diff options
author | jilles <jilles@FreeBSD.org> | 2013-02-03 15:54:57 +0000 |
---|---|---|
committer | jilles <jilles@FreeBSD.org> | 2013-02-03 15:54:57 +0000 |
commit | 6fa139d56eac8251b9a64c249c8e6fc8131f405c (patch) | |
tree | 798963ecfeaa133433ad99b27533d07fa1521c76 /bin/sh/expand.h | |
parent | aa08976cf0559eb6c97a1886ea652e0f839759e5 (diff) | |
download | FreeBSD-src-6fa139d56eac8251b9a64c249c8e6fc8131f405c.zip FreeBSD-src-6fa139d56eac8251b9a64c249c8e6fc8131f405c.tar.gz |
sh: Expand here documents in the current process.
Expand here documents at the same point other redirections are expanded but
use a non-fork subshell environment (like simple command substitutions) for
compatibility. Substitition errors result in an empty here document like
before.
As a result, a fork is avoided for short (<4K) expanded here documents.
Unexpanded here documents (with quoted end marker after <<) are not affected
by this change. They already only forked when >4K.
Side effects:
* Order of expansion is slightly different.
* Slow expansions are not executed in parallel with the redirected command.
* A non-fork subshell environment is subtly different from a forked process.
Diffstat (limited to 'bin/sh/expand.h')
-rw-r--r-- | bin/sh/expand.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/bin/sh/expand.h b/bin/sh/expand.h index 8114e2b..8d44321 100644 --- a/bin/sh/expand.h +++ b/bin/sh/expand.h @@ -57,7 +57,6 @@ struct arglist { union node; -void expandhere(union node *, int); void expandarg(union node *, struct arglist *, int); void expari(int); void rmescapes(char *); |