diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/parser/scansup.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/backend/parser/scansup.c b/src/backend/parser/scansup.c index 8f6febc694e..f20f3b62a82 100644 --- a/src/backend/parser/scansup.c +++ b/src/backend/parser/scansup.c @@ -132,8 +132,10 @@ downcase_truncate_identifier(const char *ident, int len, bool warn) { char *result; int i; + bool enc_is_single_byte; result = palloc(len + 1); + enc_is_single_byte = pg_database_encoding_max_length() == 1; /* * SQL99 specifies Unicode-aware case normalization, which we don't yet @@ -141,8 +143,8 @@ downcase_truncate_identifier(const char *ident, int len, bool warn) * locale-aware translation. However, there are some locales where this * is not right either (eg, Turkish may do strange things with 'i' and * 'I'). Our current compromise is to use tolower() for characters with - * the high bit set, and use an ASCII-only downcasing for 7-bit - * characters. + * the high bit set, as long as they aren't part of a multi-byte character, + * and use an ASCII-only downcasing for 7-bit characters. */ for (i = 0; i < len; i++) { @@ -150,7 +152,7 @@ downcase_truncate_identifier(const char *ident, int len, bool warn) if (ch >= 'A' && ch <= 'Z') ch += 'a' - 'A'; - else if (IS_HIGHBIT_SET(ch) && isupper(ch)) + else if (enc_is_single_byte && IS_HIGHBIT_SET(ch) && isupper(ch)) ch = tolower(ch); result[i] = (char) ch; } |