(detect_coding_iso2022): While checking a byte sequence

for CODING_CATEGORY_MASK_ISO_8_2, if we read one extra byte, check
it in the normal loop.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/coding.c b/src/coding.c
index b7bc5e6b4f2..e285e1c27f3 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -1349,6 +1349,7 @@ detect_coding_iso2022 (src, src_end, multibytep)
   while (mask && src < src_end)
     {
       ONE_MORE_BYTE_CHECK_MULTIBYTE (c, multibytep);
+    retry:
       switch (c)
         {
         case ISO_CODE_ESC:
@@ -1523,6 +1524,8 @@ detect_coding_iso2022 (src, src_end, multibytep)
                   && mask & CODING_CATEGORY_MASK_ISO_8_2)
                 {
                   int i = 1;
+
+                  c = -1;
                   while (src < src_end)
                     {
                       ONE_MORE_BYTE_CHECK_MULTIBYTE (c, multibytep);
@@ -1535,6 +1538,9 @@ detect_coding_iso2022 (src, src_end, multibytep)
                     mask &= ~CODING_CATEGORY_MASK_ISO_8_2;
                   else
                     mask_found |= CODING_CATEGORY_MASK_ISO_8_2;
+                  if (c >= 0)
+                    /* This means that we have read one extra byte.  */
+                    goto retry;
                 }
             }
           break;