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-rw-r--r--encoding.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/encoding.c b/encoding.c
index 5e8412a026..291070dd19 100644
--- a/encoding.c
+++ b/encoding.c
@@ -631,6 +631,10 @@ rb_enc_compatible(VALUE str1, VALUE str2)
if (!rb_enc_asciicompat(enc1) || !rb_enc_asciicompat(enc2)) {
return 0;
}
+ if (BUILTIN_TYPE(str2) == T_REGEXP && idx2 == ENCINDEX_US_ASCII)
+ return enc1;
+ if (BUILTIN_TYPE(str1) == T_REGEXP && idx1 == ENCINDEX_US_ASCII)
+ return enc2;
if (BUILTIN_TYPE(str1) != T_STRING) {
VALUE tmp = str1;
@@ -652,7 +656,7 @@ rb_enc_compatible(VALUE str1, VALUE str2)
if (cr2 == ENC_CODERANGE_7BIT) return enc1;
}
if (cr2 == ENC_CODERANGE_7BIT) {
- if (idx1 == 0) return enc2;
+ if (idx1 == ENCINDEX_ASCII) return enc2;
return enc1;
}
}