1 files changed, 3 insertions, 0 deletions

diff --git a/src/keyboard.c b/src/keyboard.c
index 42afeb3f0d0..d17390433ed 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -2545,6 +2545,9 @@ read_avail_input (expected)
         /* Formerly simply reported no input, but that sometimes led to
            a failure of Emacs to terminate.
            SIGHUP seems appropriate if we can't reach the terminal.  */
+        /* ??? Is it really right to send the signal just to this process
+           rather than to the whole process group?
+           Perhaps on systems with FIONREAD Emacs is alone in its group.  */
         kill (getpid (), SIGHUP);
       if (nread == 0)
         return 0;