diff options
Diffstat (limited to 'string.c')
| -rw-r--r-- | string.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -832,10 +832,10 @@ rb_str_substr(VALUE str, long beg, long len) if (len > -beg) len = -beg; if (-beg * rb_enc_mbmaxlen(enc) < RSTRING_LEN(str) / 8) { beg = -beg; - while (len++ < beg && (e = rb_enc_prev_char(s, e, enc)) != 0); + while (beg-- > len && (e = rb_enc_prev_char(s, e, enc)) != 0); p = e; if (!p) return Qnil; - while (beg-- > 0 && (p = rb_enc_prev_char(s, p, enc)) != 0); + while (len-- > 0 && (p = rb_enc_prev_char(s, p, enc)) != 0); if (!p) return Qnil; len = e - p; goto sub; |