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-rw-r--r--libguile/strings.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/libguile/strings.c b/libguile/strings.c
index 5c49e33d8..5f35617a2 100644
--- a/libguile/strings.c
+++ b/libguile/strings.c
@@ -1,5 +1,5 @@
/* Copyright (C) 1995, 1996, 1998, 2000, 2001, 2004, 2006,
- * 2008-2016 Free Software Foundation, Inc.
+ * 2008-2016, 2018 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@@ -2172,6 +2172,12 @@ scm_to_stringn (SCM str, size_t *lenp, const char *encoding,
if (!scm_is_string (str))
scm_wrong_type_arg_msg (NULL, 0, str, "string");
+
+ if (c_strcasecmp (encoding, "UTF-8") == 0)
+ /* This is the most common case--e.g., when calling libc bindings
+ while using a UTF-8 locale. */
+ return scm_to_utf8_stringn (str, lenp);
+
ilen = scm_i_string_length (str);
if (ilen == 0)