many *.m4 files: improve m4 quoting 99% of this change was performed by running the following commands: git ls-files | grep '\.m4$' | xargs perl -pi \ -e 's/(AC_\w+\()([^[()]+?)([,)])/$1\[$2]$3/g;' \ -e 's/(AC_\w+\((?:\[[^,]+?\], ){1})([^,[()]+?)([,)])/$1\[$2]$3/g;' \ -e 's/(AC_\w+\((?:\[[^,]+?\], ){2})([^,[()]+?)([,)])/$1\[$2]$3/g;' \ -e 's/(AC_\w+\((?:\[[^,]+?\], ){3})([^,[()]+?)([,)])/$1\[$2]$3/g' perl -pi -e 's/\[\.\.\.\]/.../' m4/onceonly.m4 The remainder were to add Copyright dates, increment serial numbers, undo some changes in comments, exclude m4/intl.m4, and add quotes around the "1" in ",1" where the unusual spacing prohibited the above regexps from doing the job. For more details, see <http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/16175>.

# fatal-signal.m4 serial 7
dnl Copyright (C) 2003-2004, 2006, 2008, 2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_FATAL_SIGNAL],
[
  AC_REQUIRE([gt_TYPE_SIG_ATOMIC_T])
  AC_CHECK_HEADERS_ONCE([unistd.h])
  gl_PREREQ_SIG_HANDLER_H
])