Re^3: what's the difference between "$@" and ${1+"$@"}

From the manual,

If the colon (:) is omitted from the above expressions, the shell only checks whether parameter is set or not.

Comment on Re^3: what's the difference between "$@" and ${1+"$@"}

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Re^4: what's the difference between "$@" and ${1+"$@"} by cadphile (Beadle) on Oct 11, 2007 at 22:39 UTC
Aha! Now it makes sense. Thanks everyone, especially Merlin, for your imparted wisdom... And I finally found a web page that discusses this, with some good background detail. http://www.in-ulm.de/~mascheck/various/bourne_args As an interesting side note, I wonder if anyone knows how to give this string (`${1+"$@"}`) to Google's search engine. As is, it doesn't work. I tried single-quoting it, and it still doesn't work. Cadphile...	[reply] [d/l]

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Re^4: what's the difference between "$@" and ${1+"$@"}
by cadphile (Beadle) on Oct 11, 2007 at 22:39 UTC

And I finally found a web page that discusses this, with some good background detail.

http://www.in-ulm.de/~mascheck/various/bourne_args

As an interesting side note, I wonder if anyone knows how to give this string (${1+"$@"}) to Google's search engine. As is, it doesn't work. I tried single-quoting it, and it still doesn't work.

Cadphile...

[reply]
[d/l]