add --output to hg diff

[Thomas Arendsen Hein]

* Evan Powers <evan.powers+hg at gmail.com> [20080303 19:16]:
> On Mon, Feb 18, 2008 at 9:05 AM, TK Soh <teekaysoh at gmail.com> wrote:
> > I wonder if it'd make sense to have a --output for hg diff too. This
> >  should allow user to bypass the OS messing with the line terminations.
> >  On a personal agenda, I'd like to be able to save the diff output
> >  directly to a file from within TortoiseHg dialogs.
> 
> I've wanted that exact feature several times.
> 
> I sometimes want to save some piece of my work prior to a revert. I
> could use MQ, but that's pretty heavy handed. On Linux I'd just "hg
> diff >changes.patch", but of course if I do that on Windows it garbles
> the line endings and I end up with a patch that won't apply. A command
> line option to write straight into a file, however....

Maybe this should rather be a global option, e.g. "--stdout foo"
(with a corresponding "--stderr bar"?) which just tells the ui
class to send the output to a file.

Thomas

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