missing lookbehind

[Senjuu]

I wanted to use the integration to my issue tracker that tortoise offers.
But as I entered the Regular expression for the bugnumber I found out
that the lookbehind operators ("(?<=)", "(?<!)") were not supported.

So I would think it would be worth to implement this.
The reason I need this is that an example commit message could look like

/*Begin of Message*/
+CHANGED: The password could only hold forty(40) characters (#%BUGID%)

See also revision r42
/*End of Message*/

So my "Message part expression" was "\+(CHANGED|NEW):.+\(#\d+\)"
and my "Bug-ID expression" was "(?<=\(#)\d+(?=\))"
so that only the part I set %BUGID% in the example message would be matched by the "Bug-ID expression". But the dialog said "The regular expression is invalid!".

[Stefan]

C++11 uses ECMAScript's regular expression syntax, lookbehind is not supported.

why not just use

\(#(\d+)\)

to extract the bug id?

[Senjuu]

Because the Link would than be like
https://domain/showBug?id=(#42)
instead of

https://domain/showBug?id=42

[Stefan]

No, it wouldn't.

The group is used to extract the id. So it wouldn't catch the '#'.

Stefan

 

[Senjuu]

It would.

From "+CHANGED: The password could only hold forty(40) characters (#10)"

the regex "\(#\d+\)

would match "(#10)"

[Stefan]

Ok, I see your problem.

But why are you capturing the whole string? You could just try this:

\(#(\d+)\)    to catch the message part expression

(\d+)   to then catch the number