git-arc: Retain color status messages

[imp]

Summary

Newer versions of archanist have an --ansi option to always include the
ansi colors when doing an arc list (or any command really). Add this to
the arc list that's relevant. Add filter to filter out the 'bolding'
though since that interferes with our parsing. This should restore the
color output after df834e06bbc7.

Fixes: df834e06bbc7
Sponsored by: Netflix

[markj]

Don't we still need to strip all sequences when using arc_list in title2diff()?

[imp]

In D43459#990661, @markj wrote:

Don't we still need to strip all sequences when using arc_list in title2diff()?

It works for me if I don't., but now I'm thinking that it may make sense to add a --no-ansi since john's and my experience with the same rev is so different.

[imp]

Be explicit when we do or don't need to filter

[imp]

It worked without the --no-ansi, let's see if this makes @jhb happy too.

[imp]

fix alignment issue with git arc list for revisions with no review

[imp]

In D43459#990757, @imp wrote:

fix alignment issue with git arc list for revisions with no review

well, fix until review D100000 ...

[jhb]

s/archanist/arcanist/ in the commit log