docs: Posix now says "((cat))" isn't portable
commit89ce53b3a0baafaccef80c2462bbed799169c759
authorPaul Eggert <eggert@cs.ucla.edu>
Tue, 26 Oct 2010 23:12:46 +0000 (26 16:12 -0700)
committerPaul Eggert <eggert@cs.ucla.edu>
Tue, 26 Oct 2010 23:13:34 +0000 (26 16:13 -0700)
treeb10bf9a7152c94fd58d3babb5832c088c9a31d41
parentb42491e3237735a9d31f6578ca4887f8be6b6742
docs: Posix now says "((cat))" isn't portable

* doc/autoconf.texi (Parenthesis): Update documentation to reflect
what Posix 1003.1-2008 says about "((".
ChangeLog
doc/autoconf.texi