problem with extdiff extension

[Mads Kiilerich]

On 08/22/2011 06:25 PM, James Walker wrote:
> The extdiff extension is not working for me lately, depending on which
> arguments I pass. I'm using hg version 1.9.1 on Mac OS X 10.6.8. My
> .hgrc enables extdiff and then configures it as follows:
>
> [extdiff]
> cmd.bbdiff=/usr/bin/bbdiff
> opts.bbdiff=--wait --resume --reverse
>
> Here bbdiff is a command that invokes the BBEdit text editor.
>
> If I say
>
> hg bbdiff Source/StatusController.mm
>
> then it works correctly. If I say
>
> hg bbdiff -r 53 Source/StatusController.mm
>
> then I get
>
> bbdiff: error: -36
>
> where -36 is a Mac OS code that means I/O error. And if I say
>
> hg bbdiff -r 53 -r 56 Source/StatusController.mm
>
> then there is no response at all.
>
> I suppose there could be a bug in bbdiff or BBEdit, which have been
> updated about as recently as Mercurial, but I'm not sure how bbdiff
> could tell the difference between these 3 cases. In each case, it should
> just be receiving 2 files.
>
> Any suggestions on how to proceed?

Try to add
   --debug --traceback
when you run hg and see if that gives a hint.

/Mads