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cmdutil: add class to restore dirstate during unexpected failure...
cmdutil: add class to restore dirstate during unexpected failure Before this patch, after "dirstate.write()" execution, there was no way to restore dirstate to the original status before "dirstate.write()". In some code paths, "dirstate.invalidate()" is used as a kind of "restore .hg/dirstate to the original status", but it just avoids writing changes in memory out, and doesn't actually restore the ".hg/dirstate" file. To fix the issue that the recent (in memory) dirstate isn't visible to external processes (e.g. "precommit" hooks), "dirstate.write()" should be invoked before invocation of external processes. But at the same time, ".hg/dirstate" should be restored to its content before "dirstate.write()" during an unexpected failure in some cases. This patch adds the class "dirstateguard" to easily restore ".hg/dirstate" during unexpected failures. Typical usecase of it is: # (1) build dirstate up .... # (2) write dirstate out, and backup ".hg/dirstate" dsguard = dirstateguard(repo, 'scopename') try: # (3) execute somethig to do: # this may imply making some additional changes on dirstate .... # (4) unlink backed-up dirstate file at the end of dsguard scope dsguard.close() finally: # (5) if execution is aborted before "dsguard.close()", # ".hg/dirstate" is restored from the backup dsguard.release() For this kind of issue, an "extending transaction" approach (in https://titanpad.com/mercurial32-sprint) seems to not be suitable, because: - transaction nesting occurs in some cases (e.g. "shelve => rebase"), and - "dirstate" may be already modified since the beginning of OUTER transaction scope, then - dirstate should be backed up into the file other than "dirstate.journal" at the beginning of INNER transaction scope, but - such alternative backup files are useless for transaction itself, and increases complication of its implementation "transaction" and "dirstateguard" differ from each other also in "what it should do for .hg/dirstate" in cases other than success. ============== ======= ======== ============= type success fail "hg rollback" ============== ======= ======== ============= transaction keep keep restore dirstateguard keep restore (not implied) ============== ======= ======== ============= Some collaboration between transaction and dirstate will probably be introduced in the future. But this layer is needed in all cases.
Steve Borho - - Load All Authors

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contrib.wxs
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Adrian Buehlmann
contrib/wix: switch *.wxs files to LF eol
 r10513 <?xml version="1.0" encoding="utf-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828
<?include guids.wxi ?>
Steve Borho
wix: add support for x64 native MSI packages
 r13042 <?include defines.wxi ?>
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828
<Fragment>
<ComponentGroup Id="contribFolder">
<ComponentRef Id="contrib" />
<ComponentRef Id="contrib.vim" />
</ComponentGroup>
</Fragment>
<Fragment>
<DirectoryRef Id="INSTALLDIR">
<Directory Id="contribdir" Name="contrib" FileSource="$(var.SourceDir)">
Steve Borho
wix: add support for x64 native MSI packages
 r13042 <Component Id="contrib" Guid="$(var.contrib.guid)" Win64='$(var.IsX64)'>
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828 <File Name="bash_completion" KeyPath="yes" />
<File Name="hgk" />
Steve Borho
wix: hgweb file renames
 r11006 <File Name="hgweb.fcgi" />
<File Name="hgweb.wsgi" />
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828 <File Name="logo-droplets.svg" />
<File Name="mercurial.el" />
<File Name="tcsh_completion" />
<File Name="tcsh_completion_build.sh" />
<File Name="xml.rnc" />
<File Name="zsh_completion" />
</Component>
<Directory Id="vimdir" Name="vim">
Steve Borho
wix: add support for x64 native MSI packages
 r13042 <Component Id="contrib.vim" Guid="$(var.contrib.vim.guid)" Win64='$(var.IsX64)'>
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828 <File Name="hg-menu.vim" KeyPath="yes" />
<File Name="HGAnnotate.vim" />
<File Name="hgcommand.vim" />
<File Name="patchreview.txt" />
<File Name="patchreview.vim" />
Steve Borho
wix: add vim syntax file for Mercurial unit tests
 r12792 <File Name="hgtest.vim" />
Adrian Buehlmann
wix: refactor and new guids.wxi
 r10828 </Component>
</Directory>
</Directory>
</DirectoryRef>
</Fragment>
Adrian Buehlmann
contrib/wix: switch *.wxs files to LF eol
 r10513 </Wix>