Patch 7.4.241
Problem: The string returned by submatch() does not distinguish between a
NL from a line break and a NL that stands for a NUL character.
Solution: Add a second argument to return a list. (ZyX)
Files: runtime/doc/eval.txt, src/eval.c, src/proto/regexp.pro,
src/regexp.c, src/testdir/test79.in, src/testdir/test79.ok,
src/testdir/test80.in, src/testdir/test80.ok
*** ../vim-7.4.240/runtime/doc/eval.txt 2014-04-02 12:12:04.151981514 +0200
--- runtime/doc/eval.txt 2014-04-02 17:56:51.163696948 +0200
***************
*** 1989,1995 ****
Number last index of {needle} in {haystack}
strtrans( {expr}) String translate string to make it printable
strwidth( {expr}) Number display cell length of the String {expr}
! submatch( {nr}) String specific match in ":s" or
substitute()
substitute( {expr}, {pat}, {sub}, {flags})
String all {pat} in {expr} replaced with {sub}
synID( {lnum}, {col}, {trans}) Number syntax ID at {lnum} and {col}
--- 1990,1997 ----
Number last index of {needle} in {haystack}
strtrans( {expr}) String translate string to make it printable
strwidth( {expr}) Number display cell length of the String {expr}
! submatch( {nr}[, {list}]) String or List
! specific match in ":s" or substitute()
substitute( {expr}, {pat}, {sub}, {flags})
String all {pat} in {expr} replaced with {sub}
synID( {lnum}, {col}, {trans}) Number syntax ID at {lnum} and {col}
***************
*** 5784,5795 ****
Ambiguous, this function's return value depends on 'ambiwidth'.
Also see |strlen()|, |strdisplaywidth()| and |strchars()|.
! submatch({nr}) *submatch()*
Only for an expression in a |:substitute| command or
substitute() function.
Returns the {nr}'th submatch of the matched text. When {nr}
is 0 the whole matched text is returned.
Also see |sub-replace-expression|.
Example: >
:s/\d\+/\=submatch(0) + 1/
< This finds the first number in the line and adds one to it.
--- 5798,5820 ----
Ambiguous, this function's return value depends on 'ambiwidth'.
Also see |strlen()|, |strdisplaywidth()| and |strchars()|.
! submatch({nr}[, {list}]) *submatch()*
Only for an expression in a |:substitute| command or
substitute() function.
Returns the {nr}'th submatch of the matched text. When {nr}
is 0 the whole matched text is returned.
+ Note that a NL in the string can stand for a line break of a
+ multi-line match or a NUL character in the text.
Also see |sub-replace-expression|.
+
+ If {list} is present and non-zero then submatch() returns
+ a list of strings, similar to |getline()| with two arguments.
+ NL characters in the text represent NUL characters in the
+ text.
+ Only returns more than one item for |:substitute|, inside
+ |substitute()| this list will always contain one or zero
+ items, since there are no real line breaks.
+
Example: >
:s/\d\+/\=submatch(0) + 1/
< This finds the first number in the line and adds one to it.
*** ../vim-7.4.240/src/eval.c 2014-04-02 12:12:04.159981514 +0200
--- src/eval.c 2014-04-02 18:16:33.011680690 +0200
***************
*** 8129,8135 ****
{"strridx", 2, 3, f_strridx},
{"strtrans", 1, 1, f_strtrans},
{"strwidth", 1, 1, f_strwidth},
! {"submatch", 1, 1, f_submatch},
{"substitute", 4, 4, f_substitute},
{"synID", 3, 3, f_synID},
{"synIDattr", 2, 3, f_synIDattr},
--- 8129,8135 ----
{"strridx", 2, 3, f_strridx},
{"strtrans", 1, 1, f_strtrans},
{"strwidth", 1, 1, f_strwidth},
! {"submatch", 1, 2, f_submatch},
{"substitute", 4, 4, f_substitute},
{"synID", 3, 3, f_synID},
{"synIDattr", 2, 3, f_synIDattr},
***************
*** 17890,17898 ****
typval_T *argvars;
typval_T *rettv;
{
! rettv->v_type = VAR_STRING;
! rettv->vval.v_string =
! reg_submatch((int)get_tv_number_chk(&argvars[0], NULL));
}
/*
--- 17890,17921 ----
typval_T *argvars;
typval_T *rettv;
{
! int error = FALSE;
! char_u **match;
! char_u **s;
! listitem_T *li;
! int no;
! int retList = 0;
!
! no = (int)get_tv_number_chk(&argvars[0], &error);
! if (error)
! return;
! error = FALSE;
! if (argvars[1].v_type != VAR_UNKNOWN)
! retList = get_tv_number_chk(&argvars[1], &error);
! if (error)
! return;
!
! if (retList == 0)
! {
! rettv->v_type = VAR_STRING;
! rettv->vval.v_string = reg_submatch(no);
! }
! else
! {
! rettv->v_type = VAR_LIST;
! rettv->vval.v_list = reg_submatch_list(no);
! }
}
/*
*** ../vim-7.4.240/src/proto/regexp.pro 2013-08-10 13:37:24.000000000 +0200
--- src/proto/regexp.pro 2014-04-02 18:19:12.415678498 +0200
***************
*** 10,15 ****
--- 10,16 ----
int vim_regsub __ARGS((regmatch_T *rmp, char_u *source, char_u *dest, int
copy, int magic, int backslash));
int vim_regsub_multi __ARGS((regmmatch_T *rmp, linenr_T lnum, char_u *source,
char_u *dest, int copy, int magic, int backslash));
char_u *reg_submatch __ARGS((int no));
+ list_T *reg_submatch_list __ARGS((int no));
regprog_T *vim_regcomp __ARGS((char_u *expr_arg, int re_flags));
void vim_regfree __ARGS((regprog_T *prog));
int vim_regexec __ARGS((regmatch_T *rmp, char_u *line, colnr_T col));
*** ../vim-7.4.240/src/regexp.c 2014-03-23 15:12:29.931264336 +0100
--- src/regexp.c 2014-04-02 18:59:34.431645181 +0200
***************
*** 7897,7902 ****
--- 7897,7981 ----
return retval;
}
+
+ /*
+ * Used for the submatch() function with the optional non-zero argument: get
+ * the list of strings from the n'th submatch in allocated memory with NULs
+ * represented in NLs.
+ * Returns a list of allocated strings. Returns NULL when not in a ":s"
+ * command, for a non-existing submatch and for any error.
+ */
+ list_T *
+ reg_submatch_list(no)
+ int no;
+ {
+ char_u *s;
+ linenr_T slnum;
+ linenr_T elnum;
+ colnr_T scol;
+ colnr_T ecol;
+ int i;
+ list_T *list;
+ int error = FALSE;
+
+ if (!can_f_submatch || no < 0)
+ return NULL;
+
+ if (submatch_match == NULL)
+ {
+ slnum = submatch_mmatch->startpos[no].lnum;
+ elnum = submatch_mmatch->endpos[no].lnum;
+ if (slnum < 0 || elnum < 0)
+ return NULL;
+
+ scol = submatch_mmatch->startpos[no].col;
+ ecol = submatch_mmatch->endpos[no].col;
+
+ list = list_alloc();
+ if (list == NULL)
+ return NULL;
+
+ s = reg_getline_submatch(slnum) + scol;
+ if (slnum == elnum)
+ {
+ if (list_append_string(list, s, ecol - scol) == FAIL)
+ error = TRUE;
+ }
+ else
+ {
+ if (list_append_string(list, s, -1) == FAIL)
+ error = TRUE;
+ for (i = 1; i < elnum - slnum; i++)
+ {
+ s = reg_getline_submatch(slnum + i);
+ if (list_append_string(list, s, -1) == FAIL)
+ error = TRUE;
+ }
+ s = reg_getline_submatch(elnum);
+ if (list_append_string(list, s, ecol) == FAIL)
+ error = TRUE;
+ }
+ }
+ else
+ {
+ s = submatch_match->startp[no];
+ if (s == NULL || submatch_match->endp[no] == NULL)
+ return NULL;
+ list = list_alloc();
+ if (list == NULL)
+ return NULL;
+ if (list_append_string(list, s,
+ (int)(submatch_match->endp[no] - s)) == FAIL)
+ error = TRUE;
+ }
+
+ if (error)
+ {
+ list_free(list, TRUE);
+ return NULL;
+ }
+ return list;
+ }
#endif
static regengine_T bt_regengine =
*** ../vim-7.4.240/src/testdir/test79.in 2013-04-13 11:16:38.000000000
+0200
--- src/testdir/test79.in 2014-04-02 17:51:01.807701753 +0200
***************
*** 181,190 ****
--- 181,192 ----
:set cpo&
/^TEST/
j:s/A\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)/\=submatch(0) .
submatch(9) . submatch(8) . submatch(7) . submatch(6) . submatch(5) .
submatch(4) . submatch(3) . submatch(2) . submatch(1)/
+ j:s/B\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)\(.\)/\=string([submatch(0, 1),
submatch(9, 1), submatch(8, 1), submatch(7, 1), submatch(6, 1), submatch(5, 1),
submatch(4, 1), submatch(3, 1), submatch(2, 1), submatch(1, 1)])/
ENDTEST
TEST_5:
A123456789
+ B123456789
STARTTEST
:set magic&
***************
*** 209,214 ****
--- 211,219 ----
/^TEST_7/
j:s/A./\=submatch(0)/
j:s/B./\=submatch(0)/
+ j:s/C./\=strtrans(string(submatch(0, 1)))/
+ j:s/D.\nD/\=strtrans(string(submatch(0, 1)))/
+ j:s/E\_.\{-}E/\=strtrans(string(submatch(0, 1)))/
/^Q$
:s/Q[^\n]Q/\=submatch(0)."foobar"/
:" Avoid :s error breaks dotest map on Windows.
***************
*** 217,226 ****
--- 222,240 ----
TEST_7:
A
A
B
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