diff options
| -rw-r--r-- | NEWS | 5 | ||||
| -rw-r--r-- | src/dfasearch.c | 2 |
2 files changed, 6 insertions, 1 deletions
@@ -14,7 +14,10 @@ GNU grep NEWS -*- outline -*- Regular expressions with stray backslashes now cause warnings, as their unspecified behavior can lead to unexpected results. For example, '\a' and 'a' are not always equivalent - <https://bugs.gnu.org/39768>. The warnings are intended as a + <https://bugs.gnu.org/39768>. Similarly, regular expressions or + subexpressions that start with a repetition operator now also cause + warnings due to their unspecified behavior; for example, *a(+b|{1}c) + now has three reasons to warn. The warnings are intended as a transition aid; they are likely to be errors in future releases. Regular expressions like [:space:] are now errors even if diff --git a/src/dfasearch.c b/src/dfasearch.c index 7547a8a3..8d832f0c 100644 --- a/src/dfasearch.c +++ b/src/dfasearch.c @@ -197,6 +197,8 @@ GEAcompile (char *pattern, idx_t size, reg_syntax_t syntax_bits, if (match_icase) syntax_bits |= RE_ICASE; int dfaopts = (DFA_CONFUSING_BRACKETS_ERROR | DFA_STRAY_BACKSLASH_WARN + | DFA_PLUS_WARN + | (syntax_bits & RE_CONTEXT_INDEP_OPS ? DFA_STAR_WARN : 0) | (eolbyte ? 0 : DFA_EOL_NUL)); dfasyntax (dc->dfa, &localeinfo, syntax_bits, dfaopts); bool bs_safe = !localeinfo.multibyte | localeinfo.using_utf8; |