(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.

diff --git a/src/coding.c b/src/coding.c
index b7bc5e6b4f24152c0df2e6f0b2f10f3de7a7e0cb..e285e1c27f361227c94e3acd6e8c13c7e16d1da5 100644 (file)
--- 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;