[Bug 4907] New: log ignores revset alieases when called through python-hglib

[mercurial-bugs at selenic.com]

https://bz.mercurial-scm.org/show_bug.cgi?id=4907

            Bug ID: 4907
           Summary: log ignores revset alieases when called through
                    python-hglib
           Product: Mercurial
           Version: 3.5
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: feature
          Priority: wish
         Component: hglib
          Assignee: bugzilla at selenic.com
          Reporter: gabor.stefanik at nng.com
                CC: mercurial-devel at selenic.com

I have this in my hgrc:
[revsetalias]
branchtop($1) = heads(branch($1)) - bookmark()

This works fine when called from command line:
C:\repo>hg log -r branchtop("default")
changeset:   28208:<censored>
parent:      28193:<censored>
parent:      28202:<censored>
user:        dhorvath
date:        Fri Oct 16 13:58:16 2015 +0200
summary:     Merge with <censored>

It also works from TortoiseHg's filter bar.

However, it fails when called through python-hglib:
C:\repo>python
>>> import hglib
>>> c = hglib.open('.')
>>> c.log('branchtop("default")')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\Lib\site-packages\hglib\client.py", line 993, in log
    out = self.rawcommand(args)
  File "C:\Python27\Lib\site-packages\hglib\client.py", line 183, in rawcommand
    raise error.CommandError(args, ret, out, err)
hglib.error.CommandError: (255, '', 'hg: parse error: unknown identifier:
branchtop\n(did you mean one of branch, branchpoint?)')

If I make a small Hg extension to implement branchtop() instead of using an
alias, it works also through python-hglib.

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