Patch 7.4.293
Problem: It is not possible to ignore composing characters at a specific
point in a pattern.
Solution: Add the %C item.
Files: src/regexp.c, src/regexp_nfa.c, src/testdir/test95.in,
src/testdir/test95.ok, runtime/doc/pattern.txt
*** ../vim-7.4.292/src/regexp.c 2014-05-13 18:03:55.729737466 +0200
--- src/regexp.c 2014-05-13 18:27:08.725749659 +0200
***************
*** 244,249 ****
--- 244,250 ----
#define RE_MARK 207 /* mark cmp Match mark position */
#define RE_VISUAL 208 /* Match Visual area */
+ #define RE_COMPOSING 209 /* any composing characters */
/*
* Magic characters have a special meaning, they don't match literally.
***************
*** 2208,2213 ****
--- 2209,2218 ----
ret = regnode(RE_VISUAL);
break;
+ case 'C':
+ ret = regnode(RE_COMPOSING);
+ break;
+
/* \%[abc]: Emit as a list of branches, all ending at the last
* branch which matches nothing. */
case '[':
***************
*** 4710,4720 ****
status = RA_NOMATCH;
}
#ifdef FEAT_MBYTE
! /* Check for following composing character. */
if (status != RA_NOMATCH
&& enc_utf8
&& UTF_COMPOSINGLIKE(reginput, reginput + len)
! && !ireg_icombine)
{
/* raaron: This code makes a composing character get
* ignored, which is the correct behavior (sometimes)
--- 4715,4727 ----
status = RA_NOMATCH;
}
#ifdef FEAT_MBYTE
! /* Check for following composing character, unless %C
! * follows (skips over all composing chars). */
if (status != RA_NOMATCH
&& enc_utf8
&& UTF_COMPOSINGLIKE(reginput, reginput + len)
! && !ireg_icombine
! && OP(next) != RE_COMPOSING)
{
/* raaron: This code makes a composing character get
* ignored, which is the correct behavior (sometimes)
***************
*** 4791,4796 ****
--- 4798,4813 ----
status = RA_NOMATCH;
break;
#endif
+ case RE_COMPOSING:
+ #ifdef FEAT_MBYTE
+ if (enc_utf8)
+ {
+ /* Skip composing characters. */
+ while (utf_iscomposing(utf_ptr2char(reginput)))
+ mb_cptr_adv(reginput);
+ }
+ #endif
+ break;
case NOTHING:
break;
*** ../vim-7.4.292/src/regexp_nfa.c 2014-05-13 16:44:25.633695709 +0200
--- src/regexp_nfa.c 2014-05-13 19:25:58.285780556 +0200
***************
*** 81,86 ****
--- 81,87 ----
NFA_COMPOSING, /* Next nodes in NFA are part of the
composing multibyte char */
NFA_END_COMPOSING, /* End of a composing char in the
NFA */
+ NFA_ANY_COMPOSING, /* \%C: Any composing characters. */
NFA_OPT_CHARS, /* \%[abc] */
/* The following are used only in the postfix form, not in the NFA */
***************
*** 1418,1423 ****
--- 1419,1428 ----
EMIT(NFA_VISUAL);
break;
+ case 'C':
+ EMIT(NFA_ANY_COMPOSING);
+ break;
+
case '[':
{
int n;
***************
*** 2429,2434 ****
--- 2434,2440 ----
case NFA_MARK_LT: STRCPY(code, "NFA_MARK_LT "); break;
case NFA_CURSOR: STRCPY(code, "NFA_CURSOR "); break;
case NFA_VISUAL: STRCPY(code, "NFA_VISUAL "); break;
+ case NFA_ANY_COMPOSING: STRCPY(code, "NFA_ANY_COMPOSING "); break;
case NFA_STAR: STRCPY(code, "NFA_STAR "); break;
case NFA_STAR_NONGREEDY: STRCPY(code, "NFA_STAR_NONGREEDY "); break;
***************
*** 2967,2972 ****
--- 2973,2979 ----
case NFA_NLOWER_IC:
case NFA_UPPER_IC:
case NFA_NUPPER_IC:
+ case NFA_ANY_COMPOSING:
/* possibly non-ascii */
#ifdef FEAT_MBYTE
if (has_mbyte)
***************
*** 4152,4157 ****
--- 4159,4165 ----
continue;
case NFA_ANY:
+ case NFA_ANY_COMPOSING:
case NFA_IDENT:
case NFA_SIDENT:
case NFA_KWORD:
***************
*** 4395,4401 ****
switch (state->c)
{
case NFA_MATCH:
! nfa_match = TRUE;
break;
case NFA_SPLIT:
--- 4403,4409 ----
switch (state->c)
{
case NFA_MATCH:
! // nfa_match = TRUE;
break;
case NFA_SPLIT:
***************
*** 5151,5156 ****
--- 5159,5165 ----
case NFA_MATCH:
case NFA_MCLOSE:
+ case NFA_ANY_COMPOSING:
/* empty match works always */
return 0;
***************
*** 5573,5578 ****
--- 5582,5593 ----
{
case NFA_MATCH:
{
+ #ifdef FEAT_MBYTE
+ /* If the match ends before a composing characters and
+ * ireg_icombine is not set, that is not really a match. */
+ if (enc_utf8 && !ireg_icombine && utf_iscomposing(curc))
+ break;
+ #endif
nfa_match = TRUE;
copy_sub(&submatch->norm, &t->subs.norm);
#ifdef FEAT_SYN_HL
***************
*** 6120,6125 ****
--- 6135,6157 ----
}
break;
+ case NFA_ANY_COMPOSING:
+ /* On a composing character skip over it. Otherwise do
+ * nothing. Always matches. */
+ #ifdef FEAT_MBYTE
+ if (enc_utf8 && utf_iscomposing(curc))
+ {
+ add_off = clen;
+ }
+ else
+ #endif
+ {
+ add_here = TRUE;
+ add_off = 0;
+ }
+ add_state = t->state->out;
+ break;
+
/*
* Character classes like \a for alpha, \d for digit etc.
*/
***************
*** 6484,6495 ****
if (!result && ireg_ic)
result = MB_TOLOWER(c) == MB_TOLOWER(curc);
#ifdef FEAT_MBYTE
! /* If there is a composing character which is not being
! * ignored there can be no match. Match with composing
! * character uses NFA_COMPOSING above. */
! if (result && enc_utf8 && !ireg_icombine
! && clen != utf_char2len(curc))
! result = FALSE;
#endif
ADD_STATE_IF_MATCH(t->state);
break;
--- 6516,6525 ----
if (!result && ireg_ic)
result = MB_TOLOWER(c) == MB_TOLOWER(curc);
#ifdef FEAT_MBYTE
! /* If ireg_icombine is not set only skip over the character
! * itself. When it is set skip over composing characters. */
! if (result && enc_utf8 && !ireg_icombine)
! clen = utf_char2len(curc);
#endif
ADD_STATE_IF_MATCH(t->state);
break;
diff: ../vim-7.4.292/src/testdir/test95.insrc/testdir/test95.ok,: No such file
or directory
diff: src/testdir/test95.insrc/testdir/test95.ok,: No such file or directory
*** ../vim-7.4.292/runtime/doc/pattern.txt 2013-08-10 13:24:59.000000000
+0200
--- runtime/doc/pattern.txt 2014-05-13 18:59:57.621766895 +0200
***************
*** 545,550 ****
--- 545,551 ----
|/\%u| \%u \%u match specified multibyte character (eg \%u20ac)
|/\%U| \%U \%U match specified large multibyte character (eg
\%U12345678)
+ |/\%C| \%C \%C match any composing characters
Example matches ~
\<\I\i* or
***************
*** 1207,1218 ****
8. Composing characters
*patterns-composing*
*/\Z*
! When "\Z" appears anywhere in the pattern, composing characters are ignored.
! Thus only the base characters need to match, the composing characters may be
! different and the number of composing characters may differ. Only relevant
! when 'encoding' is "utf-8".
Exception: If the pattern starts with one or more composing characters, these
must match.
When a composing character appears at the start of the pattern of after an
item that doesn't include the composing character, a match is found at any
--- 1208,1225 ----
8. Composing characters
*patterns-composing*
*/\Z*
! When "\Z" appears anywhere in the pattern, all composing characters are
! ignored. Thus only the base characters need to match, the composing
! characters may be different and the number of composing characters may differ.
! Only relevant when 'encoding' is "utf-8".
Exception: If the pattern starts with one or more composing characters, these
must match.
+ */\%C*
+ Use "\%C" to skip any composing characters. For example, the pattern "a" does
+ not match in "càt" (where the a has the composing character 0x0300), but
+ "a\%C" does. Note that this does not match "cát" (where the á is character
+ 0xe1, it does not have a compositing character). It does match "cat" (where
+ the a is just an a).
When a composing character appears at the start of the pattern of after an
item that doesn't include the composing character, a match is found at any
*** ../vim-7.4.292/src/version.c 2014-05-13 18:03:55.729737466 +0200
--- src/version.c 2014-05-13 18:28:45.885750510 +0200
***************
*** 736,737 ****
--- 736,739 ----
{ /* Add new patch number below this line */
+ /**/
+ 293,
/**/
--
hundred-and-one symptoms of being an internet addict:
155. You forget to eat because you're too busy surfing the net.
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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