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hush: handle empty execs

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Sometimes variable expansions yield empty strings, and if they happen to
be a command someone wants to run like `$foo`, then hush currently
segfaults.  So handle `` and $().

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger
2009-10-18 01:11:45 -04:00
parent 69d9edc6f8
commit 28736c36ca
3 changed files with 36 additions and 0 deletions
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shell/hush_test/hush-psubst/emptytick.right Normal file
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