Re: doc: Mention two more shell portability problems

Zack Weinberg <[email protected]>
Newsgroups gmane.comp.sysutils.autoconf.patches
Message-ID <CAKCAbMg2WB9rYVaVPgQBcqi2WJdVMgR76TOp3iYSdCYmeaeoPw@mail.gmail.com> 
I verified both of these behaviors and merged the patch, with two
slight changes to the text:

 - it is specifically Solaris 10 /bin/sh that executes redirected
compound commands in a subshell; ksh (aka /usr/xpg4/bin/sh) doesn't.
 - the latest version of dash also doesn't support file descriptors
larger than 9, so I took out the version number

zw
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