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-rw-r--r--re.c43
1 files changed, 42 insertions, 1 deletions
diff --git a/re.c b/re.c
index d3abf09..41364a1 100644
--- a/re.c
+++ b/re.c
@@ -349,6 +349,47 @@ rb_reg_inspect(re)
return rb_reg_desc(RREGEXP(re)->str, RREGEXP(re)->len, re);
}
+static VALUE
+rb_reg_to_s(re)
+ VALUE re;
+{
+ int all;
+ VALUE str = rb_str_buf_new2("(?");
+
+ rb_reg_check(re);
+
+ all = 1;
+ if (RREGEXP(re)->ptr->options & RE_OPTION_MULTILINE)
+ rb_str_buf_cat2(str, "m");
+ else
+ all = 0;
+ if (RREGEXP(re)->ptr->options & RE_OPTION_IGNORECASE)
+ rb_str_buf_cat2(str, "i");
+ else
+ all = 0;
+ if (RREGEXP(re)->ptr->options & RE_OPTION_EXTENDED)
+ rb_str_buf_cat2(str, "x");
+ else
+ all = 0;
+
+ if (!all) {
+ rb_str_buf_cat2(str, "-");
+ if (!(RREGEXP(re)->ptr->options & RE_OPTION_MULTILINE))
+ rb_str_buf_cat2(str, "m");
+ if (!(RREGEXP(re)->ptr->options & RE_OPTION_IGNORECASE))
+ rb_str_buf_cat2(str, "i");
+ if (!(RREGEXP(re)->ptr->options & RE_OPTION_EXTENDED))
+ rb_str_buf_cat2(str, "x");
+ }
+
+ rb_str_buf_cat2(str, ":");
+ rb_reg_expr_str(str, RREGEXP(re)->str, RREGEXP(re)->len);
+ rb_str_buf_cat2(str, ")");
+
+ OBJ_INFECT(str, re);
+ return str;
+}
+
static void
rb_reg_raise(s, len, err, re)
const char *s;
@@ -1455,7 +1496,7 @@ Init_Regexp()
rb_define_method(rb_cRegexp, "===", rb_reg_match, 1);
rb_define_method(rb_cRegexp, "~", rb_reg_match2, 0);
rb_define_method(rb_cRegexp, "match", rb_reg_match_m, 1);
- rb_define_method(rb_cRegexp, "to_s", rb_reg_inspect, 0);
+ rb_define_method(rb_cRegexp, "to_s", rb_reg_to_s, 0);
rb_define_method(rb_cRegexp, "inspect", rb_reg_inspect, 0);
rb_define_method(rb_cRegexp, "source", rb_reg_source, 0);
rb_define_method(rb_cRegexp, "casefold?", rb_reg_casefold_p, 0);