githelp: improve help for `git add`
The old code was referencing record and crecord, which are
deprecated. `hg commit --interactive` is the preferred mechanism
to use.
In addition, there was duplicate code in this function. It has
been removed.
Tests have been added to cover this function.
Differential Revision: https://phab.mercurial-scm.org/D1723
githelp: vendor Facebook authored extension
This commit vendors the Facebook-authored "githelp" extension. This
extension provides a "githelp" command that can be used to try to
convert a `git` command to its Mercurial equivalent. This functionality
is useful for Git users learning Mercurial.
The extension was copied from the
repository at revision
32ceeccb832c433b36e9af8196814b8e5a526775. The
following modifications were made:
* The "testedwith" value has been changed to match core's conventions.
* Support for a custom footer has been removed, as it is Facebook
specific. The feature is useful. But the implementation wasn't
appropriate for core.
* A test referencing "tweakdefaults" has been removed.
* Imports changed to match Mercurial's style convention.
* Double newlines in test removed.
* Pager activation changed to ui.pager().
* Initial line of githelp.py changed to add description of file.
The removal of the custom footer code was the only significant
source change. The rest were mostly cosmetic.
There are still some Facebook-isms in the extension. I'll address
these as follow-ups.
.. feature:: githelp extension
The "githelp" extension provides the ``hg githelp`` command. This
command attempts to convert a ``git`` command to its Mercurial
equivalent. The extension can be useful to Git users new to
Mercurial.
Differential Revision: https://phab.mercurial-scm.org/D1722