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authorHerbert Xu <herbert@gondor.apana.org.au>2007-11-11 15:27:00 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2007-11-11 15:27:00 +0800
commitf4ee8c859c3d3fe6c5b540bffa6a0b6f320f8b3e (patch)
tree22b3d58db0458f6e4c03a30422c4708dc0e2ff7e /src/nodetypes
parent[EXPAND] Removed herefd hack (diff)
downloaddash-f4ee8c859c3d3fe6c5b540bffa6a0b6f320f8b3e.tar.gz
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[EXPAND] Expand here-documents in the current shell environment
Previously we always expanded here-documents in a subshell.  This is
contrary to the POSIX specification and how other shells behave.  What's
more this slows down many expansions due to the extra fork (however, it
must be said that it is possible for it speed up certain expansions by
running it simultaneously with the command on two CPUs).

This patch move the expansion into the current shell environment.

Test case:

	unset a
	cat <<- EOF > /dev/null
		${a=NOT}
	EOF
	echo ${a}BAD

Old result:

	BAD

New result:

	NOTBAD
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