1 files changed, 4 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index 7438fc0d337..020a1401575 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -5103,7 +5103,10 @@ detect_coding_charset (coding, detect_info)
   valids = AREF (attrs, coding_attr_charset_valids);
   name = CODING_ID_NAME (coding->id);
   if (VECTORP (Vlatin_extra_code_table)
-      && strcmp ((char *) SDATA (SYMBOL_NAME (name)), "iso-8859-") == 0)
+      && (strncmp ((char *) SDATA (SYMBOL_NAME (name)),
+                   "iso-8859-", sizeof ("iso-8859-") - 1) == 0
+          || strncmp ((char *) SDATA (SYMBOL_NAME (name)),
+                      "iso-latin-", sizeof ("iso-latin-") - 1) == 0))
     check_latin_extra = 1;
   if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs)))
     src += head_ascii;