(DECODE_ISO_CHARACTER): While decoding two-byte code,

if the sencond byte is invalid, produce the first byte as is.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/coding.c b/src/coding.c
index 6c537df830c..81fda21f1cb 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -884,21 +884,21 @@ detect_coding_iso2022 (src, src_end)
           *dst++ = 0xFF;                                                \
         coding->composing += 2;                                         \
       }                                                                 \
-    if ((charset) >= 0)                                                 \
+    if (charset_alt >= 0)                                               \
       {                                                                 \
-        if (CHARSET_DIMENSION (charset) == 2)                           \
+        if (CHARSET_DIMENSION (charset_alt) == 2)                       \
           {                                                             \
             ONE_MORE_BYTE (c2);                                         \
             if (iso_code_class[(c2) & 0x7F] != ISO_0x20_or_0x7F         \
                 && iso_code_class[(c2) & 0x7F] != ISO_graphic_plane_0)  \
               {                                                         \
                 src--;                                                  \
-                c2 = ' ';                                               \
+                charset_alt = CHARSET_ASCII;                            \
               }                                                         \
           }                                                             \
         if (!NILP (translation_table)                                   \
             && ((c_alt = translate_char (translation_table,             \
-                                         -1, (charset), c1, c2)) >= 0)) \
+                                         -1, charset_alt, c1, c2)) >= 0)) \
           SPLIT_CHAR (c_alt, charset_alt, c1, c2);                      \
       }                                                                 \
     if (charset_alt == CHARSET_ASCII || charset_alt < 0)                \