Re: is expr's \? regex metachar working?

[Clark O. Morgan]

In article <address@hidden>, address@hidden says...
>|> $ ./expr "abcdef" : '.*u\?'
>|> 6
>|> $ ./expr "abcdef" : '.*b\?'
>|> 6                           <--- this looks wrong
>
>No, this is correct.  The '.*' regexp matches the maximum possible length,
>which is all 6 characters.  Since b is optional, it does not cause a match
>failure.


Then, it appears that expr's \? is of little value -- can't detect the
difference between a match or a nonmatch (as shown above).