1 files changed, 11 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 57b36782697..c66963738bd 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,16 @@
 2013-01-19  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * fileio.c: Use O_APPEND to append.
+        This corresponds better to the natural interpretation of "append",
+        and avoids the need to open the output file twice, or to invoke
+        lseek when APPEND is neither nil nor a number.
+        This relies on POSIX 1003.1-1988 or later, which is OK nowadays.
+        (Fwrite_region): Simplify.  Use O_APPEND instead of opening the
+        file possibly twice, and lseeking to its end; this avoids the
+        need to lseek on non-regular files.  Do not use O_EXCL and O_TRUNC
+        at the same time: the combination is never needed and apparently
+        it doesn't work with DOS_NT.
+
         Fix size bug on DOS_NT introduced by CIFS workaround (Bug#13149).
         * fileio.c (Fwrite_region): Use O_BINARY in checking code, too.