--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2011-01-09  Karl Heuer  <kwzh@gnu.org>
+
+	useless-if-before-free: fix typo in --help and make the internal,
+	automatic version date update process work once again.
+	--help output contained a NUL character instead of the
+	backslash-zero that was intended.  Also, the "must lie within
+	the first 8 lines" line is on line 9, and hence not getting
+	automatically updated.
+	* build-aux/useless-if-before-free: Fix the former by adding a
+	backslash, and the latter by condensing the three lines of what-it-does
+	to a single line, leaving one line of slack for the future.
+
 2011-01-09  Bruno Haible  <bruno@clisp.org>
 
 	uniwidth/width: Fix width of U+1D173..U+1D17A.

--- a/build-aux/useless-if-before-free
+++ b/build-aux/useless-if-before-free
@@ -2,11 +2,9 @@
   & eval 'exec perl -wST "$0" $argv:q'
     if 0;
 # Detect instances of "if (p) free (p);".
-# Likewise for "if (p != NULL) free (p);".  And with braces.
-# Also detect "if (NULL != p) free (p);".
-# And with 0 in place of NULL.
+# Likewise "if (p != 0)", "if (0 != p)", or with NULL; and with braces.
 
-my $VERSION = '2009-04-16 15:57'; # UTC
+my $VERSION = '2011-01-09 01:39'; # UTC
 # The definition above must lie within the first 8 lines in order
 # for the Emacs time-stamp write hook (at end) to update it.
 # If you change this file with Emacs, please let the write hook
@@ -63,7 +61,7 @@
 
 OPTIONS:
 
-   --list       print only the name of each matching FILE (\0-terminated)
+   --list       print only the name of each matching FILE (\\0-terminated)
    --name=N     add name N to the list of \`free\'-like functions to detect;
                   may be repeated