Looking for a regex to match more than one reference string in TortoiseSVN

We used two different methods to reference external documents and Bugzilla bug numbers.

I'm now looking for a regular expression that matches these two possibilities of reference strings for convenient display and linking in the TortoiseSVN 1.6.16 log screen. First should be a bugzilla entry of the form [BZ#123], second is [some text and numbers], which has not to be converted into a url.

This can be matched with

\[BZ#\d+\]

and

\[.*?\]

My problem now is to concatenate those two match strings together. Usually this would be done by the regex (first|second), and I've done it this way:

(\[.*?\]|\[BZ#\d+\])

Unfortunately in this case TortoiseSVN seems to catch it all as the bug number because of the round braces. Even if I add a second expression which (according to the documentation) is meant to be used to extract the issue number itself, this second expression is supposed to be ignored:

(\[.*?\]|\[BZ#\d+\])
\[BZ#(\d+)\]

In this case TortoiseSVN displays the bug and document references correctly in the separate column, but uses them completely for the bugtracker url, which is of course not working:

https://mybugzillaserver/show_bug.cgi?id=[BZ#949]

BTW, Mercuri开发者_C百科al uses a better way by using {1}, {2}, ... as the placeholder in URLs.

Has anybody an idea how to solve this problem?

EDIT

In short: We have used [BZ#123] as bug number references and [anytext] as references to other (partly non-electronic) documents. We would like to have both patterns listed in TortoiseSVN's extra column, but only the bug number from the first part shpuld be used as %BUGID% in the URL string.

EDIT 2

Supposedly TortoiseSVN cannot handle nested regex groups (round braces), so this question doesn't have any satisfactory answer at the moment.

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I'm not familiar with TortoiseSVN regex, but what it looked like the problem was that the first piece of the regex ([.*?\]) would always match, so you would never even get to the part evaluating the second part, \[BZ#(\d+)\]

Try this one instead:

((?<=\[BZ#)\d+(?=\])|\[.*?\])

Explanation:

(           #Opening group.
(?<=\[BZ#)  #Look behind for a bugzilla placeholder.
\d+         #Capture just the digits.
(?=\])      #Look ahead for the closing bracket (probably not necessary.)
|           #Or, if that fails,
\[.*?\]     #Find all other placeholders.
)           #Closing the group.

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Edit: I've just looked at TortoiseSVN docs. You could also try to keep the Message part expression the same, but change the Bug-ID expression to:

(?<=\[BZ#)(\d+)(?=\])

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Edit: ?<= represents a zero-width lookbehind. See http://www.regular-expressions.info/lookaround.html. It is possible that TortoiseSVN doesn't support lookbehinds.

What happens if you just use (\d+) for your Bug-ID expression?