[PATCH] commands: possibly start a web browser during `hg serve` (BC)

[Yuya Nishihara]

On Sat, 16 Jul 2016 14:04:46 +0800, Anton Shestakov wrote:
> 16.07.2016, 12:58, "Gregory Szorc" <gregory.szorc at gmail.com>:
> I've been running 3 different browsers with different arguments and extensions on 3 different workspaces (Xfce) for a long time and found that to be great. Now, if Xfce could pick up my custom menu items or shortcuts (it can't) and make one of them the default browser, maaybe I could pick just one for every possible case of me running `hg serve` [1]. I assume it would still open the browser on the workspace where the terminal with `hg serve` is, and not on the workspace I want to keep that browser on. All of that would be fairly annoying. Thank you for reading my rant.
> 
> So I think that opening a browser on `hg serve` without arguments should be opt-in (require e.g. web.browser=default, or an argument to the command). How about alias.ui = serve --browser?

Agree. I don't wanna open GUI unintentionally while working in console. So,

 -1 for default
 0 for opt-in feature

> I also think that for hgweb to become more discoverable, we could just fix https://bz.mercurial-scm.org/show_bug.cgi?id=3976 and then write "WebUI available at http://127.0.0.1:8000/" or something more... inviting. Luckily, many terminals actually allow double-clicking or right-clicking the link and picking "Open in browser" in the context menu.

I think it's okay to show "listening at" message even if --port is specified.