diff options
Diffstat (limited to 'regex.c')
-rw-r--r-- | regex.c | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -185,6 +185,11 @@ static int current_mbctype = MBCTYPE_ASCII; #ifdef RUBY #include "util.h" +# re_warning(x) rb_warn(x) +#endif + +#ifndef re_warning +# define re_warning(x) #endif static void @@ -1464,6 +1469,7 @@ re_compile_pattern(pattern, size, bufp) if (p == p0 + 1) { if (p == pend) FREE_AND_RETURN(stackb, "invalid regular expression; empty character class"); + re_warning("character class has `]' without escape"); } else /* Stop if this isn't merely a ] inside a bracket @@ -1481,6 +1487,9 @@ re_compile_pattern(pattern, size, bufp) } had_char_class = 0; + if (c == '-') + re_warning("character class has `-' without escape"); + /* \ escapes characters when inside [...]. */ if (c == '\\') { PATFETCH_RAW(c); @@ -1678,6 +1687,7 @@ re_compile_pattern(pattern, size, bufp) c1++; while (c1--) PATUNFETCH; + re_warning("character class has `[' without escape"); SET_LIST_BIT(TRANSLATE_P()?translate['[']:'['); SET_LIST_BIT(TRANSLATE_P()?translate[':']:':'); had_char_class = 0; @@ -1685,6 +1695,8 @@ re_compile_pattern(pattern, size, bufp) } } else if (had_mbchar == 0 && (!current_mbctype || !had_num_literal)) { + if (c == '[') + re_warning("character class has `[' without escape"); SET_LIST_BIT(c); had_num_literal = 0; } |