tweak comment

diff --git a/m4/fpending.m4 b/m4/fpending.m4
index a240f0a..a6e4338 100644 (file)
--- a/m4/fpending.m4
+++ b/m4/fpending.m4
@@ -5,8 +5,8 @@ dnl Using code from emacs, based on suggestions from Paul Eggert
 dnl and Ulrich Drepper.
 
 dnl Find out how to determine the number of pending output bytes on a stream.
-dnl Solaris provides __fpending.  On other systems, we have to grub around
-dnl in the FILE struct.
+dnl glibc (2.1.93 and newer) and Solaris provide __fpending.  On other systems,
+dnl we have to grub around in the FILE struct.
 
 AC_DEFUN(jm_FUNC_FPENDING,
 [