Re: ensure a VPATH build

[Andreas Schwab]

Keith Marshall <address@hidden> writes:

> Where is it *ever* necessary?  The backticks themselves serve as quotes.

This is wrong.  The expansion of a command substitution is subject to word
splitting and filename expansion, unless quoted.  Especially the latter is
most serious.

> A string such as
>    "a string `echo with an embedded backquoted` substring"
>
> can always be safely rewritten as
>    "a string "`echo with an embedded backquoted`" substring"

$ echo `echo 'a  b'`
a b
$ echo "`echo 'a  b'`"
a  b

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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