How to filter for named branches with a partial name match in mercurial?

Question

I use the following search expression to find all the heads which aren't closed in our mercurial repository:

head() and not closed() and not branch('default') 

However, I have a convention to name feature branches as fb-(target-release)-(feature-name) and I'd also like to filter for the named branches which contain fb at the beginning of their name. Is this possible without piping the output to another application?

Answer 1

You can use regular expressions in the branch expression. From hg help revset:

  "branch(string or set)"
  All changesets belonging to the given branch or the branches of the
  given changesets.

  If "string" starts with "re:", the remainder of the name is treated as a
  regular expression. To match a branch that actually starts with "re:",
  use the prefix "literal:".

So to match fb- at the beginning of the name:

head() and not closed() and not branch('default') and branch('re:^fb-')