern BOOL _pcre2_is_newline(PCRE2_SPTR, uint32_t, PCRE2_SPTR,
uint32_t *, BOOL);

204
src/pcre2_match.c
View File

@ -2440,55 +2440,9 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
}
else
{
int lgb, rgb;
GETCHARINCTEST(fc, Feptr);
lgb = UCD_GRAPHBREAK(fc);
while (Feptr < mb->end_subject)
{
int len = 1;
if (!utf) fc = *Feptr; else { GETCHARLEN(fc, Feptr, len); }
rgb = UCD_GRAPHBREAK(fc);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if there
are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator && rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = Feptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(fc, bptr);
}
else
#endif
fc = *bptr;
if (UCD_GRAPHBREAK(fc) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
Feptr += len;
}
Feptr = PRIV(extuni)(fc, Feptr, mb->start_subject, mb->end_subject, utf,
NULL);
}
CHECK_PARTIAL();
Fecode++;
@ -2785,61 +2739,13 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
}
else
{
int lgb, rgb;
GETCHARINCTEST(fc, Feptr);
lgb = UCD_GRAPHBREAK(fc);
while (Feptr < mb->end_subject)
{
int len = 1;
if (!utf) fc = *Feptr; else { GETCHARLEN(fc, Feptr, len); }
rgb = UCD_GRAPHBREAK(fc);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = Feptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(fc, bptr);
}
else
#endif
fc = *bptr;
if (UCD_GRAPHBREAK(fc) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
Feptr += len;
}
Feptr = PRIV(extuni)(fc, Feptr, mb->start_subject,
mb->end_subject, utf, NULL);
}
CHECK_PARTIAL();
}
}
else
#endif /* SUPPORT_UNICODE */
@ -3593,56 +3499,9 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
}
else
{
int lgb, rgb;
GETCHARINCTEST(fc, Feptr);
lgb = UCD_GRAPHBREAK(fc);
while (Feptr < mb->end_subject)
{
int len = 1;
if (!utf) fc = *Feptr; else { GETCHARLEN(fc, Feptr, len); }
rgb = UCD_GRAPHBREAK(fc);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = Feptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(fc, bptr);
}
else
#endif
fc = *bptr;
if (UCD_GRAPHBREAK(fc) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
Feptr += len;
}
Feptr = PRIV(extuni)(fc, Feptr, mb->start_subject, mb->end_subject,
utf, NULL);
}
CHECK_PARTIAL();
}
@ -4167,56 +4026,9 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
}
else
{
int lgb, rgb;
GETCHARINCTEST(fc, Feptr);
lgb = UCD_GRAPHBREAK(fc);
while (Feptr < mb->end_subject)
{
int len = 1;
if (!utf) fc = *Feptr; else { GETCHARLEN(fc, Feptr, len); }
rgb = UCD_GRAPHBREAK(fc);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
/* Not breaking between Regional Indicators is allowed only if
there are an even number of preceding RIs. */
if (lgb == ucp_gbRegionalIndicator &&
rgb == ucp_gbRegionalIndicator)
{
int ricount = 0;
PCRE2_SPTR bptr = Feptr - 1;
#ifdef SUPPORT_UNICODE
if (utf) BACKCHAR(bptr);
#endif
/* bptr is pointing to the left-hand character */
while (bptr > mb->start_subject)
{
bptr--;
#ifdef SUPPORT_UNICODE
if (utf)
{
BACKCHAR(bptr);
GETCHAR(fc, bptr);
}
else
#endif
fc = *bptr;
if (UCD_GRAPHBREAK(fc) != ucp_gbRegionalIndicator) break;
ricount++;
}
if ((ricount & 1) != 0) break; /* Grapheme break required */
}
/* If Extend follows E_Base[_GAZ] do not update lgb; this allows
any number of Extend before a following E_Modifier. */
if (rgb != ucp_gbExtend ||
(lgb != ucp_gbE_Base && lgb != ucp_gbE_Base_GAZ))
lgb = rgb;
Feptr += len;
}
Feptr = PRIV(extuni)(fc, Feptr, mb->start_subject, mb->end_subject,
utf, NULL);
}
CHECK_PARTIAL();
}