kazu	2017-05-03 11:02:50 +0900 (Wed, 03 May 2017)

  New Revision: 58548

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58548

  Log:
    Use `dd` instead of `head -c`
    
    [Bug #13538] [ruby-dev:50106]

  Modified files:
    trunk/configure.in
Index: configure.in
===================================================================
--- configure.in	(revision 58547)
+++ configure.in	(revision 58548)
@@ -4737,7 +4737,7 @@ AS_IF([test "`echo abcdefg hijklmno | fo https://github.com/ruby/ruby/blob/trunk/configure.in#L4737
 AS_REQUIRE_SHELL_FN([config_summary],
     [AS_FUNCTION_DESCRIBE([config_summary], [NAME, VAL], [configuration summary])],
     [AS_IF([test -z "$2"], [], [
-	AS_ECHO_N(["   * $1:                     "]) | head -c26
+	AS_ECHO_N(["   * $1:                     "]) | dd bs=1 count=26 2>/dev/null
 	AS_IF([test "$FOLD"], [
 	    echo "$2" | fold -s -w50 |
 	    sed '1!s/^/                          /;$!s/$/\\/'

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