Feature request: copy milestone and/or labels from original PR

[kikito]

Hi @tibdex, thank you for this github action, it is very useful.

One thing that would help my team would be that when the pull request that is being backported belongs to a github milestone, or has some labels, they get carried over to the backport.

If you are not able to provide this feature for free (which is understandable) would you be open to reviewing a pull request? If that's the case, would you prefer that that's controlled by a config setting, or would you be ok with this being always enabled?

[tibdex]

Hi, the label part can already be done with:

backport/action.yml

Lines 32 to 39 in b1bb2aa

	labels_template:
	description: >
	Lodash template compiling to a JSON array of labels to add to the backport PR.
	The data properties are:
	- base: backport PR's base branch
	- labels: array containing the original PR's labels, excluding those matching `label_pattern`.
	default: "[]"

right?

would a similar input for milestones work for you too?

[tvdeyen]

@tibdex This is a nice feature for this great action.

But how do we use this labels_template?

Is this correct?

labels_template: "<%= labels %>"

or how is it interpolated?

Some more documentation would be nice.

[tvdeyen]

@tibdex I tried

labels_template: "<%= labels %>"

and

labels_template: "[<%= labels %>]"

both give errors you can see here

1. https://github.com/AlchemyCMS/alchemy_cms/actions/runs/5866754753/job/15906167771#step:2:19
2. https://github.com/AlchemyCMS/alchemy_cms/actions/runs/5866816076/job/15906360766#step:2:19

I am not sure how to convert the labels via a lodash template string into a JSON Array. Any hints would be appreciated.

It would be great if you could provide some documentation, so that I do not need to create fake commits into my repo that I need to clean up later. Thanks 🙏🏻

[tvdeyen]

Never mind. Switched to https://github.com/sqren/backport