Variable substitition

[Maarten Litmaath]

In article <8393 at star.cs.vu.nl> I wrote:
)...
)# Instead of ``echo "$foo"'' you could use the portable echo hack:
)#
)#	expr "$foo" : '\(.*\)'

Better make that:

	expr "xxx$foo" : 'xxx\(.*\)'

Then you won't get ``expr: syntax error'' if $foo equals `match' or `+'
or `-' or...  :-(
Grrrrr!
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