diff options
Diffstat (limited to 're.c')
| -rw-r--r-- | re.c | 12 |
1 files changed, 9 insertions, 3 deletions
@@ -1783,7 +1783,8 @@ rb_reg_s_union(VALUE self, VALUE args0) else { int i; VALUE source = rb_str_buf_new(0); - VALUE enc0 = rb_obj_encoding(rb_ary_entry(args0, 0)); + int mbs = Qfalse; + rb_encoding *enc = 0; for (i = 0; i < argc; i++) { volatile VALUE v; @@ -1792,12 +1793,17 @@ rb_reg_s_union(VALUE self, VALUE args0) rb_str_buf_cat2(source, "|"); v = rb_check_regexp_type(e); if (!NIL_P(v)) { - rb_enc_check(enc0, v); v = rb_reg_to_s(v); } else { v = rb_reg_s_quote(Qnil, e); - rb_enc_check(enc0, rb_obj_encoding(v)); + } + if (mbs || rb_enc_str_coderange(v) != ENC_CODERANGE_SINGLE) { + if (!enc) enc = rb_enc_get(v); + else if (mbs && enc != rb_enc_get(v)) { + rb_raise(rb_eArgError, "regexp encodings differ"); + } + mbs = Qtrue; } rb_str_append(source, v); } |