Optimize ASCII file reading with EOL format detection and decoding.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/coding.h b/src/coding.h
index c13567c3d53..d40209be68f 100644
--- a/src/coding.h
+++ b/src/coding.h
@@ -440,9 +440,13 @@ struct coding_system
   /* How may heading bytes we can skip for decoding.  This is set to
      -1 in setup_coding_system, and updated by detect_coding.  So,
      when this is equal to the byte length of the text being
-     converted, we can skip the actual conversion process.  */
+     converted, we can skip the actual conversion process except for
+     the eol format.  */
   ptrdiff_t head_ascii;
 
+  /* Used internally in coding.c.  See the comment of detect_ascii.  */
+  int eol_seen;
+
   /* The following members are set by encoding/decoding routine.  */
   ptrdiff_t produced, produced_char, consumed, consumed_char;