> i check this regex with grep, it work fine but in postfix no. > > grep -E "^Reference No: PP-[0-9][0-9][0-9]+(-[0-9]+)*.$" test.txt > > Reference No: PP-425-168-292 > > warning: header Subject: Reference No: PP-425-168-292 > > /^Subject: ^Reference No: PP-[0-9][0-9][0-9]+(-[0-9]+)*.$/ DISCARD > > any ideas?
- In the last example you have a caret at the beginning of both Subject and
Reference.
- There is a period a the end between the asterisk and dollar sign. That means
there has to be exactly one character after the last number. Is this a
requirement?
You could simplify it as "Reference No: PP(-[0-9]+)+” unless it is mandatory
that the first group of digits is exactly three characters. If they all are you
could use {3,3} instead of the first plus. You could also use {1,3} if they are
variable length. You can do the same to the second plus as it is the count of
groups including the dash.
(I didn’t test any of these. It’s been a while since I last wrote regexps so I
might be rusty.)
--
Cheers
Petri
https://metis.fi/en/petri
tel:+358400505939
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