diff options
Diffstat (limited to 'posix/regex.h')
| -rw-r--r-- | posix/regex.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/posix/regex.h b/posix/regex.h index 1ab3e243a7..c76005332d 100644 --- a/posix/regex.h +++ b/posix/regex.h @@ -175,6 +175,10 @@ typedef unsigned long int reg_syntax_t; 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) + /* 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 @@ -229,7 +233,7 @@ 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 |