Change parameter name to match comment.

[gnulib.git] / lib / regex.h

diff --git a/lib/regex.h b/lib/regex.h
index 53bdd8f..25c9505 100644 (file)
--- a/lib/regex.h
+++ b/lib/regex.h
@@ -16,7 +16,7 @@
 
    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
 
 #ifndef _REGEX_H
 #define _REGEX_H 1
@@ -169,6 +169,19 @@ typedef unsigned long int reg_syntax_t;
    If not set, then case is significant.  */
 #define RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
 
+/* This bit is used internally like RE_CONTEXT_INDEP_ANCHORS but only
+   for ^, because it is difficult to scan the regex backwards to find
+   whether ^ should be special.  */
+#define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
+
+/* If this bit is set, then \{ cannot be first in an bre or
+   immediately after an alternation or begin-group operator.  */
+#define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
+
+/* If this bit is set, then no_sub will be set to 1 during
+   re_compile_pattern.  */
+#define RE_NO_SUB (RE_CONTEXT_INVALID_DUP << 1)
+
 /* This global variable defines the particular regexp syntax to use (for
    some interfaces).  When a regexp is compiled, the syntax used is
    stored in the pattern buffer, so changing this does not affect
@@ -193,7 +206,7 @@ extern reg_syntax_t re_syntax_options;
    & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS           \
        | RE_CONTEXT_INVALID_OPS ))
 
-#define RE_SYNTAX_POSIX_AWK                                            \
+#define RE_SYNTAX_POSIX_AWK                                            \
   (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS             \
    | RE_INTERVALS          | RE_NO_GNU_OPS)
 
@@ -223,7 +236,7 @@ extern reg_syntax_t re_syntax_options;
    | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
 
 #define RE_SYNTAX_POSIX_BASIC                                          \
-  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
+  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
 
 /* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
    RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
@@ -288,6 +301,10 @@ extern reg_syntax_t re_syntax_options;
 /* Like REG_NOTBOL, except for the end-of-line.  */
 #define REG_NOTEOL (1 << 1)
 
+/* Use PMATCH[0] to delimit the start and end of the search in the
+   buffer.  */
+#define REG_STARTEND (1 << 2)
+
 
 /* If any error codes are removed, changed, or added, update the
    `re_error_msg' table in regex.c.  */
@@ -303,7 +320,7 @@ typedef enum
   /* POSIX regcomp return error codes.  (In the order listed in the
      standard.)  */
   REG_BADPAT,          /* Invalid pattern.  */
-  REG_ECOLLATE,                /* Not implemented.  */
+  REG_ECOLLATE,                /* Inalid collating element.  */
   REG_ECTYPE,          /* Invalid character class name.  */
   REG_EESCAPE,         /* Trailing backslash.  */
   REG_ESUBREG,         /* Invalid back reference.  */