Steve Borho committed a84018a

doc: add some content to whatsnew.txt

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 .. module:: whatsnew.dialog
 	:synopsis: New features in this release
+TortoiseHg 2.0
+The following philosophical changes were made between TortoiseHg 1.0 and
+TortoieHg 2.0
-Use of Mercurial command lines
+We wanted a single 'TortoiseHg' application which can access nearly all
+TortoiseHg (and Mercurial) functionality and that could be launched by a
+desktop or start menu shortcut.  So we developed the Workbench
-Resolve tool, incremental merge, rebase, etc
+The Workbench can support multiple repositories open at a time via "Repo
+Tabs" across the top of the main window.
-Shelve Dropped, MQ Improved
+Each repository tab supports multiple "Task Tabs" beneath its graph
+splitter.  These task tabs are switchable via icons on the right side of
+the Workbench or via application menus.  Available task tabs include a
+changeset browser, a commit tool, a manifest browser, a history search
+widget, and a sync widget.
+Also available are two dockable widgets - a *Repository Registry* which
+lists all known repositories on your local machine and an *Output Log
+Window* which displays running command lines and their output and can
+also function as a minimal shell.
+Showing Mercurial command lines
+In an effort to educate users on Mercurial's command interface, nearly
+all commands are executed in the log window, displaying the full command
+line and Mercurial's output (progress indication is provided by progress
+bars inside the Workbench status bar).  The few tools that do not use a
+command log window will generally display the command line they execute.
+Resolve tool, deliberate merges
+TortoiseHg 2.0 introduces a resolve dialog for resolving conflicted
+file merges.  It shows the users all the files that require resolution
+and those files that have been resolved, allowing merges to be verified.
+As supported by Mercurial's resolve command, individual file merges may
+be restarted as many times as necessary to get the merge correctly
+By default, TortoiseHg will use the resolve dialog to resolve all
+conflicts, including trivial conflicts.  It instructs Mercurial to never
+merge files automatically, deferring their resolution until the resolve
+dialog can be launched.  This is true for merges, update commands that
+require content merges, rebases, and backouts.
+Shelve dropped, MQ improved
+TortoiseHg 2.0 does not include a shelve tool as 1.0 did.  Instead, we
+have elevated MQ usability to cover the use cases where shelving was
+necessary (still a work in progress).  This approach avoids a number of
+shelve issues, for instance its inability to shelve added or removed
+Revision Sets
+We have replaced the filter bar of the Repository Explorer with a
+revision set bar in the Workbench.  Revision sets were introduced in
+Mercurial 1.6 and have been integrated with an increasing number of
+commands in each subsequent release.  They are a powerful query language
+for finding and specifying revisions in your repository.
+The Workbench also includes a revision set editor which both teaches the
+user the available keywords and their arguments, and offers brace
+matching, auto-completions, and other editing ameneties.
+In TortoiseHg 2.0, incoming and outgoing changesets are visualized as
+revisions sets.  In previous versions they were represented by graph
+Qt and PyQt
+TortoiseHg 2.0 has been a near rewrite of all of the tools and dialogs
+taking advantage of Nokia's excellent `Qt <>`_
+UI framework and Riverbank Computing's fine
+`PyQt <>`_ Python
 Polling of repository state and config
+The Workbench and other applications like the commit tool will poll
+repositories on your local machine to detect changes made to either the
+repository or their configuration files, and automatically update
+running applications as necessary.  Nearly all configuration changes are
+effective immediately, with the notable exception of enabling or
+disabling Mercurial extensions.  Changes to extension configuration
+generally require application restarts before they take effect.
 Immediate bug report dialogs
+Prior to TortoiseHg 2.0, bug reports were written to stderr as they
+occured and stderr was captured and scanned at exit to report those
+errors to the user.  While we gained many valuable bug reports via this
+mechanism, there was rarely any context on what operations caused these
+In TortoiseHg 2.0, we have created a PyQt native generic exception
+handler that catches all Python exceptions that are otherwise unhandled
+by application code.  This allows us to display exception tracebacks
+almost immediately after they occur (after a short timeout to collect
+consecutive exceptions together).  The hope is that future bug reports
+will contain better reproduction instructions, or at least context for
+the tracebacks.
+Demand loaded graph
+To keep refreshes as effecient as possible, the graphing algorithm will
+only load a couple hundred revisions initially during a refresh, and
+then load further revisions only when those revisions are required to be
+displayed.  You will notice scrolling through the graph is jerky, these
+are bulk loads of revisions into the graph.  To avoid this jerkiness you
+can force TortoiseHg to load all revisions in the graph via the 'Load
+All' toolbar button or jump directly to the earliest revision you wish
+to view (SHIFT-CTRL-G).
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