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Merge from trunk.
[gnu-emacs] / m4 / dup2.m4
2011-07-06 Glenn MorrisMerge from emacs-23; up to 2010-06-16T23:27:20Z!jay...
2011-06-25 Paul EggertMerge from trunk.
2011-06-25 Paul EggertUse gnulib's dup2 module instead of rolling our own.