[R] What is wrong with this code?

[Cable, Samuel B Civ USAF AFMC AFRL/RVBXI]

> > Anyway, I still wouldn't mind some advice on character
> > matching.
> > Thanks.
> >
> If so we need a reproducible example of what you are doing.

OK, let's say I have three strings.  Str1="abc".  Str2="abcd".
Str3="efgh".

I want to compare Str1 and Str2 in such a way that R detects that Str2
indeed contains Str1.  I want something that returns a "TRUE" value.
Then I want to compare Str1 and Str3 so that R detects that Str3 does
not contain Str1.  I don't want it to give me an error because it can't
find Str1.  I just want to get a "FALSE" value.  Is there a way to do
this that's less messy than what I came up with?  Thanks again.