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Re: is expr's \? regex metachar working?
From: |
Clark O. Morgan |
Subject: |
Re: is expr's \? regex metachar working? |
Date: |
23 Aug 2001 07:34:02 -0700 |
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).
- is expr's \? regex metachar working?, Clark O. Morgan, 2001/08/23
- Re: is expr's \? regex metachar working?, Andreas Schwab, 2001/08/23
- Re: is expr's \? regex metachar working?, Clark Morgan, 2001/08/23
- Re: is expr's \? regex metachar working?, Andreas Schwab, 2001/08/23
- Re: is expr's \? regex metachar working?, Clark Morgan, 2001/08/23
- Re: is expr's \? regex metachar working?, Andreas Schwab, 2001/08/23
- Re: is expr's \? regex metachar working?, Clark Morgan, 2001/08/23
- Re: is expr's \? regex metachar working?, Andreas Schwab, 2001/08/23
- Re: is expr's \? regex metachar working?, Clark Morgan, 2001/08/23
- Re: is expr's \? regex metachar working?, Paul Jarc, 2001/08/23
Re: is expr's \? regex metachar working?,
Clark O. Morgan <=