lekirst

Is it possible to substitute multiple numbers?

So if the combination of 5 6 is found substitute for 5?

Is it possible to substitute multiple numbers?
So if the combination of 5 6 is found substitute for 5?


substitute-multiple-numbers

I am using the regexp to substitute numbers. However I am now facing some troubles with number with multiple digits.

I am using the regexp to substitute numbers. However I am now facing some troubles with number with multiple digits.
How do I address the numbers above 9???


Try this. You don't want to use character classes, instead use OR (|) matching.

I'd prefer some kind of Max-native solution here, since using regular expressions like this seems messy, but I can't think of a better way.

the patch you wrote only seems to work with an input message of 3 (or 6 numbers)

how can I alter it, that also the messages with two number work?

the patch you wrote only seems to work with an input message of 3 (or 6 numbers)
how can I alter it, that also the messages with two number work?


That doesn't really look right to me. In fact, your pattern will substitute more than 3 numbers: 5 7 8 11 12 becomes 3.

regexp (5|6|7|8|11)\s(6|7|8|11)((\s(6|7|8|11|12))?) @substitute 3

 which uses the ? operator to make the 3rd group optional. But then it won't match "11 12", for instance, since it requires a 5, 6, 7, 8,or 11 at the front of the potential list followed by a 6, 7, 8 or 11. So that regexp will match a minimum of 2 and a maximum of 3 numbers in a row.

Regular expressions can do nearly anything related to text processing, in fact, but like any other programming, you have to be really specific about the outcome you desire.

You could try this: regexp (5|6|7|8|11)\s(6|7|8|11)((\s(6|7|8|11|12))?) @substitute 3 which uses the ? operator to make the 3rd group optional. But then it won't match "11 12", for instance, since it requires a 5, 6, 7, 8,or 11 at the front of the potential list followed by a 6, 7, 8 or 11. So that regexp will match a minimum of 2 and a maximum of 3 numbers in a row.

Regular expressions can do nearly anything related to text processing, in fact, but like any other programming, you have to be really specific about the outcome you desire. 